アブストラクト(57巻2号:神奈川歯学)

神奈川歯学

Japanese

Title : 骨膜の有無における各種補填材の抜歯窩治癒過程の検討
Subtitle : 原著
Authors : 北條彩和子, 小島康佑, 児玉利朗
Authors(kana) :
Organization : 神奈川歯科大学臨床科学系歯科インプラント学講座高度先進インプラント歯周病学分野
Journal : 神奈川歯学
Volume : 57
Number : 2
Page : 87-97
Year/Month : 2022 / 12
Article : 原著
Publisher : 神奈川歯科大学学会
Abstract : 「緒言」抜歯後の歯槽堤は平均5~7mmの吸収が認められ, 大きく吸収し萎縮することが報告されている. 抜歯後3カ月間では, 水平方向に約3.87mm, 垂直方向に約1.67mm吸収し, またSchroppらは抜歯後12カ月で歯槽骨の骨幅が50%まで減少する可能性を報告している. 抜歯後の歯槽堤吸収の要因としては, 解剖学的な問題として前歯から小臼歯部における唇側もしくは頬側の歯槽骨の菲薄化が挙げられ, 舌側・口蓋側に比較して唇側・頬側において歯槽堤の吸収量が多いことが示されている. 抜歯対象歯は, 便宜抜歯などを除いてほとんどの症例で歯周炎や炎症性疾患を伴い保存不可能とされ抜歯されている. そのため抜歯窩唇側もしくは頬側の菲薄な歯槽骨壁の残存は期待できず, 抜歯後に吸収した歯槽骨壁と骨膜の欠損部への軟組織の陥入による一連の経過によって, 歯槽骨の再生が妨げられる. それに対し, インプラント埋入部位の歯槽骨幅や高さはインプラント治療実施の適応要因となっており, 抜歯後の歯槽骨の再生と歯槽堤の保存は重要となる.
Practice : 歯科学
Keywords : 抜歯窩, 骨膜, ソケットプリザベーション

English

Title : Healing process of tooth extraction socket with various filling materials in the presence or absence of the periosteum
Subtitle :
Authors : Sawako HOJO, Kousuke KOJIMA, Toshiro KODAMA
Authors(kana) :
Organization : Department of Implantology and Periodontology, Kanagawa Dental University
Journal : Kanagawa Shigaku
Volume : 57
Number : 2
Page : 87-97
Year/Month : 2022 / 12
Article : Original article
Publisher : Kanagawa Odontological Society
Abstract : [Abstract] [Background]: After tooth extraction, the alveolar ridge resorbs on an average of 5-7 mm. Socket preservation is performed to preserve the alveolar ridge after tooth extraction. However, the presence of the periosteum is not considered. [Purpose]: To investigate the application of various biomaterials with and without the periosteum in the healing process of extraction sockets. [Materials and methods]: A bone defect with a buccal dehiscence (5*7*4 mm) was created after extraction of the second and third mandibular premolars in two beagle dogs. It was divided into those with and without the periosteum. Defects were either filled with TCP/Col, β-TCP, collagen or left intact (control), and evaluated 12 weeks after surgery. The dimensional changes in width and height were evaluated using an optical three-dimensional scanner. In addition, the formation of new bone mass was assessed. [Results]: The alveolar ridge showed a resorption of 3.41 mm in width and 2.60 mm vertically with the presence of periosteum, and a resorption of 3.72 mm in width and 2.93 mm vertically without the presence of periosteum. The area of new bone in the presence of periosteum was 5.07 mm2 in the composite, 4.82 mm2 in the collagen, 3.47 mm2 in the β-TCP, and 2.34 mm2 in the control groups. On the other hand, the new bone area in the absence of the periosteum was 3.00 mm2 in the composite , 2.39 mm2 in the collagen, 3.77 mm2 in the β-TCP, and 2.19 mm2 in the control groups. The new bone area tended to be larger with the periosteum than without the periosteum. [Conclusion]: The maintenance of alveolar ridge width and bone regeneration were observed in the presence of periosteum.
Practice : Dentistry
Keywords :