Effect of <Phytic Acid-Stannous Fluoride> Primer on Adhesion

<植酸-氟化亚锡>底漆对附着力的影响

基本信息

批准号：
05454535
负责人：
HIRASAWA Tadashi
金额：
$ 4.29万
依托单位：
Tsurumi University
依托单位国家：
日本
项目类别：
Grant-in-Aid for General Scientific Research (B)
财政年份：
1993
资助国家：
日本
起止时间：
1993 至 1994
项目状态：
已结题

项目摘要

The <Phytic acid (PYA)-Stannous Fluoride (SnF_2) > primer has been developed as the tooth conditioner for bonding of dental resin adhesives to tooth substrates in our department. In the present study, the effects of this primer on bonding of adhesive resin and glass ionomer cements to tooth substrates, castable ceramics and hydroxyapatites were examined using various commercial cements containing functional monomers and polycarboxylic acids. In all bonding-systems, this primer was vary effective. In addition, the new informations with which could explain the action mechanism of this primer were got.This primer was effective on bonding to castable ceramics and hydroxyapatites which do not contain organic components such as collargen in tooth substrates. This results suggest that the chemical interaction between PYA and apatites which is an inorganic component of tooth substrates is related to the effects of this primer on bonding to tooth. The primer in which PYA salt partially substituted with sodium, the treatment with which was very mild for demineralization to tooth, was used in place of PYA had the same effects as the original primer. This result suggests that the chemical interaction bwtween Sn^<2+> fixed tooth substrates with PYA and functional monomers or polycarboxylic acids containing cements is the main effect of this primer rather than its demineralization ability to tooth substrates. The treatment with this primer requires two steps with PYA and SnF_2 solutions, respectively. The effect of the one-step primer in which PYA and SnF_2 were mixed was lower than that of the original two-step primer. This result also supports the action mechanism of this primer mentioned above. However, this hypothesis is very complex. Therefore, further reseraches should be performed by means of instrumental analysis such as ESCA and IR specroscopy to prove the action mechanism of this primer.

<植酸（PYA） - 静脉氟化物（SNF_2）>已开发为牙齿护发素，用于将牙齿树脂粘合剂粘合到我们部门的牙齿底物上。在本研究中，使用含有功能单体和多羧酸的各种商业水泥研究了该底漆对牙齿底物，可铸造陶瓷和羟基磷灰石粘合的影响。在所有键合系统中，该底漆都是有效的。此外，可以解释该底漆的作用机理的新信息。该底漆有效地与可铸造的陶瓷和羟基磷灰石粘合，这些陶瓷和羟基磷灰石不包含有机成分，例如牙齿底物中的锁骨。该结果表明，Pya与磷灰石之间的化学相互作用是牙齿底物的无机成分与该底漆对牙齿粘结的影响有关。使用钠盐部分取代钠的底漆，用于脱矿物的矿化的处理非常温和，以代替PYA的作用，其作用与原始底漆具有相同的作用。该结果表明，sn^<2+>之间的化学相互作用与pya和功能性单体或含有水泥的聚羧酸的固定牙齿底物是该引物的主要作用，而不是其牙齿底物的脱矿物化的能力。该底漆的处理分别需要使用PYA和SNF_2溶液进行两个步骤。混合Pya和SNF_2的一步底漆的效果低于原始两步底漆的效果。该结果还支持上述该底漆的作用机制。但是，这个假设非常复杂。因此，应通过仪器分析（例如ESCA和IR规范镜检查）进行进一步的分离，以证明该底漆的作用机理。