Replace Implant System的临床应用及评价

目的 :评价ReplaceImplantSystem的临床效果。方法 :用ReplaceImplantSystem进行延期或即刻种植。采用埋入式二次手术方式 ,对72例患者植入90枚种植体 ,金属烤瓷冠修复 ,临床随访观察3年。结果 :种植体成功率100% ,种植体周齿槽骨水平吸收<0.2mm/年 ,烤瓷冠崩瓷4颗 ,固定螺丝钉松动1颗 ,种植体周围龈炎11颗。结论 :ReplaceImplantSystem适用于常见的牙列缺损的延期或即刻种植。     

前牙区延期即刻牙种植术的临床应用研究

目的：评价前牙区延期即刻种植的技术特点及近期临床效果.方法：对36例患者前牙区患牙拔除4～6周后,植入Frialit-2及Xive两种种植系统共53枚种植体,4～6个月后行二期手术,暴露种植体,最终完成烤瓷牙冠修复.结果：术后无明显并发症发生,修复完成后观察6～32个月,种植体行使功能良好,无种植体丧失.结论：延期即刻种植的临床方法可行,近期临床效果满意,修复美学效果佳.     

BLB种植系统的临床应用及疗效观察

目的评价BLB种植系统的临床效果.方法用BLB种植系统进行延期或即刻种植,采用一期埋入,二期暴露的二次手术方式,对337例患者植入555枚种植体.金属烤瓷冠修复,其中6例患者20枚行全口义齿的球帽及杆卡可摘义齿修复,临床随诊观察一至四年.结果种植成功率95.4%,种植体周围齿槽骨水平吸收＜0.2 mm/年.修复基台松动7枚,烤瓷冠中央螺丝松动38枚,烤瓷冠崩瓷6枚,种植体周围炎24例;球帽式总义齿修复有2例4枚半年后义齿固位力下降,球基台发生磨损;杆卡式总义齿修复效果良好.结论 BLB种植体适合于常见的牙列缺损及牙列缺失的种植修复.     

即刻负荷种植牙的重建研究

目的:探讨种植体即刻负荷后(牙合)重建对种植体周骨质变化的影响。方法:26枚骨内种植体植入8例患者口内,13枚为即刻负荷,13枚为延期负荷。采用数码X线片仪测定种植体周骨密度变化并作相关临床指征分析。结果:即刻负荷种植体周骨质密度的改善较延期负荷者明显。,结论:种植即刻修复中的(牙合)稳定和平衡是即刻负荷种植体形成骨整合界面的保证。     

一段式锥状种植体用于前牙即刻加载种植修复的远期疗效评价

目的：对前牙区牙槽嵴较狭窄病例采用微创技术和锥状种植体进行前牙区即刻加载修复并评价其远期临床疗效。方法：收集1998～2000年临床病例21例,应用非翻瓣式一期法环切术,将一段式锥状种植体植入前牙缺失区,57枚种植体分为即刻加载修复组（治疗组）27枚和常规延期修复组（对照组）30枚,术后观察指标为：GI、种植体周围炎、植体稳定性,拍摄X线片了解牙槽嵴吸收情况,随访10～12年,评价其远期临床效果。结果：治疗组和对照组的临床成功率分别为96.3﹪和96.7﹪,统计学无显著性差异。结论：小直径一段式种植体较适合国人前牙区牙槽嵴解剖结构,不易引起骨壁侧穿,初期稳定性好;非翻瓣式环切手术入路,可保留龈乳头的完整性,使患者免除二次手术痛苦。     

前牙区延期即刻牙种植术的临床研究

目的:评价前牙区延期即刻种植的技术特点及近期临床效果.方法:对66例患者前牙区患牙拔除4～6周后,植入Fdalit-2及Xive两种种植系统共107颗种植体,4～6个月后行二期手术,暴露种植体,最终完成烤瓷牙冠修复.结果:术后无明显并发症发生,修复完成后观察6～48个月,种植体行使功能良好,无种植体丧失.结论:延期即刻种植的临床方法可行.近期临床效果满意,修复美学效果佳.     

口腔种植义齿修复的临床分析与评价

目的:总结分析应用钛金属种植体行骨内种植修复牙缺失成功的主要因素,评价临床效果。方法:本组共66例,男性57例、女性9例;年龄18～43岁,平均35岁。共种植78枚种植体。即刻种植15枚,延期种植63枚。3～6个月后行二次手术,取出封闭螺帽,旋入愈合帽,10天后旋入种植体桩,完成冠部修复。结果:78枚种植体,经5年随访观察,效果满意,x-ang示:种植体周围骨组织无吸收现象,骨质密度无减低。5年成功率达100%。结论:首先选择好适应症。严格无菌原则,采用良好的种植材料,合理的设计,熟练的手术操作,无创伤的植入技术和修复时遵循无咬合创伤和便于种植体颈部清洁的原则,是获得种植牙成功的基本因素。     

不翻瓣种植即刻修复的临床探讨

目的:初步对不翻瓣牙种植即刻修复进行临床探讨。方法:共对39例局部牙列缺失病人行不翻瓣种植即刻修复,男性21例,女性18例。使用CT进行术前检查,以不翻瓣方式共植入种植体106枚,均于手术当天完成树脂临时修复。术后6～24周进行永久修复。结果:39例106枚种植体中,下颌22例64枚种植体,上颌17例42枚种植体,修复后成功率为100%。结论:在严格地掌握病例纳入标准,谨慎地设计治疗计划和仔细手术操作下,不翻瓣种植即刻修复可以获得满意的初步临床结果。     

Anthogyr种植体在后牙即刻种植中的临床应用

目的：评价Anthogyr种植体应用于后牙区即刻种植的近期临床效果。方法：2013年1月～2014年11月施行后牙区即刻种植手术患者67名,共103个种植位点,均为微创拔牙后即刻植入Anthogyr种植体,其中67枚种植体同期行GBR技术,术后3～6个月根据临床和影像学结果行二期手术及上部结构修复,随访观察6～15个月（平均9个月）。结果：共植入103枚种植体,其中101枚骨结合良好,在随访期内无明显并发症,种植体负重后第1年牙槽骨吸收水平＜1 mm。1例糖尿病患者2枚种植体于种植手术后20周脱落,成功率为98．06％。结论：Anthogyr种植体在后牙区采用即刻种植可以获得良好的骨结合,缩短患者缺牙时间,减缓牙槽嵴吸收,患者满意度较高。     

593枚二段非埋置式种植体近期疗效观察

目的:探讨二段非埋置式种植体植入手术的优点、临床操作与可行性。方法:237例牙缺失患者,共植入593枚二段非埋置式种植体,非埋置法植入,即刻修复或3～6个月后延期修复,观察3～36个月。结果:23枚种植体松动,取除,其余种植体骨结合良好,短期留存率96.12%。结论:二段非埋置式种植体种植修复,简化了手术,缩短了疗程,取得良好的近期效果。     

68枚Xive种植体的临床应用效果

目的：评价Xive种植体用于修复牙列缺损的临床应用效果。方法：对32例牙列缺损的患者,采用68枚Xive种植体修复治疗,术后随访,记录周围软组织状态、种植体松动度、X线检查种植体周围骨组织情况、患者满意度等指标。结果：68枚种植体所有植体均未发生感染,无松动脱落;全冠修复后,除有2枚修复体出现水平嵌塞,其余患者均较为满意。结论：Xive种植体用于修复牙列缺损效果较为满意。     

Bio-oss骨胶原在即刻种植中的临床应用研究

目的:探讨Bio-oss骨胶原在即刻种植中的临床应用。方法:拔除患牙,采用Xive种植系统的操作方法,将Xive种植体即刻植入拔牙区,骨量不足处植入Bio-oss骨胶原。3-6个月后进行Ⅱ期手术,10天后进行固定修复。结果:22枚即刻种植的Xive种植体中,上颌16枚,下颌6枚,观察最长24个月,最短12个月,种植体存留率为100%。结论:Bio-oss骨胶原在Xive即刻种植的临床应用结果满意,其长期效果有待进一步观察。     

前牙区引导骨再生同期植入两种种植体的美学效果比较

目的探讨Ankylos与Xive种植体在引导骨再生（GBR）技术修复前牙美学区中美学效果的差异。 方法采用GBR技术,随机选取应用Ankylos或Xive种植体行前牙美学区单牙修复的患者各30例,相应为Ankylos组与Xive组,均于二期术后6、12、24个月复查,以红色白色美学标准（PES/WES）评分对二期术后6、12、24个月进行美学效果评价,并记录两组二期术后24个月的种植成功率。 结果（1）种植成功率：Xive组和Ankylos组为100%,差异无统计学意义（χ²=0,P > 0.05）。（2）美学效果：PES评分在二期术后6个月在Xive组显著高于Ankylos组,差异有统计学意义（t= 4.86,P < 0.05）,二期术后12个月PES评分差异无统计学意义（t= 0.21,P > 0.05）,二期术后24个月Ankylos组PES评分显著高于Xive组,差异有统计学意义（t= 3.03,P < 0.05）;WES评分在二期术后6个月与12个月在Xive组与Ankylos组差异无统计学意义（t= 0.12/0.15,P均> 0.05）,24个月Ankylos组WES评分显著高于Xive组,差异有统计学意义（t= 2.06,P < 0.05）。 结论前牙区引导骨再生同期植入Ankylos与Xive种植体均可获得高成功率与满意的美学修复效果。鉴于本研究未对骨量不足及GBR难度进行分类,难以均衡这一因素影响,GBR同期行Ankylos与Xive种植体植入的美学效果差异评估有待后续研究的进一步深入。     

即刻种植修复上前牙的临床美学疗效观察

目的：评价上颌前牙即刻种植即刻修复的临床美学效果。方法：临床选择26例上前牙残根患者,在拔牙后即刻植入Xive种植体26枚,同时接入基台行复合树脂临时冠/桥修复,6个月后,行永久性修复。种植后嘱患者按期复查,评价应用效果。结果：种植牙修复后咀嚼功能恢复良好,种植体周围软组织健康美观。修复体单冠和修复基台的接缝位于龈下,种植牙给人以从龈下长出来的视觉效果。24名患者对修复体及其临床应用效果和美观效果都评价为满意,1枚种植体发生周围炎,1颗烤瓷冠崩瓷。满意度为92.31%。结论：Xive种植体在上颌前牙缺失即刻种植即刻修复中能够获得满意的临床效果。但要注意种植中软、硬组织和修复体的美学处理。     

Xive种植系统的临床效果观察

目的：评价Xive种植系统用于缺牙区种植修复的临床效果。方法：临床选择53例患者，对骨量充足的23例患者进行即刻种植修复，并于24小时内完成。另30例患者进行常规种植手术。共植入Xive种植体112枚，并对其进行定期的临床和放射学检查。结果：53例患者中有23例患者接受即刻种植修复，涉及67枚种植体，经6个月以上观察，失败1枚，1枚弃用。30例患者接受常规种植修复，无失败病例。观察期最短8个月，最长20个月。种植体成功率为98．2％。结论：Xive种植系统用于种植修复的临床效果是满意的。     

平台转换在种植义齿修复中的临床评价

目的：评价平台转换技术在牙列缺损种植修复中的临床效果。方法：38例牙列缺损种植患者随机分为实验组与对照组,共植入51枚直径为4.5 mm XIVE种植体。实验组：19例27枚种植体选用愈合基台直径为3.8 mm平台转换连接式,重建种植区的结合上皮,3.8 mm修复基台,高含金量贵金属烤瓷冠修复。对照组：19例24枚种植体选用愈合基台、修复基台直径与种植体直径相同的平齐对接连接式,高含金量贵金属烤瓷冠修复。分别于种植体负载前及负载后3、6、12月时行X线检查,测量种植体颈部边缘骨吸收量及软组织健康状况并进行评价。结果：平台转换种植体颈部骨吸收量明显小于对连接种植体（P﹤0.01）,两者软组织健康状况差异不明显（P﹥0.05）。结论：与平齐式对接相比,功能负载1年内,临床平台转换设计可保留种植体颈部边缘骨高度。     

Micromotion and stress distribution of immediate loaded implants: a finite element analysis

Background: Primary stability and micromotion of the implant fixture is mostly influenced by its macrodesign.
Purpose: To assess and compare the peri-implant stress distribution and micromotion of two types of immediate loading implants, immediate loaded screw (ILS) Nisastan and Xive (DENTSPLY/Friadent, Monnheim, Germany), and to determine the best macrodesign of these two implants by finite element analysis.
Methods: In this experimental study, the accurate pictures of two fixtures (ILS: height = 13, diameter = 4 mm and Xive: height = 13, diameter = 3.8 mm) were taken by a new digital camera (Nikon Coolpix 5700 [Nikon, Japan], resolution = 5.24 megapixel, lens = 8× optical, 4× digital zoom). Following accurate measurements, the three-dimensional finite element computer model was simulated and inserted in simulated mandibular bone (D₂) in SolidWorks 2003 (SolidWork Corp., MA, USA) and Ansys 7.1 (Ansys, Inc., Canonsburg, PA, USA). After loading (500 N, 75° above horizon), the displacement was displayed and von Mises stress was recorded.
Results: It was found that the primary stability of ILS was greater (152 µm) than Xive (284 µm). ILS exhibited more favorable stress distribution. Maximum stress concentration found in periapical bone around Xive (≈30 MPa) was lesser than Nisastan (≈37 MPa).
Conclusions: Macrodesign of ILS leads to better primary stability and stress distribution. Maximum stress around Xive was less.     

Two-year prospective clinical comparison of immediate replacement vs. immediate restoration of single tooth in the esthetic zone

Aim: To compare the immediate restoration of single implants in the esthetic zones performed on implants placed immediately after tooth extraction or 8 weeks later (immediate replacement vs. immediate restoration). Methods: Sixteen patients (10 women and 6 men) with a mean age of 35 years (ranging from 21 to 49 years old) were treated from 2004 to 2005 for single‐tooth replacement in the upper arch. The patients were randomly divided into two groups: in the test group patients received implants placed and restored (non‐occlusal loading) at the time of tooth extraction; in the control group implants were placed 8 weeks after tooth extraction and immediately restored. All the patients received tapered effect (TE) implants from the Straumann Dental Implant System. The following parameters were evaluated at the moment of provisional restoration (within 48 h after implant placement) and at the 2 years follow‐up visit: marginal bone resorption, papilla index, position of the mucosal margin. The implant stability quotient was measured at the moment of implant placement and at the moment of the delivery of the definitive restoration. Results: No statistically significant differences were found in any of the studied parameters between the test and the control groups (P>0.05). The implant stability quotient values between the test and control groups were significant (P<0.05) at the moment of implant placement but were no more significant at the loading of the definitive restoration (P>0.05). Conclusion: The results of the present study suggest that immediate replacement without functional loading may be considered a valuable therapeutic option for selected cases of single‐tooth replacement in the esthetic area when TE implants are used. Implant stability at the moment of implant placement is slightly inferior in the immediate replacement group, but it does not affect the treatment result.     

Immediate transmucosal implants using the principle of guided tissue regeneration. (II). A cross‐sectional study comparing the clinical outcome 1 year after immediate to standard implant placement.

The aim of the present study was to compare the peri‐implant mucosal conditions 1 year after immediate transmucosal implant placement without or in combination with guided tissue regeneration with the situation after regular placement of transmucosal 1‐stage procedure implants in partially edentulous patients. The test group consisted of 15 patients who required the immediate replacement of 20 teeth with oral implants in combination with guided tissue regeneration. The control group 1 consisted of 6 patients who received 8 immediate implants, without concomitant bone regeneration procedure due to the small size of the extracted roots in comparison to the diameter of the implants. The 20 patients of the control group 2 were randomly chosen from over 150 partially edentulous patients who received implants of the ITI® Dental Implant System according to the standard procedure. Similar favorable clinical parameters were found around the implants of all the 3 groups with low plaque and mucosal indices, similar amounts of recession, pocket probing depths and clinical attachment levels. The immediate implants demonstrated lower frequencies of sites bleeding on probing. The study has established that immediate oral implants are a feasible treatment modality with high predictability.