Guest Editorial

Tooth agenesis is the congenital lack of one or more of the deciduous or permanent teeth. Oligodontia is the agenesis of six or more permanent teeth (excluding third molars), whereas absence of less than six teeth is referred to as hypodontia. Anodontia refers to the absence of all deciduous and permanent teeth. Tooth agenesis occurs more frequently among a few molars), with 10 % to 25 % of the population affected. Familial tooth agenesis is transmitted as an autosomal-dominant, autosomal-recessive, or X-linked condition, but can also show no clear segregation pattern5. Affected with regard to the location, symmetry, and number of teeth involved. Residual teeth can vary in size, shape, or rate of development. The permanent dentition is more affected than the primary dentition3