Oral Anatomy MCQs

Oral Anatomy MCQs

MCQs of Oral Anatomy are available here if you are interested to join Pak Army as a Medical Officer and want to become direct Captain or Major. Oral Anatomy MCQs have been collected from the past papers which were taken from the different Army Selection & recruitment Centers regarding medical tests.

Those who are expert and have vast knowledge about Tumer, Nodes and Metastasized with their MBBS degrees recognized by PM&DC, they need no worry about job in Pakistan Army as an M-Cadet. Such multiple choice questions are very important for passing medical initial tests of Pak Army.

Such candidate who fulfil the basic criteria to Join Pak Army through Short Service Regular Commission and want to register themselves for Captain or Major then the given past experience of past questions are very helpful for them.

Visit this page in detail for tests pattern and syllabus regarding medical tests with all pre-requisites for becoming medical officers in Pak Defence Forces. Females can also apply those who have MBBS or BDS degree from any Army Medical Colleges with pre medical FSc or equivalent.

Following tests of Oral Anatomy MCQs are given to clear academic tests which have been taken in the initial tests of Army , Navy or Pakistan Air Force Medical Officer. These questions are very useful for all M-Cadet tests.

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Oral Anatomy MCQs for Preparation of Medical Initial Tests in Short Service Commission

Conjoint tendon is formed by _________?

A. External and internal oblique
B. External oblique and transversus abdominis
C. Internal oblique and transversus abdominis
D. Internal oblique

Resorption of root of primary incisors starts at_______?

  1. 4 yrs
    B. 6 yrs
    C. 8 yrs
    D. 10 yrs

Which among the following is NOT a common finding of the deciduous dentition ?

A. Tight contacts, absence of spacing
B. Shallow overjet and overbite
C. Flush terminal plane
D. Ovoid arch form

The sharpest cusp of primary first molar tooth is______?

A. Mesiobuccal
B. Distobuccal
C. Mesiolingual
D. Distolingual

Difference between primary and permanent enamel is______?

A. In prism arrangement
B. in mineral content
C. No difference in enamel, difference in dentin
D. None of the above

Among the difference between teeth in the deciduous and the permanent dentition is that_____________?

A. Buccal surfaces of the permanent molars are flatter
B. Cervical ridges are more pronounced in permanent molars
C. Root trunks of deciduous teeth are larger compared with their overall root lengths
D. Crowns of deciduous incisors are wider mesiodistally than their cervico incisal lengths

Mesiodistal width is more than cervico- incisal length of crown in________?

A. Permanent central incisors
B. Decidous maxillary central incisors
C. Permanent maxillary canines
D. Permanent mandibular lateral incisors

The highest ( longest ) and sharpest cusp on the decidous mandibular first molar is________?

A. Mesiolingual
B. Distolingual
C. Mesiobuccal
D. Distobuccal

Transverse ridge is prominent on occlusal surface of which of the following deciduous teeth ?

A. Mandibular first molar
B. Maxillary first molar
C. Mandibular second molar
D. Maxillary second molar

Primary teeth differ from permanent teeth in following aspects ?

A. Thickness of enamel and dentin
B. Pulp chambers are longer
C. Roots are flaring
D. All of the above

Pulp chambers and roots canals in deciduous teeth_______?

A. Wide and deep
B. Shallow and narrow
C. Wide and narrow
D. Shallow and wide

When viewed occlusally, a primary mandibular second molar closely resembles which of the following mandibular teeth ?

A. Permanent second molar
B. Permanent first molar
C. Second premolar
D. Primary first molar

Roots of primary and secondary teeth are different in that the primary roots are more divergent and flaring. The other difference _____?

A. Primary roots show less a accessory and lateral canals
B. Primary roots resorb more easily
C. Primary roots are shorter
D. None of the above

How many roots does a primary maxillary first molar have ______?

A. One
B. Two
C. Three
D. Four

How many cusps does the crown of the maxillary first primary molar have ?

A. 2
B. 3
C. 4
D. 5

The largest mesiodistal diameter in primary dentition is________?

A. Mandibular 1st molar
B. Mandibular2nd molar
C. Maxillary 2nd molar
D. None of the above

During the development of a tooth, sound coalescence of the lobes results in______?

A. Grooves
B. Fissures
C. Cusps
D. All of the above

The crowns and roots of primary molar at their cervical portions are more______?

A. Slender mesiodistally
B. Slender anteroposteriorly
C. Bulkier mesiodistally
D. Buliker anteroposteriorly

The pulp of first primary molar contains_________?

A. Four pulp horn and three root canal
B. Three pulp horn and three root canal
C. Two pulp horn and two root canal
D. Two pulp horn and three root canal

What is the thickness of the layer of primsless enamel found in primary teeth_______?

A. 25 μm
B. 50μm
C. 75μm
D. 100μm

The direction of enamel rods in decidous teeth is______?

A. Same as permanent teeth
B. Inclined in an apical direction in the cervical third of crown
C. Inclined in an occlusal direction in the cervical third of crown
D. None of the above

With respect to their permanent successors the sum of the mesidodistal diameters of the first and second deciduous molar is generally ______?

A. Less
B. Greater
C. The same
D. Not related

Cusp of carbaelli can be considered a normal finding on_______?

A. Decidous mandibular 1st molar
B. Decidous maxillary 1st molar
C. Decidous maxillary 2nd molar
D. Decidous mandibular 2nd molar

How many pulpal horns are there in the mandibular second primary molar ?

A. 3
B. 6
C. 4
D. 5

Which statement is correct about deciduous dentition?

A. Calcification of maxillary primary first premolar is completed at birth
B. Mandibular first molar erupts at one and half years of age
C. The crowns of primary dentition are more yellowish than permanent
D. The primary dentition is initiated at 10thmonth in uterus

Cervical bulge. True is_______?

A. Enamel rods at cervical region directed occlusally
B. Results in constriction at cervical region
C. Is characteristic of decidous teeth
D. All of the above

In the majority of situations, that first deciduous tooth to erupt is the______?

A. Mandibular central incisor
B. Mandibular first molar
C. Maxillary central incisor
D. Maxillary second molar

The primary lateral incisors begin to calcify about the______?

A. 4th month of life
B. 4th month in utero
C. 41/2 month in utero
D. 5th month in utero

The primary teeth that present the most outstanding morpholgic deviations from permanent teeth are________?

A. Central incisors
B. Mandibular first molar
C. Mandibular second molar
D. Canines

Which of the following has the maximum faciolingual diameter of the crown_____?

A. Deciduous maxillary 2nd molar
B. Deciduous maxillary 1st molar
C. Deciduous mandibular 2nd molar
D. Deciduous mandibular 1st molar

Primary dentition period is_______?

A. From birth to 11 years
B. From 6 months to 11 years
C. From 6 months to 6 years
D. From 6 years to 11 years

Which of the following deciduous molars bears the greatest resemblance to a premolar ____?

A. Maxillary first
B. Maxillary second
C. Mandibular first
D. Mandibular second

The correct dentition in a 9- years old child is____?

A. 12 CDE6
B. 12C456
C. 123DE6
D. 123456

Once the enamel formation is complete, the tooth will erupt after approximately_______?

A. One year
B. Two years
C. Three years
D. Four years

Calcification of all teeth except last molars are completed by______?

A. 2 years
B. 4 years
C. 6 years
D. 8 years

The time taken for primary tooth root completion after eruption_______?

A. 3 years
B. 1 years
C. 2 years
D. 1 month

Calcification of third molar begins at________?

A. 8 months
B. 18 months
C. 8 years
D. 16 years

Kalu, a 6- years – old child, received tetracycline. Noticeable discoloration will be seen in______?

A. Premolars, incisors and 1st molars
B. Canine and 2nd molars
C. Canines, premolars and2ndmolars
D. Incisors and 1st molars

What is the amount of time required by erupting premolar to move through 1 mm of bone as measured on a bite – wing radigraph ?

A. 3-4 months
B. 4-5 months
C. 5-6 months
D. 6-7 months

Eruption date of deciduous maxillary 2nd molar is ______?

A. 20 months
B. 18 months
C. 24 months
D. 28 months

Number of teeth seen on X- ray at birth______?

A. 20
B. 22
C. 24
D. 30

Which of the following is dental formula of a 9 years old child_______?

A. 6 EDC21/ 6EDC21
B. 6EDCBA/ 6EDC21
C. EDC21/EDC21
D. 76EDC21/ 7EDC21

First evidence of initiation of primary dentition is usually around_____?

A. 4 months in utere
B. Birth
C. 4 months after birth
D. One year after birth

Generally in majority of children, the sequence of eruption of permanent teeth in mandible is_____?

A. 1-6-2-3-5-4-7-8
B. 6-1-2-4-5-3-7-8
C. 6-1-2-3-4-5-7-8
D. 6-1-2-4-3-5-7-8

A radiograph of 4- years old child reveals no evidence of calcification of mandibular second pre molar. This indicates______?

A. It is too early to make final predication
B. The teeth may develop later
C. Primary second molar extracted to allow mesial drifting of permanent first molar
D. The child may never develop premolars

The most common sequence of eruption of the permanent maxillary teeth in children is______?

A. 1-6-2-3-4-7-5-8
B. 2-3-1-6-7-5-4-8
C. 6-1-2-4-3-5-7-8
D. 6-1-2-3-4-5-7-8

The deciduous canine emerges________?

A. Before lateral incisor
B. Before first molar
C. After first molar
D. After second molar

Calcification of roots of deciduous teeth is completed by_____?

A. 2 years
B. 4 years
C. 6 years
D. 8 years

The eruption are of maxillary permanent lateral incisor is_______?

A. 8-9 years
B. 6-7 years
C. 10-11 years
D. 8-9 months

In anxious parent calls you that her 5- month -old child has still no teeth in his mouth then you should_______?

A. Call and do radiographic survey
B. Tell her that it is normal at this age
C. Child has retarded growth
D. Systemic problem

First permanent molars begin to calcify at ______?

A. 6 months of intra utrerine life
B. At birth
C. Before decidous incisors
D. About 1 year after birth

Maxillary primary cuspid enamel completion takes place at_____?

A. 6 months in utero
B. 6 months after birth
C. 9 months in utero
D. 9 months after birth

The tooth bud for the third molar is initiated at about the age of______?

A. 6th month I.U
B. 1st year of life
C. 2nd year of life
D. 8th year of life

The first macroscopic indication of morphologic development of primary incisors approximately at_____?

A. 11 weeks in utero
B. 14 weeks in utero
C. 16 weeks in utero
D. 6 weeks in utero

A new tooth is erupting in the mouth of a one and a half year old child. This tooth is most likely to be a deciduous_____?

A. Maxillary central incisor
B. Mandibular lateral incisor
C. Maxillary lateral incisor
D. Maxillary canine

The first evidence of calcification of primary anterior teeth begins approximately between ______?

A. 14 to 17 weeks in utero
B. 9 to 12 weeks in utero
C. 6- to 9 weeks in utero
D. 17 to 20 weeks in utero

Which of the following is true about calcification of teeth ?

A. Calcification of primary teeth is almost complete at time of birth
B. Calcification of all primary teeth and few permanent teeth complete at birth
C. Calcification of all permanent teeth complete at birth
D. Calcification of primary teeth starts around birth

The process of exfolitation of primary teeth is between______?

A. Seventh and eight years
B. Seventh and ninth years
C. Seventh and tenth years
D. Seventh and Twelfth years

The teeth that are retained for the longest period of time are________?

A. Maxillary incisors
B. Maxillary canines
C. Mandibular incisors
D. Mandibular canines
E. B & D

In how many years, the central incisors erupt as permanent teeth ______?

A. 8-9 years
B. 10-12 years
C. 6-7 years
D. 17-25 years

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Past Questions of Joining Pak Army as Medical Cadet

Beginning of eruption of permanent tooth starts_____?

A. After completion of root
B. When apical third root is still to be formed
C. When half of the root is still to be formed
D. when root formation starts

Root completion of the mandibular first molar takes place by the age_______?

A. 7-8 years
B. 8-9 years
C. 9-10 years
D. 10 – 11 years

First evidence of calcification of maxillary permanent central incisors occurs at______?

A. 3-4 months
B. 10-12 months
C. 2-3 years
D. 3-4 years

Primary canine erupts_____?

A. After D
B. Before B
C. After B
D. After E

In the majority of situations, the first deciduous tooth to erupt is the______?

A. Mandibular central incisor
B. Mandibular first molar
C. Maxillary central incisor
D. Maxillary second molar

Which of these teeth are highly sturdy and usually the last ones to be lost ?

A. First molar
B. Central incisors
C. Canines
D. Premolars

Before eruption the position of permanent mandibular incisor buds relative to primary incisors is_____?

A. Superior and facial
B. Inferior and facial
C. Superior and lingual
D. Inferior and lingual

The root completion of permanent teeth is achieved after ____ years o eruption?

A. 1-1½
B. 2-3
C. 3-4
D. 4-5

Growth of all permanent teeth except last molars is completed by____?

A. 6 years
B. 8 years
C. 12 years
D. 17 years

Which of the following gives the best description of erupted permanent teeth typically seen in a 9- years old______?

A. Only molars
B. All teeth except third molars
C. 1,2,4,5,6,7 in all quadrants
D. 1,2,6 in all quadrants

A six- year molar begins to calcify at______?

A. Six months IU
B. At birth
C. 1 years after birth
D. 3 years age

As compared to permanent tooth , root formation in primary tooth_____?

A. Take less time
B. Take more time
C. Same time
D. Is complete when tooth erupts in oral cavity

At birth the following teeth are calcifying_____?

A. Primary incisors & first molar
B. Primary canines & second molars
C. Permanent canines
D. Permanent 3rd molar

A child has 12 permanent and 12 deciduous teeth, what is his age______?

A. 8½ years
B. 11½ years
C. 4½ years
D. 13½ years

Dentition of humans is____?

A. Herbivorous
B. Omnivorous
C. Carnivorous
D. None of the above

While charting the dentition of a child, the pedodontist finds that the following teeth are present in all the four quadrants; permanent central incisor , permanent lateral incisor , deciduous cuspid , deciduous first molar, deciduous 2nd molar and permanent 1st molar. The eruptive pattern may be considered most nearly normal for a child aged____?

A. 3-6 years
B. 7-10 years
C. 11-14 years
D. 15- 18 years

The first permanent tooth to erupt in the oral cavity is the_____?

A. Mandibular central incisor
B. Mandibular first molar
C. Maxillary central incisor
D. Maxillary first molar

The usual order of appearance of the primary teeth in the mouth is_____?

A. Central incisors, first molars, lateral incisors, second molars, canines
B. Central incisors, lateral incisors, canines, second molars, first molars
C. Central incisors, lateral incisors, first molars canines, second molars
D. Central incisors, lateral incisors, first molars second molars, canines

Calcification of permanent first molar usually begins in the______?

A. Third month of intrauterine life
B. In the sixth month of intrauterine life
C. At birth
D. In the third month of extra uterine life

The last primary tooth to be replaced by a permanent tooth is usually the________?

A. Maxillary second molar
B. Mandibular second molar
C. Maxillary canine
D. Mandibular canine

Desmodont is another name for_______?

A. The tooth with one wall pocket
B. Tooth with three walled pocket
C. periodontal ligament
D. Dehiscence

Maxillary facial and mandibular lingual cusps require sufficient occclusal length and horizontal overlap for_______?

A. Esthetics
B. Centric stability
C. Chewing efficiency
D. Soft tissue protection

Distobuccal cusp of 27 falls into ______?

A. Embrasure of 37 & 38
B. Embrasure of 36 & 37
C. Mesial pit of 37
D. Immediately incisal to cingulam

If a permanent first molar is lost, the permanent second molar drifts to the______?

A. Buccal side
B. Distal side
C. Mesial side
D. Lingual side

In an ideal occlustion buccal cusps of maxillary teeth, occlude with_____?

A. Fossa and rdges
B. Grooves and embrasures
C. Lingual cusps of mandibular teeth
D. Occlusal pits and fissures of mandibular teeth

Normal dentition in centric occlusion, opposing contact may be expected at_______?

A. Buccals slopes of buccal cusps of maxillary posterior teeth
B. Buccal slopes of lingual cusps of maxillary posterior teeth
C. Lingual slopes of lingual cusps of mandibular posterior teeth
D. All slopes of lingual cusps of mandibular posterior teeth

Over jet is defined as_______?

A. Horizontal overlap
B. Vertical overlap
C. Transverse plane discrepancy
D. All the above

Group function occlusion is common in______?

A. 10 – 14 years
B. 15 -25 years
C. Above 30 years
D. Edentulous patients

IN occlusion, the teeth have______?

A. Cusp – to – cusp contact
B. Edge- to – edge contact
C. Marginal contact
D. Surface – to- surface contact

Facial occlusal line in the maxillary arch is formed by_______?

A. Stamp cusps
B. Centric holding cusps
C. Supporting cusps
D. Non- supporting cusps

Curve passing through the buccal and lingual cusp tips of the mandibular buccal teeth is_____?

A. Wilson curve
B. Mansoon curve
C. Curve of spee
D. Caternary curve

In occlusion the teeth have______?

A. Cusp to cusp contact
B. Edge to edge contact
C. Marginal contact
D. Surface to surface contact

Maximum contact between occlusal surfaces, of maxillary and mandibular teeth occur during______?

A. Centric occlusion
B. Rest position
C. Protrusive contacts
D. Laterotrusive contacts

The incisal edges and the incisal thirds of facial surfaces of mandibular incisors and canines generally oppose lingual surfaces of maxillary incisor and canines ______?

A. Within the incisor thirds
B. At the junction of middle and cervical thirds
C. At the linguo cervical ridges
D. Immediately incisal to cingulam

The key to occlusion is_______?

A. Maxillary permanent first molar
B. Maxillary permanent second molar
C. Maxillary primary first molar
D. Maxillary primary second molar

In the intercuspal position, the lingual cusp of maxillary 2nd premolar contacts the____?

A. Distal fossa of mandibular 2ndpremolar
B. Mesial fossa of mandibular 1stmolar
C. Distal marginal ridge of mandibular 2ndmolar
D. Distal marginal ridge of mandibular 1st premolar

In centric occlusion, the cusp tip of the maxillary canine is in alignment with which mandibular tooth_______?

A. Facial embrasure of canine and premolar
B. incisal embrasure of canine and premolar
C. Distal ridge of the cusp of mandibular canine
D. Mesial ridge on the facial cusp of mandibular first premolar

When a molar has no opposing tooth, it can become_______?

A. Extruded
B. Intruded
C. Protruded
D. Retruded

In normal occlusion , with which grooves / surface of the permanent mandibular first molar does the mesiobuccal cusp of the permanent maxillary first molar occlude______?

A. Distobuccal groove
B. Mesial surface
C. Mesiobuccal surface
D. Transverse groove

The maxillary teeth which have single antagonist are_____?

A. Lateral incisors
B. Permanent canines
C. Permanent central incisors
D. Third molars

The premolar alveoli are what shape in cross section_____?

A. Rectangular
B. Triangular
C. Kidney shaped
D. Oval

Retrusion of mandible is achieved by ______?

A. Lateral pterygoid
B. Temporalis
C. Masseter
D. None of the above

Which of the following moment are performed by a non- working condyle ?

A. Straightward
B. Down wards forwards and lateral
C. Down wards forwards and medial
D. Down wards Back wards and medial

Articular disc of tmj receives insertion from which muscle_______?

A. Medial pterygoid
B. Lateral pterygoid
C. Massetor
D. Temporalis

The side towards which mandible moves is called the________?

A. Tooth contact side
B. Balancing side
C. Working side
D. Non- working side

Which of the following muscle helps in depressing the mandible _____?

A. Temporalis
B. Massetor
C. Lateral pterygoid
D. Medial pterygoid

All of the following muscles are elevators of the mandible except______?

A. Digastric
B. Massetor
C. Medial pterygoid
D. Temporalis

In which of the following areas is the alveolar process the thinnest____?

A. Lingual to the maxillary central incisors
B. Buccal to the mandibular central incisors
C. Lingual to the maxillary canines
D. Lingual to the mandibular first molar

Which muscle is responsible for translation of condyle ?

A. Medial pterygoid
B. Masseter
C. Superior constrictor of pharynx
D. Lateral pterygoid

Forward moment of mandible is done by_____?

A. Lateral pterygoid
B. Medial pterygoid
C. Temporalis – anterior fibers
D. Temporalis- posterior fibers

Which of the portions of the intra articular disc is the thinnest ?

A. Anterior
B. Intermediate
C. Posterior
D. retrodiscal

Temporo – mandibular ligament is attached to _____________?

A. Lateral aspect of TMJ
B. Posterior aspect of TMJ
C. Mandibular condyle
D. Coronioid process

Which is the predominant factor in the formation of the alveolar process_______?

A. Eruption of teeth
B. Normal process of growth
C. Lengthening of the condyle
D. Overall growth of the bodies of the maxilla and the mandible

Lateral movement of condyle is caused by_____?

A. Contralateral lateral pterygoid muscle
B. Both lateral and medial pterygoid muscle
C. Epsilateral lateal pterygoid muscle
D. Bilateral contraction of lateral pterygoid muscle

Depression of mandible is achieved by______?

A. Digastric
B. Lateral pterygoid
C. Geniohyoid
D. All of the above

On opening the mouth , if the jaw deviates to the right side, it indicates the paralysis of______?

A. Right lateral pterygoid
B. Left lateral pterygoid
C. Right medial pterygoid
D. Left medial pterygoid

Which of the following is not a structural element of the temporomandibular joint ?

A. Sigmoid notch
B. Articular disc
C. Capsular ligament
D. Joint cavities

The zygomatic bone does not articulate with________?

A. Frontal bone
B. Maxillary bone
C. Nasal bone
D. Temporal bone

Articular disc of TMJ is_____?

A. Thickest posteriorly
B. Narrow in the centre
C. Strengthened by lateral pterygoid
D. All of the above

Which of the following movement (s) is / are involved in the opening of the mouth?

A. Only hinge ( rotation )
B. Only translation
C. Hinge followed by translation
D. Translation followed by hinge

Thinnest labial plate is found in the region of________?

A. Upper central incisors
B. Lower central incisors
C. Upper canines
D. Lower canines

Position and movement of articular disc of TMJ is controlled by fibers of______?

A. Lower head of lateral pterygoid muscle
B. Sphenomandibular ligament
C. Superficial head of medial pterygoid muscle
D. Upper head of lateral pterygoid muscle

Which of the following muscles moves the condyle and articular disc anterior and downwards on glenoid fossa_______?

A. Lateral pterygoid
B. Medial pterygoid
C. Temporalies- anterior fibers
D. Temporalis – posterior fibers

Basically TMJ is a_______?

A. Ball and socket joint
B. Hinge and axis joint
C. Synovial joint
D. Diartmodal joint

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Army Medical Cadet Test about Oral Anatomy MCQs

Find here the most important past papers of Oral Anatomy which help in the initial tests of Medical entrance tests of Pak Army, Pak Navy and Pak Air Force.

In maxillary 1st permanent molar, the 2 obtuse angles are______?

A. Mesiolingual and mesiofacial
B. Mesiofacial and distolingual
C. Distofacial and mesiolingual
D. Distofacial and mesiofacial

In the mandibular arch, in which tooth maximum lingual inclination is present_______?

A. 1st premolar
B. 3rd molar
C. Lateral incisors
D. Canine

Following eruption , the root of the maxillary central incisor completes development at what approximate age ?

A. 7 years
B. 8 years
C. 9 years
D. 10 years

The maxillary lateral incisor is smaller than the maxillary central incisor on all aspects EXCEPT which one of the following______?

A. Crown length
B. Mesiodistal crown width
C. Faciolingual crown width
D. Root length

Which teeth the proximal aspect shows rhomboidal appearance______?

A. Maxillary posteriors
B. Mandibular posteriors
C. Maxillary anteriors
D. Mandibular anteriors

The eruption age of maxillary permanent lateral incisor is_______?

A. 8-9 years
B. 6-7 years
C. 10-11 years
D. 8-9 months

Maxillary first molar has how many roots ?

A. 1 facial and 2 lingual
B. 1 lingual and 2 facial
C. 1 mesial and 2 buccal
D. 1 mesial and 1 distal

Average of length of maxillary cuspid is________?

A. 26 mm
B. 33 mm
C. 21 mm
D. 18 mm

Which of the following permanent teeth is usually bilaterally symmetric when viewed labially and incissaly _____?

A. Mandibular lateral incisor
B. Mandibular canine
C. Mandibular central incisor
D. Maxillary central incisor

The root trunk of permanent mandibular first molar buccally is_____?

A. Equal is length to the mesial bifurcation of the maxillary first molar
B. Equal is length to the buccal bifurcation of the maxillary first molar
C. equal in length to the crown
D. None of the above

The maxillary tooth exhibiting the greatest variation in root alignment is________?

A. Central incisor
B. First premolar
C. Third molar
D. Second molar

Which of the following is true of permanent first molar’s occlusal surface______?

A. Maxillary molar has 2 major fossa, 2 minor fossa, 4 triangular ridges,1 oblique ridge and 5 grooves
B. Mandibular molar has 1 major fossa, 2 minor fossa, 5 triangular ridges and 4 grooves
C. Rhomboidal shape in maxillary molars and hexagonal shape in Mandibular molars
D. All of the above

Which of the following is true for permanent teeth_______?

A. Maxillary roots are inclined distally where as Mandibular roots are inclined mesially
B. Maxillary molars are buccally inclined and Mandibular molars are inclined lingually
C. Buccal cusps of lower and lingual cusps of upper are the functional cusp
D. All of the above

Permanent mandibular first molar is developed from ______ lobes?

A. 3
B. 4
C. 5
D. 6

The two major fossa of permanent maxillary first molar______?

A. Central fossa and mesial fossa
B. Central and distal fossa
C. Mesial and distal tringular fossa
D. Distal fossa and distal tringaular fossa

In which of the following a nonfunctional cusp is present_______?

A. Maxillary 1st molar
B. Maxillary 2ndmolar
C. Mandibular 1st molar
D. Mandibular 2nd molar

The premolar with the occlusal groove pattern that may simulate the letter “Y” is______?

A. Maxillary first
B. Maxillary second
C. Mandibular second
D. Mandibular first

In the triangle formed by the projection of the orifices of the canals of a maxillary molar, the______?

A. Line connecting mesial with distal is longest
B. Line connecting mesial with lingual is longest
C. Line connecting distal with lingual is longest
D. Angle at the mesio facial canal is obtuse

Which bifurcation is closet to the cervical line (or) which surface has short root trunk length in a maxillary permanent first molar ?

A. Buccal
B. Mesial
C. Distal
D. None of the above

Which cusp is poorly developed in a permanent maxillary second molar______?

A. DB
B. DL
C. MB
D. ML

Tritubercular cusps are_____?

A. ML
B. MB
C. DB
D. All of the above

The occlusal surface shape of a 3 cusped mandibular second premolar_______?

A. Ova
B. Elliptical
C. Square
D. Tetrahedral

Mesial slope of buccal cusp is longer than distal slope in______?

A. Maxillary 2nd premolar
B. Maxillary 1st premolar
C. Mandibular canine
D. Maxillary canine

Mandibular second premolar 3- cusp type id developed from____?

A. 3
B. 4
C. 5
D. 6

Rounded protuberances on the incisal edges of newly erupted permanent incisors are______?

A. Mamelons
B. Tubercles
C. Enamel pits
D. Cingulum

No. of cusps in mandibular 1st molar_______?

A. 4
B. 3
C. 5
D. 6

Longest tooth of the maxillary arch is_______?

A. Permanent incisor
B. First premolar
C. Permanent canine
D. Decidous incisor

The largest permanent tooth in the mouth usually is_____?

A. Maxillary canine
B. Mandibular canine
C. Mandibular first molar
D. Maxillary first molar

Difference between mandibular and maxillary premolars is that in the mandibular premolars ?

A. The buccal and lingual cusps are more prominent
B. The lingual cusp is sharper and longer
C. The lingual surface rounded and less developed
D. The buccal surface is rounded and less developed

Mesiolingual grooves may be found on which of the following permanent teeth ______?

A. Mandibular second molars
B. Mandibular first premolars
C. Maxillary first molars
D. Maxillary canines

Which of the following features of a permanent maxillary lateral incisor aids in distinguishing it from a mandibular lateral incisor ?

A. Flattened root
B. More pronounced lingual fossa
C. Thinner incisal ridge
D. Sharper proximal incisal angles

The total number of cingula in each dentition is_____?

A. 6
B. 12
C. 24
D. 32

A maxillary right canine may be distinguished from a maxillary left canine because _______?

A. The root curves to mesial in the apical 1/3rd
B. The distal half of canine shows more convexity than the mesical half
C. Facially the cusp tip is placed distal to Bisecting line
D. Lingually the cervical line slopes mesially

Number of roots in maxillary 2nd molar is_______?

A. 2
B. 3
C. 4
D. 5

The permanent anterior tooth, which is most 20. Commonly atypical , is_____?

A. Maxillary central incisor
B. Maxillary lateral incisor
C. Mandibular central incisor
D. Mandibular 1st premolar

The root of maxillary lateral incisors if curved is usually in which direction ?

A. Distal
B. Mesial
C. Facial
D. Palatal

The shortest root on a maxillary first molar is______?

A. Mesio- buccal
B. Disto – buccal
C. Lingual
D. All are of equal length

A distinguishing characteristic of a maxillary first premolar that identifies it as right or left is the_______?

A. Height of the lingual cusp
B. Mesial inclination of the lingual cusp
C. Flattened area beneath the contact on the distal surface
D. Greater length of the mesial cusp ridge on the lingual cusp ( AIPG- 98)

The most common curvature of the palatal root of maxillary first molar is_____?

A. Facial
B. Lingual
C. Distal
D. Mesial

Which of the premolars is usually the smallest____?

A. Maxillary first
B. Maxillary second
C. Mandibular first
D. Mandibular second

Five cusps are present in_______?

A. Maxillary first molar only
B. Mandibular first molar only
C. Maxillary and mandibular first molar
D. Maxillary and Mandibular second molar

In which of the tooth is the mesiodistal measurements is greater lingually than facially_______?

A. Maxillary 1stpremolar
B. Mandibular 2ndpremolar
C. Mandibular 1st premolar
D. Maxillary 1st molar

In which of the tooth is the mesiodistal measurements is greater lingually than facially_____?

A. Maxillary 1stpremolar
B. Mandibular 2ndpremolar
C. Mandibular 1st premolar
D. Maxillary 1st molar

Greater crown bulk distal to the faciolingual bisecting plane of a tooth is most typical of the mandibular_____?

A. Central incisor
B. Lateral incisor
C. Canine
D. Second premolar (AIPG – 97, Man-95)

Which of the following is the largest root______?

A. The lingual root of a maxillary first molar
B. The lingual root of a maxillary second molar
C. The root of a mandibular canine
D. The root of a maxillary canine

The shape of the occlusal surface of the permanent maxillary first molar is______?

A. Oval
B. Trapezoidal
C. Triangular
D. Rhomboidal

The number of line angles a permanent maxillary central incisor is____?

A. Two
B. Four
C. Six
D. Eight

Dentin islands are frequently found in the root canals of which of the following permanent teeth ?

A. Maxillary lateral incisor & mandibular canine
B. Maxillary 2nd premolar & maxillary 1st molar
C. Maxillary 2nd premolar & mandibular canine
D. Maxillary 1st molar & mandibular 2nd premolar

Ratio of mesiodistal width to height of crown of maxillary canine is_______?

A. 6:10
B. 8:10
C. 6:8
D. 7:10

An 8 – yr old child comes to your clinic with large front teeth having jagged margins, what is the treatment plan for this patient ?

A. Smoothen the jagged margins and apply fluoride varnish
B. Build up other teeth to large size
C. Extraction of big teeth
D. Assure him and send him back

Crown formation of all permanent teeth except third molars is completed between______?

A. Birth to 8 years
B. Birth to 12 years
C. Birth to 6 years
D. 6 years to 12 years

According to Schour & Massler the crown completion of both permanent maxillary and mandibular first molars is_____?

A. 1½ 2 years
B. 2½ – 3 years
C. 3-4 years
D. 3-5 years

Which of the following tooth shows largest Mesio- buccal ridge ______?

A. Maxillary 1st premolar
B. Maxillary 2nd premolar
C. Mandibular 1st molar
D. Mandibular 2nd premolar

The number of point angles in a permanent mandibular first molar is_____________?

A. 6
B. 8
C. 4
D. 10

The term diphydont means____________?

A. Second dentition
B. Two same sets of dentition
C. Two separate sets of dentition
D. More than two sets of dentition

Which of the following has a nonfunctional cusp ?

A. Mandibular canine
B. Maxillary second premolar
C. Mandibular first premolar
D. None of the above

The most constant and valuable trait to differentiate among maxillary first, second and third molars i_____?

A. Number of roots
B. Depth of central fossae
C. Comparative size of the cusp of carabelli
D. Relative position of the distolingual grooves

If the pulp of a single rooted tooth canal were triangular in cross section with the base of the triangle located facially and the apex lingually with a longer mesial side than distal side; the tooth most likely is_____________?

A. Maxillary central incisor
B. Maxillary second premolar
C. Mandibular lateral incisor
D. Mandibular central incisor

The permanent mandibular second molar differs from the permanent mandibular first molar in number of ______?

A. Cusps
B. Roots
C. Lingual grooves
D. Marginal ridges

Fourth canal is present in____?

A. Mesiobuccal roots of maxillary first molar
B. Distal root of mandibular first molar
C. Both of the above
D. None of the above

The geometric outline of the buccal surface of posterior teeth are______?

A. Trapezoidal
B. Rhomboidal
C. Quadrilateral
D. Square

The lingual cusp of lower first premolar is compared to the development of______?

A. Cusp of carabelli
B. Distolingual cusp of molars
C. Lingual cusp of second premolar
D. Cingulam of canine

The maxillary molar crown of an early fossil primate featured a trigone made of three main cusps, these cusps were______?

A. Distrobuccal, distolingual and Mesiolingual
B. Distolingual, Mesiobuccal, and Linguo buccal
C. Mesiobuccal, Distobuccal and Mesiolingual
D. Mesiolingual, Mesiobuccal and distolingual

Which line angle area is most acute when a permanent maxillary second molar is viewed occlusally ?

A. Mesiofacial
B. Distofacial
C. Mesiolingual
D. Distolingual

MCQs of Oral Anatomy

In the following find the past papers questions related to the Oral Anatomy which came in the tests of medical initial tests of short service commission. 

What is the functional form of anterior teeth from the mesial or the distal aspect ?

A. Rhomboidal
B. Trapezoidal
C. Elliptical
D. Wedge- shaped

Permanent Mandibular central incisor develops from_______?

A. 1 lobe
B. 3 lobe
C. 4 lobes
D. 5 lobes

Cervical cross section of maxillary first premolar is______?

A. Dumbell
B. Kidney shape
C. Elliptical
D. Oval

Acute angled cusps in permanent maxillary first molar are______?

A. DB and ML
B. MB and DL
C. MB and DB
D. ML and DL

Tooth with most variable occlusal anatomy________?

A. Maxillary third molar
B. Mandibular third molar
C. Maxillary second premolar
D. Mandibular second premolar

Mesial concavity making the prognosis poor for a furcation involvement is present in______?

A. Maxillary canine
B. Maxillary 1st premolar
C. Mandibular 1st premolar
D. Maxillary 2nd premolar

Corner stones of dental arches are:

A. Canines
B. First premolars
C. First molars
D. Second molars

Oblique ridge in maxillary first molar joins which of the following cusps________?

A. DL and DB
B. ML and MB
C. ML and DB
D. DL and MB

Upper 4 resembles 5 from which aspect ?

A. Buccally
B. Lingually
C. Occlusal
D. Proximally

Which of the following has a bifid root ?

A. 32,42
B. 31,41
C. 34,44
D. 13,23

Largest tooth in the mandibular arch is______?

A. Canine
B. Decidous first molar
C. Permanent first molar
D. Third molar

Cusp of carbelli is present on ________ surface of the permanent maxillary molar ?

A. Mesial surface
B. Palatal surface
C. Buccal surface
D. Mesial half of the palatal surface

On which of the following permanent teeth is it most difficult to distinguish between mesial and distal aspects ?

A. Maxillary central incisor
B. Mandibular central incisor
C. Mandibular lateral incisor
D. Mandibular second premolar

Single central pit is formed on occlusal surface of______?

A. Mandibular first premolar
B. Mandibular second premolar
C. Maxillary first premolar
D. Maxillary second premolar

In comparison to maxillary central incisor , Maxillary canine has a height of contour that is_____?

A. More
B. Less
C. Same
D. Different on different teeth

Tooth with smallest root is_____?

A. Maxillary central incisor
B. Mandibular lateral incisor
C. Maxillary lateral incisor
D. Mandibular central incisor

Which of the following is a smallest posterior tooth_____?

A. Maxillary first premolar
B. Mandibular first premolar
C. Maxillary second premolar
D. Mandibular second premolar

The mesial surface of the crown is almost parallel to long axis and the root of a____?

A. Maxillary 1st premolar
B. Mandibular 2nd premolar
C. Maxillary canine
D. Mandibular canine

Using occlusal morphology as guide , the Mandibular third molar is most similar to_____?

A. Maxillary permanent first molar
B. Mandibular permanent first molar
C. Mandibular permanent second molar
D. Mandibular deciduous second molar

Which of the following premolars has a mesial marginal ridge more cervical than the distal marginal ridge_______?

A. Maxillary 1st premolar
B. Maxillary 2ndpremolar
C. Mandibular 1st premolar
D. Mandibular 2nd premolar

A pronounced developmental groove is usually present on the mesial marginal ridge of a permanent_______?

A. Mandibular third molar
B. Mandibular second premolar
C. Maxillary second molar
D. Maxillary first premolar

Most common morpholgical variation is seen in______?

A. Maxillary lateral incisor
B. Mandibular lateral incisor
C. Maxillary canine
D. Mandibular canine

Which of the following teeth have more than one occlusal form____?

A. Maxillary 1st premolar
B. Maxillary 2nd premolar
C. Maxillary 1st molar
D. Mandibular 1stmolar

If a mandibular canine has bifurcated roots, they are most commonly placed______?

A. Mesial and distal
B. Facial and lingual
C. Mesiobuccal and distobuccal
D. Mesiolingual and distolingual

Largest cusp in permanent mandibular first molar is______?

A. Mesiobuccal
B. Distobuccal
C. Mesio lingual
D. Distal

Palatogingival groove is found in______?

A. Maxillary lateral incisor
B. Maxillary first premolar
C. Maxillary first molar
D. All of the above

The shape of the occlusal surface of the permanent maxillary first molar is______?

A. Oval
B. Trapezoidal
C. Triangular
D. Rhomboidal

The term” contact point” which is often used to designate the contact of teeth i the same arch is a____?

A. Synonym
B. Antonym
C. Misnomer
D. Laevonomer

The curvature of the cervical line of most teeth will be approximately____________?

A. 2 mm less distally than mesially
B. 1 mm less distally than mesially
C. 2 mm less lingually than buccally
D. 1 mm less lingually than buccally

In primates; a tooth with single conical cusp and single root is seen in_____?

A. Haplodont
B. Heterodont
C. Acrodont
D. Thecodont

The primary centre of formation of each lobe is present in___?

A. Apex of the root
B. Tip of the cusp
C. Centre of the crown
D. Centre of the tooth

The interdental papilla is located in the______?

A. Facial embrasure
B. Lingual embrasure
C. Cervical embrasure
D. Occlusal embrasure

Protective crests of contour on buccal and lingual surfaces are found_____?

A. In the middle third of the lingual
B. Nearest the occlusal third of the lingual
C. In the cervical third of the buccal
D. Both A and C

Buccal surface of posterior teeth are wider than lingual surface mesiodistally except in_____?

A. Maxillary first molar
B. Mandibular second premolar
C. Mandibular first molar
D. Maxillary second premolar

Which of the following are the functions of contact areas______?

A. Distribution of occlusal stresses
B. Protection of periodontium
C. Stabilization of dental arches
D. All of the above

Which four mandibular teeth are so aligned that when viewed from the occlusal, a straight line may be drawn bisecting the contact areas___?

A. 5,6,7,8
B. 4,5,6,7
C. 3,4,5,6
D. 2.3.4.5

Contact areas of anterior teeth which are placed in centre of middle third ______?

A. Mesial contacts of maxillary lateral and canine
B. Distal contacts of maxillary centrals and laterals
C. Distal contacts of maxillary laterals and canine
D. Mesial contacts of maxillary first and second premolar

Which of the following do not contribute to arch stability ?

A. Cusps
B. Root forms
C. Embrasures
D. Periodontal fibers

Mesial contact area of the permanent canine is at the_____?

A. Middle third
B. Junction of the incisal and middle thirds
C. Junction of the middle and cedrvical thirds
D. None of the above

Distal contact of upper first premolar is____?

A. Lower than mesial contact area
B. Little cervical to junction of occlusal and middle third of crown
C. Higher than mesial contact area
D. A and B

The contact area on the distal surface of a maxillary first premolar should be placed in_____?

A. Middle 3rd of proximal surface with lingual embrasure greater than the facial embrasure
B. Occlusal 3rd of proximal surface with the lingual embrasure greater than facial embrasure
C. Occlusal 3rd of proximal surface with facial embrasure greater than lingual embrasure
D. Middle 3rd with facial embrasure greater than the lingual embrasure

The tooth that is commonly seen in an abnormal relation and contact with its adjacent teeth of the same arch is _____?

A. Mandibular first premolar
B. Mandibular lateral incisor
C. Maxillary central incisor
D. Maxillary lateral incisor

Largest embrasure lies between_____?

A. Maxillary central incisors
B. Maxillary central and lateral incisor
C. Maxillary canine and first premolar
D. Maxillary lateral incisor and canine

The embrasure areas in the following areas are contentious______?

A. Labial and lingual
B. Lingual and Occlusal
C. Incisal and Occlusal
D. Labial and Occlusal

All embrasure spaces are reflection of the____?

A. Form of the teeth involved
B. Size of the teeth involved
C. Eruption sequence involved
D. None of the above

The biting forces at molar region during mastication is_____?

A. 20 to 55 pounds
B. 30 to 75 pounds
C. 50 to 75 pounds
D. 90 to 200 pounds

The faciolingual angulation of the upper central incisor is approximately_____?

A. 20°
B. 28°
C. 33°
D. 38°

All are true about calciotraumatic line, except_______?

A. Due to caries
B. Due to death of odontoblastic layer
C. It remains after caries is removed
D. Because of odontoblastic migration from cell rich zone

Posterior embrasures are generally larger on the lingual than on the facial, with the contact area within the facial moiety, except between maxillary_____?

A. Premolars
B. 1st and 2ndmolar
C. 1st premolar and cane
D. First molar and 2nd premolar

The distance from the CEJ to the alveolar crest normally is______?

A. 1 – 1.5 mm
B. 2 mm
C. 2 – 2.3 mm
D. 3 mm

Which teeth show less curvature on the crown above the cervical line than any other teeth_______?

A. Maxillary anterior
B. Mandibular canine
C. Mandibular anterior
D. Maxillary canine

Which anterior teeth have both mesial and distal contact areas of at the incisal third______?

A. Mandibular centrals
B. Mandibular laterals
C. Both A and B
D. None of the above

The contact area on the distal side of a maxillary first premolar is located ______?

A. Middle of the middle third with buccal embrasure wider than lingual
B. Middle of the middle third with lingual embrasure wider than buccal
C. Litter cervical to the junction of occlusal and middle third of the crown with wide occlusal embrasure
D. Cervical third with buccal embrasure wider than lingual embrasure

Generally , contact areas between posterior teeth are located in which directions from the centr of the proximal surface ____?

A. Facially and occlusally
B. Facially and gingivally
C. Lingually and gingivally
D. Lingually and occlusally

An imaginary occlusal curve that contacts the buccal and lingual cusp tips of mandibular buccal teeth is called the ____?

A. Catenary curve
B. Curve of spee
C. Monson curve
D. Wilson curve

The widest incisal embrasure is normally found between which of the following permanent maxillary teeth ______?

A. Central incisors
B. Central and lateral incisors
C. Lateral incisor and canine
D. First and 2nd premolar

Divergence from contact area in proximal surfaces causes embrasures_______?

A. Facially
B. Lingually
C. Cervically
D. Facially, lingually , cervically & occlusally

The largest embrasure in posterior teeth is the_____?

A. Buccal
B. Distal
C. Lingual
D. Occlusal

The mesial contact are of the permanent canine is at the______?

A. Middle third
B. Junction of incisal and medial thirds
C. Junction of the middle & cervical thirds
D. None of the above

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