A. 4 yrs
B. 6 yrs
C. 8 yrs
D. 10 yrs
A. Tight contacts, absence of spacing
B. Shallow overjet and overbite
C. Flush terminal plane
D. Ovoid arch form
A. Mesiobuccal
B. Distobuccal
C. Mesiolingual
D. Distolingual
A. In prism arrangement
B. in mineral content
C. No difference in enamel, difference in dentin
D. None of the above
A. Buccal surfaces of the permanent molars are flatter
B. Cervical ridges are more pronounced in permanent molars
C. Root trunks of decidous teeth are larger compared with their overall root lengths
D. Crowns of decidous incisors are wider mesiodistally than their cervico incisal lengths
A. Permanent central incisors
B. Decidous maxillary central incisors
C. Permanent maxillary canines
D. Permanent mandibular lateral incisors
A. Mesiolingual
B. Distolingual
C. Mesiobuccal
D. Distobuccal
A. Mandibular first molar
B. Maxillary first molar
C. Mandibular second molar
D. Maxillary second molar
A. Thickness of enamel and dentin
B. Pulp chambers are longer
C. Roots are flaring
D. All of the above