Bio-Gide膜与钛膜在牙种植术中的临床应用研究

目的:评价可吸收Bio-Gide膜与不可吸收钛膜在牙种植中骨再生修复的方法和效果。方法:对牙槽骨骨量不足的牙种植采用植Bio-Oss骨粉或自体骨,随机盖Bio-Gide膜与钛膜各30例,进行引导骨再生。结果:术后Bio-Gide膜与钛膜的伤口裂开发生率分别为3.3%与26.7%,伤口裂开的发生与手术切口、粘膜的厚度有关,盖钛膜伤口裂开后易发生感染。X光片显示:无感染膜下的Bio-Oss骨粉或自体骨改建形成了新骨,能与种植体形成紧密的骨性结合。结论:Bio-Gide膜与钛膜都能有效阻挡软组织长入植骨区,促进骨组织再生修复;Bio-Gide膜的使用方法简单,适应证广,临床应用方便。     

骨引导再生技术在牙槽骨骨量不足牙种植术中的应用

目的:评价骨引导再生技术在牙槽骨骨量不足患者牙种植术的应用效果.方法:对23例31颗牙槽骨骨量不足患者,种植体周围骨缺损处用人工骨粉植入及胶原生物膜覆盖.随访6-12个月,通过临床检查及x线曲面断层片,观察其临床效果.结果:随访6-12个月,种植牙形态及功能良好,x线检查未见明显骨吸收.种植牙100％成功.结论:对牙槽骨骨量不足患者,同期行GBR和种植体植入术后,可以重建缺损的骨组织,临床效果满意.     

Bio-Oss混合自体骨移植联合膜引导骨再生术在种植中的临床应用

目的：观察Bio-Oss混合自体骨联合膜引导骨再生术应用于牙种植的临床疗效。方法：对临床21例骨量不足的患者Ⅰ期植入种植体，同时植入Bio-Oss与自体骨的混合物，表面覆盖Bio-Gide胶原膜。在术后十天，一月，三月，六月通过临床检查及X线检查评价临床疗效。结果：21例患者植骨区新骨形成良好，牙槽嵴的外形丰满，种植体无动度，均完成了上部修复。结论：Bio-Oss混合自体骨联合膜引导骨再生术应用于种植区骨量不足的患者可取得较好的疗效。     

牙种植术中几种骨量不足的处理

本文应用冻干骨粉、羟基磷灰石、可吸收骨诱导膜等植骨材料，和磁固位附着种植体处理牙种植术中牙槽骨骨量不足。通过对临床２７例患者的治疗，结果：１３例使用植骨材料，诱导骨组织再生，增加了牙槽骨宽度和高度，种植体植入后稳定，均健康存在。１４例患者采用磁性固位附着种植体，制作全口覆盖义齿。种植体生长良好，义齿的支持，固体，咀嚼功能恢复较好，取得了满意的效果。     

局部自体骨粉末夹层法修复骨缺损的临床研究

目的:研究刮取局部临近自体骨碎末应用夹层法覆盖种植体表面修复种植体周围骨缺损的效果.方法:种植骨缺损区周围刮取部分皮质骨及松质骨,均匀铺在种植体表面,再放置Bio-Oss骨粉及Bio-Gide膜.结果:覆盖种植体表面的自体骨碎末外加Bio-Oss骨粉恢复了一定的骨缺损,所有种植体骨结合良好,6～9个月行烤瓷冠修复,形态和功能良好,患者满意.结论:在植入区附近刮取粉末状骨可以与种植体形成良好的骨结合,又恢复种植体周围骨缺损,是完全可行的.     

引导骨组织再生技术在牙种植修复中的临床应用研究

目的 评价引导骨再生技术在牙种植中引导骨再生修复的方法和效果。方法 对80例牙槽骨骨缺损的患者采用植Bio-Oss小牛骨粉，盖Bib-Gide膜或钛膜，进行引导骨再生，修复骨缺损并行骨内种植体周的骨增量。结果 80例患者共植入90枚种植体，38例采用钛膜，42例采用Bio-Gide胶原膜；术后部份患者伤口裂开、膜暴露；Bio-Gide膜与钛膜的伤口裂开发生率分别为7．1％与21．1％。二期手术时观察膜下骨再生情况，无感染患者膜下的新骨生成较膜暴露者多，Bio-Gide胶原膜暴露后自行愈合情况较使用钛膜者理想。88枚种植体成功地完成骨整合并成功完成义齿修复，2枚种植体因钛膜暴露及感染失败。结论 Bio-Gide胶原膜及钛膜皆能有效地屏蔽软组织，引导骨再生，重建牙槽骨外形；术后无伤口裂开、膜暴露者有较好的骨再生效果；与钛膜相比，Bio-Gide胶原膜更为简便易用，出现过早裂开的比率也较少。     

BIO-OSS人工骨与不同比例自体骨联合植入修复骨质缺损的实验研究

目的:建立种植体周围骨缺损的模型,植入自体骨、Bio-Oss人工骨、以及不同组成比例的骨移植物,比较新骨生成的效果.方法:拔除4条犬双侧下颌8颗双尖牙,拔牙12周后在每只实验犬两侧下颌植入8个钛钉,共32枚.分别于钛钉颊侧制造3ram*3mm*3mm的骨缺损.两侧自前向后依次植入收集的自体骨、1:2的Bio-Oss骨粉和自体骨混合物、2:1的Bio-Oss骨粉和自体骨混合物、单纯Bio-Oss骨粉,左侧覆盖钛膜,右侧覆盖胶原膜,严密缝合所有创口.植骨17周后取材,拍摄X线片,制作含钛钉的硬组织切片,光镜下观察.结果:4条试验犬32颗种植体术后均无感染,植骨区创口愈合良好.钛膜及胶原膜组均无暴露.切开粘膜可见32个人工制造骨缺损处光滑,坚硬,已经被新生骨组织充满.X线可见两种膜覆盖的区域种植体与骨结合紧密,无透射阴影,骨密度略有增高.全自体骨处骨密度略高于混合人工骨处.不同比例混合骨粉和自体骨以及全骨粉处成骨未见差异.在光镜下观察硬组织切片可见自体骨处成骨质量较高,其他三种植骨方式成骨差异不大,钛膜及胶原膜组相比亦未见成骨差异.讨论:本试验显示不同比例的骨移植物成骨效果未见差异,证实了Bio-Oss具有良好的生物相容性.与其他骨移植材料联合使用可获得理想的成骨效果.屏障膜可以完全封闭缺损区,且从缺损区周围正常骨组织获得足够的支撑.结论:不同组成比例的骨移植物对新骨生成作用未见差异,胶原膜与钛膜联合骨移植材料在引导骨再生中均能获得理想效果.     

胶原膜的应用及固定对人工骨粉成骨效果的影响

目的:评价可吸收性胶原膜的应用及固定与否对Bio-Oss人工骨粉成骨效果的影响。方法:4只实验用犬,在双侧下颌骨颊侧骨面随机形成3处约1 cm×1 cm的实验区,同体同侧的3个缺损区采用不同处理方法分为3组:A组为单纯应用Bio-Oss人工骨粉组;B组为骨粉与胶原膜联合应用并以钛钉固定组;C组为应用骨粉与胶原膜,但膜不予固定组。术后12周行大体、组织学及扫描电镜观察,对新生骨面积百分比进行统计分析。结果:3组均有新骨形成。B组新生骨较成熟,骨小梁结构排列有序,可见哈佛氏骨系统。A组可见软骨化骨组织及无规则骨小梁。C组有大量成骨细胞以及骨陷窝,新骨较A组成熟。结论:使用Bio-Oss骨粉与胶原膜联合应用并对膜加以固定的方法,其成骨效果要优于单纯应用Bio-Oss骨粉或骨粉与胶原膜联合应用但膜不作固定处理的这两种方法。     

可吸收性胶原膜引导即刻植入种植体周围骨组织再生的实验研究

目的探讨可吸收性胶原膜引导即刻植入种植体周围骨组织再生的效果。方法在12只成年杂种狗下颌第3、4前磨牙新鲜拔牙创即刻植入种植体的近中形成3 mm×3 mm×5 mm骨缺损区,按自身同期对照研究设计,右侧为实验侧,骨缺损区上覆盖Co膜;左侧为空白对照侧,骨缺损区不覆盖Co膜。术后1、2、4、6个月分别处死一组动物,摘取下颌骨,采用大体观察、X线摄片、组织学观察、扫描电镜及生物力学（拔出实验）测定等方法检测缺损区骨组织再生的情况。结果实验侧种植体周围骨缺损区较空白对照侧新骨形成量多、外形好、骨成熟时间早,加速了骨组织的再生过程。结论可吸收性胶原膜具有良好的生物相容性和可降解性,可用作骨组织引导再生膜,以期促进骨缺损的再生修复,其促进作用主要表现在骨组织愈合的早期。     

富含血小板血浆配合骨粉技术在上颌窦外提升术的应用

目的 PRP(富含血小板血浆)配合骨粉促进骨生长及种植体-骨结合,解决上颌磨牙缺损且牙槽嵴高度或厚度不足的问题。方法取38例患者76颗种植体,术中将Bio-oss骨粉和PRP混合物充填在种植体周围骨缺损区,通过术后4²4周口腔曲面断层X线片,评价PRP在种植体周围骨缺损中骨组织再生中的临床效果。结果术后424周口腔曲面断层X线片,评价PRP在种植体周围骨缺损中骨组织再生中的临床效果。结果术后4²4周观察发现骨缺损区都获得了高质量的新骨形成,38例病患种植体无一脱落,跟踪调查种植体3年内存活率达到100%。结论 PRP(富含血小板血浆)配合骨粉可以促进骨组织的再生与修复,促进种植体骨结合,缩短种植体骨结合时间。     

钛网+膜联合使用修复种植体周围牙槽骨缺损的实验研究

目的 探讨联合使用钛网+Bio-Gide膜修复比格犬种植体周围牙槽骨缺损的效果。方法 选择3只成年比格犬,拔除双侧下颌P1-M1,牙槽窝愈合6个月。将3只比格犬（共6侧）随机分为3组,A组使用种植体+骨粉+钛网,B组使用种植体+骨粉+Bio-Gide膜,C组使用种植体+骨粉+钛网+Bio-Gide膜。每侧选取3个位点制备种植窝,在颊侧制作4 mm×4 mm×4 mm牙槽骨缺损,植入种植体并分别覆盖钛网或Bio-Gide膜。于术后6个月处死动物并取材,Micro-CT扫描并三维重建。使用SPSS17.0软件包对测量结果进行统计学分析。结果 Micro-CT扫描及三维重建结果显示,C组的骨小梁数目、骨小梁厚度、骨密度等数据显著高于另外两组（P<0.01）,骨小梁分散度显著低于另外两组（P<0.01）。结论 联合使用钛网+Bio-Gide膜,对比格犬种植体周围牙槽骨缺损的修复作用显著优于单纯使用钛网或Bio-Gide膜。     

骨引导再生技术在种植体周围牙槽嵴重建中的应用

目的：探讨种植体周围牙槽嵴的重建方式。方法：植A种植体高出牙槽顶骨面，在其周围植入Bio-oss骨粉，以盖嵴式覆以Bio—Gide膜，钛钉固定。分别于术后3、6、8月。通过，临床、X线检查和二期术，观察创面与种植体和周围骨组织结合情况以及牙槽嵴成骨情况。结果：显效34例49枚种植体，无效3例3枚种植体。结论：骨引导再生术可有效重建种植体周围牙槽嵴．     

腺相关病毒介导的骨形态发生蛋白7基因促种植体周骨缺损修复的实验研究

目的观察载bmp7基因的腺相关病毒（rAAV- BMP7）复合Bio- Oss的基因治疗方法对种植体周骨缺损修复的影响。方法体外构建载bmp7基因的腺相关病毒,并与Bio- Oss复合。6只雄性新西兰大白兔双侧胫骨植入种植体,并制备直径8 mm、深4 mm的种植体周骨缺损,A组骨缺损区填入rAAV- BMP7/Bio- Oss复合物;B组仅填入Bio-Oss;C组不充填材料。术后4、8周分期处死动物,取样进行组织学观察和形态学分析。结果A、B组骨缺损处均有新骨形成,A组较B组新骨形成更早、新生骨量更多、骨成熟程度更高（P<0.05）。结论rAAV- BMP7复合Bio- Oss较单纯植入Bio- Oss能更快、更有效地促进种植体周围骨缺损形成新骨,新骨量大且成熟度高,并能形成理想的种植体- 骨结合界面。     

Instrument for extraction socket measurement in immediate implant installation

The aim of the present study was to create an instrument and a computer program for measurement of extraction sockets and for planning of the immediate replacement of teeth using screw-shaped dental implants. Ten titanium screw-shaped Osteofix Dental Implant System implants (Osteofix, Oulu, Finland) were immediately installed after extraction in nine patients, four women and five men (age 17-62 years). The measurements of fresh extraction sockets were taken at six points (mesio-buccal, buccal, disto-buccal, disto-lingual, lingual and mesio-lingual) using an instrument created by the author. The area of no contact between bone and dental implant was 11-40% (mean 31%, SD 9%), calculated by computer program. If less than 30% of the implant surface area would be in contact with the bone, immediate replacement was abandoned because sufficient primary stability could not be achieved. Guided bone regeneration was promoted by covering the implant and bone defect with deproteinized bovine bone mineral (Bio-Oss, Geistlich AG, Wolhusen, Switzerland) and bioresorbable collagen membrane (Bio-Gide, Geistlich AG), fixed in place with resorbable pins (Resor Pin, Geistlich AG). After 6 months a considerable, statistically significant (P < 0.05) defect reduction of 90% (SD 7%) was noted. It was concluded that an instrument and a computer program created for extraction socket measurement are useful in some borderline cases when there is lack of bone and the success of one-stage implantation is doubtful.     

引导骨组织再生技术应用于牙种植的临床观察

目的:临床观察引导骨组织再生技术在牙种植应用中的疗效。方法:对16例22枚牙种植区域的骨量不足及植入后的骨穿孔和骨缺损,采用人工骨、自体骨混合移植及生物胶原膜覆盖技术,促进和引导其骨形成从而完成牙种植术。结果:16例22枚牙种植体,全部成功,临床成功率为100%。结论:引导骨组织再生术的正确应用在牙种植方面是可靠而有效的。     

多孔矿化骨Bio-Oss和胶原膜Bio-Gide治疗牙周骨缺损的临床研究

目的：观察评价运用多孔矿化骨Bio-Oss和胶原膜Bio-Gide治疗牙周骨缺损的疗效.方法：选择15例无全身系统性疾病,经过牙周基础治疗的垂直性骨吸收的牙周骨缺损患者,其中10例16个牙位经牙周翻瓣术同时在骨缺损区植入Bio-Oss并放置Bio-Gide为治疗组,5例10个牙位经牙周翻瓣术为对照组,并于术后1,3,6个月回访,通过临床检查及X组检查评定疗效.结果：对照组使牙周袋变浅或消除,而治疗组附着水平增加,骨缺损区新骨形成.结论：Bio-Oss和Bio-Gide对治疗垂直性骨吸收的牙周骨缺损,可使其获得包括牙骨质、牙周韧带、骨在内的完整牙周再生.     

Long-term results of implants treated with guided bone regeneration: a 5-year prospective study.

The aim of this prospective 5-year longitudinal study was to follow endosteal implants in which guided bone regeneration (GBR) was applied during implant placement. In 75 patients, defects around implants (Branemark System) were treated with Bio-Oss and Bio-Gide (112 implants). In split-mouth patients in this group, Bio-Oss and Gore-Tex were used in the second defect site (41 implants). All 75 patients had at least 1 implant that was entirely surrounded by bone and served as the control (112 implants). After placement of the definitive prostheses (single-tooth, fixed, or removable implant prostheses), patients were recalled after 6 months and then every 12 months during a 5-year observation period. The following variables were investigated: implant survival, marginal bone level (MBL), presence of plaque, peri-implant mucosal conditions, height of keratinized mucosa (KM), and marginal soft tissue level (MSTL). The cumulative implant survival rate after 5 years varied between 93% and 97% for implants treated with or without GBR. The mean MBL after 60 months was 1.83 mm for sites treated with Bio-Oss and Bio-Gide, 2.21 mm for sites treated with Bio-Oss and Gore-Tex, and 1.73 mm for the control sites. The MBL values were found to increase significantly with time and differed significantly among the treatment groups. During the observation period, KM varied between 3.16 and 3.02 mm. A slight recession of 0.1 mm was observed, and plaque was found in 15% of all sites and was associated with inflammatory symptoms of the peri-implant mucosa. It was observed that such symptoms and recession correlated more strongly with the type of restoration than with the type of treatment. This study demonstrated that implants placed with or without GBR techniques had similar survival rates after 5 years, but that bone resorption was more pronounced in sites with GBR treatment. It was assumed that the use of GBR is indeed indicated when the initial defect size is larger than 2 mm in the vertical dimension.     

Effects of combined treatment with porous bovine inorganic bone grafts and bilayer porcine collagen membrane on refractory one-wall intrabony defects

The aim of this study was to investigate the effects of a combination of porous bovine inorganic bone graft (Bio-Oss) and bilayer porcine collagen membrane (Bio-Gide) on refractory one-wall intrabony defects in dogs. Bio-Oss and Bio-Gide were applied into the refractory one-wall intrabony defect. The contralateral sites were used as controls (without the application of Bio-Oss and Bio-Gide). At 24 weeks after surgery, similar pocket depths were found in both groups. However, histologic observation revealed an infiltration of inflammatory cells in the control group caused by poor gingival architecture, whereas only a few of the experimental sites showed inflammatory infiltration. In addition to the healthy gingival tissue, periodontal tissue regeneration was observed in the experimental group. The combination of Bio-Oss and Bio-Gide was an effective treatment for refractory one-wall intrabony defects in dogs.