Research Information System
Thesis Type: Doctorate
Institution Of The Thesis: Gazi Üniversitesi, Sağlık Bilimleri Enstitüsü, Turkey
Approval Date: 2017
Student: MEHMET KALÇAY
Supervisor: ALİ CEMAL TINAZ
Abstract:The aim of this study is to evaluate and compare the effects of different concentrations of phytic acid on smear layer removal, on root dentine microhardness and erosion. 135 freshly extracted, single-rooted, mandibular second premolar teeth with relatively similar dimensions and lengths were selected for this study. Teeth with an approximate length of 18 20 mm were used in this study. All teeth were instrumented with Protaper Universal files, using the crown-down technique up to size 30, 0.06 taper (F3). Between each file, root canals were irrigated with 2 ml, 5% NaOCl using a 30 G needle. After instrumentation, teeth were randomly allocated into two groups; 75 teeth were used for microhardness tests and 60 teeth were used for the evaluation of smear layer and erosion. According to the results of this thesis, 1% phytic acid solution was proved to be more effective than conventional 17% EDTA solution even when the concentration was reduced by 50%. 17% EDTA solution was effective in the removal of the smear layer at the coronal and middle thirds of the root canal. However the solution was not as effective at the apical third of the root canal. 1% phytic acid solution has shown better penetration to the apical third of the root canal removing the smear layer more efficiently when compared with the other experimental groups. To develop a better understanding of the effects of phytic acid solution on the root canal dentine, more research should be carried out.