Influence of dental exposure to oral environment on smear layer removal and collagen exhibition after using different conditioning agents

• Autor(a) principal: Fontanari, Lucas Amaral [UNESP]
• Data de Publicação: 2011
• Outros Autores: Pinto, Shelon Cristina Souza [UNESP], Cavassim, Rodrigo [UNESP], Spin-Neto, Rubens [UNESP], Ishi, Eduardo de Paula [UNESP], Sampaio, José Eduardo Cezar [UNESP]
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Repositório Institucional da UNESP
• Texto Completo: http://dx.doi.org/10.1590/S0103-64402011000600007; http://hdl.handle.net/11449/73109
• topic: Conditioning agents; Hypermineralization; Scanning electron microscopy; Smear layer; chelating agent; citric acid; collagen; edetic acid; tetracycline; adult; cementum; comparative study; dental surgery; dentin; drug effect; gingiva bleeding; human; methodology; middle aged; pathology; periodontal pocket; preventive dentistry; scanning electron microscopy; tooth calculus; tooth disease; tooth root; ultrastructure; Adult; Chelating Agents; Citric Acid; Collagen; Dental Calculus; Dental Cementum; Dentin; Edetic Acid; Gingival Hemorrhage; Humans; Microscopy, Electron, Scanning; Middle Aged; Periodontal Pocket; Root Planing; Smear Layer; Tetracycline; Tooth Root; Tooth, Impacted

Although in vitro studies have shown encouraging results for root surface conditioning with demineralizing agents, in vivo studies have failed to show its benefits in periodontal healing. This can be attributed to several factors, among which, the hypermineralization of dental surface. Therefore, this in vitro study compared, using scanning electron microscopy (SEM), the effect of root surface conditioning with different conditioners (1% and 25% citric acid, 24% EDTA and 50 mg/mL tetracycline hydrochloride) in impacted teeth and in teeth that had their roots exposed to the oral environment. One trained examiner assessed the SEM micrographs using a root surface modification index. There was a tendency of more root surface modification in the group of impacted teeth, suggesting that the degree of root mineralization influences its chemical demineralization.