Chapter 6 - Primary and Mixed Dentition

which primary teeth have crowns that are wider mesiodistally than they are long inciso- or occluso- cervically?

maxillary central incisor, maxillary first molar, mandibular first molar

which tooth is adjacent and distal to the primary maxillary second molar in a 7 year old?

permanent maxillary first molar

how many teeth should be present in the mouth of a 3 year old?

20

how many teeth should be present in the mouth of a 13 year old?

28

which primary molar most resembles a permanent maxillary right first molar?

tooth A

what would you estimate to be the dental age of a child with the following teeth: all primary maxillary incisors, canines, and molars, and permanent mandibular central incisors and first molars?

5 to 7 years

which teeth (primary or secondary) have the mesial proximal contact positioned more cervically than the distal proximal contact?

mandibular first premolar, primary maxillary canine

which teeth (secondary or primary) have the mesial cusp ridge of the facial cusp longer than the distal cusp ridge of the facial cusp?

maxillary first premolar and primary maxillary canine

which succedaneous tooth erupts beneath tooth J?

#13

which traits can be used to differentiate primary teeth from secondary teeth?

primary teeth have greater facial cervical bulges; primary teeth have relatively thinner and longer roots; primary teeth are whiter; primary teeth have relatively large pulps

which permanent teeth would you expect to be erupted in the average 9 to 10 year old?

maxillary lateral incisor, maxillary central incisor, mandibular canine

which traits apply to a primary mandibular first molar?

it has a prominent buccal cervical bulge; it has a prominent mesial marginal ridge; it has a prominent transverse ridge