Effect of pontic framework design on the fracture resistance of implant-supported all-ceramic fixed partial dentures
J. appl. oral sci
;
17(5): 533-538, Sept.-Oct. 2009. ilus, tab
Artículo
en Inglés
| LILACS
| ID: lil-531409
ABSTRACT
OBJECTIVE:
The purpose of this study was to compare the fracture resistance of implant-supported all-ceramic fixed partial dentures, which have three different pontic designs. MATERIAL ANDMETHODS:
Two implants were placed in a metal model simulating mandibular left second premolar and mandibular left second molar. Thirty standardized 3-unit all-ceramic fixed partial dentures with biconvex, convex or concave pontic designs were fabricated using IPS e.max system (n=10). Afterwards, specimens were centrally loaded on the pontics until failure with a universal testing machine. Results were analyzed by Kruskal-Wallis and Mann-Whitney U tests at 5 percent significance level.RESULTS:
The fracture resistance values of all-ceramic fixed partial dentures designed with biconvex, convex or concave pontics were 349.71, 438.20 and 300.78 N, respectively. There were no statistically significant differences between the fracture resistances of the groups (p>0.05), except for convex and concave groups (p<0.05 and p=0.009, respectively).CONCLUSIONS:
Convex design showed the best mechanical properties as demonstrated by the high values of fracture resistance.
Texto completo:
Disponible
Índice:
LILACS (Américas)
Asunto principal:
Pilares Dentales
/
Diseño de Prótesis Dental
/
Prótesis Dental de Soporte Implantado
/
Fracaso de la Restauración Dental
/
Porcelana Dental
/
Dentadura Parcial Fija
Límite:
Humanos
Idioma:
Inglés
Revista:
J. appl. oral sci
Asunto de la revista:
Odontología
Año:
2009
Tipo del documento:
Artículo
País de afiliación:
Turquía
Institución/País de afiliación:
University of Gaziantep/TR
/
University of Selcuk/TR
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