Full‐mouth rehabilitation in a completely digital workflow using partially adhesive monolithic zirconia restorations

Luna-Domínguez, Carlos Roberto; Luna-Domínguez, Jorge Humberto; Blatz, Markus B.

doi:10.1111/jerd.13048

Cited by 4 publications

(1 citation statement)

References 26 publications

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“…For 30 years, the use of stabilized zirconia as a dental material with excellent mechanical results (hardness and resistance to fracture) has been reported, however, it presents a high opacity limitation, which is why it has been used for crown structures and fixed dental prostheses, which are covered with translucent porcelain, in a similar way to what is reported in the literature for traditional porcelain fused to metal restorations. However, in these modifications, chipping, and fracture, associated with the residual thermal stresses produced by the manufacturing process, are the main technical limitations reported (Luna-Domínguez et al, 2023).…”

Section: Introductionmentioning

confidence: 99%

Microstructural and grain size analysis of zirconium materials for dental prostheses restoration

Rivas,

Domínguez,

Martínez

2024

JER

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Zirconia is a ceramic material with great potential in the biomedical field, it shows properties such as biocompatibility, low reactivity, and optical qualities. Its use as a dental material has been reported with excellent mechanical results, however it presents a high opacity limitation. A characterization of the microstructure was carried out with SEM on Zr specimens thermally etched at 1200°C, using a curing and cooling speed of 10°C/ min. The average grain size was measured from the 10,000x micrographs using the linear intercept method in ImageTool software. The microstructure of the zirconium materials was obtained through micrography. The relationship between the modifier content and the crystallographic phase with the grain size was identified; according to the linear intersection method, there is a relationship between the modification and the reported grain size. Simplifying design, manufacturing, and aesthetics with digital developments in complex restorations, improves monolithic ceramic restorations. Increasing the amount of Y 2 O 3 results in a higher cubic phase content and a larger grain size and reduces light scattering.

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Section: Introductionmentioning

confidence: 99%

Microstructural and grain size analysis of zirconium materials for dental prostheses restoration

Rivas,

Domínguez,

Martínez

2024

JER

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Randomized clinical trial of zirconia laminate veneers sintered by using conventional versus speed process: 1-year follow-up

Yousry,

Hammad,

El Halawani

et al. 2024

The Journal of Prosthetic Dentistry

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Effect of preparation design and endodontic access on fracture resistance of zirconia overlays in mandibular molars: An in vitro study

Jurado,

Afrashtehfar,

Robles

et al. 2024

Journal of Prosthodontics

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PurposeTo evaluate the fracture resistance of zirconia overlays, considering various preparation designs and the presence of endodontic access.Materials and MethodsNinety translucent zirconia (5Y‐PSZ) overlay restorations were divided into six groups (n = 15/group) based on different preparation designs, with and without endodontic access: chamfer margin 4 mm above the gingival level without (group 1) and with endodontic access (group 2); margin 2 mm above the gingival level without (group 3) and with endodontic access (group 4); overlay with no chamfer margin without (group 5) and with endodontic access (group 6). Restorations were bonded to mandibular first molar resin dies, and the groups with endodontic access were sealed with flowable resin composite. All restorations underwent 100,000 cycles of thermal cycling between 5°C and 55°C, followed by loading until fracture. Maximum load and fracture resistance were recorded. ANOVA with Tukey post‐hoc tests were used for statistical comparison (α < 0.05).ResultsFracture resistance significantly varied among overlay designs with and without endodontic access (p < 0.001), except for the no‐margin overlays (groups 5 and 6). Overlays with a 2 mm margin above the gingival margin with endodontic access (group 4) exhibited significantly higher fracture resistance compared to both the 4‐mm supragingival (group 2) and no‐margin (group 6) designs, even when compared to their respective intact groups (groups 1 and 5). There were no significant differences between the no‐margin and 4‐mm supragingival overlays.ConclusionThe more extensive zirconia overlay for mandibular molars is the first choice since the 2 mm margin above the gingival level design withstood considerable loads even after undergoing endodontic access. A no‐margin overlay is preferred over the 4‐mm supragingival design as it preserves more tooth structure and there was no outcome difference, irrespective of endodontic access. Caution is warranted in interpreting these findings due to the in vitro nature of the study.

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Full‐mouth rehabilitation in a completely digital workflow using partially adhesive monolithic zirconia restorations

Cited by 4 publications

References 26 publications

Microstructural and grain size analysis of zirconium materials for dental prostheses restoration

Microstructural and grain size analysis of zirconium materials for dental prostheses restoration

Randomized clinical trial of zirconia laminate veneers sintered by using conventional versus speed process: 1-year follow-up

Effect of preparation design and endodontic access on fracture resistance of zirconia overlays in mandibular molars: An in vitro study

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