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- Title
Evaluation of Er:YAG and Er,Cr:YSGG lasers on intraradicular bonding using modified glass fiber tips.
- Authors
SIPPUS, Jaana Hannele; STAPE, Thiago Henrique Scarabello; TEZVERGIL-MUTLUAY, Arzu
- Abstract
The aim of this study was to determine whether erbium laser irradiation emitted by modified glass-fiber tips would improve the intraradicular bonding of fiber posts. Forty human canines were endodontically treated and prepared for fiber-post placement. Roots were divided into five groups (n=8); according to the laser-tip combinations (2,940 nm Er:YAG and 2,780 nm Er,Cr:YSGG). Nonirradiated root canals served as control. Posts were cemented with self-adhesive resin cement and subjected to push-out test. Failure modes were characterized, and intraradicular bonded interfaces were analyzed by SEM and submitted to nanoleakage evaluation. Data were analyzed by two-way ANOVA and Tukey test (a=0.05). No significant differences were observed in cervical and middle sections (p>0.05), while significantly higher bond strengths were observed in apical sections (p<0.05). Laser irradiation reduced adhesive failures, cement-dentin gap formation, and nanoleakage apically. Laser-irradiation protocols employing end- or radial-firing tips improved bonding to apical intraradicular dentin contributing to more uniform bonded interfaces.
- Subjects
GLASS fibers; LASERS; FAILURE mode &; effects analysis; TWO-way analysis of variance; DENTAL pulp cavities; DENTAL glass ionomer cements
- Publication
Dental Materials Journal, 2023, Vol 42, Issue 6, p766
- ISSN
0287-4547
- Publication type
Article
- DOI
10.4012/dmj.2023-025