Influence of acidic monomer on polymerization of dual-curing resin cements

酸性单体对双固化树脂水门汀聚合的影响

基本信息

批准号：
18592150
负责人：
HIRABAYASHI Shigeru
金额：
$ 1.85万
依托单位：
Tsurumi University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
2006
资助国家：
日本
起止时间：
2006 至 2007
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-18592150/
关键词：
dental biomaterials adhesive resin cement self-etching primer bond strength acidic monomer

项目摘要

The purpose of this study was to examine the influences of acidic monomer included in self etching primer (SEP) on polymerization of dual-curing resin cement (RC) which uses a SEP as tooth conditioner. Four commercial adhesive systems with different composition were investigated. The shear bond strengths of these RCs to bovine dentin and acrylic resin plate (PMMA) were measured, changing the treating time of SEP(10s or 30s) and with or without light-irradiation to RC(light-curing or self curing mode, respectively), to estimate the degree of polymerization of RC. The change of pH value of each SEP applied on bovine dentin surface was also measured to estimate the residue of acidic monomer.The pH values of SEPs immediately after mixing were different among products in the range of 1.5〜3.3. The pH values of SEPs applied on dentin surface only rose about 0.3〜4.5 even five minutes after application. This result suggested that the acidic monomers still remained fairly on dentin surface treated with SEP at application of RC.The bond strength to dentin was not significantly influenced with the treating time of SEP and the curing mode of RC for any adhesive system. Regarding the bonding to PMMA, however the self Cured samples showed significant lower bond strengths than the light-cured samples for two adhesive systems. Moreover when the light-curing primer for resin inlay was used instead of each SEP on pre-treating of PMMA, the bond strengths of self cured samples were significantly lower than that of light-cured samples for all the RCs used, and two RCs did not almost bond to PMMA in self curing mode.These results suggested that acidic monomer included in each SEP could influence on the self curing mode of the RC and a secondary catalyst for the self curing might be added into the SEP to accelerate polymerization of the resin cement for two products.

这项研究的目的是检查自蚀刻底漆（SEP）中包含的酸性单体的影响（SEP）对使用SEP作为牙齿护发素的双粘膜树脂水泥（RC）的聚合。研究了四个具有不同组成的商业粘合剂系统。测量了这些RCS对牛牙本质和丙烯酸树脂板（PMMA）的剪切键强度，从而改变了SEP（10s或30s）的处理时间（分别为有或没有光辐照），以估算RC的聚合程度。还测量了应用于牛牙本质表面的每个SEP的pH值的变化，以估计酸性单体的保留。混合后的SEP的pH值在1.5至3.3范围内的产物中有所不同。施加在牙本质表面上的SEP的pH值仅在应用后五分钟后仅上升约0.3至4.5。该结果表明，应用RC时用SEP处理的牙本质表面仍然保持公平状态。与牙本质的键强度没有受到SEP处理时间的显着影响，并且在任何粘合剂系统中的RC固化模式和任何粘合系统的固化模式。在PMMA上键入键的粘合物，以较低的键键呈粘合物，以示出两种粘合力的样品，以供较低的粘合型系统。使用镶嵌于PMMA的预处理，而不是每个SEP，自固化样品的键强度明显低于所有使用的RCS的固化样品，而两个RC在自固化模式下几乎没有与PMMA结合，这些结果表明，这些结果表明，在每个SEP中都可以将SEP添加到SEP中，并且可以加入第二个SEP，并在RC中加入了第二个SEP，并且可以在RC上加入第二个cater，并在RC中加入了第二个RC，并且可以在RC上加入cate catefter cat的自我策划模式。树脂水泥的两种产品的聚合。