Journal
INTERNATIONAL JOURNAL OF ORAL AND MAXILLOFACIAL SURGERY
Volume 48, Issue 3, Pages 388-394Publisher
CHURCHILL LIVINGSTONE
DOI: 10.1016/j.ijom.2018.10.004
Keywords
horizontal bone augmentation; dental implant; ridge splitting technique
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Funding
- National Key Research and Development Program of China [2016YFC1102705/2016YFC1102700]
- Outstanding Young Scholar Fund of Sichuan University [2016SCU04B05]
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The aim of this study was to investigate a novel apical U-shape splitting technique for horizontal bone augmentation in undercut arcas and to compare its efficacy with that of guided bone regeneration (GBR). This was a prospective non-randomized controlled clinical trial. A total of 36 patients, who presented with a labial undercut that was not able to house a normally inclined implant, underwent the new technique or GBR. Radiographic and clinical data were obtained preoperatively, immediately after surgery, and 12 months after surgery. Pairwise comparisons of changes in ridge width gain, marginal bone loss, and pink aesthetic score were performed; correlations with pristine ridge morphology were investigated. The results showed similar marginal bone loss in the two groups. The overall ridge width gains in the new technique group (2.56 +/- 1.92 mm) and GBR group (0.73 +/- 1.21 mm) differed significantly (P < 0.05). The pink aesthetic score was higher for the new technique group (11.75 +/- 1.22) than for the GBR group (9.25 +/- 1.86) (P < 0.01). The morphology of the concavity had different impacts on regeneration in the two groups. The apical U-shape splitting technique, as a safe and effective alternative to GBR, provided a significant increase in bone volume gain where labial fenestration was inevitable during implant placement.
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