Different fabrication techniques of implant-supported prostheses: microhardness and fracture strength
Braz. j. oral sci
; 18: e191573, jan.-dez. 2019. ilus
Article
ي En
| LILACS, BBO
| ID: biblio-1095166
المكتبة المسؤولة:
BR218.1
ABSTRACT
Aim:
This study evaluated the mechanical behavior of implant-supported crowns obtained by different fabrication technique after thermomechanical cycling.Methods:
Thirty-two external hexagon dental implants were divided into four groups (n=10) CC conventional casting with torch; EI electromagnetic induction casting; PL plasma casting; and CAD-CAM milling through computer-aided design and computer-aided manufacturing. Vickers microhardness of the specimens were made before and after the thermomechanical cycling, and then subjected to fracture load. Fracture pattern was evaluated.Results:
No significant difference was observed comparing the microhardness before and after thermomechanical cycling. CAD-CAM group presented significant lower microhardness than the other groups. No significant statistical difference was showed on fracture load between the groups. The CAD-CAM and PL presented lower number of failure by plastic deformation.Conclusion:
The manufacturing techniques affected the mechanical behavior and the failure pattern of implant-supported crowns testedKey words
النص الكامل:
1
الفهرس:
LILACS
الموضوع الرئيسي:
Prosthodontics
/
Dental Implants
/
Computer-Aided Design
اللغة:
En
مجلة:
Braz. j. oral sci
موضوع المجلة:
ODONTOLOGIA
السنة:
2019
نوع:
Article