Question: Temporary structures in enamel organ are (before enamel formation) ?

• 1. Enamel knot
• 2. Enamel cord
• 3. Both A and B
• 4. Enamel Cuticle

Question: Lip furrow band is______________?

• 1. Vestibular lamina
• 2. Successional lamina
• 3. Dental lamina
• 4. Basal lamina

Question: Which of the following anomalies occur during the initiation and proliferation of tooth development ?

• 1. Amelogenisis imperfecta
• 2. Dentinogenesis imperfecta
• 3. Enamel hypoplasia
• 4. Oligodontia

Question: The hertwig’s epithelial root shealth is essential to development of the root because it_______________?

• 1. Gives rise to cementoblasts that produce cementum of the root
• 2. Moulds the shape of roots and stimulates differentiation of odontoblasts
• 3. Given rise to odontoblasts that lay down dentin of the root
• 4. Remians as an essential constituents of the periodontal ligament

Question: The formation of the dental lamina is initiated by______________?

• 1. Forebrain
• 2. Rathke’s pouch
• 3. Neural crest cells
• 4. Odontoblasts

Question: In multirooted teeth, formation of multiple roots is due to presence of_____________?

• 1. Epithelial diaphragm
• 2. Cell rests of Malassez
• 3. Toot bud division or bell stage
• 4. None of the above

Question: First appearance of tooth formation occurs in____________?

• 1. 6th week IU
• 2. 2nd week IU
• 3. 9th week IU
• 4. 4th week IU

Question: Disturbance during the morphodifferentition stage of tooth development will result in______________?

• 1. Change in number of teeth
• 2. Ameloblastoma
• 3. Change in form and shape of the teeth
• 4. Hypoplasia

Question: Dental papilla gives rise to_____________?

• 1. Pulp only
• 2. Pulp & Dentin
• 3. Pulp & Periodontal ligament
• 4. All of the above

Question: The bud, cap and bell stage of the developing tooth are based, on growth of the______________?

• 1. Stellate reticulum
• 2. Dental papilla
• 3. Enamel organ
• 4. Dental sac