In vitro exploratory study on the impact of the pressure changes on the temporary coronal filling performed between sessions of endodontic treatment - ROS - 2016 - Tome 45 - N°4

Objective.
The objective of our study is to determine if the pressure changes generated by the practice of scuba diving can cause the fracture of teeth temporarily filled between two sessions of an endodontic treatment and if the filling material and the obturation techniques have an impact on the risk of dental fracture.
Method.
60 extracted maxillary molars with various types of temporary filling were exposed in a hyperbaric chamber to 12 cycles of pressure changes (from 1 to 2 ATA).
Results.
The gas pressure in the cavity created by the placement of a cotton ball under the temporary obturation cannot balance with the pressure of the oral cavity. The pressure gradient thus created can generate in vitro a dental fracture whatever the type of filling material.
Conclusion.
Considering the results of our exploratory study, it could be recommended, when a patient must dive between the sessions of an endodontic treatment, either not to place a cotton ball in the pulp chamber, or to put cotton only in the root canal orifices. Besides, the choice of the coronal filling material does not seem to have any impact on the potential occurrence of dental fractures.

Agenda