Thermal irritation of teeth during dental treatment procedures

Abstract

While it is reasonably well known that certain dental procedures increase the temperature of the tooth's surface, of greater interest is their potential damaging effect on the pulp and tooth-supporting tissues. Previous studies have investigated the responses of the pulp, periodontal ligament, and alveolar bone to thermal irritation and the temperature at which thermal damage is initiated. There are also many in vitro studies that have measured the temperature increase of the pulp and tooth-supporting tissues during restorative and endodontic procedures. This review article provides an overview of studies measuring temperature increases in tooth structures during several restorative and endodontic procedures, and proposes clinical guidelines for reducing potential thermal hazards to the pulp and supporting tissues.

Intrapulpal temperature changes during curing of different bulk-fill restorative materials

“…The temperature rise that occurs during the restorative process may be detrimental for the pulpal tissues 19,20) . In deep cavities, regardless of the composite resin used, the risk of pulpal damage increases because of the temperature changes induced by the light-curing unit 18,33) .…”

“…The polymerization process of light-curing materials results in a temperature increase caused by the exothermic reaction of the material and the energy absorbed by the tooth during the irradiation 18) . The temperature increase during polymerization can result in both reversible and irreversible pulpal inflammation or even necrosis 19,20) . During this period, several factors can affect the thermal changes in the pulpal tissue.…”

Light curing in dentistry and clinical implications: a literature review

“…88,89,90 Over decades, several studies have investigated the heat on the in vitro temperature within the pulp chamber caused by cavity preparation with slow and high speed handpieces, 91,92 by restorative materials with exothermic setting, restoration finishing and polishing, as well as by the light emitted from light curing. 93,94,95,96,97,98,99,100 Recently, because new LED light-curing units with radiant exitance values exceeding 2,000 mW/cm 2 have become commercially available, the heat generated from these devices has become an important clinical issue.…”

Aumento de longevidad de restauraciones de resinas compuestas y de su unión adhesiva. Revisión de tema

“…127 Lo cierto es que la evaporación de los solventes continua siendo un problema no resuelto, dado que los tiempos de evaporación recomendados por los fabricantes, en los adhesivos que utilizan acetona o etanol retienen entre el 5% al 10% después de haber sido soplados durante 120 s 122 , periodo más de 10 veces mayor que el recomendado, pero cuando el solvente es mezclado con 30% de agua puede retener hasta el 41%. 122 Desde el punto de vista de la biología pulpar es conocido que varios factores afectan el incremento de temperatura de la pulpa, como por ejemplo, el espesor de la dentina residual, dado que la dentina presenta baja conductividad térmica y actúa como protector frente a la acción térmi-ca, 132 sin embargo no existen estudios que demuestren la inocuidad de esta metodología, la que al menos será discutida como desfavorable por los estudios histológi-cos en piezas vitales y podría sugerirse su estudio en piezas tratadas endodónticamente.…”