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Measuring erosive enamel loss in vitro after single-application surface treatments

Olley, Ryan 2012. Measuring erosive enamel loss in vitro after single-application surface treatments. Presented at: 2012 IADR/LAR General Session, Iguaçu Falls, Brazil, 20-23 June 2012. SAGE Publications,

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Objective: To compare a novel pro!lometry technique for investigating the e"ect of surface treatments on the volume of enamel loss from multiple cycles of erosion-attrition in vitro. Method: A novel surface analysis technique was developed for non-destructive repeat measurements of enamel surfaces using a white-light confocal pro!lometer. The measurement technique was used to investigate the e"ect of two sodium #uoride varnishes and a resin-based adhesive on erosion-attrition in vitro . Polished human enamel specimens were pretreated with one of four treatments [G1=45200 ppm F varnish (Bi#uoride 10®, Voco Gmbh, Cuxhaven, Germany); G2:22600 ppm F varnish (Duraphat® varnish, Colgate-Palmolive, Piscataway, USA); G3: self etch adhesive (Adper™ Prompt™ Self-Etch Adhesive (3M ESPE, St. Paul, MN, USA); G4: distilled water negative control]. All samples were subjected to 15 cycles of simulated erosion-attrition prior to measurement using white-light confocal pro!lometry. The conventional technique measured both loss of coating and loss of enamel together whereas the novel technique digitally removed the coating from the surface prior to measurement of enamel loss only. Result: The novel technique quanti!ed volume loss of enamel without the need to remove the surface coating prior to measurement, whereas the conventional measurement outcomes were confounded by the loss of product coating as well as enamel loss. The novel technique revealed that initially, both the #uoride varnishes and self-etch adhesive reduced enamel volume loss in comparison to control (P<0.01). However, after 15 cycles of erosion-attrition, whilst the #uoride varnishes did statistically signi!cantly reduce enamel volume loss (P<0.01), the self-etch adhesive did not. Conclusion: The non-destructive nature of the novel measurement technique allowed the surface coatings to be left in situ during measurement whilst multiple cycles of erosive wear and repeated measurements were made. Clinically relevant data were collected regarding the potential e"ects of #uoride containing surface treatments to modify erosive wear of enamel.

Item Type: Conference or Workshop Item (Poster)
Date Type: Publication
Status: Published
Schools: Dentistry
Publisher: SAGE Publications
ISSN: 0022-0345
Last Modified: 17 Jun 2020 12:45

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