Bilateral agenesis of permanent mandibular central incisors: report of two cases.

General dentists most commonly encounter one or more congenitally missing teeth on routine oral examination. Hypodontia and oligodontia are the two most commonly encountered genetic disorders. When one or less than six teeth are missing congenitally they are termed hypodontia.

Clinical and orthopantomographic evaluation of mandibular third molar.

Objective: To evaluate sensitivity of orthopentograph (OPG) in assessing the number and morphology of roots of the mandibular third molar.

Materials And Methods: The study population consisted of 100 ILTMs (impacted lower third molars) ranging from 18 to 42 years with equal sex distribution. All the teeth were subsequently extracted, collected and compared with OPG features for position, number, morphology, and relation to mandibular canal.