Shahnavazi Maryam, Salari Behzad, Fekrazad Reza
Department of Oral and Maxillofacial Radiology, School of Dentistry, Aja University of Medical Sciences, Tehran 3413941661, Iran.
Department of Orthodontics, School of Dentistry, Aja University of Medical Sciences, Tehran 3413941661, Iran.
Healthcare (Basel). 2021 Jun 19;9(6):768. doi: 10.3390/healthcare9060768.
Persistent pressure change is a common phenomenon within scuba diving with various medical and dental sign side effects. This study evaluates the effect of simulated pressure change due to scuba diving on the microleakage of class II composite restoration. In our methodology, a total number of 150 intact bicuspids are divided into two main groups (A and B), and prepared for a class II composite restoration. The samples of each main group are divided into five subgroups to be prepared with different liners. Then samples are restored with the same resin composite material. The teeth in group A are thermocycled under the normal atmospheric pressure, while group B are thermocycled under simulated scuba diving conditions. The gingival microleakage is assessed based on dye penetration. The group B teeth show a significantly higher microleakage score than their equivalents in group A ( < 0.05). The subgroups without a liner have a higher microleakage score than the other subgroups ( < 0.05). The flowable composite shows the leased leakage scores followed by Nano ionomer, Resin Modified Glass Iononomer, GIOMER, and linerless groups ( < 0.05). Scuba diving could increase the risk of microleakage development beneath class II, a composite restoration.
持续的压力变化是水肺潜水中的常见现象，会产生各种医学和牙科方面的副作用。本研究评估了水肺潜水引起的模拟压力变化对II类复合树脂修复体微渗漏的影响。在我们的方法中，总共150颗完整的双尖牙被分为两个主要组（A组和B组），并准备进行II类复合树脂修复。每个主要组的样本再分为五个亚组，用不同的衬层进行处理。然后用相同的树脂复合材料对样本进行修复。A组的牙齿在正常大气压下进行热循环，而B组在模拟水肺潜水条件下进行热循环。根据染料渗透情况评估牙龈微渗漏。B组牙齿的微渗漏评分明显高于A组中的对应牙齿（<0.05）。没有衬层的亚组的微渗漏评分高于其他亚组（<0.05）。流动复合树脂显示出最低的渗漏评分，其次是纳米离子体、树脂改性玻璃离子体、GIOMER和无衬层组（<0.05）。水肺潜水可能会增加II类复合树脂修复体下方发生微渗漏的风险。
