Effectiveness of fluoride sealant in the prevention of carious lesions around orthodontic brackets: an OCT evaluation

• Published in: Dental press journal of orthodontics Vol. 20; no. 6; pp. 37 - 42
• Main Authors: Pithon, Matheus Melo, Santos, Mariana de Jesus, de Souza, Camilla Andrade, Leão Filho, Jorge César Borges, Braz, Ana Karla Souza, de Araujo, Renato Evangelista, Tanaka, Orlando Motohiro, Oliveira, Dauro Douglas
• Format: Journal Article
• Language: English
• Published: Brazil Dental Press International 01-12-2015; Dental Press Editora
• Subjects: Animals; Braquetes ortodônticos; Cattle; Cárie dentária; Dental Enamel; Dental Materials; Dentistry; DENTISTRY, ORAL SURGERY & MEDICINE; Desmineralização; Fluorides; Orthodontic Brackets; Toothbrushing; Dental caries; Pit and fissure sealants; Fluorides; Braquetes ortodônticos; Desmineralização; Cárie dentária
• ISSN: 2176-9451; 2177-6709; 2177-6709; 2176-9451
• DOI: 10.1590/2177-6709.20.6.037-042.oar

This article aimed to evaluate in vitro the efficiency of Pro Seal fluoride sealant application in the prevention of white spot lesions around orthodontic brackets.
Brackets were bonded to the buccal surface of bovine incisors, and five groups were formed (n = 15) according to the exposure of teeth to oral hygiene substances and the application of enamel sealant: G1 (control), only brushing was performed with 1.450 ppm fluoride; G2 (control) brushing associated with the use of mouthwash with 225 ppm fluoride; G3, only Pro Seal sealant application was performed with 1.000 ppm fluoride; G4 Pro Seal associated with brushing; G5 Pro Seal associated with brushing and mouthwash. Experimental groups alternated between pH cycling and the procedures described. All specimens were kept at a temperature of 37 °C throughout the entire experiment. Both brushing and immersion in solutions were performed within a time interval of one minute, followed by washing in deionized water three times a day for 28 days. Afterwards, an evaluation by Optical Coherence Tomography (OCT) of the spectral type was performed. In each group, a scanning exam of the white spot lesion area (around the sites where brackets were bonded) and depth measurement of carious lesions were performed. Analysis of variance (ANOVA) was applied to determine whether there were significant differences among groups. For post hoc analysis, Tukey test was used.
There was statistically significant difference between groups 1 and 2 (p = 0.003), 1 and 3 (p = 0.008), 1 and 4 (p = 0.000) and 1 and 5 (p = 0.000). The group in which only brushing was performed (Group 1) showed deeper enamel lesion.
Pro Seal sealant alone or combined with brushing and/or brushing and the use of a mouthwash with fluoride was more effective in protecting enamel, in comparison to brushing alone.