Optical coherence tomography analysis of resin infiltrant penetration into white spot lesions

• Grant number: 16/11246-9
• Support Opportunities: Scholarships in Brazil - Scientific Initiation
• Start date: November 01, 2016
• End date: October 31, 2017
• Field of knowledge: Health Sciences - Dentistry
• Principal Investigator: Adriana Bona Matos
• Grantee: Gustavo Souza Galvão
• Host Institution: Faculdade de Odontologia (FO). Universidade de São Paulo (USP). São Paulo , SP, Brazil

Abstract

The minimally invasive approach claims for the detection and treatment of early caries lesions. Resin infiltrant materials can penetrate into porosities of body of the lesion by capillary forces, preventing the progression of white spot lesions, improving esthetic and providing support to enamel. It is suggested that Optical Coherence Tomography (OCT) could assess penetration depth of the resin infiltrant into white spots lesions, which may provide information about the lesion's progression. Therefore, the aim of this study will be to evaluate the efficiency of the penetration of the resin infiltrant into porosities of artificial white spot lesions, produced by microbiological method and using OCT. To obtain the artificial white spot lesions, cariogenic challenge will be performed in a culture medium that contains 1% sucrose, among with 15 specimens of bovine teeth for 14 days. The ideal achievement is to obtain standard lesions around or deeper than 400 µm, which are going to be measured through OCT. The infiltrant will be applied on the lesion and another OCT reading will be performed, indicating the technique's ability to detect the material in porosities, the depth reached by the infiltrant. Penetration depth percentage of infiltrants will be calculated and obtained images will be described.