Inhibition of demineralization around the enamel-dentin/restoration interface after dentin pretreatment with TiF4 and self-etching adhesive systems

Autor(es)

Bridi, Enrico Coser ^[1] ; Botelho do Amaral, Flavia Lucisano ^[1] ; Gomes Franca, Fabiana Mantovani ^[1] ; Turssi, Cecilia Pedroso ^[1] ; Basting, Roberta Tarkany ^{[1, 2, 3]}

Afiliação do(s) autor(es)

^[1] Sao Leopoldo Mandic Sch Dent & Res Inst, Campinas, SP - Brazil

^[2] Fac Odontol, Dept Odontol Restauradora Dentist, Rua Jose Rocha Junqueira, 13 Bairro Swift, BR-13045755 Campinas, SP - Brazil

^[3] Inst Pesquisas Sao Leopoldo Mandic, Rua Jose Rocha Junqueira, 13 Bairro Swift, BR-13045755 Campinas, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: CLINICAL ORAL INVESTIGATIONS; v. 20, n. 4, p. 857-863, MAY 2016.
• Citações Web of Science: 3

Resumo

The objective of this study was to evaluate the inhibition of demineralization around enamel-dentin/restoration interface after dentin pretreatment with 2.5 % titanium tetrafluoride (TiF4). Forty dental class V cavities at the cementoenamel junction were distributed into four groups (n = 10), according to the presence or absence of TiF4 and to the adhesive system (Clearfil SE Bond/CL and Adper EasyOne/AD), and restored with a resin composite. A dynamic pH cycling model was used to induce the development of artificial caries lesions. After sectioning the dental blocks, Knoop microhardness tests were performed at different depths (20, 40, and 60 mu m from the occlusal margin of the restoration) and at different distances (100, 200, and 300 mu m from the adhesive interface). Repeated measures three-way analysis of variance (ANOVA) and Tukey's test were used (alpha = 0.05). For enamel, there were no differences in the microhardness values for CL, AD, and TiF4-AD at depths, regardless of the distances. Considering each depth, there were no significant differences among treatments. For dentin, ANOVA showed no significant interaction among the independent variables treatment{*}distance{*}depth (p = 0.994), no significant interaction between treatment{*}depth (p = 0.722), no significant interaction between treatment{*}distance (p = 0.265), no significant interaction between depth{*}distance (p = 0.365), and no significant effect on treatment (p = 0.151), depth (p = 0.067), or distance (p = 0.251). Dentin pretreatment of the cavity walls with TiF4 before self-etching adhesive systems was not effective in inhibiting demineralization around the enamel-dentin/restoration interfaces. The mechanism of incorporating fluoride in enamel and dentin of the cavity walls to inhibit demineralization around restorations seems ineffective when using TiF4 as a dentin pretreatment. (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