锌掺杂对牙科粘合剂物理化学性质的影响。

Effect of zinc-doping in physicochemical properties of dental adhesives.

作者信息

Pomacóndor-Hernández César, Osorio Raquel, Aguilera Fátima S, Cabello Inmaculada, De Goes Mario, Toledano Manuel

出版信息

Am J Dent. 2015 Oct;28(5):292-6.

Abstract

PURPOSE

To evaluate changes in the physicochemical properties, water sorption (WS), solubility (SO), modulus of elasticity (E), ultimate tensile strength (UTS), and microhardness (MH) tests were undertaken in zinc-doped dental adhesives.

METHODS

Two bonding resins, Adper Single Bond Plus (SB) and Clearfil SE Bond (SEB), were zinc-doped by mixing them with 5, 10 or 20 wt% of ZnO powder, or with 1 or 2 wt% ZnCl2. Resin disks were made of each adhesive blend for the evaluation of WS, SO, and MH, and dumbbell-shaped specimens were prepared for E and UTS testing.

RESULTS

An increase in WS and SO was observed for adhesives doped with ZnCl2. A reduction in WS was observed for the adhesive blends containing 10% or 20 wt% ZnO, while the SO was not altered in any of the ZnO-doped adhesives. An increase in E values was observed only for the SB adhesive doped with ZnCl2. For SEB-blends, the incorporation of zinc compounds did not alter the E values. UTS values decreased when SEB was doped with ZnO. SB-blends doped with 20 wt% ZnO significantly increased their MH, and the addition of zinc to the SEB-blends augmented the MH values in all cases.

摘要

目的

为评估锌掺杂牙科粘合剂的物理化学性质变化，进行了吸水率（WS）、溶解度（SO）、弹性模量（E）、极限拉伸强度（UTS）和显微硬度（MH）测试。

方法

通过将两种粘结树脂Adper Single Bond Plus（SB）和Clearfil SE Bond（SEB）与5%、10%或20%重量的ZnO粉末或1%或2%重量的ZnCl₂混合进行锌掺杂。由每种粘合剂混合物制成树脂圆盘用于评估WS、SO和MH，并制备哑铃形试样用于E和UTS测试。

结果

观察到掺杂ZnCl₂的粘合剂的WS和SO增加。观察到含有10%或20%重量ZnO的粘合剂混合物的WS降低，而在任何掺杂ZnO的粘合剂中SO均未改变。仅观察到掺杂ZnCl₂的SB粘合剂的E值增加。对于SEB混合物，锌化合物的加入未改变E值。当SEB掺杂ZnO时，UTS值降低。掺杂20%重量ZnO的SB混合物显著提高了其MH，并且在所有情况下向SEB混合物中添加锌均提高了MH值。