The International journal of prosthodontics · 2013
Survival rates of a lithium disilicate-based core ceramic for three-unit esthetic fixed partial dentures: a 10-year prospective study.
Сравнительное исследованиеСтатьяНазвание и аннотация: Перевод пока не подготовлен
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Solá-Ruiz M Fernanda, Lagos-Flores Elena, Román-Rodriguez Juan Luis, Highsmith Jaime Del Rio, Fons-Font Antonio, Granell-Ruiz Maria
Аннотация
PURPOSE: The aim of this prospective study was to evaluate the clinical efficacy and long-term survival rate of three-unit fixed partial dentures (FPDs) made from lithium disilicate-based core ceramic.
MATERIALS AND METHODS: Twenty-one three-unit FPDs were placed in 19 patients to replace single lost teeth in the esthetic area, following a study protocol that took clinical, esthetic, and radiologic aspects into consideration. Each case was reviewed at 1 week following placement, at 6 months, and then annually for 10 years. Statistical analysis was performed using Kaplan-Meier survival analysis.
RESULTS: Out of the 19 patients, 14.3% presented reversible postoperative sensitivity. Recession was observed in 24% of dental posts, and 7.1% presented marginal discoloration. Treatment did not increase either Bleeding or Plaque Index scores at prepared teeth; secondary caries did not appear either. The restorations' survival rate at the 10-year follow-up was 71.4%; six FPDs had fractured and one debonded.
CONCLUSIONS: Fracture failure rate was 28.6% after 10 years; a high percentage corresponded to connector fractures and occurred during the first 5 years. Lithium disilicate glass-ceramic FPDs present a higher risk of fracture than standard therapies (metal-ceramic) or other more recently developed ceramic materials. The prognosis for survival improves for Class I occlusion and nonparafunctional patients.
MATERIALS AND METHODS: Twenty-one three-unit FPDs were placed in 19 patients to replace single lost teeth in the esthetic area, following a study protocol that took clinical, esthetic, and radiologic aspects into consideration. Each case was reviewed at 1 week following placement, at 6 months, and then annually for 10 years. Statistical analysis was performed using Kaplan-Meier survival analysis.
RESULTS: Out of the 19 patients, 14.3% presented reversible postoperative sensitivity. Recession was observed in 24% of dental posts, and 7.1% presented marginal discoloration. Treatment did not increase either Bleeding or Plaque Index scores at prepared teeth; secondary caries did not appear either. The restorations' survival rate at the 10-year follow-up was 71.4%; six FPDs had fractured and one debonded.
CONCLUSIONS: Fracture failure rate was 28.6% after 10 years; a high percentage corresponded to connector fractures and occurred during the first 5 years. Lithium disilicate glass-ceramic FPDs present a higher risk of fracture than standard therapies (metal-ceramic) or other more recently developed ceramic materials. The prognosis for survival improves for Class I occlusion and nonparafunctional patients.
Предметные рубрики MeSH
CeramicsColorDental AbutmentsDental BondingDental CariesDental Plaque IndexDental PorcelainDental Restoration FailureDentin SensitivityDenture DesignDenture, Partial, FixedEsthetics, DentalFemaleFollow-Up StudiesGingival RecessionHumansLithium CompoundsLongitudinal StudiesMaleMiddle AgedPeriodontal IndexProspective StudiesSurface PropertiesSurvival AnalysisTooth Preparation, ProsthodonticTreatment Outcome