Résumé
Objectives: The aim of this study was to determine the clinical outcomes and predictors of satisfaction in patients with lithium disilicate [LD] ceramic crowns
Subjects and Methods: Clinical outcomes were assessed in 47 patients with 88 LD crowns using modified United States Public Health Service [USPHS] evaluation criteria and survival rates. The questionnaire for predictors included 3 aspects: [a] sociodemographic characteristics, [b] oral health habits [tooth brushing frequency, flossing frequency, and dental visits], and [c] satisfaction of the restorations [aesthetics, function, fit, cleansability, and chewing ability of the crowns, and overall satisfaction]. Frequency distributions were computed using univariate and multivariate analysis. The Student t test and analysis of variance [ANOVA] were used to compare means across variables. Correlation analysis was done to assess the association between continuous variables
Results: The age of crowns was 34.7 +/- 9.7 months. The survival rate was 96.6% at 35.9 +/- 9.2 months. There was a significant association between successful crown function and oral hygiene measures: tooth brushing [ p < 0.001], dental visits [ p = 0.006], and flossing [ p = 0.009]. A strong negative correlation was observed between aesthetic satisfaction [ r = -0.717, p < 0.001] and chewing ability [ r = -0.639, p < 0.001] with crown age. The linear regression model was significant for all predictors [ p < 0.05] except overall satisfaction [ p > 0.05]
Conclusion: The LD crowns had long survival rates of 96.6% up to 35.9 +/- 9.2 months and provided satisfactory clinical performance [low risk of failure]. Oral hygiene habits such as brushing, flossing, and regular dental visits influenced patient satisfaction with LD crowns