A comparison of the stress transfer characteristics of a dental implant with a rigid or a resilient internal element.
It has been suggested that there is a unique set of problems associated with joining an implant and a natural tooth with a fixed partial denture. The manufacturer of the IMZ implant system claims that this procedure can be accomplished successfully because of the planned stress-distributing characteristics of their resin internal (intramobile) element. This study compared the difference in the stress patterns generated in photoelastic plastic by an IMZ implant with a resilient or a rigid internal element. Under a standardized cantilever load, the stress patterns were photographed in the field of a circular polariscope. The total stress areas were calculated and a statistical comparison performed. The static load conditions of the model demonstrated no statistical difference between the area of stress pattern generated by an IMZ implant with or without a resilient internal element. Moreover, a single load produced the same deflection of the cantilever beam regardless of which element was interposed.
McGlumphy
E A
EA
Section of Restorative and Prosthetic Dentistry, Ohio State University, College of Dentistry, Columbus.
Campagni
W V
WV
Peterson
L J
LJ
D000539:Alveolar Process / Q000502:physiology; D003758:Dental Implantation, Endosseous; D015921:Dental Implants; D003799:Dental Stress Analysis; D003779:Denture Design; D004548:Elasticity; D006801:Humans; D008954:Models, Biological; D010519:Periodontium / Q000502:physiology; D011897:Random Allocation; D012117:Resins, Synthetic; D013314:Stress, Mechanical; D014025:Titanium
D015921:Dental Implants; D012117:Resins, Synthetic; D014025:Titanium