Surface characterization and antibiofilm efficacy in the use of 0.12% chlorhexidine digluconate on resins used to manufacture contemporary temporary restorations, with and without the application of a light cured glaze

• Grant number: 17/11803-8
• Support Opportunities: Scholarships in Brazil - Master
• Start date: November 01, 2017
• End date: February 28, 2019
• Field of knowledge: Health Sciences - Dentistry - Dental Materials
• Principal Investigator: Marcelo Coelho Goiato
• Grantee: Betina Chiarelo Commar
• Host Institution: Faculdade de Odontologia (FOA). Universidade Estadual Paulista (UNESP). Campus de Araçatuba. Araçatuba , SP, Brazil

Abstract

During the rehabilitation with aesthetic ceramic fragments, it is important to use provisional restorations, which are essential for correcting possible failures in the initial planning of the case, and for achieving the clinical success and longevity of the definitive prosthesis, maintaining health and protecting dental and periodontal tissues and reestablishing functions such as chewing, esthetics and phonetics. Therefore, this study aims to investigate the color stability, microhardness, roughness, surface energy and the antibiofilm efficacy of chlorhexidine digluconate at 0.12% on the resin samples used to manufacture provisional prosthesis, with and without a surface application of a light cured glaze. 80 samples of Bis-ACRYL and 80 heat-cured acrylic resin (HC) will be made. Half of samples of each group will be polished with the light cured glaze. These samples will be placed in intraoral devices that will be used by 20 volunteers, which intraoral devices will have 4 control samples (1 RAAQ without glaze, 1 RAAQ with glaze, 1 Bis-ACRIL without glaze, 1 Bis-ACRIL with glaze), and 4 test samples that will be subjected to treatment with 0.12% chlorhexidine digluconate (1 RAAQ without glaze, 1 RAAQ with glaze, 1 Bis-ACRIL without glaze, 1 Bis-ACRIL with glaze). The surface treatment of the tested group will be performed with 0.12% chlorhexidine digluconate to 7 days. All the samples will be submitted to color alteration, microhardness, roughness, surface energy tests before and after the treatment period. After this period, the biofilm will be collected, for later analysis of alkali-soluble polysaccharides (EPS). The quantitative data will be submitted to the test of adhesion to the normal curve, being applied appropriate statistical test for the comparison of the average values. (AU)

Scientific publications

(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)

COMMAR, BETINA CHIARELO; DA SILVA, EMILY VIVIANNE FREITAS; PENITENTE, PAULO AUGUSTO; BITENCOURT, SANDRO BASSO; BARAO, VALENTIM ADELINO RICARDO; GOIATO, MARCELO COELHO; DOS SANTOS, DANIELA MICHELINE. Influence of Light-Curing Glaze and Chlorhexidine Gluconate in the Acrylic Resin Properties: An in situ Study. EUROPEAN JOURNAL OF PROSTHODONTICS AND RESTORATIVE DENTISTRY, v. N/A, p. 7-pg., 2022-08-02. (17/11803-8)

Academic Publications

(References retrieved automatically from State of São Paulo Research Institutions)

COMMAR, Betina Chiarelo. Surface characterization and antibiofilm efficacy in the use of 0.12% chlorhexidine digluconate on resins used in the preparation of contemporary provisional restorations, with and without application of light-curing glaze: In situ study. 2019. Master's Dissertation - Universidade Estadual Paulista (Unesp). Faculdade de Odontologia. Araçatuba Araçatuba.