The effect of a tin-containing fluoride mouth rinse on the bond between resin composite and erosively demineralised dentin

Abstract

The effect of a tin-containing fluoride mouth rinse on the bond between resin composite and erosively demineralised dentin Abstract Objectives: To evaluate the effect of a tin-containing fluoride (Sn/F) mouth rinse on microtensile bond strength (µTBS) between resin composite and erosively demineralised dentin. Materials and Methods:Dentin of 120 human molars was erosively demineralised using a 10-day cyclic de-and remineralisation model. For 40 molars the model comprised erosive demineralisation only, for another 40 the model included treatment with NaF solution, and for yet another 40 the model included treatment with a Sn/F mouth rinse. In half of these molars (n=20) the demineralised organic matrix was continuously removed by collagenase. SiC paper ground, non-erosively demineralised molars served as control (n=20). Subsequently, µTBS of Clearfil SE/Filtek Z250 to the dentin was measured and failure mode determined.Additionally, surfaces were evaluated by SEM and EDX.Results: Compared to the non-erosively demineralised control, erosive demineralisation resulted in significantly lower µTBS regardless of the removal of demineralised organic matrix. Treatment with NaF increased µTBS, but the level of µTBS obtained by the non-erosively demineralised control was only reached when the demineralised organic matrix had been removed. The Sn/F mouth rinse led to significantly higher µTBS than did the non-erosively demineralised control, both with or without removal of demineralised organic matrix. The Sn/F mouth rinse yielded higher µTBS than did the NaF solution.Conclusions: Treatment of erosively demineralised dentin with a NaF solution or a Sn/F mouth rinse increased the bond strength of resin composite.Clinical Relevance: Bond strength of resin composite to eroded dentin was not negatively influenced by treatment with a tin-containing fluoride mouth rinse.

Profilometric Quantification of Erosive Tissue Loss in Dentine: A Systematic Evaluation of the Method

“…Citric acid is the most often used demineralisation agent in studies of this kind, and the demineralisation durations were also chosen according to published research covering a wide range of demineralisation periods and of organic matrix thickness. The removal of the organic structures by collagenase solution has successfully been used in previous studies from different working groups [Ganss et al, 2004;Kato et al, 2012;Flury et al, 2013]. The collagenase is able to selectively remove the demineralised organic structures and does not remove additional mineral from the surface, as shown in a previous study [Ganss et al, 2009b].…”

Impact of erosive conditions on tooth-colored restorative materials

“…It is conceivable that use of such a mouth rinse might have an influence on the bond strength of dentin adhesives applied on eroded dentin previously treated with this mouth rinse. In contrast to this assumption, it was shown that bond strength of resin composite and an MDP-containing self-etching adhesive (Clearfil SE Bond, Kuraray, Tokyo, Japan) to eroded dentin was not negatively influenced by the treatment with a tin-containing fluoride mouth rinse [71]. Further studies by the same group supported the hypothesis, that this effect might be due to a bond promoting capacity of the MDP-adhesive system to tincompounds in the dental hard tissue being present after use of the tin-containing fluoride mouth rinse [72,73].…”

Restorative Therapy of Erosive Lesions

“…The incorporated tin might interfere with the adhesive applied during the following restorative procedure and thus impair the adhesion of the resin composite, reducing the longevity of the restoration. However, using an MDP-containing 2-step self-etching adhesive system (Clearfil SE Bond; Kuraray, Tokyo, Japan), bond strength to eroded dentine has been found not to decrease as a consequence of previous treatment with a tin-containing fluoride mouth rinse [13]. Indeed, bond strength increased.…”

“…As a result of erosive processes dentine gradually becomes sclerotic, displaying a hypermineralized shiny surface along with tubular occlusion [6]. Although a few studies, using bovine dentine, have found no difference between resin bond strength to normal and sclerotic dentine [7,8], most studies, using human dentine, have reported bond strength to sclerotic dentine to be lower than the bond strength to normal dentine [4,[9][10][11][12][13]. The decrease is thought to result from the tubular occlusion by mineral salts, preventing resin tag formation [6].…”