Evaluation and comparison of shear bond strength of all surface bonding primer with a conventional primer using two different materials of brackets bonded to different surfaces: An in vitro study

Abstract

Orthodontic treatment frequently requires bonding brackets onto various types of surfaces like enamel, metal restorations, composites, ceramics, zirconia, acrylic temporaries etc. The development of new materials and techniques, simplifies the clinical procedures. The purpose of the present study was to evaluate the SBS of all surface bonding Primer (Assure plus Primer) compared with conventional primer (Transbond XT) onto tooth, acrylic temporary crown and Zirconia crown surfaces using metal and ceramic brackets. 120 samples were divided into 3 Groups -Tooth surfaces (n=40), Acrylic temporary crown (n=40) and PFM crown surfaces (n=40). Subgroup A surfaces were primed with Transbond XT and bonded using Transbond XT adhesive paste to metal brackets and ceramic brackets. Subgroups B were primed with Assure Plus and bonded using Transbond XT adhesive paste. After debonding procedure, SBS was assessed. Group-III showed higher SBS values compared to Group-II and Group-I. The least SBS was seen in Group I, Subgroup-I B, Assure Plus Primer and metal brackets combination and the highest was seen in Group-III, Subgroup-III B, Assure Plus Primer and ceramic brackets combination.

Shear Bond Strength and Mode of Failure of Ceramic Brackets to Glazed Feldspathic Porcelain Using Different Bonding Protocols (In Vitro Study)

“…The previous results were also confirmed by Wang et al (8) who reported a SBS of 10.98 MPa with a similar protocol, the thermocycling in this study was 500 cycles. Jamal et al (37) evaluated the effectiveness of RA plus in bonding ceramic brackets to feldspathic porcelain. The samples were roughened by a diamond bur, silane was applied followed by RA plus.…”