Relationship of Enamel Defects of Permanent Teeth to Retention of Deciduous Tooth Fragments.

The article discusses the relationship the enamel defects of permanent teeth to the retention of deciduous tooth fragments. A study was conducted using 174 boys and 168 girls from families suspected of inbreeding in Nagasaki, Japan. Their teeth were tested for enamel defects such as hypoplasia or opacity. Hypoplasia was found in 56% of participants and opacity in 18%.