| 刘婷婷,吴佩玲,李娜,南骏翔,魏琰.两种光固化模式对窝沟封闭材料封闭效果的影响[J].口腔材料器械杂志,2021,30(4):208-213. |
| 两种光固化模式对窝沟封闭材料封闭效果的影响 |
| Experimental study on the effects of two light curing modes on sealiny ability of pit and fissure sealant |
| 投稿时间：2020-09-11 修订日期：2021-01-08 |
| DOI：10.11752/j.kqcl.2021.04.03 |
| 中文关键词: 窝沟封闭 光固化模式 操作时间 微渗漏 |
| 英文关键词:Pit and fissure sealant Light curing mode Operating time Microleakage |
| 基金项目:新疆维吾尔自治区自然科学基金资助项目（编号：2019D01A20） |
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| 中文摘要: |
| 目的 分别在光固化灯（VALO® Cordless）超高功率和常规功率两种固化模式下研究窝沟封闭材料的封闭效果，比较微渗漏程度和操作时间的差异，为临床提供参考。方法 收集符合纳入标准的青少年磨牙及前磨牙，共计80颗，窝沟封闭剂分别是：A组和B组采用自酸蚀粘接剂（3M ESPE Single Bond Universal）与流动树脂（3M ESPE FiltekTM Z350 XT）联合应用，C组和D组采用自酸蚀自粘接流体树脂（DMG-Constic），固化模式分别为A组和C组采取常规光固化；B组和D组采取超能量光固化。所有标本在0.1%罗丹明B荧光染液中浸泡24 h后进行编号、切割，在激光共聚焦显微镜镜下观察4组试样的封闭剂与牙釉质本质界之间的渗漏程度，记录微渗漏值进行统计学分析。结果 （1）4组试样的微渗漏深度值分别为：A组（375.08±32.4）μm，B组（340.04±35.99）μm，C组（306.71±13.56）μm，D组（265.27±24.69）μm；（2）A组、C组、D组的操作时间大于B组，在相同光固化模式及相同粘接技术条件下，各组之间的操作时间的差异有统计学意义（P<0.05），不同光固化模式和不同树脂在操作时间上有交互作用；A组、B组、C组的微渗漏值大于D组，且在相同光固化模式及相同粘接技术条件下，各组之间的微渗漏值存在差异（P<0.05），不同光固化模式和不同树脂在微渗漏程度上没有交互作用。结论 在超能量光固化模式下，虽然使用自酸蚀粘接剂联合流动树脂进行窝沟封闭使用的时间最少，但使用自酸蚀自粘接流体树脂进行操作能有效地减小微渗漏，提高治疗效果，值得临床推广应用。 |
| 英文摘要: |
| Objective The sealing effect of pit and groove sealing materials was respectively observed under two curing modes of ultra-high power and conventional power in light curable lamps (VALO® Cordless), and the difference of microleakage degree and operation time was compared to provide reference for clinical practice. Methods A total of 80 adolescent molars and premolars were collected and randomly divided into four groups by Excel software, Self-etching adhesive and flowing resin were used as pit and fissure sealant in group A and group B, self-etching self-bonding fluid resin was used as pit and fissure sealant in group C and group D, Group A and group C were photo-cured under conventional photo-curing mode. Group B and group D were photo-cured under super-energy photo-curing mode.All specimens were soaked in 0.1% Rhodamine B fluorescent dye solution for 24 h. Use a cutting machine to cut the sample number along the buccal tongue direction along the corresponding positions of the near midpoint gap of the central groove, the midpoint of the connecting line between the near midpoint gap and the far midpoint gap. Four groups of specimens were detected by laser confocal microscope. By detecting the leakage degree between sealant and enamel essence boundary of four groups of samples A, B, C and D, the microleakage value of samples was recorded as experimental data, and the experimental data were statistically analyzed by SPSS 19.0 software. All statistical tests are carried out by two-sided tests, and if the P value is less than or equal to 0.05, it will be considered that the differences tested are statistically significant. Results 1) The microleakage depth of four groups of samples is 375.08±32.4 μm in Group A, 340.04±35.99 μm in Group B, 306.71±13.56 μm in Group C and 265.27±24.69 μm in Group D; 2) The operation time of group B is shorter than that of group A, C and D, and the difference among groups is statistically significant (P<0.05). The microleakage value of group D is less than that of group A, B and C, and the microleakage values of group A and Care significantly different from those of group B and D, (P<0.05), different photocuring modes and different resins have no impact on microleakage degree. Conclusion Although it takes the least time to use self-etching adhesive and flowing resin for pit and fissure sealing in super-energy light-curing mode, using self-etching self-bonding fluid resin for operation in super-energy light-curing mode can effectively reduce microleakage and improve treatment effect, which is worthy of clinical application. |
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