ArticleEuropean endodontic journal2025
Investigating the Effect of PIPS Technique by Using Er,Cr: YSGG Irradiation for Sealer Removal in Endodontic Retreatment.
Article in European endodontic journal, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.
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Who cites it
1 citing paper in PubMed.
- Effect of ultrasonic versus laser-activated irrigation on smear layer removal - AnBioinformation · 2026Article
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2 authors.
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No grant is acknowledged in the PubMed record.
Abstract
aimThis study aimed to evaluate the effectiveness of the Er,Cr: YSGG 2780 nm laser pulse duration during root canal retreatment using the laser-activated irrigation method (PIPS).
methodsThe study investigated the cleanliness of root canal walls in single-rooted premolars using PIPS. Teeth were initially instrumented, filled with bioceramic (BC) sealer and gutta-percha, and then retreated using nickel-titanium (NiTi) retreatment rotary files. The teeth were randomly assigned to four equal groups: control (manual irrigation), ultrasonic irrigation (UI), laser-activated irrigation with a 60 µs pulse duration, and laser-activated irrigation with a 700 µs pulse duration. Irrigation solutions consisted of 17% EDTA and 2.5% sodium hypochlorite. Statistical analysis was performed using SPSS version 21.0. Normality was checked using the Kolmogorov-Smirnov and Shapiro-Wilk tests. Group comparisons were conducted using Dunnett's t-test and the LSD test, with a significance level set at p ≤ 0.05.
resultsStatistical analysis of scanning electron microscopy (SEM) images revealed superior cleaning efficiency in both laser groups, with a significant improvement in cleanliness rates compared to the other groups. Group 4 (700 µs) achieved the highest percentage of open dentinal tubules (>75%) in the coronal and middle thirds, while Group 3 (60 µs) showed 50- 75% tubule openness. Groups 1 and 2 showed significantly lower cleaning effectiveness, particularly in the apical third.
conclusionThe pulse duration plays a crucial role in the activation of laser irrigants during root canal retreatment. The 700 µs PIPS activation resulted in better cleaning outcomes compared to the 60 µs laser activation. (EEJ-2025-02-025).
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