Abstract
Statement of problem
Which surface treatment provides the optimal bond strength (BS) for the repair of
resin nanoceramics (RNCs) and polymer-infiltrated ceramics (PICs) is unclear.
Purpose
The purpose of this systematic review and meta-analysis of in vitro studies was to
determine the best surface treatment protocols for the repair of PICs and RNCs.
Material and methods
The PubMed, Scopus, and Web of Science electronic databases were searched to select
in vitro studies in English up to March 2020. Studies with fewer than 5 specimens,
those that did not evaluate the BS of PICs or RNCs, and those with aging for fewer
than 30 days and 5000 cycles were excluded. Data sets were extracted, and the mean
differences were analyzed by using a systematic review software program.
Results
Among 284 potentially eligible studies, 21 were selected for full-text analysis, and
9 were included in the systematic review, of which 6 were used in the meta-analysis.
The meta-analyses were performed for each treatment surface versus their respective
control group and their combinations according to material: RNCs and PICs. For RNCs,
airborne-particle abrasion with aluminum oxide (Al2O3) treatment was statistically higher than tribochemical silica airborne-particle abrasion
(CoJet) (P=.02, I2=90%) and that in the hydrofluoric acid (HF) (P<.001, I2=0%) groups and was statistically similar to diamond rotary instrument grinding (P=.40, I2=54%). For PICs, the treatment with hydrofluoric acid (HF) was statistically significantly
higher than with CoJet (P=.03, I2=62%) and airborne-particle abrasion with Al2O3 (P<.001, I2=98%).
Conclusions
The best surface treatment protocol for repair varied according to the restorative
material. HF followed by silanization is suggested for PICs, and airborne-particle
abrasion with Al2O3 or preparation with a diamond rotary instrument for RNCs.
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Article info
Publication history
Published online: February 09, 2021
Footnotes
Supported in part by the Coordenação de Aperfeiçoamento de Pessoal de Nível Superior, Brasil (CAPES), Finance Code 001.
Identification
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© 2020 by the Editorial Council for The Journal of Prosthetic Dentistry.
