【摘要】：目的:評估Bicon短種植體(6-8mm)在后牙區(qū)骨量不足患者的種植體冠根比(crowntoimplantratio,C/I)的短期臨床效果。觀察并記錄種植體冠根比對近、遠(yuǎn)中邊緣骨高度和骨水平、以及冠根比對軟組織的影響。方法:選取2012年1月-2016年12月,山東大學(xué)種植科患者共10例,后牙區(qū)植入Bicon種植體共13枚,采用X線平行投照技術(shù),觀察修復(fù)體戴入當(dāng)天和使用3年之后,修復(fù)體的冠根比(C/I)與種植體近、遠(yuǎn)中邊緣骨高度變化的關(guān)系。臨床檢查觀察種植體軟組織的變化。將種植修復(fù)體按冠根比分為兩組:組1:C/I2.0,組2:C/I"g2.0。計算提供在總樣本中的兩組數(shù)據(jù)分布夏皮羅計算差異、皮爾森計算相關(guān)、Kendall秩相關(guān)系數(shù),顯示種植體冠長度與軟組織參數(shù)相關(guān)性。結(jié)果:13枚Bicon種植體,負(fù)重后種植體的平均C/I比為(1.854±0.292),范圍從1.561到2.146不等。統(tǒng)計學(xué)分析種植體冠根比組1(C/I2.0),組2(C/I"g2.0)之間無差異。組1與組2在觀察期間修復(fù)體負(fù)載正常,種植體近、遠(yuǎn)中邊緣骨高度、牙槽骨水平無明顯差異。牙槽骨吸收量組1(-0.24±0.98),組2(-0.12±0.28)為負(fù)值說明兩組間無牙槽骨丟失。測量患者平均mPI值和mSBI值得出結(jié)果P0.05表明種植體的高冠根比可能導(dǎo)致種植體周圍軟組織炎癥。結(jié)論:Bicon種植體有較常規(guī)種植體較高的冠根比,經(jīng)過3年的功能負(fù)荷評估中,種植體邊緣骨及骨水平丟失的風(fēng)險沒有增加,在后牙骨量不足的患者有很好的臨床應(yīng)用價值。高冠根比對于種植體軟組織,可有軟組織炎癥,應(yīng)定期做口腔檢查及種植牙的維護(hù)。
[Abstract]:Objective: to evaluate the short-term clinical effect of Bicon short implant (6-8mm) in patients with low bone mass in posterior teeth. The bone height and bone level of the distal margin and the influence of the ratio of crown to root on soft tissue were observed and recorded. Methods: from January 2012 to December 2016, 10 patients were enrolled in the Department of Implant, Shandong University, and 13 Bicon implants were implanted in the posterior teeth. The relationship between the ratio of crown to root (C / I) and the height of the proximal and distal margin of the implant. The changes of implant soft tissue were observed by clinical examination. The implants were divided into two groups: group 1: C / I 2.0, group 2:C/I "g 2.0." Shapiro calculated the differences between the two groups of data distribution in the total sample. Pearson calculated the correlation Kendall rank correlation coefficient and showed the correlation between implant crown length and soft tissue parameters. Results the average C / I ratio of 13 Bicon implants was (1.854 鹵0.292), ranging from 1.561 to 2.146. There was no significant difference in implant crown to root ratio between group 1 (C/I2.0) and group 2 (C / I "g 2.0). There was no significant difference between group 1 and group 2 in the level of alveolar bone and the height of distal marginal bone. The alveolar bone resorption was negative in group 1 (-0.24 鹵0.98) and group 2 (-0.12 鹵0.28), indicating that there was no alveolar bone loss between the two groups. The measurement of mean mPI value and mSBI were worth the results P0.05 indicated that the high root ratio of implant may lead to soft tissue inflammation around the implant. Conclusion the ratio of crown to root is higher than that of conventional implants. After 3 years of functional load assessment, the risk of loss of marginal bone and bone level is not increased, and it has a good clinical application value in patients with insufficient posterior bone mass. High crown root ratio for implant soft tissue may have soft tissue inflammation, should be regular oral examination and dental implant maintenance.
【學(xué)位授予單位】：山東大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：R783.6

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