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Biomedical subjects

G Zarb

Publications and source records attributed to G Zarb.

8 recordsLinked to original sources
PubMed1992

Comparative accuracy of implant impression procedures.

In this study, four impression procedures were assessed for accuracy in a laboratory model that simulated clinical practice. The accuracy of stone casts with brass implant analogs was measured against a standard framework. The fit of the framework on the casts was tested by manual and visual judgment and by microscopic measurement. The measurements supported the clinical judgments. When acrylic resin was used to splint transfer copings in an impression, all casts were acceptable and were more accurate than the best of the two other procedures, which did not use an acrylic resin splint. When an impression material was used to orient the transfer copings, the accuracy was better if undercut copings remained in the impression. When impressions were made by removing an impression from smooth transfer copings and replacing the copings in the impression, the majority of casts were unacceptable.

Analysis of Variance↗
PubMed1988

A 10-year follow-up study of the masticatory system after treatment with osseointegrated implant bridges.

Twenty-one patients with osseointegrated implant bridges (OIB), with an average age of 65 yr, were functionally examined at a 10-yr follow-up. Altogether 27 OIBs, supported by 138 fixtures, were examined. The examination comprised an anamnestic and clinical examination and registration of bite force. 90% of the patients were very satisfied with the outcome of the treatment. According to the anamnestic dysfunction index (Ai), 80% of the patients were symptom free in their masticatory system. The occlusal state was found to be good. Seventy-five percent of the patients were found to have only mild dysfunction of their masticatory system or to be symptomless according to the clinical dysfunction index (Di). The bite force ranged from 3 to 118 N at gentle biting, from 25 to 250 N at "biting as when chewing" and from 77.5 to 495.5 N at maximal bite force. On average the bite force had improved significantly at all bite-force levels tested compared to an examination 10 yr earlier. It is concluded that oral function in patients with OIBs is very favorable.

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