Tooth morphology-3

Questions	Answer
The formation of each centre of cusp formation proceed till they	Coalesce
Signs of demarcation between the formation of each developmental lobe is by the	Developmental groove
Formation of tooth is said to be completed when tooth	Apex is formed
Root formation of deciduous teeth is complete within	36 - 48 months after tooth eruption
The most unstable teeth in the deciduous dentition are the	Second molars and maxillary incisors
The highest peak of caries attack is observed during	13 years
The susceptibility of dental caries is a function of	Exposure time; Oral environment; Morphological type and surface of teeth
The period of exfoliation of deciduous dentition is the	7th – 12th year
The crown of deciduous mandibular first molar resemble the crown of	The crown of deciduous mandibular first molar does not resemble the crown of any teeth – deciduous or permanent dentition
As compared to the permanent dentition, the deciduous anterior teeth have	Prominent cervical ridge; Narrower cervical margin; Flared roots in the posterior teeth
As compared to the permanent teeth the buccolingual diameter of the deciduous teeth is	Less
As compared to the permanent teeth the ratio of crown length to mesiodistal width, the deciduous teeth is	Higher
As compared to permanent dentition, the tooth length to root length of anterior deciduous teeth appear	Narrower and longer
The purpose of flaring in the deciduous molar roots is (are)	To accommodate developing permanent premolars
Crown and root of deciduous molars at the cervical portion are	Slender mesiodistally
As compared to permanent dentition, the cervical ridges in deciduous teeth are	More pronounced
As compared to permanent dentition, the occlusal surface in deciduous teeth are	Narrower
As compared to permanent dentition, the pulp horns and chambers in deciduous teeth are	High and large. Though it is observed in all teeth, it is obvious in mesial pulp horns of all teeth.
The mesiodistal diameter is greater than the cervicoincisal length in	Deciduous maxillary central incisor; Permanent maxillary central incisor; Permanent molars. For the permanent maxillary central incisor the mesiodistal diameter is lesser than the cervicoincisal length.
As compared to permanent maxillary central incisor, the tooth length to root length of anterior deciduous maxillary central incisor have	Increased root length