ADAP Oral Anatomy 2 — Questions and Answers
Question 1: Which type of tooth has three roots?
- Mandibular first molar
- Maxillary first premolar
- Maxillary first molar (Correct answer)
- Mandibular canine
Correct answer: Maxillary first molar
Maxillary first molars typically have three roots: mesiobuccal, distobuccal, and palatal.
Question 2: The cementoenamel junction (CEJ) is also referred to as the:
- Apical foramen
- Cervical line (Correct answer)
- Furcation
- Contact area
Correct answer: Cervical line
The cementoenamel junction is also called the cervical line because it marks the neck (cervix) of the tooth where enamel meets cementum.
Question 3: Which structure connects the tooth to the alveolar bone?
- Gingival sulcus
- Periodontal ligament (Correct answer)
- Cementum
- Dental pulp
Correct answer: Periodontal ligament
The periodontal ligament consists of collagen fibers that anchor the tooth root to the surrounding alveolar bone.
Question 4: The raised, rounded area on the lingual surface of anterior teeth is called the:
- Cusp
- Cingulum (Correct answer)
- Marginal ridge
- Fossa
Correct answer: Cingulum
The cingulum is a convex, rounded eminence on the cervical third of the lingual surface of anterior teeth.
Question 5: How many permanent teeth does an adult typically have?
- 28
- 30
- 32 (Correct answer)
- 36
Correct answer: 32
Adults typically have 32 permanent teeth, including four third molars (wisdom teeth).
Question 6: The crown of a tooth is covered by:
- Cementum
- Dentin
- Enamel (Correct answer)
- Bone
Correct answer: Enamel
Enamel, the hardest substance in the human body, covers the anatomical crown of the tooth.
Question 7: Which teeth are referred to as the 'cornerstone' of the dental arches?
- Central incisors
- Lateral incisors
- Canines (Correct answer)
- First premolars
Correct answer: Canines
Canines are called the cornerstones of the dental arch because they are located at the corners of the mouth and are the longest-rooted teeth.
ADAP Oral Anatomy 2
Which type of tooth has three roots?