In-Vitro permeability of untreated, etched and sealed human dental enamel
Journal Title: Forum Ortodontyczne - Year 2014, Vol 10, Issue 3
Abstract
[b] Aim[/b]. The purpose of this study is to determine if there are differences in the permeability of untreated enamel, etched enamel that has been treated with self-etching primer, and with Pro-Seal and then subjected to varying amounts of thermocycling. [b]Material and methods.[/b] Sixty enamel samples were obtained from human molars and divided into three experimental groups of twenty: etched, self-etching primer, and Pro-Seal. Each sample had a control half and an experimental half. They were placed in 50% aqueous silver nitrate solution, then sectioned and mounted. The amount of dye penetration was measured using a light microscope to determine permeability. Additionally, twenty samples were divided into four experimental groups of five samples each: 500, 1000, 2000, and 3000 thermocycles. Each sample had an untreated half and a Pro-Seal treated half. Each sample was sectioned so that one group underwent thermocycling, and the other did not. Afterwards, permeability was determined. [b]Results[/b]. Etched enamel was the most significantly permeable, enamel treated with Pro-Seal was significantly the least permeable, and enamel treated with self-etching primer was significantly more permeable than untreated enamel but less permeable than etched enamel. [b]Conclusions.[/b] Etching enamel or treating it with self-etching primer increases enamel permeability and increases the susceptibility to white spot lesions immediately after orthodontic bonding. Pro-Seal is an effective means of decreasing enamel permeability and thus white spot lesion susceptibility. (Chiu N, Cubas YP, Orellana MF. In-Vitro permeability of untreated, etched and sealed human dental enamel. Orthod Forum 2014; 10: 157-67). Received 23.05.2014 Accepted 28.07.2014
Authors and Affiliations
Nicole Chiu, Yltze P Cubas, Maria F Orellana
Keywords
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