钛膜引导骨再生技术在即刻种植中的应用

骨结合式种植按植入时间可分为即刻种植、延期种植 ,前者具有疗程短、防止骨吸收、无牙期短等优点 ,但即刻种植在临床工作中常遇到局部牙槽突吸收或种植体不能完全占据整个拔牙窝而出现的骨缺损 ,从而影响种植质量 ,导致种植失败。以前多采用骨移植方法解决此类骨缺损。近年来 ,引导骨再生生物膜技术出现与应用 ,扩大了种植适应证。我们对 73例即刻种植病例 ,选择医用纯钛骨再生引导膜封闭骨缺损 ,术后 12周 X线显示骨缺损完全修复 ,表明钛膜能成功起到屏障作用。1　材料与方法1.1　材料和设备西安中邦公司生产的医用纯钛膜骨再生引导膜 (3…     

膜引导骨再生技术在即刻牙种植中的临床研究

目的：评价膜引导骨再生（GBR）技术在即刻牙牙种植术中的临床效果。方法：132例即刻植入BLB、Branemark、ITI及Frinlit-2四种种植系统共193个，对其进行定期临床和放射学检查。结果：193例即刻种植体中124个行GBR技术，经12个月以上观察，失败4个。结论：只要种植体取得初期稳定性，对种植体与拔牙窝间存在的间隙，采用膜引导再生技术处理，即刻种植可以取得良好的临床效果。即刻植入种植体同时常常需要使用GBR技术。采用即刻植入技术同时使用GBR技术的病例，其临床效果令人满意。GBR技术用于即刻种植所产生的临床效果良好。     

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。     

钛膜引导骨再生在骨内种植体植入中的应用

目的：总结牙种植术后使用钛膜引导骨再生临床体会。方法：对30例47枚牙种植术中发现骨缺损、骨量不足的患者采用钛膜进行骨引导再生修复骨缺损及骨增量。术后定期观察，对新骨生长情况进行连续临床和X线的观察分析。结果：30例47枚牙种植术中，39枚种植体植入部位使用了钛膜。二期手术时种植体均已与骨组织形成理想的骨融合，顺利完成种植义齿修复。39枚种植体中有15枚种植体术后2个月的X线片可见到种植体封闭螺帽上方骨密度增高影。4月后二期手术切开牙龈时可见到新骨覆盖种植体表面，以骨凿等去除新骨后方可见到封闭螺帽。结论：医用钛膜在种植术中应用有较好的引导骨再生作用，有利于种植术后骨融合期新骨的形成。不可吸收性膜的一些固有缺陷可通过临床正确的设计关在术中严格按照操作要点进行手术，可获得理想的骨再生效果。     

膜引导组织再生在口腔种植学中的应用研究

应用膜屏障阻止结缔组织和上皮组织细胞长入种植体区和骨缺损区,引导骨组织优先生长,增加种植体周围新骨形成,促进骨缺损的修复,这种手术即引导种植体周围骨组织再生术。本文对手术的方法,膜材料的性质,与种植体有关的骨缺损的分类及手术应用效果进行了讨论。     

膜引导组织再生在口腔种植学说中的应用研究

应用膜屏障阻止结缔组织和上皮组织细胞长入种植体区和骨缺损区，引导骨组织优先生长，增加种植体周围新骨形成，促进骨缺损的修复，这种手术即引导种植体周围同组织再生术。本文对手术的方法，膜材料的性质，与种植体有关的骨缺损的分类及手术应用效果进行了讨论。     

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。     

引导骨再生术在种植手术中的应用

<正>1982年,Nyman用一种半透性滤膜治疗牙周病,后扩展应用于骨缺损的治疗。1993年,Buser等提出了引导骨再生(guided boneregeneration,GBR)的概念。其原理是根据各类组织细胞迁移速度不同,将屏障膜置于软组织和骨缺损之间建立生物屏障,创造一个相对封闭的组织环境,阻止结缔组织细胞和上皮细胞进入骨缺损区,允许有潜在生长能力、迁     

引导组织再生技术在即刻种植中的应用和研究现状

本文对目前引导组织再生技术在即刻种植中的应用和研究现状作了评述。详细的阐述了用于引导组织再生技术的可吸收膜和不可吸收膜的特点，以及目前在即刻种植中运用引导组织再生技术存在的膜暴露，感染等问题。     

应用膜引导骨再生技术修复上颌侧切牙种植位点骨缺损的临床观察

目的:评价上颌侧切牙种植过程中应用膜引导骨再生(GBR)技术后修复的临床效果及美学满意度。方法:选择90例仅上颌侧切牙缺失的患者,植入种植体101颗(分别为3I、奥齿泰、ITI、Ankylos及BLB种植系统),并于术后3～6个月采用金属烤瓷冠修复。修复后3、6、12个月对其进行定期临床检查、放射学检查及美学满意度调查。结果:修复后经12个月观察,90例病例全部成功,种植体无脱落,种植体与周围骨组织取得良好的骨结合,美学效果良好,修复后3、6、12个月满意度分别为90.7%、92.8%和95.5%。结论:在侧切牙位点行牙种植并应用GBR技术,可以取得良好的临床效果和较好的美学满意度。合理应用GBR技术,是解决侧切牙种植位点骨量不足的切实可行的方法。     

GBR技术应用于上前牙种植骨缺损的临床研究

目的：评估引导骨再生技术（GBR）在上前牙不同类型骨缺损种植修复中的效果。方法：对35例上前牙牙槽骨缺损种植的患者采用GBR技术进行骨增量,其中29例种植体周围骨缺损患者仅采用GBR技术,在植体植入骨床后,同期植入Bio～oss人工骨粉,表面盖Bio～gide可吸收性胶原膜;6例牙槽骨缺损患者采用移植自体块状骨联合Bio～oss人工骨粉,盖Bio～gide可吸收性胶原膜,5～6个月后行Ⅱ期种植体植入术。结果：所有患者在植体植入术后6～12个月临床观察种植体与骨结合良好,软组织形态与周围组织一致,行冠或桥修复,修复后12个月随诊复查无种植体失败。结论：引导骨再生技术皆能有效地对上前牙不同类型骨缺损进行骨增量,符合美学种植要求。     

Guided bone regeneration around endosseous implants using a resorbable membrane vs a PTFE membrane

The aim of the present experimental pilot study was to assess bone regeneration underneath resorbable barrier membranes vs non-resorbable extended polytetrafluoroethylene (ePTFE) membranes in peri-implant defects. Two implants were inserted into surgically created defects on each side of the mandibles of 6 adult beagle dogs 3 months after extraction of all premolar teeth. One implant on each side was covered with a porous polylactic acid membrane or a ePTFE membrane, respectively, while the second implant served as control. Fluorochrome labelling was administered during the 1st, 5th, 12th and the 18th week. Three animals each were evaluated after 3 and 6 months. Bone regeneration was assessed by measuring the distance from the first fluorochrome label to the level of the regenerated bone immediately adjacent to the implant surface and to the top of the newly formed alveolar contour both on the lingual and buccal side. The increase in bone height was significantly higher compared to the controls under both barrier membranes after 3 months at the top of the alveolar crest but not immediately adjacent to the implant surface. After 6 months, bone height was significantly increased only at the top of the alveolar contour underneath the ePTFE membranes, while bone underneath the polylactic acid membranes showed signs of superficial resorption. It is concluded that guided bone regeneration underneath barrier membranes can restore alveolar bone contour but is not necessarily associated with a higher bone/implant contact. The use of resorbable membranes may be associated with untoward biological effects at later stages, when membrane degradation starts due to degradation products of the polymer material or decreasing membrane stability. Future efforts have to refine the relation between degradation kinetics, membrane porosity and mechanical properties of degradable barrier membranes to improve membrane performance.     

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。     

2种修复膜材料用于牙种植引导骨再生的临床效果比较

目的：比较2种修复膜材料用于牙种植引导骨再生的临床效果。方法：选择上海市静安区牙病防治所2017年9月—2018年9月行牙种植引导骨再生治疗的患者139例,按随机表法分为对照组（68例）和试验组（71例）,对照组应用博特医用胶原修复膜引导骨再生,试验组应用海奥口腔修复膜引导骨再生,术后6个月随访记录修复情况,分别比较2组修复成功率和并发症发生率,并评价成骨厚度和高度、植骨厚度和高度,以及水平和垂直骨生长情况。采用SPSS 20.0软件包对数据进行统计学分析。结果：术后6个月,对照组修复成功率为85.29%（58/68）,试验组为95.77%（68/71）,差异有统计学意义(P<0.05);2组植骨厚度和植骨高度无显著差异(P>0.05),试验组成骨厚度、成骨高度、水平骨生长和垂直骨生长均显著高于对照组(P<0.05);对照组并发症发生率为25.00%,显著高于试验组的12.67%(P<0.05)。结论：海奥口腔修复膜引导骨再生的修复成功率优于博特医用胶原修复膜,可更好促进骨和植骨生长,疗效显著,安全性更高,更适合用于牙种植引导骨再生。     

Platelet-rich plasma may not provide any additional effect when associated with guided bone regeneration around dental implants in dogs

OBJECTIVE: The aim of this study was to evaluate histometrically bone healing in surgically created dehiscence-type defects around titanium implants treated with an association of platelet-rich plasma (PRP) and guided bone regeneration (GBR). MATERIALS AND METHODS: Ten male adult mongrel dogs were used, from which the three low premolars (P2, P3, P4) and the first molar were extracted. Three months after teeth extraction, two implant sites were bilaterally drilled, buccal bone dehiscences were created and four titanium implants were placed. Dehiscences were randomly assigned to the following groups: (1) PRP, (2) GBR, (3) PRP+GBR and (4) control. After 3 months, the animals were sacrificed and the implants and adjacent hard tissues were processed for undecalcified sections. Bone-to-implant contact (BIC), bone density within the limits of implant threads (BW), bone density (BD) and new bone area (BA) in a zone lateral to the implant corresponding to bone defects were obtained and measured. RESULTS: Intergroup analysis (two-way ANOVA -alpha=5%) demonstrated that when PRP was utilized,no differences were observed for all parameters (P>0.05). However, significant differences were observed for BIC and BW toward membrane-treated groups (P<0.05). CONCLUSION: Within the limits of this study, it was concluded that PRP does not exert additional effects on bone healing in bone defects created around dental implants and treated by GBR.     

Vertical ridge augmentation with guided bone regeneration in association with dental implants: an experimental study in dogs

AIM: To evaluate the effect of using guided bone regeneration (GBR) with a titanium-reinforced e-PTFE membrane in alveolar bone defects with titanium implants. MATERIAL AND METHODS: Following extraction of three mandibular premolars and a molar on both sides of the jaw in three dogs, alveolar bone defects (depth: 5-7 mm) were produced. After 4 months, three implants were inserted into each defect to a depth of approximately 4 mm, so that their coronal portion was protruding about 5 mm. Four sides in the dogs were assigned to a test group and the remaining two sides to a control group. The 12 implants in the test group were covered with a reinforced e-PTFE membrane. The space under the membrane was filled with peripheral venous blood from the animal, and the flaps were sutured over the membrane. The six control implants received no membrane before the suturing of the flaps to complete wound closure. The animals were sacrificed after 6 months, and non-decalcified histological specimens of the implants and surrounding tissues were prepared. RESULTS: Histologic and histomorphometric analyses revealed a significantly (Mann-Whitney test; P=0.08) larger amount of bone fill in the test group (mean=57.42%) than in the controls (mean=11.65%), and clinical evaluation of one test site showed that the implants were completely covered with tissue resembling bone. In most of the specimens, bone had grown in height close to, or in direct contact with the membrane. However, the new bone generally was not in direct contact with the implants. Regularly, a zone of dense connective tissue was interposed between the implants and the newly formed bone. CONCLUSION: The formation of even considerable amounts of bone following vertical ridge augmentation with GBR and implants was not accompanied by predictable osseointegration of the implants.     

引导骨组织再生膜应用于自身骨移植的研究现状

自身骨移植是种植术前骨增量的一种重要的技术手段。对于在常规骨移植后是否在移植物上覆盖引导骨组织再生膜,临床上存在着较大争议。笔者拟就引导骨组织再生膜在自身骨移植中的应用研究作一综述。     

上颌前牙区单牙种植钛膜引导成骨的美学效果观察

目的上颌前牙单牙种植采取不可吸收性无孔纯钛膜进行引导骨再生,对成骨效果以及修复后软组织美学效果进行观察。方法 2004年6月至2009年12月,在北京大学口腔医学院种植中心,20例上颌前牙单牙缺失种植患者（男12例,女8例,年龄19~56岁,平均34.0岁）。种植体植入后唇侧颈缘出现裂开性骨缺损或唇侧骨板厚度小于等于0.5mm,采用少量自体碎骨和Bio-Oss骨粉充填骨缺损后,以钛膜覆盖植骨区,并用小膜钉固定。愈合5~6个月行Ⅱ期手术,取出钛膜,测量种植体唇侧骨板的厚度。Ⅱ期术后2个月进行种植修复。使用PES（pink esthetic score）评分对种植修复体周围软组织进行评价。结果 20例病例中,没有一例出现伤口的裂开及感染。20颗种植体均获得骨结合。种植体植入时,唇侧骨板的厚度平均0.23mm,种植Ⅱ期手术暴露种植体取出钛膜时,测量唇侧骨板的厚度为1.5mm~3.5mm,平均2.33mm,平均增加2.10 mm。PES平均得分为10.05±1.57。结论在上颌前牙区单牙种植时,采取钛膜引导成骨,解决种植体唇侧颈部骨板裂开性骨缺损及厚度不足效果可靠,牙龈软组织的近期效果良好。