Resumo

GIL-LOSCOS, Francisco José; ALPISTE-ILLUECA, Francisco; PASCUAL-MOSCARDO, Agustín  e  FYGEROA-GARCIA, Ángela. Are dentin bonding systems a valid option for the treatment of Cervical Dentin Sensitivity (C.D.S.)?. RCOE [online]. 2006, vol.11, n.3, pp.281-290. ISSN 1138-123X.

The aim of this study is to evaluate the "in vitro" capability of fourteen agents proposed for the treatment of cervical dentin sensibility (CDS) to seal dentine tubules, to reduce dentine permeability and to resist the effect of wetness and tooth brushing. Materials and Methods: 140 dentin discs were obtained from freshly extracted human third molars. Samples were divided into fourteen groups of 10 each and were mounted in a perfusion device based on the Pashley ´s system. Each disc was etched with 35% phosphoric acid. Permeability was measured after 1 hour, this value was considered the reference value (100%). One disc was used as a control and nine were treated with a bonding system. Permeability was measured again after 1 hour. One disc was used as a control and 8 were washed with water and subjected to simulated tooth brushing equivalent to three weeks of normal brushing. Subsequebtly, permeability was measured again. Results: All systems reduced dentinal perfusion when applied. Brushing of products produced an increase of permeability. The best results were obtained with Seal & Protect, follwed by Amm-i-dent + Xeno III, Clearfil SE Bond and Amm-i-dent+Scotchbond 1. Conclusions: All products have shown low resistance to washing and brushing. This can justify unsatisfactory clinical results in reducing dentinal sensibility. The best four products were all adhesives or a combination of these, it seems to indicate that adhesives are a good choice to be investigated and improved for the treatment of CDS.

Palavras-chave : Dentin sensitivity; Bonding system; Dentin Permeability.

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