AI Article Synopsis
- - The study assessed how different repair methods impact the bond strength and leakage of both non-aged and aged bulk-fill composites, involving 96 specimens divided into six treatment groups.
- - Results indicated that groups using silane showed better bond strength and less leakage, while adhesive-only repairs had poor performance, especially under aging conditions.
- - The findings suggest that incorporating silane is beneficial for composite repairs, especially when using diamond burs as the treatment method.
Article Abstract
Purpose: This study evaluated repair protocols of a non-aged and aged bulk-fill composite in terms of bond strength and leakage.
Materials And Methods: Ninety-six bulk-fill resin specimens were constructed; half were submitted to thermocycling. Specimens were divided into six groups (n = 16) according to the repair treatments: CG: no repair (control group); Ad: adhesive; DbAd: abrasion with diamond bur + adhesive; SbAd: sandblasting + adhesive; DbSiAd: abrasion with diamond bur + silane + adhesive; and SbSiAd: sandblasting + silane + adhesive. Resin blocks were bonded to the treated surfaces to simulate repair, and the specimens were submitted to microtensile bond strength testing. The failure area was evaluated under a stereomicroscope (40X magnification), and leakage after specimen immersion in silver nitrate solution for 24 h was evaluated under a microscope (200X magnification). Three-way ANOVA (surface treatment, chemical agent, aging) and Tukey's test were performed.
Results: Ad and DbAd groups showed the lowest bond strengths, while Ad was the only group negatively influenced by aging. The other groups were statistically similar to the CG in both conditions. All groups exhibited leakage, but groups without silane presented a greater percentage of leakage, mainly when diamond burs were used. Thermocycling did not influence leakage, nor did surface treatment in groups with silane.
Conclusion: For composite repair, the use of silane is recommended, mainly when diamond burs are used as a mechanical surface treatment.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.3290/j.ohpd.a45082 | DOI Listing |
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC11654506 | PMC |
Publication Analysis
Top Keywords
Similar Publications
In Situ Column Modification of Silica Monoliths With Pentafluorophenyl Ligands for the HPLC Separation of Eight Tocochromanols.
J Sep Sci
December 2024
Department of Chromatography and Mass Spectrometry, Institute of Horticulture, Dobele, Latvia.
Silica-based monoliths offer higher separation efficiency per unit pressure drop compared to particle-packed columns. Their application is limited by the commercial availability of different column chemistries. Pentafluorophenyl ligands enable hydrogen bonding, dipole-dipole, π-π, and hydrophobic interactions, facilitating the separation of various compounds.
View Article and Find Full Text PDFInfluence of surface pretreatment using cold-active atmospheric pressure plasma on bond strength of CAD-CAM-fabricated hybrid ceramic crowns: an in-vitro study.
Int J Implant Dent
December 2024
Department for Prosthetic Dentistry and Materials, University Medical Centre, Augustusplatz 2, 55131, Mainz, Germany.
Purpose: This study assesses the impact of Cold Atmospheric Pressure Plasma (CAP) pretreatment on the bond strength of two-piece hybrid ceramic abutment crowns in implant dentistry. The objective is to ascertain whether CAP can be employed as an alternative or complementary technique to conventional methods.
Methods: 80 titanium bases and 80 VITA ENAMIC polymer-infiltrated ceramic network (PICN) crowns were divided into 8 groups (n = 10) based on different surface pretreatments of the crowns before cementation: no treatment (A), hydrofluoric acid (HF) (B), HF and silane (C), silane (D), CAP (AP), HF and CAP (BP), HF, CAP, and silane (CP), and CAP and silane (DP).
Functional Group Effects on the Interfacial Adsorption of Arylquinoline-3-Carbonitriles on Iron: A DFT-D3 Investigation of Surface Interaction Mechanisms.
Langmuir
December 2024
Department of Architectural Engineering, Hanyang University ERICA, 55 Hanyangdaehak-ro, Sangrok-gu, Ansan-si 15588, Gyeonggi-do, Republic of Korea.
Reliable corrosion inhibition systems are crucial for extending the lifespan of industrial metal structures. Quinolines, with their high adsorption capacity and protective efficiency, are promising next-generation inhibitors. However, the impact of substitutions on their coordination with iron surfaces requires deeper understanding.
View Article and Find Full Text PDFScenario and Shooting Performance in Incumbent Deputy Sheriffs/Police Officers, Cadets, and Cadets Who Worked in Custody/Corrections Facilities.
J Strength Cond Res
December 2024
Training Division, Forsyth County Sheriff's Office, Cumming, Georgia.
Lockie, RG, Young, MA, Lanham, SN, Orr, RM, Dawes, JJ, and Nagel, TR. Scenario and shooting performance in incumbent deputy sheriffs/police officers, cadets, and cadets who worked in custody/corrections facilities. J Strength Cond Res XX(X): 000-000, 2024-Job-specific fitness of law enforcement personnel can decline during their careers.
View Article and Find Full Text PDFStrong and Tough Self-Healing Elastomers via BTA-Mediated Microstructure and Metal-ligand Coordination.
Macromol Rapid Commun
December 2024
Key Laboratory of Special Functional and Smart Polymer Materials of Ministry of Industry and Information Technology, School of Chemistry and Chemical Engineering, Northwestern Polytechnical University, Xi'an, 710072, China.
Creating elastomers with high strength, toughness, and rapid self-healing remains a key challenge. These seemingly contradictory properties require innovative design strategies. Herein, a novel approach is proposed by simultaneously incorporating a unique triple hydrogen bond unit, benzene-1,3,5-tricarboxamide (BTA), and imidazole-Zn dynamic coordination into the elastomer.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!