A. 2 years
B. 4 years
C. 6 years
D. 8 years

(A) Before lateral incisor
(B) Before first molar
(C) After first molar
(D) After second molar

(A) 1-6-2-3-4-7-5-8
(B) 2-3-1-6-7-5-4-8
(C) 6-1-2-4-3-5-7-8
(D) 6-1-2-3-4-5-7-8

(A) Permanent central incisors
(B) Decidous maxillary central incisors
(C) Permanent maxillary canines
(D) Permanent mandibular lateral incisors

(A) Buccal surfaces of the permanent molars are flatter
(B) Cervical ridges are more pronounced in permanent molars
(C) Root trunks of deciduous teeth are larger compared with their overall root lengths
(D) Crowns of decidous incisors are wider mesiodistally than their cervico incisal lengths

(A) In prism arrangement
(B) in mineral content
(C) No difference in enamel, difference in dentin
(D) None of the above

(A) Mesiobuccal
(B) Distobuccal
(C) Mesiolingual
(D) Distolingual

(A) Tight contacts, absence of spacing
(B) Shallow overjet and overbite
(C) Flush terminal plane
(D) Ovoid arch form

(A) 4 yrs
(B) 6 yrs
(C) 8 yrs
(D) 10 yrs

(A) External and internal oblique
(B) External oblique and transversus abdominis
(C) Internal oblique and transversus abdominis
(D) Internal oblique