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Volume 9 , Issue 5
September/October 1994

Pages 513-521

Functional State of Edentulous Patients With Implant-Supported Fixed Prostheses and Implant-Retained Overdentures: Preliminary Results

Jörg R. Strub, DMD, PhD/Themistoklis Mylonas, DMD/Thomas Beyer, DMD/Dieter Weingart, DMD, PhD

This clinical functional state report involved 20 patients, edentulous at least in one jaw. Ten patients were provided with implant-supported fixed prostheses and 10 patients with implant-retained overdentures. After an average observation period of 8.4 months, the patients’ individual degree of satisfaction with the treatment was determined through the use of a questionnaire. In addition, a clinical examination was performed, the dysfunction index (Helkimo) was determined, and border movements and chewing patterns were recorded by using an optoelectronic jaw tracking system (Jaws 3D). The data were compared with a control group having natural dentition. The subjective assessment showed that none of the patients had any complaints. Both test groups showed higher Helkimo index values than the control group. The evaluation of the movement patterns of the overdenture group showed significantly different values than the control group regarding the chewing cycle duration, velocity of chewing, and maximal mouth opening capabilities. No significant differences were noted between the prosthesis group and the control group. (INT J ORAL MAXILLOFAC IMPLANTS 1994;9:513—521)

Key words: edentulism, functional state, implant retained overdentures, implant-supported fixed prostheses

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