Abstract
Objective
The aim of this study was to assess the effectiveness of a hydroxyapatite/collagen composite material (HAp/Col) for preservation of alveolar bone after tooth extraction.
Materials and methods
HAp/Col was applied to the alveolus bone ridge preservation after tooth extraction, because of subsequent dental implant placement in 35 regions of 24 patients (mean age, 59.3 years; range, 25–81 years). Cone beam computed tomography was used to assess changes in alveolar bone at the extraction site before and at 3 months (mean, 13.7 weeks; range, 10–17 weeks) after tooth extraction. Changes in height and width of the alveolar bone were measured to evaluate bone reduction after surgery. Bone biopsy was performed at 11 regions of dental implant placement to observe bone regeneration and remaining material in the extraction socket.
Results
The alveolar bone height was decreased by 0.00 ± 2.44 mm at the buccal side and 0.35 ± 1.73 mm at the lingual side, while the width was decreased by 1.02 ± 1.64 mm at 3 months after surgery. The middle of the socket floor was elevated by 5.71 ± 3.45 mm at 3 months after surgery. Bone biopsy specimens revealed no remaining implanted material, and approximately 49.79 ± 14.41% of the specimens were occupied by bone tissue.
Conclusions
According to the result of this study, HAp/Col is a reliable material to presearve alveolar bone after tooth extraction.
Clinical relevance
HAp/Col contributes dental implant treatment due to maintain the alveolar bone after tooth extraction.
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Acknowledgments
We thank all staff of the Center of Oral and Maxillofacial Implants at Nagasaki University Hospital and the Department of Regenerative Oral Surgery at the Graduate School of Nagasaki University for surgical assistance. We also appreciate Prof. Takashi Sawase for critical reading of the manuscript.
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Conflict of interest
HAp/Col which was used in this study was provided from HOYA Technosurgical.
Ethical approval
This study was approved by the Clinical Research Ethics Committee of Nagasaki University Hospital (Approval No. 15012684).
Informed consent
All patients provided sufficient informed consent and agreed to participate in this study.
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Ohba, S., Sumita, Y., Nakatani, Y. et al. Alveolar bone preservation by a hydroxyapatite/collagen composite material after tooth extraction. Clin Oral Invest 23, 2413–2419 (2019). https://doi.org/10.1007/s00784-018-2705-6
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DOI: https://doi.org/10.1007/s00784-018-2705-6