Adhesion promoters: effects on the bond strength of brackets.
OBJECTIVE
To evaluate the effect of two adhesion promoters on shear bond strength and remnant adhesive of brackets cemented with a light-cured orthodontic adhesive resin system.


METHODS
The two adhesion promoters tested were OrthoSolo and All-Bond 2 Primer. Seventy-five upper premolars were divided into three groups of 25. A control group was established using Transbond-XT adhesive system and two experimental groups: Transbond-XT/OrthoSolo and Transbond-XT/All-Bond 2. Shear bond strength was measured using a universal testing machine and adhesive remnant was quantified using an image analysis equipment.


RESULTS
The application of Orthosolo significantly increased bond strength for Transbond-XT adhesive system (P< 0.017). All-Bond 2 primer did not significantly increase the bond strength of Transbond-XT (P> 0.017). The Adhesive Remnant Index results and the analysis of the percentage of area of tooth occupied by adhesive indicated that adhesive remnant after debonding did not increase significantly (P> 0.05) with the use of either of the promoters.
Vicente
Ascensión
A
Unit of Orthodontics, Dental Clinic, University of Murcia, Hospital Morales Meseguer, 2a planta, C/Marqués de los Vélez, s/n, 30008 Murcia, Spain. ascenvi@um.es
Bravo
Luis A
LA
Romero
Martín
M
Ortiz
Antonio J
AJ
Canteras
Manuel
M
D016009:Chi-Square Distribution; D001840:Dental Bonding / Q000379:methods*; D017220:Dentin-Bonding Agents / Q000737:chemistry*; D008422:Materials Testing / Q000379:methods; D008689:Methacrylates / Q000737:chemistry*; D016910:Orthodontic Brackets; D019279:Resin Cements / Q000737:chemistry*; D033081:Shear Strength; D018709:Statistics, Nonparametric
D017220:Dentin-Bonding Agents; D008689:Methacrylates; D019279:Resin Cements; C477790:Transbond XT; C100742:All-Bond 2