Effects of plastic bracket primer on the shear bond strengths of orthodontic brackets.

Abstract:

Background/purpose:To assess the usefulness of plastic bracket primer (PBP) for improving the bond strength of plastic brackets (PBs) using three types of orthodontic brackets, including PBs, metal brackets (MBs), and ceramic brackets (CBs). Materials and methods:A total of 162 premolars were gathered and divided equally into six groups of 27. Three groups were tested with the application of PBP (PB+, MB+, and CB+), and three groups were tested without primer (groups PB-, MB-, and CB-). All the groups were bonded using BeautiOrtho Bond II self-etching adhesive. The shear bond strength (SBS) was measured and the bond failure mode was evaluated using the adhesive remnant index after debonding. Results:There were significant differences in the mean SBS between groups PB-, MB and CB-, between PB+ and CB+, and between MB+ and CB+. Group PB + had a significantly higher mean SBS than group PB-. The occurrence of bond failure at the enamel and adhesive interface was more frequent in groups PB+ and CB- than in group PB-; and in groups PB+ and CB + than in group MB+. Conclusion:Plastic bracket primer can increase the bond strength of PBs to the level of metal brackets, but not to the level of ceramic brackets.

journal_name

J Dent Sci

authors

Saito H,Miyagawa Y,Endo T

doi

10.1016/j.jds.2020.07.014

subject

Has Abstract

pub_date

2021-01-01 00:00:00

pages

424-430

issue

1

eissn

1991-7902

issn

2213-8862

pii

S1991-7902(20)30172-0

journal_volume

16

pub_type

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