COLORADO DENTIST LICENSING EXAM QUESTIONS
AND CORRECT ANSWERS (VERIFIED ANSWERS)
Q&A 2026 |INSTANT DONLOAD PDF
1. Which structure primarily produces enamel in tooth
development?
A. Odontoblasts
B. Ameloblasts
C. Cementoblasts
D. Fibroblasts
Rationale: Ameloblasts are responsible for enamel formation
during tooth development, while odontoblasts form dentin.
Correct Answer: B. Ameloblasts
2. The hardest substance in the human body is:
A. Dentin
B. Cementum
C. Enamel
D. Bone
Rationale: Enamel is highly mineralized and contains the
highest hydroxyapatite content.
Correct Answer: C. Enamel
,3. The primary function of saliva includes all EXCEPT:
A. Lubrication
B. Digestion of carbohydrates
C. Tooth mineralization support
D. Bone formation
Rationale: Saliva aids digestion, lubrication, and
remineralization but does not form bone.
Correct Answer: D. Bone formation
4. Which nerve supplies general sensation to the maxillary
teeth?
A. Mandibular nerve
B. Maxillary nerve
C. Facial nerve
D. Glossopharyngeal nerve
Rationale: The maxillary division of the trigeminal nerve
supplies upper teeth sensation.
Correct Answer: B. Maxillary nerve
5. Dental plaque is best described as:
A. Hardened calculus
B. Mineralized bacteria biofilm
C. Non-mineralized bacterial biofilm
D. Salivary protein layer only
,Rationale: Plaque is a soft, sticky, non-mineralized biofilm of
bacteria.
Correct Answer: C. Non-mineralized bacterial biofilm
6. Which vitamin is essential for calcium absorption in teeth
and bones?
A. Vitamin A
B. Vitamin C
C. Vitamin D
D. Vitamin K
Rationale: Vitamin D regulates calcium and phosphate
metabolism.
Correct Answer: C. Vitamin D
7. The periodontal ligament connects:
A. Enamel to dentin
B. Cementum to alveolar bone
C. Pulp to enamel
D. Gingiva to enamel
Rationale: PDL anchors tooth root (cementum) to alveolar
bone.
Correct Answer: B. Cementum to alveolar bone
8. The primary blood supply to the teeth comes from:
, A. Carotid artery branches
B. Facial artery only
C. Maxillary artery branches
D. Jugular vein
Rationale: Maxillary artery branches supply dental structures.
Correct Answer: C. Maxillary artery branches
9. Which cell type forms dentin?
A. Ameloblasts
B. Odontoblasts
C. Osteoclasts
D. Fibroblasts
Rationale: Odontoblasts line the pulp and produce dentin.
Correct Answer: B. Odontoblasts
10. The normal adult dentition consists of:
A. 20 teeth
B. 24 teeth
C. 28–32 teeth
D. 36 teeth
Rationale: Adults typically have 32 permanent teeth including
third molars.
Correct Answer: C. 28–32 teeth
AND CORRECT ANSWERS (VERIFIED ANSWERS)
Q&A 2026 |INSTANT DONLOAD PDF
1. Which structure primarily produces enamel in tooth
development?
A. Odontoblasts
B. Ameloblasts
C. Cementoblasts
D. Fibroblasts
Rationale: Ameloblasts are responsible for enamel formation
during tooth development, while odontoblasts form dentin.
Correct Answer: B. Ameloblasts
2. The hardest substance in the human body is:
A. Dentin
B. Cementum
C. Enamel
D. Bone
Rationale: Enamel is highly mineralized and contains the
highest hydroxyapatite content.
Correct Answer: C. Enamel
,3. The primary function of saliva includes all EXCEPT:
A. Lubrication
B. Digestion of carbohydrates
C. Tooth mineralization support
D. Bone formation
Rationale: Saliva aids digestion, lubrication, and
remineralization but does not form bone.
Correct Answer: D. Bone formation
4. Which nerve supplies general sensation to the maxillary
teeth?
A. Mandibular nerve
B. Maxillary nerve
C. Facial nerve
D. Glossopharyngeal nerve
Rationale: The maxillary division of the trigeminal nerve
supplies upper teeth sensation.
Correct Answer: B. Maxillary nerve
5. Dental plaque is best described as:
A. Hardened calculus
B. Mineralized bacteria biofilm
C. Non-mineralized bacterial biofilm
D. Salivary protein layer only
,Rationale: Plaque is a soft, sticky, non-mineralized biofilm of
bacteria.
Correct Answer: C. Non-mineralized bacterial biofilm
6. Which vitamin is essential for calcium absorption in teeth
and bones?
A. Vitamin A
B. Vitamin C
C. Vitamin D
D. Vitamin K
Rationale: Vitamin D regulates calcium and phosphate
metabolism.
Correct Answer: C. Vitamin D
7. The periodontal ligament connects:
A. Enamel to dentin
B. Cementum to alveolar bone
C. Pulp to enamel
D. Gingiva to enamel
Rationale: PDL anchors tooth root (cementum) to alveolar
bone.
Correct Answer: B. Cementum to alveolar bone
8. The primary blood supply to the teeth comes from:
, A. Carotid artery branches
B. Facial artery only
C. Maxillary artery branches
D. Jugular vein
Rationale: Maxillary artery branches supply dental structures.
Correct Answer: C. Maxillary artery branches
9. Which cell type forms dentin?
A. Ameloblasts
B. Odontoblasts
C. Osteoclasts
D. Fibroblasts
Rationale: Odontoblasts line the pulp and produce dentin.
Correct Answer: B. Odontoblasts
10. The normal adult dentition consists of:
A. 20 teeth
B. 24 teeth
C. 28–32 teeth
D. 36 teeth
Rationale: Adults typically have 32 permanent teeth including
third molars.
Correct Answer: C. 28–32 teeth
