TITLE

A clinical investigation of the morphological changes in the posterior mandible when implant-retained overdentures are used

AUTHOR(S)
Blum, I. R.; McCord, J. F.
PUB. DATE
September 2005
SOURCE
International Journal of Prosthodontics;Sep/Oct2005, Vol. 18 Issue 5, p426
SOURCE TYPE
Academic Journal
DOC. TYPE
Abstract
ABSTRACT
The aim of this study was to determine the morphological changes seen in the posterior residual ridges over a 1-year period using a nonradiographic device. Sixteen patients (ages 36 to 72) who received 2 to 4 implants were selected. Inclusion criteria included but were not limited to: (1) uneventful healing phase; (2) moderate bone quality and resorption; (3) no systemic or psychological contraindications to dental treatment; (4) edentulous maxillary ridge with maxillary denture. Impressions were made of the mandibular ridge using standardized measuring techniques with 1 operator at baseline (after implant placement) and after 1 year of wearing the implant-retained overdentures. Resulting casts were oriented using 3 orientation points: v-notches on precise locations in the retromolar pads and midway between the anterior implants. The casts were mounted using the exact tripoded location and placed on a profiling apparatus capable of 2- dimensional reproduction of the surface of a cast. Statistical analysis used a paired t test at .05 significance level. Results indicated that the mean reduction in the total sagittal surface contour areas of the mandibular residual ridge distal to the implants averaged 5 cm² or 20% (SD = 9%). In conclusion, the method used in this study is an effective way of examining sagittal dimensional changes in bone while minimizing patient exposure to radiation.]
ACCESSION #
36865471

 

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