The effect of various implant materials on cementogenesis.
スポンサーリンク
概要
- 論文の詳細を見る
Various implant materials have been used to stimulate the regeneration of supporting bone lost from periodontal disease. In addition, the histologic features of bone regeneration associated with their implantation have been evaluated. Very little, however, seems to be known about the effect of implant materials on cementum formation. The aim of this study was to determine whether implant materials stimulate the cementogenesis on adjacent planed root surfaces. Twelve monkeys with healthy gingivae were used in this experiment. Following mucoperiosteal flap elevation, "windows"were chiseled in the bone to the proximal root dentin surfaces and adjacent root surfaces were planed. Each of the three implant materials [tricalcium phosphate (TCP), decalcified bone matrix (DBM) and hydroxyapatite (HA)] were then placed in the cuspid and incisor root "windows" before the flap was sutured back into the previous position. Windows with no implantation served as a control. Animals were sacrificed 2, 4 and 8 weeks postoperatively. Biopsy specimens including the tooth and surrounding bone were examined by light and electron microscopy.<BR>At 2 weeks, all implant particles were surrounded by fibrous tissue. On the other hand. fibrous tissues filled the control defect. On the planed root surfaces after the implantation of TCP and DBM, furthermore, cementoid tissue appeared. At 4 weeks, a considerable amount of new cementum was deposited on the root surfaces except in the implantation of HA. It was especially pronounced after implantation of TCP and DBM which promoted bone regeneration after resorption. These results suggest that resorbable implant materials such as TCP and DBM not only facilitate the formation of new bone, but also of new cementum.
- 特定非営利活動法人 日本歯周病学会の論文
特定非営利活動法人 日本歯周病学会 | 論文
- 思春期後に歯槽骨吸収が自然停止した早期発症型歯周炎患者の1症例
- 離島における5年間のProfessional Tooth Cleaning (PTC)を中心とした予防活動の効果
- 歯周病の病因におけるプロスタグランジンの産生機構とその役割の解明について
- 教育現場におけるPMTCの位置づけ
- 早期発症型歯周炎患者のテロメア長に関する研究