Observations on fluid flow from exposed dentine in primary teeth: An in vitro study.

Objective: To investigate fluid flow through dentine in primary teeth in vitro using the replica technique, and to compare the results with those obtained from permanent dentine.

Design: The experiments were carried out on 22 extracted, mandibular, primary, incisor teeth. The incisal edge was removed to 1mm below the dentino-enamel junction and half the exposed surface etched with phosphoric acid.