Back to Search
Start Over
Aging Methods—An Evaluation of Their Influence on Bond Strength
- Source :
- European Journal of Dentistry
- Publication Year :
- 2021
- Publisher :
- Georg Thieme Verlag KG, 2021.
-
Abstract
- Objectives To evaluate the effect of different artificial aging methods on the bond strength of a resin composite associated with a universal adhesive (Scotchbond Universal) used under two etching approaches (self-etch [SE] or etch-and-rinse [ER]) to enamel and dentin substrates. Materials and Methods A total of 96 noncarious human third molars were prepared and randomly divided according to three factors (n = 6): substrate (enamel and dentin), adhesive approach (SE and ER), and aging method (water storage for 24 hours, 6 months, or 1 year; subjected to 10,000, 20,000, or 30,000 thermal cycles; and sodium hypochlorite [NaOCl] storage for 1 or 5 hours). Statistical Analysis Microshear bond strength tests were conducted, and the collected data (MPa) were subjected to three-way analysis of variance (ANOVA) with post hoc Bonferroni tests (p < 0.05) and Weibull analysis. The failure pattern was also evaluated. Results Three-way ANOVA revealed that the factors “substrate” (p = 0.00) and “aging method” (p = 0.00) had a significant effect on the bond strength, but the factor “adhesive approach” did not (p = 0.84). The bond strength in the enamel group for the SE approach was negatively affected under 20,000 and 30,000 thermal cycles. Weibull presented the highest m in the NaOCl storage for the 5 hours group to enamel using the SE and to dentin using ER approaches. Adhesive/mixed failures were predominant for all groups. Conclusion Thermocycling aging (20,000 and 30,000 cycles) significantly reduced the bond strength to enamel using the SE approach. On the contrary, storage with the NaOCl method proved to increase bond strength under the evaluated conditions.
- Subjects :
- Molar
Materials science
Post hoc
Resin composite
0206 medical engineering
02 engineering and technology
03 medical and health sciences
chemistry.chemical_compound
universal adhesive
0302 clinical medicine
stomatognathic system
Dentin
medicine
Composite material
General Dentistry
Enamel paint
Bond strength
030206 dentistry
020601 biomedical engineering
artificial aging
medicine.anatomical_structure
hydrolysis
chemistry
Sodium hypochlorite
visual_art
visual_art.visual_art_medium
Original Article
Adhesive
interface degradation
Subjects
Details
- ISSN :
- 13057464 and 13057456
- Volume :
- 15
- Database :
- OpenAIRE
- Journal :
- European Journal of Dentistry
- Accession number :
- edsair.doi.dedup.....7911938ac424d4e3e205480436b6b180