Work

Er:YAG laser irradiation surface effect of set bioceramic endodontic sealer – in vitro SEM study

Year: 2025

Type: article

Abstract: Introduction: Recent developments in endodontics have led to increased interest in utilizing different methods for the removal of bioceramic endodontic sealers. The Er:YAG laser's specific wavelength and energy delivery, we foresee its potential in laser-assisted removal of bioceramic sealers like BioRoot RCS. Aim: The primary aim is to examine the influence of Er:YAG laser irradiation on set BioRoot RCS and to discern and compare the effects on the sealer of two different time durations and two distinct laser settings. Materials and Methods: Specimens of BioRoot RCS (n = 20), each 10 mm in diameter and 3 mm thickness, were prepared according to manufacturer guidelines and set for 48 h at 37°C and 100% relative humidity. The "LiteTouch" Er:YAG laser system was applied with two different settings: 300 mJ, 5.10 W, 17 Hz, and water spray rate of 5, irradiation time 20 s for Group A (n = 5) and 40 s for Group B (n = 5). Settings of 250 mJ, 5.00 W, 20 Hz, with the same spray rate were used for 20 s irradiation for Group C (n = 5) and 40 s for Group D (n = 5). The laser sapphire tips employed were with dimensions D-1.3 mm and L-19 mm. Only half of each specimen underwent laser treatment, ensuring a controlled and comparative analysis of surface alterations and material removal, assessed using scanning electron microscopy on four different magnifications (x1,000; x2,000; x5,000 and x10,000). Results: All irradiated specimens demonstrated significant macroscopic and microscopic surface changes. We selected and compared scenograms of non-laser treated surfaces and laser treated surfaces of all experimental groups on the four magnifications. For Group A and Group B a greater effect on the material surface was observed in comparison with group C and Group D. Group B and Group D presented more substantial surface alterations compared to group A and Group C respectively. Conclusion: investigation shows the possible use of lasers for bioceramic sealer removal in order to impact retreatment endodontic procedures.

Source: Frontiers in Bioengineering and Biotechnology

DOI: 10.3389/fbioe.2025.1562578

Authors: V. Stefanova, K. Zhekov

Institution: Medical University Plovdiv

Language: English

Topic: Endodontics and Root Canal Treatments

Subfield: Oral Surgery

Field: Dentistry

Domain: Health Sciences

SDG: Good health and well-being

Open Access status: gold

Estimated APC paid: $3,801