三种酸蚀方法及两种封闭材料对窝沟封闭的边缘微渗漏影响

发布时间：2018-05-04 11:20

本文选题：窝沟封闭 + 微渗漏　；参考：《河北医科大学》2015年硕士论文

【摘要】：目的:本研究旨在观察使用窝沟封闭剂及3M纳米复合流体树脂进行窝沟封闭时,不同的酸蚀方法对边缘微渗漏的影响。方法:1应用窝沟封闭技术将正畸减数拔牙的新鲜拔除的48颗上颌双尖牙,每组8颗,随机分为六组,即:第1组:35%Gluma磷酸酸蚀剂+3M窝沟封闭剂组;第2组:35%Gluma磷酸酸蚀剂+3M纳米复合流体树脂组;第3组:S3BONDTM第七代自酸蚀粘结剂+3M窝沟封闭剂组;第4组:S3BONDTM第七代自酸蚀粘结剂+3M纳米复合流体树脂组;第5组:15%Hcl凝胶+3M窝沟封闭剂组;第6组:15%Hcl凝胶+3M纳米复合流体树脂组。并将六组标本行窝沟封闭术。2应用热循环处理六组标本,六组标本均置于37℃恒温水浴中24h,再将标本分别浸入5℃、55℃水浴中进行500次的循环周期,每个温度停留30s。3各组随机选取的6个标本应用亚甲蓝染色法,用体视显微镜分别观察六组标本的微渗漏情况。4各组余下的2个标本用扫描电镜分别观察六组标本的边缘密闭性。结果:1微渗漏情况1.1使用窝沟封闭剂的标本中,各组微渗漏情况:1组低于3组,5组低于3组,其差异均有统计学意义(P0.05);5组低于1组,但两组间无统计学差异(P0.05)。1.2使用流体树脂的标本中,各组微渗漏情况:6组低于2组,2组低于4组,其差异均有统计学差异(P0.05)。1.3使用35%磷酸Gluma磷酸凝胶酸蚀后,1、2组间微渗漏情况相近,无统计学差异(P0.05);使用S3BONDTM第七代自酸蚀粘结剂酸蚀后,3组低于4组,其差异有统计学差异(P0.05);使用15%Hcl凝胶酸蚀后,6组低于5组,其差异有统计学差异(P0.05)。1.4使用不同酸蚀方法和不同封闭材料的标本间交叉比较,各组微渗漏情况:1组低于4组,6组低于1组,2组低于3组,5组低于2组,6组低于3组,5组低于4组,其差异均有统计学差异(P0.05)。2扫描电镜观察2.1低倍镜下(×40)观察标本全貌:1组窝沟封闭剂有少量微空泡,完全渗入到了窝沟底部,与牙釉质之间的结合面连续有裂纹。高倍镜下(×1000)观察测量结果:1组窝沟封闭剂与牙釉质之间结合面微缝隙宽度约为6.25~15μm。2.2低倍镜下(×40)观察标本全貌:2组流体树脂不甚均匀,完全渗入到了窝沟底部,与牙釉质之间的结合面连续无裂纹,接近沟底部有一裂纹,窝沟封闭剂与牙釉质完全结合在一起。高倍镜下(×1000)观察测量结果:2组流体树脂与牙釉质之间结合面微缝隙宽度约为3.15~20.25μm。2.3低倍镜下(×40)观察标本全貌:3组窝沟封闭剂在完全渗入到了窝沟底部,与牙釉质之间的结合面连续有裂纹。高倍镜下(×1000)观察测量结果:3组窝沟封闭剂与牙釉质之间结合面微缝隙宽度约为2.1~20.25μm。2.4低倍镜下(×40)观察标本全貌:4组流体树脂均匀、完整、无空泡,未渗入到了窝沟底部,与牙釉质之间的结合面有一连续裂沟。高倍镜下(×1000)观察测量结果:4组流体树脂与牙釉质之间结合面微缝隙宽度约为12.5~75μm。2.5低倍镜下(×40)观察标本全貌:5窝沟封闭剂均匀、完整、无空泡,完全渗入到了窝沟底部,与牙釉质之间的结合面有少量细小裂纹。高倍镜下(×1000)观察测量结果:5组窝沟封闭剂与牙釉质之间结合面微缝隙宽度约为2.1~4.5μm。2.6低倍镜下(×40)观察标本全貌:6组流体树脂均匀、完整,与牙釉质之间的结合面连续无裂纹,窝沟封闭剂与牙釉质完全结合在一起。高倍镜下(×1000)观察测量结果:6组流体树脂与牙釉质之间结合面微缝隙宽度约为0.25~4.5μm。结论:1 15%盐酸凝胶预处理后,3M纳米复合流体树脂行窝沟封闭的边缘微渗漏最小。2 S3BONDTM第七代自酸蚀粘结剂预处理后,3M纳米复合流体树脂行窝沟封闭边缘微渗漏情况最显著。
[Abstract]:Objective: the purpose of this study was to observe the effect of different etching methods on marginal microleakage when using fissure sealants and 3M nanocomposite fluid resin for pit and fissure sealing. 1 the 48 maxillary canines extracted by orthodontic extraction were divided into six groups randomly, that is, the first group: the first group: 35%Gluma phosphoric acid. Acid etching agent +3M pit sealant group; second group: 35%Gluma phosphate acid etching agent +3M nanocomposite fluid resin group; third groups: S3BONDTM seventh generation self etching binder +3M pit sealant group; fourth group: S3BONDTM seventh generation self etching binder +3M nanocomposite fluid resin group; fifth group: 15%Hcl gel +3M pit sealant group; sixth group: 15%Hcl gel +3M. The six groups of specimens were treated with six groups of six groups of specimens. The six groups were placed at 37 C in constant temperature water bath for 24h, and then the specimens were immersed in 5 centigrade and 500 cycles in 55 centigrade water bath, and 6 specimens randomly selected at each temperature 30s.3 were used with methylene blue staining method. The microleakage of the six groups of the six groups was observed by the stereograph. The remaining 2 specimens of each group were examined by scanning electron microscope to observe the marginal tightness of the six groups. Results: in the 1 microleakage cases, the microleakage of the 1 groups was lower than the 3 groups in the 1 groups and the 5 groups were lower than the 3 groups, and the difference was statistically significant (P0.05); 5 groups were low. In the 1 group, but there was no statistical difference between the two groups (P0.05).1.2 using fluid resin specimens, microleakage in each group: 6 groups were lower than 2 groups, 2 groups were lower than 4 groups, the difference was statistically significant (P0.05).1.3 using 35% phosphoric acid Gluma gel acid etching, 1,2 group microleakage was similar, no statistical difference (P0.05); S3BONDTM seventh generation self. After acid etching, the 3 groups were less than 4 groups, and the difference was statistically different (P0.05). After the use of 15%Hcl gel etching, the 6 groups were lower than 5 groups, and the difference was statistically different (P0.05).1.4 using different etching methods and different sealing materials intersecting comparison, the 1 groups were lower than 4 groups, 6 groups were lower than 1 groups, 2 groups were lower 3, 5 group. Lower than 2 groups, 6 groups were lower than 3 groups, 5 groups were lower than 4 groups, the difference was statistically significant (P0.05).2 scanning electron microscope observation under 2.1 low magnification (x 40) observation specimen full picture: 1 group of fissure sealants with a small number of microbubbles, completely infiltrated into the bottom of the pit, and the joint surface between the enamel and continuous crack. High magnification (x 1000) observation results: 1 sets of fossa The width of the junction surface between the trench sealant and the enamel was about 6.25~15 mu m.2.2 low magnification (x 40) to observe the whole appearance of the specimen: the 2 groups of fluid resins were not very homogeneous, completely infiltrated into the bottom of the pit, and the surface of the enamel was continuous without cracks, close to the bottom of the ditch, and the fissure sealant was completely combined with the enamel. Observation results under double microscope (x 1000): the width of the joint surface between the 2 groups of fluid resin and tooth enamel was about 3.15~20.25 mu m.2.3 low magnification (x 40) to observe the whole appearance of the specimen: 3 groups of fissure sealants were completely infiltrated into the bottom of the pit and groove, and the surface of the enamel was connected to the crack. The measurement results were observed under the high magnification (x 1000): 3 sets of fossa The width of the gap between the trench sealant and the enamel was about 2.1~20.25 mu m.2.4 low magnification (x 40). The 4 groups of fluid resins were homogeneous, complete, no vacuoles, did not infiltrate into the bottom of the fossa, and there was a continuous fissure between the enamel and the enamel. The results were observed by high magnification (x 1000): 4 groups of fluid resin and enamel The width of the joint surface micro gap was about 12.5~75 mu m.2.5 low magnification mirror (x 40) to observe the whole appearance of the specimen: 5 fissure sealant was uniform, complete, without vacuoles, completely infiltrated into the bottom of the pit, and there was a small amount of fine cracks in the surface of the enamel. The results were observed under high magnification (x 1000): the binding surface between the 5 groups of fissure sealants and the enamel The width of the gap was about 2.1~4.5 mu m.2.6 low magnification (x 40) to observe the whole specimen appearance: the 6 groups of fluid resin were uniform and complete, and the bonding surface between the enamel and the enamel was continuous without cracks. The fissure sealant was completely combined with the enamel. The measurement results were observed under high magnification (x 1000): the width of the micro gap between the 6 fluid resin and the enamel was about 0.. 25~4.5 micron M. conclusion: after pretreatment of 115% hydrochloric hydrochloric gel, 3M nano composite fluid resin is pretreated with pit and ditch closed marginal microleakage minimum.2 S3BONDTM seventh generation self etching binder, and the microleakage of 3M nanocomposite fluid resin on the margin of pit and groove closed edge is the most significant.

【学位授予单位】：河北医科大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：R783

【共引文献】