Lefture 8

Question 1

Where do ameloblasts originate during enamel matrix formation?
• a. External adamantine epithelium
• b. Dental papilla
• c. Tomes processes
• d. Stratum intermedium

Answer 1

Tomes processes

Question 2

What is the main composition of cementum in terms of mineral substances?
• a. 50%
• b. 70%
• c. 30%
• d. 10%

Answer 2

50%

Question 3

Which phase involves circular epithelial proliferation forming Hertwig’s sheath?
• a. Root development
• b. Mineralization
• c. Amelogenesis
• d. Proliferation

Answer 3

Root development

Question 4

What is the primary function of the periodontal ligament?
• a. Dentin formation
• b. Remodeling and redirection
• c. Enamel secretion
• d. Odontoblast activation

Answer 4

Remodelling and redirection

Question 5

What marks the onset of amelogenesis, consecutive to dentin deposition?
• a. Matrix formation
• b. Root development
• c. Mineralization
• d. Proliferation

Answer 5

Matrix formation

Question 6

What are the epithelial rests of Malassez associated with?
• a. Amelogenesis
• b. Cementogenesis
• c. Dentinogenesis
• d. Tooth eruption

Answer 6

Tooth eruption

Question 7

Which anomaly involves the partial or total absence of tooth buds?
• a. Macrodontia
• b. Hyperdontia
• c. Anodontia
• d. Ectopia

Answer 7

Anodontia

Question 8

In dentinogenesis, what is the color change associated with Dentinogenesis Imperfecta?
• a. Pink
• b. Blue-grey
• c. Yellow
• d. White

Answer 8

Blue-grey

Question 9

What marks the beginning of the pre-functional eruptive phase during tooth eruption?
• a. Root formation
• b. Intraoral movement
• c. Penetration of the crown
• d. Movement toward the oral cavity

Answer 9

Penetration of the crown

Question 10

What is the primary characteristic of Cleidocranial Dysplasia (CCD)?
• a. Rapid tooth eruption
• b. Clavicle flattening
• c. Ectopic tooth location
• d. Alveolar bone thinning

Answer 10

Clavicle flattening