Department of Restorative Dentistry and Periodontology, University of Pécs Medical School, Dischka Gy. Street 5, Pécs, 7621, Hungary.
Department of Oral and Maxillofacial Surgery, University of Pécs Medical School, Dischka Gy. Street 5, Pécs, 7621, Hungary.
Sci Rep. 2022 Jul 28;12(1):12919. doi: 10.1038/s41598-022-17285-x.
Adhesive cementation of ceramic veneers may increase pulpal temperature (PT) due to the combined effect of heat generated by the curing unit and the exothermic reaction of the luting agent (LA). PT increase may induce pulpal damage. The aim was to determine the PT rise during the luting of ceramic veneers (CV) of different thicknesses with light- or dual-curing (LC, DC) adhesive cements as well as pre-heated restorative resin-based composites (PH-RBC). For this a thermocouple sensor was positioned in the pulp chamber of a prepared maxillary central incisor. LC, DC adhesive cements and PH-RBCs heated to 55 °C were used for the luting of CVs of 0.3, 0.5, 0.7, and 1.0 mm thicknesses. The exothermic reaction of LAs added significantly to the thermal effect of the curing unit. PT change ranged between 8.12 and 14.4 °C with the investigated combinations of LAs and ceramic thicknesses (p ≤ 0.01). The increase was inversely proportional to the increasing CV thicknesses. The highest rise (p ≤ 0.01) was seen with the polymerization of PH-RBCs. Temperature changes were predominantly influenced by the composition of the LA, which was followed by CV thickness.
陶瓷贴面的黏结剂可能会由于固化单元产生的热量和黏结剂的放热反应的共同作用而增加牙髓温度（PT）。PT 的升高可能会导致牙髓损伤。本研究旨在确定使用不同厚度的光固化或双重固化（LC、DC）黏结剂黏结陶瓷贴面（CV）以及预热的树脂基修复复合材料（PH-RBC）时，PT 的升高情况。为此，将热电偶传感器放置在上颌中切牙预备好的牙髓腔内。使用加热至 55°C 的 LC、DC 黏结剂和 PH-RBC 来黏结厚度分别为 0.3、0.5、0.7 和 1.0mm 的 CV。黏结剂的放热反应显著增加了固化单元的热效应。PT 变化范围为 8.12 至 14.4°C，与研究的黏结剂和陶瓷厚度组合有关（p≤0.01）。增加量与 CV 厚度的增加呈反比。聚合 PH-RBC 时的上升幅度最大（p≤0.01）。温度变化主要受 LA 的组成影响，其次是 CV 厚度。
