Oral Anatomy MCQs

Option A: External and internal oblique

Option B: External oblique and transversus abdominis

Option C: Internal oblique and transversus abdominis

Option D: Internal oblique

Correct Answer: Internal oblique and transversus abdominis ✔

Option A: 4 yrs

Option B: 6 yrs

Option C: 8 yrs

Option D: 10 yrs

Correct Answer: 4 yrs ✔

Option A: Tight contacts, absence of spacing

Option B: Shallow overjet and overbite

Option C: Flush terminal plane

Option D: Ovoid arch form

Correct Answer: Tight contacts, absence of spacing ✔

Option A: Mesiobuccal

Option B: Distobuccal

Option C: Mesiolingual

Option D: Distolingual

Correct Answer: Mesiolingual ✔

Option A: In prism arrangement

Option B: in mineral content

Option C: No difference in enamel, difference in dentin

Option D: None of the above

Correct Answer: In prism arrangement ✔

Option A: Buccal surfaces of the permanent molars are flatter

Option B: Cervical ridges are more pronounced in permanent molars

Option C: Root trunks of decidous teeth are larger compared with their overall root lengths

Option D: Crowns of decidous incisors are wider mesiodistally than their cervico incisal lengths

Correct Answer: Crowns of decidous incisors are wider mesiodistally than their cervico incisal lengths ✔

Option A: Permanent central incisors

Option B: Decidous maxillary central incisors

Option C: Permanent maxillary canines

Option D: Permanent mandibular lateral incisors

Correct Answer: Decidous maxillary central incisors ✔

Option A: Mesiolingual

Option B: Distolingual

Option C: Mesiobuccal

Option D: Distobuccal

Correct Answer: Mesiolingual ✔

Option A: Mandibular first molar

Option B: Maxillary first molar

Option C: Mandibular second molar

Option D: Maxillary second molar

Correct Answer: Mandibular first molar ✔

Option A: Thickness of enamel and dentin

Option B: Pulp chambers are longer

Option C: Roots are flaring

Option D: All of the above

Correct Answer: All of the above ✔

Option A: Wide and deep

Option B: Shallow and narrow

Option C: Wide and narrow

Option D: Shallow and wide

Correct Answer: Shallow and wide ✔

Option A: Permanent second molar

Option B: Permanent first molar

Option C: Second premolar

Option D: Primary first molar

Correct Answer: Permanent first molar ✔

Option A: Primary roots show less a accessory and lateral canals

Option B: Primary roots resorb more easily

Option C: Primary roots are shorter

Option D: None of the above

Correct Answer: Primary roots show less a accessory and lateral canals ✔

Option A: One

Option B: Two

Option C: Three

Option D: Four

Correct Answer: Three ✔

Option A: 2

Option B: 3

Option C: 4

Option D: 5

Correct Answer: 4 ✔

Option A: Mandibular 1st molar

Option B: Mandibular2nd molar

Option C: Maxillary 2nd molar

Option D: None of the above

Correct Answer: Mandibular2nd molar ✔

Option A: Grooves

Option B: Fissures

Option C: Cusps

Option D: All of the above

Correct Answer: Grooves ✔

Option A: Slender mesiodistally

Option B: Slender anteroposteriorly

Option C: Bulkier mesiodistally

Option D: Buliker anteroposteriorly

Correct Answer: Slender mesiodistally ✔

Option A: Four pulp horn and three root canal

Option B: Three pulp horn and three root canal

Option C: Two pulp horn and two root canal

Option D: Two pulp horn and three root canal

Correct Answer: Four pulp horn and three root canal ✔

Option A: 25 μm

Option B: 50μm

Option C: 75μm

Option D: 100μm

Correct Answer: 25 μm ✔

Option A: Same as permanent teeth

Option B: Inclined in an apical direction in the cervical third of crown

Option C: Inclined in an occlusal direction in the cervical third of crown

Option D: None of the above

Correct Answer: Inclined in an occlusal direction in the cervical third of crown ✔

Option A: Less

Option B: Greater

Option C: The same

Option D: Not related

Correct Answer: Greater ✔

Option A: Decidous mandibular 1st molar

Option B: Decidous maxillary 1st molar

Option C: Decidous maxillary 2nd molar

Option D: Decidous mandibular 2nd molar

Correct Answer: Decidous maxillary 2nd molar ✔

Option A: 3

Option B: 6

Option C: 4

Option D: 5

Correct Answer: 5 ✔

Option A: Calcification of maxillary primary first premolar is completed at birth

Option B: Mandibular first molar erupts at one and half years of age

Option C: The crowns of primary dentition are more yellowish than permanent

Option D: The primary dentition is initiated at 10th month in uterus

Correct Answer: Mandibular first molar erupts at one and half years of age ✔

Option A: Enamel rods at cervical region directed occlusally

Option B: Results in constriction at cervical region

Option C: Is characteristic of decidous teeth

Option D: All of the above

Correct Answer: Is characteristic of decidous teeth ✔

Option A: Mandibular central incisor

Option B: Mandibular first molar

Option C: Maxillary central incisor

Option D: Maxillary second molar

Correct Answer: Mandibular central incisor ✔

Option A: 4th month of life

Option B: 4th month in utero

Option C: 41/2 month in utero

Option D: 5th month in utero

Correct Answer: 41/2 month in utero ✔

Option A: Central incisors

Option B: Mandibular first molar

Option C: Mandibular second molar

Option D: Canines

Correct Answer: Mandibular first molar ✔

Option A: Decidous maxillary 2nd molar

Option B: Decidous maxillary 1st molar

Option C: Decidous mandibular 2nd molar

Option D: Decidous mandibular 1st molar

Correct Answer: Decidous maxillary 2nd molar ✔

Option A: From birth to 11 years

Option B: From 6 months to 11 years

Option C: From 6 months to 6 years

Option D: From 6 years to 11 years

Correct Answer: From 6 months to 6 years ✔

Option A: Maxillary first

Option B: Maxillary second

Option C: Mandibular first

Option D: Mandibular second

Correct Answer: Maxillary first ✔

Option A: 12 CDE6

Option B: 12C456

Option C: 123DE6

Option D: 123456

Correct Answer: 12 CDE6 ✔

Option A: One year

Option B: Two years

Option C: Three years

Option D: Four years

Correct Answer: Three years ✔

Option A: 2 years

Option B: 4 years

Option C: 6 years

Option D: 8 years

Correct Answer: 8 years ✔

Option A: 3 years

Option B: 1 years

Option C: 2 years

Option D: 1 month

Correct Answer: 1 years ✔

Option A: 8 months

Option B: 18 months

Option C: 8 years

Option D: 16 years

Correct Answer: 8 years ✔

Option A: Premolars, incisors and 1st molars

Option B: Canine and 2nd molars

Option C: Canines, premolars and2nd molars

Option D: Incisors and 1st molars

Correct Answer: C. Canines, premolars and2^nd molars ✔

Option A: 3-4 months

Option B: 4-5 months

Option C: 5-6 months

Option D: 6-7 months

Correct Answer: 4-5 months ✔

Option A: 20 months

Option B: 18 months

Option C: 24 months

Option D: 28 months

Correct Answer: 28 months ✔

Option A: 20

Option B: 22

Option C: 24

Option D: 30

Correct Answer: 24 ✔

Option A: 6 EDC21/ 6EDC21

Option B: 6EDCBA/ 6EDC21

Option C: EDC21/EDC21

Option D: 76EDC21/ 7EDC21

Correct Answer: 6 EDC21/ 6EDC21 ✔

Option A: 4 months in utere

Option B: Birth

Option C: 4 months after birth

Option D: One year after birth

Correct Answer: 4 months in utere ✔

Option A: 1-6-2-3-5-4-7-8

Option B: 6-1-2-4-5-3-7-8

Option C: 6-1-2-3-4-5-7-8

Option D: 6-1-2-4-3-5-7-8

Correct Answer: 6-1-2-3-4-5-7-8 ✔

Option A: It is too early to make final predication

Option B: The teeth may develop later

Option C: Primary second molar extracted to allow mesial drifting of permanent first molar

Option D: The child may never develop premolars

Correct Answer: The teeth may develop later ✔

Option A: 1-6-2-3-4-7-5-8

Option B: 2-3-1-6-7-5-4-8

Option C: 6-1-2-4-3-5-7-8

Option D: 6-1-2-3-4-5-7-8

Correct Answer: 6-1-2-4-3-5-7-8 ✔

Option A: Before lateral incisor

Option B: Before first molar

Option C: After first molar

Option D: After second molar

Correct Answer: After first molar ✔

Option A: 2 years

Option B: 4 years

Option C: 6 years

Option D: 8 years

Correct Answer: 4 years ✔

Option A: 8-9 years

Option B: 6-7 years

Option C: 10-11 years

Option D: 8-9 months

Correct Answer: 8-9 years ✔

Option A: Call and do radiographic survey

Option B: Tell her that it is normal at this age

Option C: Child has retarded growth

Option D: Systemic problem

Correct Answer: Tell her that it is normal at this age ✔

Option A: 6 months of intra utrerine life

Option B: At birth

Option C: Before decidous incisors

Option D: About 1 year after birth

Correct Answer: At birth ✔

Option A: 6 months in utero

Option B: 6 months after birth

Option C: 9 months in utero

Option D: 9 months after birth

Correct Answer: 9 months after birth ✔

Option A: 6th month I.U

Option B: 1st year of life

Option C: 2nd year of life

Option D: 8th year of life

Correct Answer: 8th year of life ✔

Option A: 11 weeks in utero

Option B: 14 weeks in utero

Option C: 16 weeks in utero

Option D: 6 weeks in utero

Correct Answer: 11 weeks in utero ✔

Option A: Maxillary central incisor

Option B: Mandibular lateral incisor

Option C: Maxillary lateral incisor

Option D: Maxillary canine

Correct Answer: Maxillary canine ✔

Option A: 14 to 17 weeks in utero

Option B: 9 to 12 weeks in utero

Option C: 6- to 9 weeks in utero

Option D: 17 to 20 weeks in utero

Correct Answer: 14 to 17 weeks in utero ✔

Option A: Calcification of primary teeth is almost complete at time of birth

Option B: Calcification of all primary teeth and few permanent teeth complete at birth

Option C: Calcification of all permanent teeth complete at birth

Option D: Calcification of primary teeth starts around birth

Correct Answer: Calcification of primary teeth is almost complete at time of birth ✔

Option A: Seventh and eight years

Option B: Seventh and ninth years

Option C: Seventh and tenth years

Option D: Seventh and Twelfth years

Correct Answer: Seventh and Twelfth years ✔

Option A: Maxillary incisors

Option B: Maxillary canines

Option C: Mandibular incisors

Option D: Mandibular canines

Correct Answer: B & D ✔

Option A: 8-9 years

Option B: 10-12 years

Option C: 6-7 years

Option D: 17-25 years

Correct Answer: 8-9 years ✔

Option A: After completion of root

Option B: When apical third root is still to be formed

Option C: When half of the root is still to be formed

Option D: when root formation starts

Correct Answer: When half of the root is still to be formed ✔

Option A: 7-8 years

Option B: 8-9 years

Option C: 9-10 years

Option D: 10 – 11 years

Correct Answer: 9-10 years ✔

Option A: 3-4 months

Option B: 10-12 months

Option C: 2-3 years

Option D: 3-4 years

Correct Answer: 3-4 months ✔

Option A: After D

Option B: Before B

Option C: After B

Option D: After E

Correct Answer: After D ✔

Option A: Mandibular central incisor

Option B: Mandibular first molar

Option C: Maxillary central incisor

Option D: Maxillary second molar

Correct Answer: Mandibular central incisor ✔

Option A: First molar

Option B: Central incisors

Option C: Canines

Option D: Premolars

Correct Answer: Canines ✔

Option A: Superior and facial

Option B: Inferior and facial

Option C: Superior and lingual

Option D: Inferior and lingual

Correct Answer: Inferior and lingual ✔

Option A: 1-1½

Option B: 2-3

Option C: 3-4

Option D: 4-5

Correct Answer: 2-3 ✔

Option A: 6 years

Option B: 8 years

Option C: 12 years

Option D: 17 years

Correct Answer: 17 years ✔

Option A: Only molars

Option B: All teeth except third molars

Option C: 1,2,4,5,6,7 in all quadrants

Option D: 1,2,6 in all quadrants

Correct Answer: 1,2,6 in all quadrants ✔

Option A: Six months IU

Option B: At birth

Option C: 1 years after birth

Option D: 3 years age

Correct Answer: At birth ✔

Option A: Take less time

Option B: Take more time

Option C: Same time

Option D: Is complete when tooth erupts in oral cavity

Correct Answer: Take less time ✔

Option A: Primary incisors & first molar

Option B: Primary canines & second molars

Option C: Permanent canines

Option D: Permanent 3rd molar

Correct Answer: Primary incisors & first molar ✔

Option A: 8½ years

Option B: 11½ years

Option C: 4½ years

Option D: 13½ years

Correct Answer: 8½ years ✔

Option A: Herbivorous

Option B: Omnivorous

Option C: Carnivorous

Option D: None of the above

Correct Answer: Omnivorous ✔

Option A: 3-6 years

Option B: 7-10 years

Option C: 11-14 years

Option D: 15- 18 years

Correct Answer: 7-10 years ✔

Option A: Mandibular central incisor

Option B: Mandibular first molar

Option C: Maxillary central incisor

Option D: Maxillary first molar

Correct Answer: Mandibular first molar ✔

Option A: Central incisors, first molars, lateral incisors, second molars, canines

Option B: Central incisors, lateral incisors, canines, second molars, first molars

Option C: Central incisors, lateral incisors, first molars canines, second molars

Option D: Central incisors, lateral incisors, first molars second molars, canines

Correct Answer: Central incisors, lateral incisors, first molars canines, second molars ✔

Option A: Third month of intrauterine life

Option B: In the sixth month of intrauterine life

Option C: At birth

Option D: In the third month of extra uterine life

Correct Answer: At birth ✔

Option A: Maxillary second molar

Option B: Mandibular second molar

Option C: Maxillary canine

Option D: Mandibular canine

Correct Answer: Maxillary canine ✔

Option A: The tooth with one wall pocket

Option B: Tooth with three walled pocket

Option C: periodontal ligament

Option D: Dehiscence

Correct Answer: periodontal ligament ✔

Option A: Esthetics

Option B: Centric stability

Option C: Chewing efficiency

Option D: Soft tissue protection

Correct Answer: Soft tissue protection ✔

Option A: Embrasure of 37 & 38

Option B: Embrasure of 36 & 37

Option C: Mesial pit of 37

Option D: Immediately incisal to cingulam

Correct Answer: Embrasure of 37 & 38 ✔

Option A: Buccal side

Option B: Distal side

Option C: Mesial side

Option D: Lingual side

Correct Answer: Mesial side ✔

Option A: Fossa and rdges

Option B: Grooves and embrasures

Option C: Lingual cusps of mandibular teeth

Option D: Occlusal pits and fissures of mandibular teeth

Correct Answer: Grooves and embrasures ✔

Option A: Buccals slopes of buccal cusps of maxillary posterior teeth

Option B: Buccal slopes of lingual cusps of maxillary posterior teeth

Option C: Lingual slopes of lingual cusps of mandibular posterior teeth

Option D: All slopes of lingual cusps of mandibular posterior teeth

Correct Answer: Buccal slopes of lingual cusps of maxillary posterior teeth ✔

Option A: Horizontal overlap

Option B: Vertical overlap

Option C: Transverse plane discrepancy

Option D: All the above

Correct Answer: Horizontal overlap ✔

Option A: 10 – 14 years

Option B: 15 -25 years

Option C: Above 30 years

Option D: Edentulous patients

Correct Answer: Above 30 years ✔

Option A: Cusp – to – cusp contact

Option B: Edge- to – edge contact

Option C: Marginal contact

Option D: Surface – to- surface contact

Correct Answer: D. Surface – to- surface contact ✔

Option A: Stamp cusps

Option B: Centric holding cusps

Option C: Supporting cusps

Option D: Non- supporting cusps

Correct Answer: Non- supporting cusps ✔

Option A: Wilson curve

Option B: Mansoon curve

Option C: Curve of spee

Option D: Caternary curve

Correct Answer: Wilson curve ✔

Option A: Cusp to cusp contact

Option B: Edge to edge contact

Option C: Marginal contact

Option D: Surface to surface contact

Correct Answer: Surface to surface contact ✔

Option A: Centric occlusion

Option B: Rest position

Option C: Protrusive contacts

Option D: Laterotrusive contacts

Correct Answer: Centric occlusion ✔

Option A: Within the incisor thirds

Option B: At the junction of middle and cervical thirds

Option C: At the linguo cervical ridges

Option D: Immediately incisal to cingulam

Correct Answer: Within the incisor thirds ✔

Option A: Maxillary permanent first molar

Option B: Maxillary permanent second molar

Option C: Maxillary primary first molar

Option D: Maxillary primary second molar

Correct Answer: Maxillary permanent first molar ✔

Option A: Distal fossa of mandibular 2ndpremolar

Option B: Mesial fossa of mandibular 1st molar

Option C: Distal marginal ridge of mandibular 2ndmolar

Option D: Distal marginal ridge of mandibular 1st premolar

Correct Answer: Distal fossa of mandibular 2ndpremolar ✔

Option A: Facial embrasure of canine and premolar

Option B: incisal embrasure of canine and premolar

Option C: Distal ridge of the cusp of mandibular canine

Option D: Mesial ridge on the facial cusp of mandibular first premolar

Correct Answer: Facial embrasure of canine and premolar ✔

Option A: Extruded

Option B: Intruded

Option C: Protruded

Option D: Retruded

Correct Answer: Extruded ✔

Option A: Distobuccal groove

Option B: Mesial surface

Option C: Mesiobuccal surface

Option D: Transverse groove

Correct Answer: Mesiobuccal surface ✔

Option A: Lateral incisors

Option B: Permanent canines

Option C: Permanent central incisors

Option D: Third molars

Correct Answer: Third molars ✔