Evaluating the Impact of Oxidation Heat Treatment and Dual Opaquing Techniques on Enhancing Metal-Ceramic Bond Strength.
| Autor: | Rajput S; Prosthodontics and Implantology, Guru Gobind Singh Dental College and Research Centre, Burhanpur, IND., Raul S; Prosthodontics, Guru Gobind Singh Dental College and Research Centre, Burhanpur, IND., Dhopte A; Oral Medicine and Radiology, Chhattisgarh Dental College and Research Institute, Rajnandgaon, IND., Kavitha C; Prosthodontics and Crown Bridge, Mamata Dental College and Hospital, Khammam, IND., Hegde P; Conservative Dentistry and Endodontics, School of Dentistry, DY Patil University, Navi Mumbai, IND., Bhatt S; Oral and Maxillofacial Surgery, Rajasthan Dental College and Hospital, Jaipur, IND. |
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| Jazyk: | angličtina |
| Zdroj: | Cureus [Cureus] 2024 Sep 04; Vol. 16 (9), pp. e68678. Date of Electronic Publication: 2024 Sep 04 (Print Publication: 2024). |
| DOI: | 10.7759/cureus.68678 |
| Abstrakt: | Background: This research aims to assess the impact of oxidation heat treatment (OHT) and dual opaquing techniques on enhancing the bond strength between metal and ceramic. Material and Method: Eighty rectangular patterns with dimensions of 0.5x3x25 mm (according to ISO 9693-2012) were fabricated in a custom-made silicon mold by using auto-polymerized pattern resin material. These rectangular patterns were cast using base metal alloys. The samples were split into two primary groups: group A, subjected to OHT, and group B, without oxidation treatment. Each primary group was then split up into subgroups according to the application of single layers (group A1, B1) or double layers (group A2, B2) of opaque porcelain. After pre-surface treatment and Ceramco 3 paste opaque application, dentin porcelain (Ceramco 3) was applied to the mid-region of the samples, followed by firing to achieve a standardized thickness. Flexural strength determination was conducted via a three-point bend test performed on the universal testing machine (UTM) (Instron Corp., Model 2519-107, USA), adhering to ISO standard 9693. Post-testing failure types were analyzed by morphological assessment of debonding surfaces via a scanning electron microscope (SEM). The statistical analysis was performed with SPSS version 16, incorporating ANOVA for intergroup analysis and independent t-tests for intragroup comparisons. Results: Group A2 exhibited the highest mean flexural bond strength (P<0.05) at 41.85 MPa when compared to group A1 at 37.60 MPa, group B2 at 35.47 MPa, and group B1 with the least mean flexural bond strength at 30.41 MPa. SEM observations revealed cohesive bond failure for groups A1, A2, and B2 and adhesive bond failure for groups B1. Conclusion: It is evident that OHT and opaquing technique are important factors in determining the bond strength of ceramo-metal restorations. When combined, these techniques greatly increase the overall success and durability of metal-ceramic restorations, underscoring their significance in contemporary dental prostheses. Competing Interests: Human subjects: All authors have confirmed that this study did not involve human participants or tissue. Animal subjects: All authors have confirmed that this study did not involve animal subjects or tissue. Conflicts of interest: In compliance with the ICMJE uniform disclosure form, all authors declare the following: Payment/services info: All authors have declared that no financial support was received from any organization for the submitted work. Financial relationships: All authors have declared that they have no financial relationships at present or within the previous three years with any organizations that might have an interest in the submitted work. Other relationships: All authors have declared that there are no other relationships or activities that could appear to have influenced the submitted work. (Copyright © 2024, Rajput et al.) |
| Databáze: | MEDLINE |
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