10.9-year survival of pressed acid etched monolithic e.max lithium disilicate glass-ceramic partial coverage restorations: Performance and outcomes as a function of tooth position, age, sex, and the type of partial coverage restoration (inlay or onlay)
| Autor: | Wael Att, Mariam Margvelashvili-Malament, Kenneth A. Malament, Dianne Rekow, Zuhair S. Natto, Van P. Thompson |
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| Rok vydání: | 2021 |
| Předmět: |
Adult
Male Ceramics Dentistry Young Adult 03 medical and health sciences 0302 clinical medicine Dental porcelain Time at risk Statistical significance Humans Medicine Dental Restoration Failure Survival analysis Aged Aged 80 and over Inlay business.industry 030206 dentistry Middle Aged Dental Porcelain Log-rank test Dental arch medicine.anatomical_structure Inlays Private practice Female Oral Surgery business |
| Zdroj: | The Journal of Prosthetic Dentistry. 126:523-532 |
| ISSN: | 0022-3913 |
| Popis: | STATEMENT OF PROBLEM Long-term clinical data on the survival of pressed lithium disilicate glass-ceramic when used with partial coverage restorations and the effect that different technical and clinical variables have on survival are sparse. PURPOSE The purpose of this clinical study was to determine the 10.9-year survival of pressed lithium disilicate glass-ceramic partial coverage restorations and associated clinical parameters on outcomes. MATERIAL AND METHODS Individuals requiring single unit defect-specific partial coverage restorations in any area of the mouth were recruited in a clinical private practice. Participants were offered the options of partial coverage cast gold or glass-ceramic (lithium disilicate) restorations. Only participants that chose glass-ceramic partial coverage restorations were included in the study. The overall survival of the glass-ceramic restorations was assessed by the clinical factors (participant's age, sex, dental arch, tooth position in dental arch, type of partial coverage restoration, and ceramic thickness) determined at recall. The effect of this clinical parameters was evaluated by using Kaplan-Meier survival curves accounting for attrition bias and other reasons for failure. The statistical significance of differences between parameters was determined by using the log rank test (α=.05). RESULTS A total of 304 participants requiring 556 lithium disilicate restorations were evaluated. The mean age for the participant at the time of restoration placement was 62 with a range of 20 to 99 years, 120 were men and 184 were women. A total of 6 failures (bulk fracture or large chip) requiring replacement were recorded with the average time to failure of 2.4 (0.8-9.2) years. The total time at risk computed for these units was 1978.9 years providing an estimated failure risk of 0.3% per year. The 10-year estimated cumulative survival was 95.6%. The estimated cumulative survival of inlays (n=246) and onlays (n=305) were 93.9% and 98.3%, at 9.9 and 9.8 years, respectively (P |
| Databáze: | OpenAIRE |
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