Stability of sodium hypochlorite solution in different storage mediums

• Autor(a) principal: Oliveira, Henrique Xavier Peixoto
• Data de Publicação: 2021
• Tipo de documento: Dissertação
• Idioma: eng
• Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
• Texto Completo: http://hdl.handle.net/10451/51888
• topic: Teses de mestrado - 2021; Saúde Oral

Aim: The aim of this study is to evaluate variations of NaOCl concentration when the solution exposed to different storage recipients found in dental practices, during 5 days. Materials and Methods: This in vitro experience was performed using three different recipients: black (generic brand), white (generic brand) and frosted glass (generic brand). For each type of recipient there were two different capacities, 1L and 5L. Each of the recipients were filled with NaOCl (commercial generic brand bleach) with an expected concentration of 5%. As control it was used two other commercial generic bleaches, both capacities 1L and 5L, that remained in their original recipient. For one week, every hour from 9h to 17h it was poured 30ml of NaOCl in order to replicate a week’s work at an endodontic clinic. Every hour it was measured the concentration of each sample of NaOCl using the iodometric titration method. At the end of each day all recipients were storage in a closed storage room at room temperature. The statistical analysis was performed using the software Excel Microsoft and IBM SPSS. Program. It was used the Spearman correlation test and p value of 0,001. Results: There is a statistically significant correlation on the change of NaOCl concentration on the black recipient, on the white recipient and on the frosted glass recipient during the week. The black recipient was the one with the least variation of concentration. Conclusions: The type of recipient for the storage of NaOCl influences its concentration during the week. The black recipient was considered the best one to use. Even though this variation on the concentration occurs, the NaOCl is still effective on the endodontic treatment.