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
Artigo
em Inglês
| 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:
DisponíveL
Índice:
LILACS (Américas)
Assunto principal:
Dente Suporte
/
Planejamento de Prótese Dentária
/
Prótese Dentária Fixada por Implante
/
Falha de Restauração Dentária
/
Porcelana Dentária
/
Prótese Parcial Fixa
Limite:
Humanos
Idioma:
Inglês
Revista:
J. appl. oral sci
Assunto da revista:
Odontologia
Ano de publicação:
2009
Tipo de documento:
Artigo
País de afiliação:
Turquia
Instituição/País de afiliação:
University of Gaziantep/TR
/
University of Selcuk/TR
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