Influence of dentin pretreatment with titanium tetrafluoride and self-etching adhesive systems on microtensile bond strength

Autor(es)

Bridi, Enrico Coser ^{[1, 2]} ; Botelho Amaral, Flavia Lucisano ^{[1, 2]} ; Gomes Franca, Fabiana Mantovani ^{[1, 2]} ; Turssi, Cecilia Pedroso ^{[1, 2]} ; Basting, Roberta Tarkany ^{[1, 2]}

Afiliação do(s) autor(es)

^[1] Sao Leopoldo Mand, Sch Dent, Campinas, SP - Brazil

^[2] Sao Leopoldo Mand, Res Inst, Campinas, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: AMERICAN JOURNAL OF DENTISTRY; v. 26, n. 3, p. 121-126, JUN 2013.
• Citações Web of Science: 11

Resumo

Purpose: To evaluate the effect of dentin pretreatment with 2.5% titanium tetrafluoride (TiF4) on microtensile bond strength (mu TBS) of one- or two-step self-etching adhesive systems. Methods: 24 human sound third molars were used. A flat dentin surface of each tooth was exposed. After planing, teeth were divided into groups so that dentin would be left untreated or treated with a 2.5% TiF4 solution for 1 minute. Specimens were then subdivided into two groups to receive one of the following adhesive systems: one-step self-etching Adper Easy One (ADP) or two-step self-etching adhesive Clearfil SE Bond (CLEAR). A block of composite measuring 5.0 mm high and 5.0 mm wide was made incrementally on the tooth. Specimens were taken to a metallographic cutter to fabricate sticks with a bond area of approximately 1 mm(2). After 24 hours, specimens were submitted to mu TBS testing and the failure mode was recorded by examining specimens under stereomicroscopy. Scanning electron microscope (SEM) photomicrographs were obtained of the tooth/restoration interface. Results: Two-way ANOVA and Tukey's test demonstrated that pretreatment of dentin with a TiF4 solution did not affect the mu TBS values of either of the adhesive systems (P = 0.675). CLEAR provided higher bond strength than ADP, regardless of whether dentin was or was not pretreated with the TiF4 solution. Failure mode showed mostly adhesive failures in all groups, except when only ADP was used, causing mostly cohesive fractures in resin. (AU)

• Processo FAPESP: 11/02812-7 - Efeito do pré-tratamento da dentina com tetrafluoreto de titânio e sistemas adesivos autocondicionantes quanto ao potencial antimicrobiano e anticariogênico na interface dente/restauração e influência na resistência de união
• Beneficiário: Enrico Coser Bridi
• Modalidade de apoio: Bolsas no Brasil - Mestrado