Three-Year Clinical Outcomes of Lithium Disilicate and Lithium-Silicate-Modified Zirconia Veneers and Partial-Coverage Restorations: A Retrospective Comparative Study.
- 1Department of Prosthodontics, University of Medicine and Pharmacy "Victor Babes", B-dul Revolutiei 1989, No. 9, 300580 Timisoara, Romania.
- 2TADERP Research Center, Department of Prosthodontics, University of Medicine and Pharmacy "Victor Babes", B-dul Revolutiei 1989, No. 9, 300580 Timisoara, Romania.
- 3University Clinic of Dentofacial Aesthetics, Faculty of Dental Medicine, University of Medicine and Pharmacy "Victor Babes", B-dul Revolutiei 1989, No. 9, 300580 Timisoara, Romania.
Abstract
Background: Clinical evidence regarding lithium-silicate-modified zirconia veneers and partial-coverage restorations remains limited. This retrospective study compared the observed three-year outcomes of two complete adhesive restorative protocols rather than the isolated effects of ceramic materials. Materials and Methods: One hundred ceramic veneers and partial-coverage restorations placed in eleven patients were evaluated after a three-year follow-up. Fifty restorations were fabricated from lithium disilicate (IPS e.max Press; Ivoclar Vivadent AG, Schaan, Liechtenstein), and fifty were fabricated from zirconia (Aidite Biomedical Co., Ltd., Qinhuangdao, China) treated with the Biomic LiSi Connect system. No patient received both protocols. Clinical records, photographic documentation, and recall examinations were reviewed for fractures, chipping, marginal discoloration, surface wear, secondary caries, hypersensitivity, repairs, replacements, and debonding. Outcomes were analyzed descriptively because multiple restorations were clustered within patients and protocol allocation followed clinical indication. Wilson 95% confidence intervals (CIs) were reported for restoration-level proportions as descriptive measures and were not adjusted for clustering. Results: Both protocols showed 100% survival without replacement (95% CI: 92.9-100.0%). Debonding affected 6/50 zirconia restorations (12%; 95% CI: 5.6-23.8%) and 0/50 lithium disilicate restorations (0%; 95% CI: 0.0-7.1%). The six events occurred in five of seven zirconia patients and none of four lithium disilicate patients. All debonded restorations were recemented and remained functional. No fractures, chipping events, repairs, or replacements were recorded. Conclusions: No replacement or structural failure was observed during three years in this selected convenience cohort. However, the zirconia protocol had six retention-related interventions. Because the protocols differed in material, surface treatment, cement, indication, and anatomical distribution, the findings are exploratory and do not establish an isolated material effect.
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BibTeX
@article{maroiu2026threeyear,
title = {{Three-Year Clinical Outcomes of Lithium Disilicate and Lithium-Silicate-Modified Zirconia Veneers and Partial-Coverage Restorations: A Retrospective Comparative Study.}},
author = {Alexandra Cristina Măroiu and Andrei-Bogdan Faur and Andra Ardelean and Marius Leretter and Anca Jivănescu},
journal = {Dentistry journal},
year = {2026},
month = sep,
doi = {10.3390/dj14100621},
url = {https://europepmc.org/article/MED/42930387},
note = {CC BY},
}
RIS
TY - JOUR
TI - Three-Year Clinical Outcomes of Lithium Disilicate and Lithium-Silicate-Modified Zirconia Veneers and Partial-Coverage Restorations: A Retrospective Comparative Study.
AU - Alexandra Cristina Măroiu
AU - Andrei-Bogdan Faur
AU - Andra Ardelean
AU - Marius Leretter
AU - Anca Jivănescu
PY - 2026
DA - 2026/09/26
JO - Dentistry journal
DO - 10.3390/dj14100621
UR - https://europepmc.org/article/MED/42930387
AB - Background: Clinical evidence regarding lithium-silicate-modified zirconia veneers and partial-coverage restorations remains limited. This retrospective study compared the observed three-year outcomes of two complete adhesive restorative protocols rather than the isolated effects of ceramic materials. Materials and Methods: One hundred ceramic veneers and partial-coverage restorations placed in eleven patients were evaluated after a three-year follow-up. Fifty restorations were fabricated from lithium disilicate (IPS e.max Press; Ivoclar Vivadent AG, Schaan, Liechtenstein), and fifty were fabricated from zirconia (Aidite Biomedical Co., Ltd., Qinhuangdao, China) treated with the Biomic LiSi Connect system. No patient received both protocols. Clinical records, photographic documentation, and recall examinations were reviewed for fractures, chipping, marginal discoloration, surface wear, secondary caries, hypersensitivity, repairs, replacements, and debonding. Outcomes were analyzed descriptively because multiple restorations were clustered within patients and protocol allocation followed clinical indication. Wilson 95% confidence intervals (CIs) were reported for restoration-level proportions as descriptive measures and were not adjusted for clustering. Results: Both protocols showed 100% survival without replacement (95% CI: 92.9-100.0%). Debonding affected 6/50 zirconia restorations (12%; 95% CI: 5.6-23.8%) and 0/50 lithium disilicate restorations (0%; 95% CI: 0.0-7.1%). The six events occurred in five of seven zirconia patients and none of four lithium disilicate patients. All debonded restorations were recemented and remained functional. No fractures, chipping events, repairs, or replacements were recorded. Conclusions: No replacement or structural failure was observed during three years in this selected convenience cohort. However, the zirconia protocol had six retention-related interventions. Because the protocols differed in material, surface treatment, cement, indication, and anatomical distribution, the findings are exploratory and do not establish an isolated material effect.
SN - 2304-6767
ER -