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The effect of different adhesive system applications on push-out bond strengths of glass fiber posts
The Journal of Advanced Prosthodontics ; : 305-311, 2013.
Artigo em Inglês | WPRIM | ID: wpr-77580
ABSTRACT

PURPOSE:

Over the past years, the adhesion of fiber posts luted with simplified adhesive systems has been a matter of great interest. The aim of this study was to assess the post retentive potential of a self-adhesive resin cement using different adhesive systems to compare the push-out bond strengths of fiber posts. MATERIALS AND

METHODS:

The post spaces of 56 mandibular premolar roots were prepared and divided into 4 experimental groups and further divided into 2 subgroups according to testing time (n=7). The fiber posts (Rely X Fiber Post) were luted with a self-adhesive resin cement (RelyX Unicem) and one of the following adhesive systems no adhesive, a total-etch adhesive resin (Single Bond), a two-step self-etch adhesive resin (Clearfil SE Bond) and a one-step self-etch adhesive resin (Clearfil S3 Bond). Each root was cut horizontally, and 1.5 mm thick six root segments were prepared. Push-out tests were performed after one week or three months (0.5 mm/min). Statistical analysis were performed with three-way ANOVA (alpha=.05).

RESULTS:

Cervical root segments showed higher bond strength values than middle segments. Adhesive application increased the bond strength. For one week group, the total-etch adhesive resin Single Bond showed higher bond strength than the self-adhesive resin cement RelyX Unicem applied without adhesive resin at middle region. For 3 months group, the two-step self-etch adhesive resin Clearfil SE Bond showed the highest bond strength for both regions. Regarding the time considered, Clearfil SE Bond 3 months group showed higher bond strength values than one week group.

CONCLUSION:

Using the adhesive resins in combination with the self-adhesive resin cement improves the bond strengths. The bond strength values of two-step self-etch adhesive resin Clearfil SE Bond improved as time passes.
Assuntos

Texto completo: DisponíveL Índice: WPRIM (Pacífico Ocidental) Assunto principal: Dente Pré-Molar / Adesivos / Adesivos Dentinários / Bis-Fenol A-Glicidil Metacrilato / Cimentos de Resina / Vidro Idioma: Inglês Revista: The Journal of Advanced Prosthodontics Ano de publicação: 2013 Tipo de documento: Artigo

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Texto completo: DisponíveL Índice: WPRIM (Pacífico Ocidental) Assunto principal: Dente Pré-Molar / Adesivos / Adesivos Dentinários / Bis-Fenol A-Glicidil Metacrilato / Cimentos de Resina / Vidro Idioma: Inglês Revista: The Journal of Advanced Prosthodontics Ano de publicação: 2013 Tipo de documento: Artigo