Title: 0816 - Efficacy of XP-Endo Finisher in Mandibular Molars: Micro CT Analysis
Emad Moawad (Presenter)
School of Dentistry, University of Liverpool
Kate Blundell, School of Dentistry, University of Liverpool
Fadi Jarad, School of Dentistry, University of Liverpool
Objectives: To investigate the percentage of root canal surface instrumentation by XP-endo Finisher NiTi file (XPF) in mandibular molars, using Micro-Computed Tomography (µCT) imaging.
Methods: Thirty-seven mandibular molars were scanned using µCT scans at a high resolution of 26µm.Twenty-four molars were selected and divided into 2 groups based on stratified randomisation of canal space volume, canal anatomy, degree of curvature and canal dimensions. Molars were scanned with µCT at 20µm resolution pre-preparation and post-preparation. Group-1 was prepared using XP-endo Shaper (XPS). Group-2 was prepared using ProTaper Next (PTN). Both groups were then prepared using XPF. A single operator undertook all the preparation. Images were reconstructed in three-dimensions, to allow analysis using Materialise package.
Data were recorded and analysed in SPSS-22 software using Univariate analysis and descriptive statistics.
Results: The results showed difference in canal space volume between pre and post preparation in mesial roots with a mean of = 166618.14 µm3, SD = 158807.3 with XPF-in XPS group compared with mean= 183219.26 µm3, SD = 202804 with XPF-in PTN group. In distal roots group 1 showed a mean = 903514.64, SD = 2400513.8 compared with a mean = 999308.34, SD = 2722310.4 in group 2. The mean percentage of root canal wall instrumentation with XPF in XPS group was = 5.5%, SD = 3.4 in mesial roots and 6.7%, SD = 5.7, in distal roots. For XPF in PTN group the percentage was mean= 5.9%, SD = 5 in mesial roots and mean= 5.6%, SD = 5.6 in distal roots. There was no statistically significant effect on percentage of instrumentation or difference in volume with XPF when used after XPS or PTN.
Conclusions: Within the limitations of the study, XPF used as a finisher file after XPS and PTN improved the percentage of root canal wall instrumentation without significant further loss of root dentine.
The submitter must disclose the names of the organizations with which any author have a relationship, the nature of the relationship, and the clinical or research area involved. The following is submitted: NONE