All Free Oral Anatomy MCQs with Answers

• A. Six months IU
• B. 3 years ageExplore Anatomy Models
• C. 1 years after birth
• D. At birth

Explanation: The permanent first molar begins calcifying at birth, which is why it is often called the six-year molar because it erupts around age six…

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

Explanation: Primary teeth develop and complete their roots more rapidly than permanent teeth, so their root formation takes less time.

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

Explanation: At birth, the crowns of the primary incisors and primary first molars are already undergoing calcification.

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

Explanation: Around 8½ years, the four first permanent molars and eight permanent incisors are present, while the deciduous canines and molars remain…

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

Explanation: This is the typical early mixed dentition: permanent incisors and first molars have erupted, while the primary canines and molars are…

• A. Mandibular central incisor
• B. Maxillary central incisor
• C. Mandibular first molar
• D. Maxillary first molarAccess Clinical Journals

Explanation: The mandibular first permanent molars usually erupt at about six years and are commonly the first permanent teeth to appear.

• 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

Explanation: The usual primary eruption sequence is central incisors, lateral incisors, first molars, canines, and second molars.

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

Explanation: Calcification of the permanent first molar begins at birth, whereas its eruption occurs around six years of age.

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

Explanation: The maxillary canine is usually the last primary tooth to be replaced, at approximately 11 to 12 years.

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

Explanation: The alveolar process develops primarily in response to the formation and eruption of teeth, because it provides the bony sockets that…

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

Explanation: The maxillary central incisor usually erupts at about 7 to 8 years and its root completes approximately 2 to 3 years later.

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

Explanation: The maxillary permanent lateral incisor generally erupts between 8 and 9 years of age.

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

Explanation: The jagged edges are mamelons on newly erupted permanent incisors, not abnormally oversized teeth.

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

Explanation: Except for third molars, permanent crown formation is generally completed from birth to about 8 years.

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

Explanation: According to the Schour and Massler chronology, the crowns of the permanent first molars are completed at approximately 2½ to 3 years.

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

Explanation: Diphyodont animals develop two successive dentitions: a primary dentition followed by a permanent dentition.

• A. External and internal oblique
• B. External oblique and transversus abdominis
• C. Internal obliqueConsult Online Doctors
• D. Internal oblique and transversus abdominis

Explanation: The conjoint tendon, or inguinal falx, is formed by the fused aponeuroses of the internal oblique and transversus abdominis muscles.

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

Explanation: Desmodont is the periodontal ligament, the connective-tissue attachment between cementum and alveolar bone.

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

Explanation: Premolar alveoli commonly appear kidney-shaped in cross-section because the socket follows the characteristic contour and developmental…

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

Explanation: The alveolar process is especially thin on the buccal aspect of the mandibular central incisors because their roots lie close to the…