Detorque values of abutment screws in a multiple implant-supported prosthesis / 대한치과보철학회지
The Journal of Korean Academy of Prosthodontics
;
: 280-286, 2010.
Artículo
en Coreano
| WPRIM
| ID: wpr-210774
ABSTRACT
PURPOSE:
This study evaluated the detorque values of screws in a multiple implant-supported superstructure using stone casts made with 2 different impression techniques. MATERIAL ANDMETHODS:
A fully edentulous mandibular master model and a metal framework directly connected to four implants (Branemark System(R); Nobel Biocare AB) with a passive fit to each other were fabricated. Six experimental stone casts (Group 1) were made with 6 non-splinted impressions on a master cast and another 6 experimental casts (Group 2) were made with 6 acrylic resin splinted impressions. The detorque values of screws (TorqTite(R) GoldAdapt Abutment Screw; Nobel Biocare AB) were measured twice after the metal framework was fastened onto each experimental stone cast with 20 Ncm torque. Detorque values were analyzed using the mixed model with the fixed effect of screw and reading and the random effect of model for the repeated measured data at a .05 level of significance.RESULTS:
The mean detorque values were 7.9 Ncm (Group 1) and 8.1 Ncm (Group 2), and the mean of minimum detorque values were 6.1 Ncm (Group 1) and 6.5 Ncm (Group 2). No statistically significant differences between 2 groups were found and no statistically significant differences among 4 screws were found for detorque values. No statistically significant differences between 2 groups were also found for minimum detorque values.CONCLUSION:
In a multiple external hexagon implant-supported prosthesis, no significant differences between 2 groups were found for detorque values and for minimum detorque values. There seems to be no significant differences in screw joint stability between 2 stone cast groups made with 2 different impression techniques.
Texto completo:
Disponible
Índice:
WPRIM (Pacífico Occidental)
Asunto principal:
Prótesis e Implantes
/
Férulas (Fijadores)
/
Torque
/
Articulaciones
Idioma:
Coreano
Revista:
The Journal of Korean Academy of Prosthodontics
Año:
2010
Tipo del documento:
Artículo
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