Development And Growth Of Teeth MCQs

Option A: Enamel cannot form in absence of dentin

Option B: The formation of enamel and dentin are independent of each other

Option C: Enamel formation can occur in absence of dentin

Option D: None of the above

Correct Answer: Enamel cannot form in absence of dentin ✔

Option A: 1 year

Option B: 2 years

Option C: 3 years

Option D: 4 years

Correct Answer: 4 years ✔

Option A: Determination of shape of crown and root

Option B: Formation of periodontal ligament

Option C: Formation of cementum

Option D: Formation of pulp

Correct Answer: Determination of shape of crown and root ✔

Option A: Bud stage begins

Option B: Cap stage begins

Option C: Bell stage begins

Option D: Dental lamina begins forming

Correct Answer: Dental lamina begins forming ✔

Option A: Outer and inner enamel epithelium

Option B: Stratum intermedium

Option C: Stellate reticulum

Option D: Hyaline layer of Hopewell-smill

Correct Answer: Outer and inner enamel epithelium ✔

Option A: Epithelial rests of Malassez

Option B: Enamel pearls

Option C: Rests of serrae

Option D: All of the above

Correct Answer: Rests of serrae ✔

Option A: Defects in cementogenesis

Option B: Dividing epithelial bridges

Option C: Break in Hertwig’s root sheath

Option D: Adherent epithelial rests

Correct Answer: C. Break in Hertwig’s root sheath ✔

Option A: Initiation

Option B: Differentiation

Option C: Apposition

Option D: Calcification

Correct Answer: Initiation ✔

Option A: Dental papilla

Option B: Reduced enamel organ

Option C: Dental Sac

Option D: Dental pulp

Correct Answer: Dental Sac ✔

Option A: Successional lamina

Option B: Dental lamina

Option C: Stellate reticulum

Option D: Neutral ectodermal cells

Correct Answer: Successional lamina ✔

Option A: Bud stage

Option B: Advanced bell stage

Option C: Cap stage

Option D: Bell stage

Correct Answer: Cap stage ✔

Option A: Inner enamel epithelium

Option B: Outer enamel epithelium

Option C: Stellate reticulum

Option D: Stratum intermedium

Correct Answer: Stellate reticulum ✔

Option A: Bell stage

Option B: Cap stage

Option C: Bud stage

Option D: Advanced bell stage

Correct Answer: Bell stage ✔

Option A: Hutchinson’s incisor

Option B: Osteodentin formation

Option C: Enamel hypoplasia

Option D: Anodontia

Correct Answer: Enamel hypoplasia ✔

Option A: After dentin formation

Option B: Before dentin formation

Option C: Both are formed at same time

Option D: None of the above

Correct Answer: After dentin formation ✔

Option A: Shape of enamel organ

Option B: Shape of tooth germ

Option C: Function of enamel organ

Option D: Shape of dental papilla

Correct Answer: Shape of tooth germ ✔

Option A: Ectoderm, mosoderm

Option B: Ectoderm

Option C: Mesoderm

Option D: Ectoderm and endoderm

Correct Answer: Ectoderm, mosoderm ✔

Option A: Adolescent stage

Option B: 5-10 years

Option C: Embryonic stage

Option D: None of the above

Correct Answer: Embryonic stage ✔

Option A: Cells of inner enamel epithelium

Option B: Cells of outer enamel epithelium

Option C: Cells of stellate reticulum

Option D: Cells of stratum intermedium

Correct Answer: Cells of inner enamel epithelium ✔

Option A: morphodifferentiation

Option B: reversal of functional polarity

Option C: Formation of hammock ligament

Option D: Increased mitotic activity

Correct Answer: Increased mitotic activity ✔

Option A: Dental papilla

Option B: Dental follicle

Option C: Inner enamel epithelium

Option D: Enamel Knot

Correct Answer: Enamel Knot ✔

Option A: Dentin

Option B: Cementum

Option C: Pulp

Option D: Enamel

Correct Answer: Enamel ✔

Option A: Peg laterals

Option B: Microdontia

Option C: Supernumerary tooth

Option D: Interglobular dentin

Correct Answer: Interglobular dentin ✔

Option A: Dental lamina

Option B: Enamel organ

Option C: Hertwig’s root sheath

Option D: All of the above

Correct Answer: Enamel organ ✔

Option A: Bell-bud-cap

Option B: Cap-bell-bud

Option C: Bud-cap-bell

Option D: Bell-cap-bud

Correct Answer: Bud-cap-bell ✔

Option A: Morphodifferentiation

Option B: Histodifferentiation

Option C: Apposition

Option D: Initiation

Correct Answer: Histodifferentiation ✔

Option A: Occlusal surface of premolars

Option B: Furcation areas of permanent molars

Option C: On the incisal edges of incisors

Option D: None of the above

Correct Answer: Furcation areas of permanent molars ✔

Option A: Dental sac

Option B: Odontoblastic process

Option C: Ree

Option D: Dental Papilla

Correct Answer: Dental sac ✔

Option A: Enamel knot

Option B: Enamel cord

Option C: Both A and B

Option D: Enamel Cuticle

Correct Answer: Both A and B ✔

Option A: Vestibular lamina

Option B: Successional lamina

Option C: Dental lamina

Option D: Basal lamina

Correct Answer: Vestibular lamina ✔

Option A: Amelogenisis imperfecta

Option B: Dentinogenesis imperfecta

Option C: Enamel hypoplasia

Option D: Oligodontia

Correct Answer: Oligodontia ✔

Option A: Gives rise to cementoblasts that produce cementum of the root

Option B: Moulds the shape of roots and stimulates differentiation of odontoblasts

Option C: Given rise to odontoblasts that lay down dentin of the root

Option D: Remians as an essential constituents of the periodontal ligament

Correct Answer: Moulds the shape of roots and stimulates differentiation of odontoblasts ✔

Option A: Forebrain

Option B: Rathke’s pouch

Option C: Neural crest cells

Option D: Odontoblasts

Correct Answer: Neural crest cells ✔

Option A: Epithelial diaphragm

Option B: Cell rests of Malassez

Option C: Toot bud division or bell stage

Option D: None of the above

Correct Answer: Epithelial diaphragm ✔

Option A: 6th week IU

Option B: 2nd week IU

Option C: 9th week IU

Option D: 4th week IU

Correct Answer: 6th week IU ✔

Option A: Change in number of teeth

Option B: Ameloblastoma

Option C: Change in form and shape of the teeth

Option D: Hypoplasia

Correct Answer: Change in form and shape of the teeth ✔

Option A: Pulp only

Option B: Pulp & Dentin

Option C: Pulp & Periodontal ligament

Option D: All of the above

Correct Answer: Pulp & Dentin ✔

Option A: Stellate reticulum

Option B: Dental papilla

Option C: Enamel organ

Option D: Dental sac

Correct Answer: Enamel organ ✔