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Early complications and performance of 327 heat-pressed lithium disilicate crowns up to five years
The Journal of Advanced Prosthodontics ; : 194-200, 2016.
Artículo en Inglés | WPRIM | ID: wpr-153888
ABSTRACT

PURPOSE:

The prospective follow-up aimed to assess the performance of lithium disilicate crowns and clinical reasons of adverse events compromising survival and quality. MATERIALS AND

METHODS:

58 patients were treated with 375 heat-pressed monolithic crowns, which were bonded with resin cement. Annual recalls up to five years included a complete dental examination as well as quality assessment using CDA-criteria. Any need for clinical intervention led to higher complication rate and any failure compromised the survival rate. Kaplan-Meier-method was applied to all crowns and a dataset containing one randomly selected crown from each patient.

RESULTS:

Due to drop-outs, 45 patients (31 females, 14 males) with the average age of 43 years (range = 17–73) who had 327 crowns (176 anterior, 151 posterior; 203 upper jaw, 124 lower jaw) were observed and evaluated for between 4 and 51 months (median = 28). Observation revealed 4 chippings, 3 losses of retention, 3 fractures, 3 secondary caries, 1 endodontic problem, and 1 tooth fracture. Four crowns had to be removed. Survival and complication rate was estimated 98.2% and 5.4% at 24 months, and 96.8% and 7.1% at 48 months. The complication rate was significantly higher for root canal treated teeth (12%, P<.01) at 24 months. At the last observation, over 90% of all crowns showed excellent ratings (CDA-rating Alfa) for color, marginal fit, and caries.

CONCLUSION:

Heat pressed lithium disilicate crowns showed an excellent performance. Besides a careful luting, dentists should be aware of patients' biological prerequisites (grade of caries, oral hygiene) to reach full success with these crowns.
Asunto(s)

Texto completo: Disponible Índice: WPRIM (Pacífico Occidental) Asunto principal: Diente / Fracturas de los Dientes / Análisis de Supervivencia / Tasa de Supervivencia / Estudios Prospectivos / Estudios de Seguimiento / Recubrimiento Dental Adhesivo / Adaptación Marginal Dental / Cementos de Resina / Fracaso de la Restauración Dental Tipo de estudio: Estudio observacional / Estudio pronóstico Límite: Femenino / Humanos Idioma: Inglés Revista: The Journal of Advanced Prosthodontics Año: 2016 Tipo del documento: Artículo

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Texto completo: Disponible Índice: WPRIM (Pacífico Occidental) Asunto principal: Diente / Fracturas de los Dientes / Análisis de Supervivencia / Tasa de Supervivencia / Estudios Prospectivos / Estudios de Seguimiento / Recubrimiento Dental Adhesivo / Adaptación Marginal Dental / Cementos de Resina / Fracaso de la Restauración Dental Tipo de estudio: Estudio observacional / Estudio pronóstico Límite: Femenino / Humanos Idioma: Inglés Revista: The Journal of Advanced Prosthodontics Año: 2016 Tipo del documento: Artículo