Work

To investigate the impact of different post-space disinfectants Nd: YAP laser, Radachlorin, and calcium oxide nanoparticles on smear layer removal efficacy and bond durability of PEEK posts to canal dentin

Year: 2025

Type: article

Abstract: • The cervical section of samples from Group 1 (2.5 % NaOCl+EDTA) showed the highest efficacy in eliminating SL and the Highest PBS score. • The apical third of canals disinfected in Group 3 (Radachlorin+ EDTA) demonstrated the lowest findings of bond integrity and SL efficacy removal. Effect of post-space disinfectants Nd: YAP laser, Radachlorin® photosensitizer, and calcium oxide nanoparticles (CaONPs) on the smear layer (SL) removal efficacy and push out bond strength (PBS) of polyetheretherketone (PEEK) post to root dentin. Forty-four human premolars possessing a single root having a complete apex were acquired and endodontically treated. Gates glidden drills were used to prepare the post space. The teeth were then randomly allocated into 4 groups according to the disinfectant used ( n = 11) Group 1: 2.5 % NaOCl+17 % EDTA, Group 2: Nd: YAP laser+17 % EDTA, Group 3: Radachlorin+17 % EDTA and Group 4: CaONPs+17 % EDTA. A single sample from each respective group was carefully sectioned and observed under SEM magnification for SL removal( n = 1). PEEK post was cemented using resin cement followed by artificial aging ( n = 10). PBS testing was conducted using a universal testing machine and failure mode was analyzed under a stereomicroscope. A one-way analysis of variance, accompanied by post hoc analysis was applied for statistical assessment of data (p < 0.05) The specimens from Group 1 (2.5 % NaOCl+EDTA) (1.65±0.02) showed the highest efficacy in eliminating SL from the canal as well as the highest PBS. Conversely, Group 3 (Radachlorin + EDTA) samples revealed the least efficacy in the removal of SL and bond integrity of PEEK post. Sodium hypochlorite followed by ethylenediamine-tetra acetic acid displayed better performance than all the other tested groups in SL removal and bond integrity outcomes when PEEK post was bonded to the canal dentin.

Source: Photodiagnosis and Photodynamic Therapy

DOI: 10.1016/j.pdpdt.2025.104610

Author: Saad Alresayes

Institution: King Saud University

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: $2,610