ADAP Oral Anatomy 3 — Questions and Answers
Question 1: The area where the roots of a multi-rooted tooth divide is called the:
- Apex
- Furcation (Correct answer)
- Cervix
- Cusp
Correct answer: Furcation
The furcation is the area where the roots of a multi-rooted tooth diverge from the crown.
Question 2: Which primary teeth are NOT replaced by permanent premolars?
- Primary canines
- Primary first molars
- Primary second molars (Correct answer)
- Primary incisors
Correct answer: Primary second molars
Primary second molars are succeeded by permanent second premolars, not by permanent molars — permanent molars erupt posterior to the primary dentition with no predecessors.
Question 3: The lingual surface of mandibular incisors often has a shallow depression called the:
- Fossa (Correct answer)
- Pit
- Groove
- Cusp of Carabelli
Correct answer: Fossa
Mandibular incisors have a lingual fossa, a shallow concave depression on their lingual surface.
Question 4: Which nerve provides sensory innervation to the mandibular teeth?
- Infraorbital nerve
- Inferior alveolar nerve (Correct answer)
- Buccal nerve
- Mental nerve
Correct answer: Inferior alveolar nerve
The inferior alveolar nerve, a branch of the trigeminal nerve (V3), provides sensory innervation to all mandibular teeth.
Question 5: Dentin makes up the bulk of the tooth and is produced by:
- Ameloblasts
- Osteoblasts
- Odontoblasts (Correct answer)
- Cementoblasts
Correct answer: Odontoblasts
Odontoblasts are the cells responsible for producing and maintaining dentin throughout the life of the tooth.
Question 6: The triangular space near the gingiva between adjacent teeth is called the:
- Contact point
- Embrasure (Correct answer)
- Interproximal space
- Col
Correct answer: Embrasure
Embrasures are the V-shaped spaces that open toward the buccal, lingual, occlusal, and gingival aspects between adjacent teeth.
Question 7: Which tooth has a prominent Cusp of Carabelli?
- Mandibular first molar
- Maxillary second premolar
- Maxillary first molar (Correct answer)
- Mandibular second molar
Correct answer: Maxillary first molar
The Cusp of Carabelli is a fifth accessory cusp found on the mesiolingual surface of the maxillary first molar.
ADAP Oral Anatomy 3
The area where the roots of a multi-rooted tooth divide is called the: