Question 1

Root trunks of deciduous molars are long.

Accepted Answer

While roots of deciduous molars are longer than those of the permanent dentition,the root trunks are shorter.In all deciduous molars,the root trunk bifurcates immediately below the cervix of the tooth.

Question 2

MATCHING
During the mixed dentition,it is often challenging to distinguish deciduous and permanent teeth.While there are many similarities,significant differences exist.Match the descriptive term with its corresponding tooth.
-Buccal

Accepted Answer

Buccal means situated on the cheek or outer surface of the tooth, which is synonymous with facial.

Answer: B
 Mamelons are the rounded protuberances on the incisal or occlusal surface of teeth. Deciduous incisors have mamelons while permanent incisors do not.

Answer: C
 Compared to the crowns of deciduous teeth, the crowns of permanent teeth are longer relative to their roots.

Answer: D
 The mandibular first molar has a distinctive crown morphology that sets it apart from the other teeth. The deciduous second molar greatly resembles the permanent mandibular first molar.

Answer: E
 The maxillary second molar primary tooth is the least similar to any other tooth in the mouth.

Question 3

The largest cusp on the deciduous maxillary second molar is the mesiolingual cusp.

Accepted Answer

The deciduous maxillary second molar has four well-developed cusps plus a very small supplementary fifth cusp of Carabelli (technically classified as a tubercle).The mesiolingual is the largest;the distolingual is the smallest with the exception of the fifth cusp.

Question 4

The crown of a deciduous maxillary first molar is much larger than that of the maxillary second molar;however the roots of the second molar are longer.

Accepted Answer

A deciduous maxillary second molar is much larger than a deciduous first molar in both crown and root formation.

Question 5

MATCHING
During the mixed dentition,it is often challenging to distinguish deciduous and permanent teeth.While there are many similarities,significant differences exist.Match the descriptive term with its corresponding tooth.
-Maxillary first molar

Accepted Answer

The answer of MATCHING
During the mixed dentition,it is often challenging...

Question 6

MATCHING
During the mixed dentition,it is often challenging to distinguish deciduous and permanent teeth.While there are many similarities,significant differences exist.Match the descriptive term with its corresponding tooth.
-Canines

Accepted Answer

Canines, especially in their permanent form, have roots that are significantly longer than their crowns, a characteristic that helps distinguish them from other teeth.

Question 7

Deciduous maxillary molars have a well-developed cusp of Carabelli.

Accepted Answer

While permanent maxillary first molars generally have a well-developed cusp of Carabelli,this structure is poorly developed in the mesial dentition.Generally appearing on the mesiolingual root of both primary molars,it is classified as a tubercle because of its tiny size.

Question 8

Deciduous canines erupt before first molars.

Accepted Answer

The opposite is true.Deciduous first molars erupt between 12 and 19 months.Canines erupt between 16 and 22 months.The second molars,erupting between 21 and 33 months,are the last deciduous teeth to erupt.

Question 9

MATCHING
During the mixed dentition,it is often challenging to distinguish deciduous and permanent teeth.While there are many similarities,significant differences exist.Match the descriptive term with its corresponding tooth.
-Maxillary central incisors

Accepted Answer

Primary maxillary central incisors do not have mamelons, unlike their permanent counterparts.

Question 10

MATCHING
During the mixed dentition,it is often challenging to distinguish deciduous and permanent teeth.While there are many similarities,significant differences exist.Match the descriptive term with its corresponding tooth.
-Primary mandibular second molar

Accepted Answer

The primary mandibular second molar closely resembles the permanent mandibular first molar in terms of its overall shape and the arrangement of its cusps.

Quiz 16: Deciduous Dentition

Root trunks of deciduous molars are long.

MATCHING During the mixed dentition,it is often challenging to distinguish deciduous and permanent teeth.While there are many similarities,significant differences exist.Match the descriptive term with its corresponding tooth. -Buccal

The largest cusp on the deciduous maxillary second molar is the mesiolingual cusp.

The crown of a deciduous maxillary first molar is much larger than that of the maxillary second molar;however the roots of the second molar are longer.

MATCHING During the mixed dentition,it is often challenging to distinguish deciduous and permanent teeth.While there are many similarities,significant differences exist.Match the descriptive term with its corresponding tooth. -Maxillary first molar

MATCHING During the mixed dentition,it is often challenging to distinguish deciduous and permanent teeth.While there are many similarities,significant differences exist.Match the descriptive term with its corresponding tooth. -Canines

Deciduous maxillary molars have a well-developed cusp of Carabelli.

Deciduous canines erupt before first molars.

MATCHING During the mixed dentition,it is often challenging to distinguish deciduous and permanent teeth.While there are many similarities,significant differences exist.Match the descriptive term with its corresponding tooth. -Maxillary central incisors

MATCHING During the mixed dentition,it is often challenging to distinguish deciduous and permanent teeth.While there are many similarities,significant differences exist.Match the descriptive term with its corresponding tooth. -Primary mandibular second molar