Avaliação in vitro do pH do hidróxido de cálcio usado como medicação intracanal em associação com clorexidina e racealfatocoferol

• Autor(a) principal: Kuga, Milton Carlos [UNESP]
• Data de Publicação: 2010
• Outros Autores: Pirolla, Maristella Oliveira, Freitas, Paula Christiane, Sant'Anna Júnior, Arnaldo, Guerreiro-tanomaru, Juliane [UNESP], Só, Marcus Vinicius Reis
• Tipo de documento: Artigo
• Idioma: por
• Título da fonte: Repositório Institucional da UNESP
• Texto Completo: http://www.upf.br/seer/index.php/rfo/article/view/1357; http://hdl.handle.net/11449/125868
• topic: Calcium hydroxide; Chlorhexidine gluconate; Alpha-tocopherol; Hidróxido de cálcio; Digluconato de clorexidina; Alfa-tocoferol

Objective: The aim of this study was to evaluate the pH of calcium hydroxide (CalenTM) when associated or not with chlorhexidine 0.4%, and when associated with chlorhexidine with the addition of 20% or 10% of alphatocopherol (AchéTM), assessed in several periods of time. Methods: Fourty dentine tubes 20 mm, properly standardized, were made from bovine anterior teeth roots. Following, a perforation was achieved in the roots distal face at 7 mm from the cervical radicular line by using a #1/2 carbide bur. After complete root sealing is made, except in the perforation local, the radicular canals were filled with one of the following associations: Group I – Calen®; Group II – Calen™ with chlorehxidine at 0.4%; Group III – Calen™ with chlorhexidine at 0.4% with the addition of 20% (weight) of alhatocopherol compound and Group IV – Calen™ with chlorhexidine at 0.4% with the addition of 10% (weight) alphatocopherol. After cervical sealing is accomplished, the roots were immersed in water MiliQ and the pH, assessed in 24h, 7, 14, 21, 28 and 45 days. Results and Conclusion: In all periods tested, the pH of the calcium hydroxide (Calen™) was similar to the pH of the calcium hydroxide (Calen™) associated with chlorhexidine 0.4% and 10% alphatocopherol (p > 0.05). The association of 20% alphatocopherol obtained the pH lower than the association with 10% (p < 0.05). The pH of the association with chlorhexidine was similar to the pure calcium hydrocide (Calen™) after the 14th day (p > 0.05) only. Therefore, on the 45th day, this difference was significant again (p < 0.05).