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Type: Journal article
Title: Effect of 3 vertical facial patterns on alveolar bone quality at selected miniscrew implant sites
Author: Li, H.
Zhang, H.
Smales, R.
Zhang, Y.
Ni, Y.
Ma, J.
Wang, L.
Citation: Implant Dentistry, 2014; 23(1):92-97
Publisher: Lippincott Williams & Wilkins
Issue Date: 2014
ISSN: 1056-6163
Statement of
Hua Li, Hao Zhang, Roger J. Smales, Yang Zhang, Yuanyuan Ni, Junqing Ma, and Lin Wang
Abstract: OBJECTIVE: To evaluate dental alveolar bone quality among young healthy Chinese adults having 3 different vertical patterns. MATERIALS AND METHODS: Three-dimensional cone-beam computed tomography images of 101 subjects (15 low-angle, 48 average-angle, and 38 high-angle) were reconstructed. Facial alveolar cortical bone thicknesses and cortical and cancellous bone densities at 4 selected miniscrew implant sites in both arches, together with cancellous bone densities of third cervical vertebrae, were measured. Bone qualities were compared among the 3 vertical pattern groups. RESULTS: The cortical bone thicknesses at mandibular 5-6 and 6-7 and the cortical and cancellous bone densities at maxillary and mandibular 5-6 and 6-7 were generally greater in the low-angle than in the other 2 groups. There was no similar consistent vertical pattern apparent for bone quality at the 1-1 and 1-2 sites. No significant differences in bone densities for third cervical vertebrae were found among the 3 groups. CONCLUSION: Careful selection of suitable implantation sites and sizes of the miniscrews used should be made to reduce the possible occurrence of implant loosening in patients with average-angle and high-angle vertical facial patterns in particular.
Keywords: vertical facial pattern; alveolar bone quality; CBCT
Rights: © 2014 by Lippincott Williams & Wilkins
DOI: 10.1097/ID.0000000000000036
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