Abstract
This study aimed to evaluate the accuracy of cone beam computed tomography (CBCT) and ridge mapping for linear measurement of alveolar ridge width. In this cross-sectional study, 25 implant placement sites in 25 patients were selected and an acrylic stent was fabricated for each one. Three buccal-lingual point pairs were located on the stent at 4-, 7-, and 10-mm distances from the soft tissue summit of the alveolar ridge. The measurements were recorded by three examiners (two periodontists and one radiologist). Both techniques (CBCT and ridge mapping) overestimated alveolar ridge width compared to direct measurements, but mean differences compared to direct measurements (gold standard) were not statistically significant. The lowest mean difference compared to direct measurements was related to the ridge mapping technique, and CBCT measurements were less accurate to measure the alveolar ridge width. In determining alveolar ridge width, ridge mapping and CBCT are both valid and useful. Ridge mapping provides high accuracy, simplicity, and lack of radiation exposure.
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