Tooth Morphology-1

ANSWERS FOR YESTERDAYS QUESTIONS

Questions	Answer
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 stage.
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 with	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 premolars.
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 of	Pulp canal and chamber
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	Cusp
An elevation on some portion of crown produced by abnormal enamel deposition is the	Tubercle
The lingual lobe of anterior teeth are represented as	Cingulum
A linear elevation on any surface of tooth is a	Ridge
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	Two
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 the	Oblique ridge
A irregular depression on any surface of the crown is a	Fossa