Effect of palm oil alone or associated to stannous solution on enamel erosive-abrasive wear: a randomized in situ/ex vivo study

Publication date: Available online 18 July 2018

Source: Archives of Oral Biology

Author(s): Franciny Querobim Ionta, Catarina Ribeiro Barros de Alencar, Natália Mello dos Santos, Bianca Tozi Portaluppe Bergantin, Poliana Pacifico Val, Heitor Marques Honório, Thais Marchini de Oliveira, Daniela Rios

Abstract

Objective

Palm oil has demonstrated preventive potential against initial erosive demineralization in vitro. This in situ study evaluated the effect of palm oil alone or associated with stannous-containing (Sn) solution on preventing enamel loss from an erosive/abrasive challenge.

Design

This single-blind, randomized, crossover in situ/ex vivo study was developed in four phases (one per group of five days) with sixteen volunteers. Enamel blocks (n = 256) were allocated to groups according to the treatment: Palm oil; Palm oil plus Sn solution; Sn solution – positive control; and Deionized water - negative control. Half of the enamel blocks of each group was subjected to erosion and the other half to erosion + abrasion. The daily ex vivo protocol consisted of four citric acid immersions (2 minutes). Before the first and third acid exposure, the blocks were treated with the test solutions (1 drop/block) for 1 minute followed by acid immersion and abrasive challenge (toothpaste was applied on all blocks and half were brushed for 15 seconds/block). Enamel loss was quantified profilometrically and data were analyzed by two-way ANOVA and Tukey's test (p < 0.05).

Results

A significant difference was found for type of treatment (p < 0.001); wear condition (p = 0.38) and the treatment x condition interaction (p = 0.33) was non-significant. Palm oil associated or not to Sn solution significantly reduced enamel wear in comparison with the negative control but did not differ from the positive control (p > 0.05).

Conclusions

Palm oil was able to prevent enamel loss under erosive and erosive + abrasive challenges in a similar extend to stannous-containing commercial solution.

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