Abstract
The objectives of this study were to observe hard tissue changes in guided bone regeneration
(GBR) with intact periosteum and soft block deproteinised bovine bone mineral (DBBM),
and evaluate whether the result of horizontal bone augmentation varied by initial
peri-implant defect depth. Forty patients with a single missing tooth and contained
peri-implant defect were categorised into three groups according to their presurgical
defect depth (≤ 2, 2–4, and 4–6 mm). Cone-beam computed tomography (CBCT) images were
collected and reconstructed preoperatively, postoperatively, and at six months’ follow
up. The buccal bone width (BBW -0, -3, -5), alveolar bone width (ABW -0, -3, -5) and
volume of augmented area were measured. At the six-month follow up the increase in
BBW, ABW at all levels, and in bone volume, was statistically significant (all p < 0.001).
No statistical significance in bone dimensions or bone resorption was found among
groups (all p > 0.05). Histological analysis detected new bone formation in intimate
contact with bone grafts underlying the periosteum. Within the limitations of this
study, the insights gained may be of assistance to suggest that comparable and acceptable
results of horizontal bone augmentation can be achieved in cases of peri-implant defect
depth of ≤6 mm by means of GBR with intact periosteum.
Keywords
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Article info
Publication history
Published online: October 06, 2022
Accepted:
September 29,
2022
Identification
Copyright
© 2022 The British Association of Oral and Maxillofacial Surgeons. Published by Elsevier Ltd. All rights reserved.
