Effect of tetracycline on the bond performance of etch-and-rinse adhesives to dentin
Braz. oral res
;
25(5): 459-465, Sept.-Oct. 2011. ilus, tab
Artigo
em Inglês
| LILACS
| ID: lil-601886
ABSTRACT
This study evaluated the effect of modified tetracycline on the resin-dentin bond strength (µTBS), silver nitrate uptake (SNU) and solution homogeneity (SH) of two adhesives. Dentin surfaces were treated with phosphoric acid, rinsed off and either rewetted with water (control group - CO), 2 percent minocycline (MI), 2 percent doxycyline (DO) or 2 percent chlorhexidine (CH). Adhesive systems (Adper Single Bond 2 and Prime Bond NT) and composite were applied and light-polymerized. Specimens were sectioned to obtain bonded sticks (0.8 mm²) to test under tension at 0.5 mm/min. For SNU, specimens were immersed in silver nitrate and analyzed by EDX-SEM. SH was qualitatively analyzed after mixing the adhesives with different solvent-based solutions containing MI, DO and CH. Lower µTBS values were observed in the DO group compared with MI and CH (p = 0.01). Lower SNU was observed for MI and CH. The lowest µTBS for both adhesives was observed for the DO group (p = 0.01). Signs of phase separation were observed for DO with both adhesives. MI or CH used as rewetting solutions after acid etching did not affect the µTBS and hybrid layer quality.
Texto completo:
DisponíveL
Índice:
LILACS (Américas)
Assunto principal:
Tetraciclinas
/
Colagem Dentária
/
Dentina
/
Dessensibilizantes Dentinários
Limite:
Humanos
Idioma:
Inglês
Revista:
Braz. oral res
Assunto da revista:
Odontologia
Ano de publicação:
2011
Tipo de documento:
Artigo
País de afiliação:
Brasil
Instituição/País de afiliação:
State University of Ponta Grossa/BR
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