SDR流动树脂根管口封闭能力的比较研究
发布时间：2019-06-14 18:51
【摘要】：目的:采用染料微渗漏的方法评价SDR流动树脂对根管口的封闭能力。方法:54颗近期拔除的下颌单根前磨牙于釉牙本质界处去除牙冠,根管经清理、成形和充填后,在根管口处制备3.5mm的窝洞,根据所采用的粘结系统和充填材料不同将54个牙根随机分为6个组,4个实验组和2个对照组。实验组分别为:(1)XT组:Filtek?Z350 XT流动树脂+AdperTMEasy One;(2)SX组:SDR流动树脂+Xeno?V+;(3)SP组:SDR流动树脂+37%磷酸酸蚀剂+PrimeBond?NT;(4)GC组:单独玻璃离子充填,每组12个牙根。指甲油封闭距离根管口洞缘1mm以外的牙体组织。对照组样本均采用热牙胶充填根管口窝洞,阴性对照组(N组)采用指甲油封闭牙胶以及洞缘外的所有牙体组织;阳性对照组(P组)则封闭距离洞缘1mm以外的牙体组织。所有样本于37?C培育箱中放置1周,经冷热循环500次后置入1%亚甲基蓝染液中染色1周。干燥后沿牙体长轴颊舌向劈开,体式显微镜下评估样本染料渗透指数。结果:SX组微渗漏值明显小于其他实验组(P0.05),而GC组的根管口封闭能力明显低于其他实验组(P0.05),并与阳性对照组(P组)无统计学差异(P0.05)。SDR流动树脂采用不同的粘结系统进行充填时,SDR流动树脂与自酸蚀粘结系统Xeno?V+联合使用时,其封闭能力高于与全酸粘接剂PrimeBond?NT联合运用(P0.05)。结论:玻璃离子不适宜作为根管口微渗漏屏障,而SDR流动树脂和Xeno?V?结合使用时可以作为理想根管口封闭材料。
[Abstract]:Objective: to evaluate the sealing ability of SDR flow resin to root canal orifice by dye microleakage. Methods: 54 mandibular single premolars were removed at the boundary of glaze dentin. After cleaning, forming and filling, the 3.5mm cavities were prepared at the root canal orifice. According to the bonding system and filling materials, 54 teeth were randomly divided into 6 groups, 4 experimental groups and 2 control groups. The experimental groups were as follows: (1) XT group: Filtek?Z350 XT mobile resin AdperTMEasy One; (2) SX group: SDR mobile resin Xeno?V; (3) SP group: SDR mobile resin 37% phosphate corrosion agent PrimeBond?NT; (4) GC group: glass ion filling alone, 12 roots in each group. Nail polish blocks tooth tissue other than 1mm at the edge of root canal orifice. The control group was filled with hot gum, the negative control group (group N) was treated with nail polish to seal the gum and all dental tissues outside the edge of the cave, while the positive control group (group P) closed the dental tissue outside the edge of the cave 1mm. All samples were placed in 37 / C incubator for 1 week and stained in 1% methylene blue dye solution after 500 cycles of cold and hot circulation. After drying, the buccal tongue was split along the long axis of the tooth body, and the dye permeability index of the sample was evaluated under the microscope. Results: the microleakage value of SX group was significantly lower than that of other experimental groups (P 0.05), while the sealing ability of root canal orifice of GC group was significantly lower than that of other experimental groups (P group), and there was no significant difference between SDR group and positive control group (P group). When SDR flow resin was filled with different bonding system, SDR flow resin was used in combination with self-corrosion bonding system SDR. Its sealing ability was higher than that of PrimeBond?NT (P 0.05). Conclusion: glass ionomer is not suitable for microleakage barrier at root canal orifice, but SDR flow resin and Xeno?V? are not suitable for microleakage barrier. When combined with each other, it can be used as an ideal sealing material for root canal orifice.
【学位授予单位】：广西医科大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：R781.05
[Abstract]:Objective: to evaluate the sealing ability of SDR flow resin to root canal orifice by dye microleakage. Methods: 54 mandibular single premolars were removed at the boundary of glaze dentin. After cleaning, forming and filling, the 3.5mm cavities were prepared at the root canal orifice. According to the bonding system and filling materials, 54 teeth were randomly divided into 6 groups, 4 experimental groups and 2 control groups. The experimental groups were as follows: (1) XT group: Filtek?Z350 XT mobile resin AdperTMEasy One; (2) SX group: SDR mobile resin Xeno?V; (3) SP group: SDR mobile resin 37% phosphate corrosion agent PrimeBond?NT; (4) GC group: glass ion filling alone, 12 roots in each group. Nail polish blocks tooth tissue other than 1mm at the edge of root canal orifice. The control group was filled with hot gum, the negative control group (group N) was treated with nail polish to seal the gum and all dental tissues outside the edge of the cave, while the positive control group (group P) closed the dental tissue outside the edge of the cave 1mm. All samples were placed in 37 / C incubator for 1 week and stained in 1% methylene blue dye solution after 500 cycles of cold and hot circulation. After drying, the buccal tongue was split along the long axis of the tooth body, and the dye permeability index of the sample was evaluated under the microscope. Results: the microleakage value of SX group was significantly lower than that of other experimental groups (P 0.05), while the sealing ability of root canal orifice of GC group was significantly lower than that of other experimental groups (P group), and there was no significant difference between SDR group and positive control group (P group). When SDR flow resin was filled with different bonding system, SDR flow resin was used in combination with self-corrosion bonding system SDR. Its sealing ability was higher than that of PrimeBond?NT (P 0.05). Conclusion: glass ionomer is not suitable for microleakage barrier at root canal orifice, but SDR flow resin and Xeno?V? are not suitable for microleakage barrier. When combined with each other, it can be used as an ideal sealing material for root canal orifice.
【学位授予单位】：广西医科大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：R781.05
【参考文献】
相关期刊论文 前10条
1 李智;许永伟;高承志;;整层充填流动树脂充填深楔状缺损的随机对照临床研究[J];实用口腔医学杂志;2015年06期
2 Ling-jia Kong;Kuo Wan;Deng-gao Liu;;Double Roots of Mandibular Premolar in Full-mouth Periapical Films[J];Chinese Medical Sciences Journal;2015年03期
3 贾占涛;董世涛;;扫描电镜下三种流动树脂充填体边缘微渗漏研究[J];临床和实验医学杂志;2015年06期
4 刘艳;陈晖;;光固化和双重固化玻璃离子水门汀修复牙体的效果比较[J];中国组织工程研究;2013年21期
5 楚小玉;谢窈;孙志辉;刘峰;王世明;;无机填料含量对流动树脂挠曲强度和压缩强度影响体外研究[J];中国实用口腔科杂志;2013年05期
6 白雪;伊哲;姜志清;;不同厚度材料封闭冠方根管的微渗漏对比研究[J];口腔颌面修复学杂志;2013年01期
7 卢群;杨静;;玻璃离子与流动树脂用于根面龋充填治疗效果比较[J];实用医院临床杂志;2013年01期
8 韦曦;何庆银;凌均h，
本文编号：2499602
本文链接：https://www.wllwen.com/yixuelunwen/kouq/2499602.html
最近更新
教材专著
