Abstract
The present study was so designed as to evaluate the topognostic nature of deciduous teeth in younger children and to compare it with that of permanent teeth. A total 741 deciduous teeth out of 22 boys and 18 girls, with ages ranging from 2.9-5.6 y. The tooth pressing device was specially designed and made, and each deciduous tooth was pressed axially with the pressure of 20 g, then the child was requested with his digit to indicate, which tooth was supposed to perceived pressure.
The following are the results obtained in the study.
1) The topognostic ability of deciduous teeth more mesially located showed a higher valve did than the teeth distally located.
2) Some children falsely indicated the mesially located teeth.
3) The deciduous teeth of lower jaw showed an apparent higher perception topognostically than those of upper law.
4) The deciduous teeth in children were more poorly perceived when compared with the permanent teeth in the adults.
