The postnatal period
of development of deciduous dentition spans about
30 months. The second
molars erupt at about 24 to 26 months and root formation completes at least 6
months later.
The primary dentition
remains intact till the child is
6 years. The deciduous
mandibular incisors shed usually after the first molars emerge in to the oral
cavity and is usually about 6 years of age. Moreover, once the 6-year molar
erupts in to oral cavity the dentition is transformed to the mixed dentition
The period of mixed
dentition lasts from
6 to 13 years. The
mixed dentition stage is initiated once the permanent first molar erupts (6
years) to the shedding of deciduous mandibular second molar (12 to 13 years).
Mixed dentition begins
Eruption of permanent
first molars. Eruption of permanent first molars is the first occurring event
in the oral cavity and usually simultaneous with the resorption/ shedding of
deciduous mandibular incisors.
The teeth that replace
exfoliated deciduous teeth are the
Succedaneous teeth.
The Succedaneous teeth are maxillary and mandibular incisors, canine and
The teeth that do not
have predecessor teeth are
The correct answer is
the maxillary and mandibular molars
Pulp chamber is the
space occupied by
Pulp in crown. Pulp in
root is the pulp canal
Pulp cavity is made up
Pulp canal and
The bone of tooth
socket is the
Alveolus. Lamina
propria is a radiological image of the periodontal ligament fibers whereas
maxilla and mandible hold the alveolus
The teeth that have
their mesial surfaces in contact is the
Maxillary and
mandibular central incisors
The teeth that has no
distal contact area is the
Deciduous second molar
An elevation on the
crown portion of a tooth on its occlusal surface is the
An elevation on some
portion of crown produced by abnormal enamel deposition is the
The lingual lobe of
anterior teeth are represented as
A linear elevation on
any surface of tooth is a
The ridge that
descends from cuspal tip towards the central part of the occlusal surface in
maxillary molars are the
Triangular ridge.
Marginal ridge runs along the margin of cusp while transverse ridge and
oblique ridge run across the molar tooth
The triangular ridge
resembles a _________side of a triangle
A union of two
triangular ridge is called as the
Transverse ridge
The union of
triangular ridge of distobuccal cusp and distal ridge of mesiolingual cusp is
Oblique ridge
A irregular depression
on any surface of the crown is a


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