本文選題：下頜骨　切入點：牙種植體　出處：《中國組織工程研究》2017年14期 　論文類型：期刊論文

【摘要】：背景:在臨床實踐中發(fā)現,根據患者下頜平面角選擇不同規(guī)格的種植體,其長期成功率有所不同,因此有理由設想下頜平面角角度會影響下頜種植體的應力分布,進而影響種植成功率。目的:從下頜平面角角度、下頜骨骨密度以及種植體規(guī)格3方面因素對下頜第一磨牙種植體應力分布的力學特性進行正交實驗與分析,重點考察下頜平面角對下頜種植體的應力影響規(guī)律。方法:針對種植體力學特性問題,此次正交實驗涉及3個因素,在影響因素方面確定下頜平面角、種植釘直徑、骨密度類型這3個因素,每個因素分別對應3個水平,其中下頜平面角角度分別為14°、22°、34°,種植體直徑分別為6.6,8.2,9.6 mm,骨密度類型分別為Ⅱ、Ⅲ、Ⅳ類。根據正交表L9(33)方案將種植體模型植入牙槽骨模型。將不同種植復合體置于力學壓力實驗機上,壓力大小為500 N,其受力結果由應變(應力)數據采集儀進行實時采集。結果與結論:最優(yōu)參數組合為:下頜平面角為低角,種植體直徑為4.8 mm,下頜骨骨密度為Ⅱ型骨。各個因素的主次關系:種植體直徑下頜平面角角度骨密度。結果表明,下頜平面角角度對種植體的穩(wěn)固有一定的影響,在同樣咬合力的情況下,高角種植體所受應力最大,其次是均角,低角最小。
[Abstract]:Background: in clinical practice, it is found that the long-term success rate is different according to the mandibular plane angle, so it is reasonable to assume that the mandibular plane angle will affect the stress distribution of mandibular implant. Objective: to analyze the stress distribution of mandibular first molar implant by orthogonal experiment from the angle of mandibular plane angle, bone mineral density of mandible and implant size. Methods: according to the physical characteristics of implant, the orthogonal experiment involved three factors, the angle of mandible plane and the diameter of implant nail were determined in the aspects of influencing factors, such as the angle of mandible plane, the diameter of implant nail, the angle of mandibular plane and the influence of mandibular plane angle on mandibular implant. The three factors of bone mineral density type correspond to three levels, in which the angle of mandibular plane angle is 14 擄, 22 擄擄/ 34 擄, the diameter of implant is 6.6 ~ 8.2 mm, and the type of bone density is 鈪，

本文編號：1636507