Adam Lloyd1, Jonathan P Uhles2, David J Clement2, Franklin Garcia-Godoy3. 1. Department of Endodontics, College of Dentistry, University of Tennessee Health Science Center, Memphis, Tennessee. Electronic address: alloyd@uthsc.edu. 2. Department of Endodontics, College of Dentistry, University of Tennessee Health Science Center, Memphis, Tennessee. 3. Bioscience Research Center, College of Dentistry, University of Tennessee Health Science Center, Memphis, Tennessee.
Abstract
INTRODUCTION: Laser-activated irrigation to remove organic debris from canal isthmuses was investigated using x-ray microfocus computed tomographic imaging. METHODS: A total of 14 extracted human mandibular molars were used. The mesial canals were prepared using a standardized instrumentation protocol. Two groups (n = 7) underwent final irrigation using either standard needle irrigation (SNI) or photon-induced photoacoustic streaming (PIPS). After enlarging canals to 30/.06, canal volumes were reconstructed from micro-computed tomographic scans before and after irrigation to assess removal of organic tissue and inorganic debris by quantitative analysis of the superimposed volumes. Comparisons of the volumes were made using 2-way analysis of variance and Tukey method, with statistical differences considered significant at the alpha = 0.05 level. RESULTS: Debris removal and an increase in root canal system volume for the laser-activated PIPS group was more significant (P < .001) than for the SNI group (P = .04). Irrigation using PIPS increased the canal volume and eliminated debris from the canal system 2.6 times greater than SNI. CONCLUSIONS: Eliminating debris from complex canal spaces found in mandibular molars was achieved at a significantly greater level using laser-activated PIPS irrigation compared with SNI.
INTRODUCTION: Laser-activated irrigation to remove organic debris from canal isthmuses was investigated using x-ray microfocus computed tomographic imaging. METHODS: A total of 14 extracted human mandibular molars were used. The mesial canals were prepared using a standardized instrumentation protocol. Two groups (n = 7) underwent final irrigation using either standard needle irrigation (SNI) or photon-induced photoacoustic streaming (PIPS). After enlarging canals to 30/.06, canal volumes were reconstructed from micro-computed tomographic scans before and after irrigation to assess removal of organic tissue and inorganic debris by quantitative analysis of the superimposed volumes. Comparisons of the volumes were made using 2-way analysis of variance and Tukey method, with statistical differences considered significant at the alpha = 0.05 level. RESULTS:Debris removal and an increase in root canal system volume for the laser-activated PIPS group was more significant (P < .001) than for the SNI group (P = .04). Irrigation using PIPS increased the canal volume and eliminated debris from the canal system 2.6 times greater than SNI. CONCLUSIONS: Eliminating debris from complex canal spaces found in mandibular molars was achieved at a significantly greater level using laser-activated PIPS irrigation compared with SNI.
Authors: Jelena Vidas; Damir Snjaric; Alen Braut; Zoran Carija; Romana Persic Bukmir; Roeland J G De Moor; Ivana Brekalo Prso Journal: Lasers Med Sci Date: 2019-07-18 Impact factor: 3.161