Evaluation of marginal and internal gap under model-free monolithic zirconia restoration fabricated by digital intraoral scanner / 대한치과보철학회지
The Journal of Korean Academy of Prosthodontics
;
: 210-217, 2016.
Artículo
en Coreano
| WPRIM
| ID: wpr-195080
ABSTRACT
PURPOSE:
The aim of this study was to evaluate the marginal and internal adaptation of monolithic zirconia restoration made without physical model by digital intraoral scanner. MATERIALS ANDMETHODS:
A prospective clinical trial was performed on 11 restorations as a pilot study. The monolithic zirconia restorations were fabricated after digital intraoral impression taking by intraoral scanner (TRIOS, 3shape, Copenhagen, Denmark), computer-aided designing, and milling manufacturing process. Completed zirconia crowns were tried in the patients' mouth and a replica technique was used to acquire the crown-abutment replica. The absolute marginal discrepancy, marginal gap, and internal gap of axial, line angle, and occlusal part were measured after sectioning the replica in the mesiodistal and buccolingual direction. Statistical analysis was performed using Kruskal-Wallis and Mann-Whitney U test (α=.05).RESULTS:
From the adaptation analysis by replica, the statistically significant difference was not found between mesiodistal and buccolingual sections (P>.05), but there was significant difference among the measurement location (P<.01). The amount of absolute marginal discrepancy was larger than those of marginal gap and internal gap (P<.01).CONCLUSION:
Within the limitations of this study, the adaptation accuracy of model-free monolithic zirconia restoration fabricated by intraoral scanner exhibited clinically acceptable result. However, the margin of zirconia crown showed tendency of overcontour and cautious clinical application and follow up is necessary.
Texto completo:
Disponible
Índice:
WPRIM (Pacífico Occidental)
Asunto principal:
Proyectos Piloto
/
Estudios Prospectivos
/
Estudios de Seguimiento
/
Técnicas de Réplica
/
Diseño Asistido por Computadora
/
Coronas
/
Boca
Tipo de estudio:
Estudio observacional
/
Estudio pronóstico
Idioma:
Coreano
Revista:
The Journal of Korean Academy of Prosthodontics
Año:
2016
Tipo del documento:
Artículo
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