Evaluation of biogeneric design techniques with CEREC CAD/CAM system
The Journal of Advanced Prosthodontics
;
: 431-436, 2015.
Artículo
en Inglés
| WPRIM
| ID: wpr-60631
ABSTRACT
PURPOSE:
The aim of this study was to evaluate occlusal contacts generated by 3 different biogeneric design modes (individual (BI), copy (BC), reference (BR)) of CEREC software and to assess the designs subjectively. MATERIALS ANDMETHODS:
Ten pairs of maxillary and mandibular casts were obtained from full dentate individuals. Gypsum cast contacts were quantified with articulating paper and digital impressions were taken. Then, all ceramic crown preparation was performed on the left first molar teeth and digital impressions of prepared teeth were made. BI, BC, and BR crowns were designed. Occlusal images of designs including occlusal contacts were superimposed on the gypsum cast images and corresponding contacts were determined. Three designs were evaluated by the students.RESULTS:
The results of the study revealed that there was significant difference among the number of contacts of gypsum cast and digital models (P<.05). The comparison of the percentage of virtual contacts of three crown designs which were identical to the contacts of original gypsum cast revealed that BI and BR designs showed significantly higher percentages of identical contacts compared with BC design (P<.05). Subjective assessment revealed that students generally found BI designs and BR designs natural regarding naturalness of fissure morphology and cusp shape and cusp tip position. For general occlusal morphology, student groups generally found BI design "too strong" or "perfect", BC design "too weak", and BR design "perfect".CONCLUSION:
On a prepared tooth, three different biogeneric design modes of a CAD/CAM software reveals different crown designs regarding occlusal contacts and morphology.
Texto completo:
Disponible
Índice:
WPRIM (Pacífico Occidental)
Asunto principal:
Diente
/
Sulfato de Calcio
/
Cerámica
/
Diseño de Prótesis Dental
/
Coronas
/
Oclusión Dental
/
Diente Molar
Límite:
Humanos
Idioma:
Inglés
Revista:
The Journal of Advanced Prosthodontics
Año:
2015
Tipo del documento:
Artículo
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