975 nm Diode Laser-Mediated Dentin Surface Modification Enhances Bio-ceramic Sealer Retention: Comparative Study with Er: YAG Photoacoustic Irrigation.

Authors

Amer M Alanazi, Azmat Ali Khan

Published in

Pakistan journal of medical sciences. Volume 42. Issue 8. Pages 2038-2044.

Abstract

To evaluate different irrigation protocols, Photon-Induced Photoacoustic Streaming (PIPs) using Sodium hypochlorite (NaOCl) and NaOCl with EDTA and diode laser (DL) compared to syringe irrigated (SI)-NaOCl+EDTA (control) on smear layer (SL) and dislocation resistance of Bioceramic (BC) sealers to canal dentin.
This in vitro experimental study was approved by the institutional review board, King Saud University CDRC# FC-58-41-2026. The duration of the study was three months, January 1, 2026 - March 1, 2026. Seventy five central incisors were included. The prepared specimens were randomly divided into three experimental groups according to the disinfection protocol. Group-1: SI-NaOCl+EDTA (Control), Group-2: PIPS-NaOCl+EDTA, and Group-3: NaOCl+ EDTA+DL. On five specimens from each category, SL removal was assessed using a scanning electron microscope (SEM). Ten specimens from each category were obturated with premixed Endosequence BC sealer (EBCS), and another 10 were bonded with two-component BioRoot RCS (BRS). The Universal Testing Machine was used to assess dislocation resistance. The failure type was evaluated using a stereomicroscope. ANOVA with post hoc comparisons of SL elimination and dislocation resistance among the tested categories.
Group-3 NaOCl+EDTA+DL specimens displayed the highest SL removal and maximum scores of dislocation resistance. Group-1 SI-NaOCl+EDTA-treated canals showed the lowest SL removal and the lowest dislocation resistance.
DL as an adjunctive therapy after conventional syringe irrigation utilizing NaOCl and EDTA displayed the most satisfactory performance in terms of removing SL and improving the dislocation resistance of different bioceramic sealers.

PMID:
42668780
Bibliographic data and abstract were imported from PubMed on 30 Aug 2026.

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