Abstract
The presence of the dentino-enamel cuticle prior to dentinogenesis and amelogenesis is generally recognized. Whether this cuticle persists in adult teeth after maturation is not yet definitely answered. Decalcified sections of 2 adult human teeth showing a recovered enamel matrix and a membranous structure which is interpreted as the dentino-enamel cuticle are presented in the report. It is also shown that the cuticle appears to be resistant to caries action. The undermining caries, in the specimen presented, progresses between the dentino-enamel cuticle and the enamel matrix at the sacrifice of the latter.
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