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背景:刘福祥教授自行设计的新型种植体在较短种植体长度上给出了较大骨接触面积,同时考虑到种植体的抗扭转能力、抗侧向力能力,种植体与骨弹性模量的匹配及加工和植入、修复的便易度。目的:观察自主设计的新型种植体植入颌骨后种植体-骨界面Ⅰ型胶原的表达变化,探讨新型种植体与牙槽骨的骨结合能力。方法:拔除成年狼犬双侧下颌前磨牙3个月后,于两侧拔牙位点牙槽骨分别植入新型种植体和圆柱状种植体各2枚。结果与结论:随时间增加两组周围骨组织密度逐渐升高,新型种植体组圆盘结构间出现密度逐渐升高的影像组织。两组种植体-骨界面均有Ⅰ型胶原表达,均于术后4周达高峰,且新型种植体组术后2,4周Ⅰ型胶原平均灰度值均高于圆柱状种植体组(P<0.05)。表明新型种植体植入颌骨后能够取得生物性成功,种植体-骨界面成骨较圆柱状种植体更快,更活跃,骨结合能力更强。
Background: The new implant designed by Professor Liu Fuxiang gives larger bone contact area on shorter implant length, taking into account the ability of the implant to resist twisting, lateral resistance, implant and bone elastic modulus Matching and processing and implantation, the ease of repair. OBJECTIVE: To observe the expression changes of type Ⅰ collagen at implant-bone interface after implanting a new type of implant into the mandible, and to explore the bone-binding ability of the new implant with alveolar bone. Methods: Three months after removal of bilateral mandibular premolars in adult dogs, two new implants and two cylindrical implants were implanted into the alveolar bone on both sides of the extraction site. RESULTS AND CONCLUSION: With the increase of time, the density of bone around the two groups gradually increased. The density of the disk in the new type of implant group increased gradually. The expression of type I collagen in both groups at the implant-bone interface peaked at 4 weeks after operation, and the average gray value of type I collagen in the new implant group at 2 and 4 weeks after operation was higher than that of the cylindrical implant group P <0.05). It shows that the new implants can achieve biological success after implanted into the jaw. The implants-bone interface is faster, more active and more able to combine with the cylindrical implants.