Open AccessEFFECT OF ETCHING TECHNIQUES ON THE SHEAR BOND STRENGTH OF ADHESIVE PRECOATED BRACKETS BONDED IN VITRO
Author(s) -
Elsanuse Saied Abdelmegeed Bilgasem
Publication year - 2021
Publication title -
mağallaẗ al-ʿulūm al-taṭbīqiyyaẗ
Language(s) - English
Resource type - Journals
eISSN - 2708-7301
pISSN - 2708-7298
DOI - 10.47891/sabujas.v0i0.1-12
Subject(s) - phosphoric acid , adhesive , etching (microfabrication) , materials science , composite material , bond strength , primer (cosmetics) , shear strength (soil) , universal testing machine , dentistry , ultimate tensile strength , chemistry , metallurgy , layer (electronics) , geology , medicine , organic chemistry , soil science , soil water
This study was designed to compare shear bond strength durability of two etching techniques namely conventional etching and self-etching primer techniques, when using Adhesive pre-coated brackets (APCII). Thirty extracted premolars were divided into two equal groups (group 1: etched with 37% Phosphoric acid and group 2: bonded with transbond plus self-etching primer), each group was further subdivided into three subgroups each of them contains five teeth, at different storage times: 24 hours, 30 days and 3 months. Universal testing machine was used to measure shear bond strength. T-test revealed that there was no significant difference in shear bond strength between the two etching techniques at 24 hours and 30 days, while showed a highly significant difference (P ≤ 0.01) at 3 months. For the three storage times, self-etching primer showed less adhesive remnant on the teeth than that of Phosphoric acid etching. It can be concluded that self-etching primer provided shear bond strength Comparable to that of phosphoric acid, and it has less adhesive remnant than conventional etching technique.