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

Abstract

The aim of this study was to evaluate the intrapulpal temperature changes during the curing of different bulk-fill restorative materials. Ten mandibular molar teeth were selected and occlusal surfaces were removed to obtain a standard 0.5 mm occlusal dentin thickness. Five bulk-fill restorative materials and a conventional resin composite (control) were applied. The intrapulpal temperature changes during the curing of these materials were determined by a device simulating pulpal blood microcirculation. The difference between the initial and maximum temperature values (Δt), was recorded. The data were statistically analyzed with one-way ANOVA and Tukey's HSD test (p<0.05). There were statistically significant differences between materials (p<0.001). The light-curing bulkfill restoratives exhibited the highest Δt values. Equia Forte showed the lowest Δt values among all the groups (p<0.05). Bulk-fill restorative materials causes significantly different temperature changes in the pulp chamber according to curing type. Therefore, clinicians should be considered when using these materials.

Effect of preheated bulk‐fill composite temperature on intrapulpal temperature increase in vitro

“…In their study, specimens were prepared with 0.5 mm remaining dentin thickness, and this may have led to a larger temperature change. This is a factor to consider when studying bulk‐fill composites cause pulp damage via intrapulpal temperature increases …”

“…This is a factor to consider when studying bulk-fill composites cause pulp damage via intrapulpal temperature increases. 26 El pulp temperature is between 34 C and 35 C, 14,15 with the blood stream playing a balancing role in maintaining this temperature. In the present study, a 37 C basin was used instead of an in vivo model representing physiological temperature.…”

Temperature changes in the pulp chamber induced by polymerization of resin-based dental restoratives following simulated direct pulp capping

“…Class I cavities in the present study allowed a more clinically relevant heat transfer by the surrounding enamel and dentin instead of disk-shaped specimens used in previous studies [16,17,21]. A thermocouple placed at the microperforation site in contact with the capping material and surrounding dentin corresponds to the position of the pulpal wound in a clinical situation with the perforated pulp.…”

“…In vitro studies of the temperature rise in the pulp chamber during restorative procedures pointed to the contributing factors such as the remaining dentin thickness [11][12][13], type of the restorative material [11,[13][14][15][16][17], type of LCU [16,18,19], curing times [19,20] and distances [21]. It was also reported that an experimental setup involving simulated microcirculation in the pulp chamber resulted in a lower temperature rise [12,15].…”

Farklı Bulk-Fill Kompozitlerin Bir Bioaktif Dentin Substratına Makaslama Bağlanma Dayanımlarının Karşılaştırılması

“…12 In nanocomposites, when the thickness of the resin composite material placed in the cavity exceeds 2 mm, reported in studies that it adversely affects the polymerization, and so the physical properties and the clinical life span of the restoration. [13][14][15][16] For this reason, BFC materials have been developed recently in order to apply composites to cavity in large quantities, and to reduce the application time. 17 These BFCs have advantages of lower viscosity than conventional resin composites, and less polymerization shrinkage than flowable composites.…”