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Volume 27 , Issue 4
July/August 2012

Pages 770-775

Three-Dimensional Evaluation of Bone Changes Following Ridge Preservation Procedures

Emanuele Clozza, DDS/Matteo Biasotto, DMD, PhD, MS/Fabio Cavalli, MD/Loredana Moimas, MEng, PhD/Roberto Di Lenarda, DDS

PMID: 22848877

Purpose: To evaluate three-dimensionally the bone change following ridge preservation procedures (RPP) using computed tomography (CT). Materials and Methods: Subjects in need of implant therapy were enrolled in the study. The teeth were extracted, and sockets underwent RPP with a bioactive glass (Inion BioRestore, Inion Oy). The patients were scanned with CT within 1 week and 3 months after surgery. Horizontal and vertical radiographic measurements were performed on superimposed CT scans to evaluate bone changes in the alveolar sites during the 3-month period. Results: Thirteen subjects participated, and 32 teeth were extracted and treated with grafting. Alveolar sites treated with RPP demonstrated a preservation of about 77% of the original width dimensions, with a mean loss of 1.8 1.1 mm in width. Moreover, it was observed that the vertical loss of buccal bone was 2.7 1.1 mm, while the loss of lingual bone was 1.9 1.2 mm. Conclusions: The CT evaluation was helpful to assess that the bone loss in width was less than the vertical bone loss of both walls 3 months after RPP. Int J Oral Maxillofac Implants 2012;27:770775.

Key words: alveolar ridge preservation, bioactive glass, bone morphometry, computed tomography, graft material

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