A photogrammetric method for monitoring changes in the residual alveolar ridge form
- 1 September 1985
- journal article
- research article
- Published by Wiley in Journal of Oral Rehabilitation
- Vol. 12 (5), 443-450
- https://doi.org/10.1111/j.1365-2842.1985.tb01550.x
Abstract
Resorption of the residual alveolar ridge calls for regular attention to the fitting surface of a denture. In the case of distal extension partial dentures, changes which occur in less than a year may require attention. These changes are apparent, though difficult to measure using radiographic techniques. Stereopho-togrammetry is a means of recording and measuring contours of land masses. A short focus non-metric camera was used in this study to produce stereoscopic paired pictures of four casts of the same partial dentition. Additional casts were made 2 and 12 months after a partial denture had been made. A stereophoto-grammetric plotting instrument was used to map the alveolar ridge area of each cast. A prescribed area for each map was traced out and the volume above a reference height was calculated. The percentage error between the four columns for the pretreatment casts was _t2%. A 10% loss of ridge volume was observed after wearing a partial denture for.2 months. The same area observed 12 months later revealed an 18% volume reduction. Short range stereophotogrammetry may be applied to study changes in alveolar ridge morphology which may result from wearing a partial denture.This publication has 12 references indexed in Scilit:
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