Seigo Ohba1,2, Yoshinori Sumita3,4, Yuya Nakatani5,3, Sawako Noda5,3, Izumi Asahina5,3. 1. Department of Regenerative Oral Surgery, Institute of Biomedical Sciences, Nagasaki University, 1-7-1 Sakamoto, Nagasaki, 852-8588, Japan. sohba@nagasaki-u.ac.jp. 2. Center of Oral and Maxillofacial Implants, Nagasaki University Hospital, 1-7-1 Sakamoto, Nagasaki, 852-8588, Japan. sohba@nagasaki-u.ac.jp. 3. Center of Oral and Maxillofacial Implants, Nagasaki University Hospital, 1-7-1 Sakamoto, Nagasaki, 852-8588, Japan. 4. Basic and Translational Research Center for Hard Tissue Disease, Nagasaki University, 1-7-1 Sakamoto, Nagasaki, 852-8588, Japan. 5. Department of Regenerative Oral Surgery, Institute of Biomedical Sciences, Nagasaki University, 1-7-1 Sakamoto, Nagasaki, 852-8588, Japan.
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.
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.
Entities:
Keywords:
Alveolar bone preservation; Bone height; Bone width; Hydroxyapatite/collagen composite material