固位钉式无冠粘接固定义齿修复单个中间牙缺失的临床应用

无冠粘接固定义齿 (crownlessbridgeworks,CBW )系统是利用粘接固位的固定义齿修复技术。其原理是首先将长1 6 5mm的固位钉粘接到缺牙区两侧基牙的邻面 ,桥体部以栓道形式插入固位钉的冠外拴附着体上并通过舌侧金属翼板粘接到基牙上达到固位目的。该项技术磨牙少 ,对基牙的损伤小 ,有望成为满足特定临床要求者的可行方法。本项研究旨在对其临床修复效果进行评价。1.资料与方法 :选择个别牙中间缺失病例 4 1例 ,其中前牙、前磨牙、磨牙缺失分别为 2 1、16、4例。牙位等同分组后 ,分别对其中 2 1例进行CBW系统 (CBW公司 ,荷兰 )粘接义齿固…     

传统型与微型固位体粘结固定义齿的粘结耐久性实验研究

目的:比较传统型和新型微型固位体粘结固定义齿的抗疲劳破坏能力。方法:将人前磨牙和磨牙各20颗间隔10mm配对包埋于树脂中建立单个磨牙缺失模型。随机等分为2组,分别进行传统的邻面轴沟、支托牙体预备和邻面备洞粘结预成微型固位体。制作Ni-Cr合金固定义齿,用树脂粘结剂PanaviaF粘结于模型上,经冷热循环机械载荷(TCML)咀嚼模拟疲劳实验后,用体视显微镜观察粘结面破坏、微渗漏情况并作非参数Mann-Whitney统计学检验。结果:实验过程中传统邻面轴沟固位组有2个双端、1个单端固位体完全脱落;微型固位体固位组无固位体脱落。传统组微渗漏程度高于微型固位体组,有显著性统计学差异(P=0.046)。破坏和裂纹多发生在粘结剂-金属界面。结论:微型固位体固位的粘结固定义齿的抗疲劳破坏能力优于传统的邻面轴沟固位型粘结固定义齿。     

玻璃纤维强化复合树脂前牙粘结桥临床应用初探

目的 :探讨前牙玻璃纤维强化复合树脂粘结桥 (GFRC RBFPD)修复方法和评价短期临床效果。方法 :收集修复门诊 3 0名前牙缺失病例 ,缺失 1颗牙者 2 7例 ,缺失 2颗牙者 3例。其中基牙不需牙体预备的 16例 ,少量牙体预备的 14例。采用STICK预浸透玻璃纤维强化的Sinfony复合树脂制作粘结桥。应用All Bond 2树脂粘结材料粘结修复体。临床进行定期检查 ,全面评价使用效果。结果 :2 6例 6个月后临床复查 ,2 3例 (88.5 % )GFRC RBFPD不松动 ,修复体完好 ,无折断、缺损或过度磨耗 ,无明显着色 ,固位体边缘与粘结剂界面临床观察结合良好。 2例 (7.7% )在使用中出现脱粘 ,1例 (3 .8% )折断。 2 4例 18个月后临床复查 ,其中 3例 (12 .5 % )脱粘 ,3例 (12 .5 % )折断 ;基牙的探诊出血与对照牙比较均有显著性差别 (P <0 .0 5 )。结论 :GFRC RBFPD是一种微介入、无金属的固定修复方法 ,向患者提供了传统固定桥以外另一种固定修复方式。其支架强度和粘结强度需进一步提高 ,临床应用效果应长期观察。     

氧化锆陶瓷悬臂树脂粘结固定义齿的远期疗效及对缺牙的影响

目的 探讨氧化锆陶瓷悬臂树脂粘结固定义齿(RBFDPs)的远期疗效及对缺牙的影响.方法 选择牙缺失患者91例进行氧化锆陶瓷悬臂RBFDPs修复,按照患者牙缺失因素分为3组,并对修复后即刻、3个月、3年后、5年后的修复体的固位、边缘密合性、美观、口腔卫生状况、牙体牙周健康等进行评价.采用SPSS 22.0软件包对数据进行...     

纤维强化硬质树脂粘结桥修复前牙缺失的临床应用

目的：评价纤维加强的硬质树脂粘结桥修复前牙缺失的临床效果。方法：收集我院口腔科门诊31例单个前牙缺失患者,其中25例无需磨牙或磨切少量牙,6例磨切约0.8mm牙体组织,以达到需要的咬合间隙,对31例单个前牙缺失病例,采用玻璃纤维作支架加强的dialogR硬质树脂粘结桥进行修复。结果：经12-50个月的临床随访观察,27例复诊的病人粘结桥修复体无松动、无脱粘、折裂和过度磨耗,无继发龋,修复体边缘无明显染色,粘结界面良好,色泽稳定,美观效果好。结论：纤维强化硬质树脂粘结桥间接修复体具有良好的抗磨性能,机械强度高,色泽稳定,对基牙损伤小,无金属,就诊次数少,椅旁操作时间短,坚固,美观,是一种单个前牙缺失希望固定修复又要求少磨牙患者的首选治疗方法。     

MK1冠外被动制锁式附着体义齿的临床应用

目的 探讨MK1附着体义齿修复远中游离缺失的临床效果.方法 33例双侧或单侧远中游离端牙缺失患者行MK1附着体义齿修复,随访2个月～2年.结果 1例修复2年时出现咀嚼痛,检查发现缺牙区牙槽骨吸收,重衬可摘义齿后症状消失.1例锁轴脱落,重配卡簧.其余患者反映义齿固位良好,异物感小.结论 MK1附着体义齿适宜修复远中游离端牙缺失.     

前牙和前磨牙金属铸造粘结桥的蜡型设计及制作

前牙和前磨牙金属铸造粘结桥的蜡型设计及制作西安铁路分局西安医院口腔科孔国庆西安医科大学口腔医学院易晓丽金属铸造粘结桥是近年来一种新型的固定义齿修复方法．金属铸造粘结桥通过对前牙的舌侧面前磨牙和第一恒磨牙的咬合面以咬合面沟窝为界限的舌侧部分的牙体组织进...     

前牙舌面翼板无卡环式可摘局部义齿

为了观察一种新的前牙缺失修复体的修复效果，作者设计一种舌面金属翼板无卡环式局部可摘义齿，人造牙材料可以是树脂或烤瓷临床应用１２例患者，结果表明该修复体美观，舒适，卫生，固位力强，牙体磨除少，有时还可同时修复缺失的后牙舌尖及防止食物嵌塞。作者认为该法可作为一种前牙缺失的美容设计，但必须掌握适应证。     

隐形义齿临床应用中常见问题和分析

隐形义齿是近年来出现的一种新型修复方法.其显著优点在于没有传统义齿所固有的金属卡环,美观舒适,磨除牙体组织少,但在临床应用中也逐渐暴露出一些问题.现对我科1996年以来隐形义齿戴入后出现的一些常见问题的原因和解决对策,报告如下:一般资料随访牙列缺损修复420例,其中男性196例,女性224例,年龄16-63岁.平均年龄36岁,单个前牙缺失修复140例,单个后牙缺失修复123例.连续2个以上上前牙缺失86例,连续2个以上后牙缺失37例,牙     

附着体固位可摘义齿临床应用

目的：观察不同类型附着体固位可摘义齿的临床效果。方法：采用冠外精密附着体、磁性附着体、套筒冠作为固位装置制作可摘义齿,对游离端缺失下颌义齿和多牙缺失病例32例进行修复。随访6个月～3年,对义齿美观舒适性、固位力、咀嚼功能、摘戴适应情况及基牙松动、义齿下沉加衬情况进行观察。结果：所有病例对义齿美观舒适、固位力、咀嚼功能均感满意。30例对义齿摘戴适应（93．75％）,2例感到义齿摘取不便（按扣式、套筒冠义齿各1例）。结论：附着体固位可摘义齿兼有固定、活动义齿的优点,能达到良好的临床修复效果。     

Two-year clinical trial of resin-bonded fixed partial dentures incorporating novel attachments

PURPOSE: This controlled clinical trial evaluated the clinical performance of a new resin-bonded fixed partial denture (FPD) system and compared the clinical performance with that of conventional FPDs. MATERIALS AND METHODS: Resin-bonded FPDs replaced 12 single anterior and 9 premolar missing teeth in 20 healthy patients. Conventional three-unit FPDs (metal-ceramic crowns or complete cast-metal crowns) replaced 10 single anterior and 10 single posterior missing teeth in 20 age-matched controls. Retention, marginal integrity, periodontal condition of the FPDs, esthetics and hygiene of pontics, and secondary caries were clinically evaluated immediately, 1 month, and 2 years after cementation. RESULTS: After 2 years, no failure was observed in the resin-bonded or conventional FPDs because of debonding from the abutment teeth. All clinical results evaluated for both groups were satisfactory or acceptable. No secondary caries was found in either group. Fisher's exact test and/or continuity-corrected chi-square test showed no significant differences of satisfactory rates between the resin-bonded and conventional FPDs for all variables evaluated. CONCLUSION: Short-term clinical results indicate that resin-bonded FPDs may be used as fixed prostheses to replace lost single anterior or premolar teeth with minimum preparation of abutment teeth. This restoration did not adversely influence pulpal or periodontal health. However, a 2-year clinical trial for a new FPD can only provide preliminary data, and longer term observations are clearly necessary.     

固定义齿修复前牙缺失的临床失败病例分析

目的:研究金属烤瓷桥及粘接桥修复前牙缺失的失败病例,分析两种修复方式的优缺点及适应症。方法:收集门诊前牙缺失、固定义齿修复病例,分成烤瓷冠桥修复组和粘接桥修复组。检查记录修复后即刻效果及修复半年后、修复2年后的临床失败病例情况,进行对比分析。结果:烤瓷冠桥组失败病例主要为牙龈变色、崩瓷、牙龈炎、基牙牙髓炎、根尖病变等;粘接桥组失败病例主要为修复体松动、脱落、继发龋等。结论:两种固定义齿修复前牙缺失各有优缺点、适应症,临床应谨慎选择使用。     

老年人可摘局部义齿修复对基牙的影响

目的:分析研究老年人可摘局部义齿修复后对基牙的影响,探讨其原因及预防措施。方法:对95例牙列缺失后的老年人行冷弯卡环固位式可摘局部义齿修复,记录和比较戴可摘局部义齿后基牙和非基牙的龋坏率和缺失率,用χ2检验分析其结果有无差异,并对影响基牙的原因进行分析。结果:戴用可摘局部义齿5a后,基牙的患龋率(17.38%)显著高于非基牙(7.10%);因牙折、牙周病松动及龋坏无法保留而拔除的基牙缺失率(27.01%)也显著高于非基牙(7.79%)(P<0.01)。结论:冷弯卡环固位可摘局部义齿修复后在一定程度上可增加老年人基牙的患龋率和缺失率。     

下颌侧切牙缺失固定桥设计基牙受力情况的实验研究

目的比较双端及单端固定桥修复下颌侧切牙缺失时基牙的受力情况。方法应用ANSYS软件,通过三维有限元法建立4种固定桥模型,分别以中切牙和尖牙、中切牙、尖牙、尖牙和第一前磨牙为基牙模拟下颌侧切牙缺失,分析基牙最大受力部位和大小。结果单端固定桥修复模型中,以中切牙作为单一基牙时,基牙根尖受力值最大;双基牙单端桥基牙根尖受力最小;双端固定桥两基牙根尖受力分布最均匀。结论下颌侧切牙缺失患者以双端固定桥修复时,基牙受力最合理;单基牙单端桥设计,中切牙受力大于尖牙,而双基牙的单端桥修复形式较单基牙理想。     

Retrospective survival analysis of 3-unit fixed-fixed and 2-unit cantilevered fixed partial dentures

To evaluate the cumulative survival (CS) rates of fixed partial dentures (FPDs) retained by full-veneer retainers, and those of resin-bonded FPDs provided by graduating dental students for the replacement of a single missing tooth. In 168 patients, 61 3-unit fixed-fixed FPDs and 25 2-unit cantilevered FPDs retained by full-veneer retainers, and 77 3-unit fixed-fixed resin-bonded FPDs and 47 2-unit cantilevered resin-bonded FPDs, were examined for their retention and integrity. The periodontal health, endodontic status and coronal tissues of all abutment teeth were also evaluated. The survival rates of these various designs were analysed with the Kaplan-Meier method. The mean age of all FPDs was 31 months. At 48 months after their insertion, 3-unit FPDs retained by full-veneer retainers had a CS rate of 82%, followed by 2-unit resin-bonded FPDs at 81%, 2-unit FPDs retained by full-veneer retainers at 77%, and 3-unit resin-bonded FPDs at 63%. No significant difference was found between the four designs (P>0.05). Up to both 48 and 60 months, the most common causes of failure were endodontic for FPDs retained by full-veneer retainers, and dislodgement for resin-bonded FPDs. The 3-unit fixed-fixed FPDs retained by full-veneer retainers had the most favourable prognosis after 48 months for replacing a single missing tooth, but the difference between designs was not statistically significant.     

Replacing an anterior metal-ceramic restoration with an all-ceramic resin-bonded fixed partial denture: a case report

Since the first resin-bonded fixed partial denture was described, this adhesive technique for splinting mobile teeth has developed into a conservative method for replacing missing teeth. Heat-pressed all-ceramic materials have been introduced for the fabrication of 3-unit fixed partial dentures in the anterior and premolar region. This clinical report describes the replacement of a conventional partial coverage metal-ceramic resin-bonded fixed partial denture with an all-ceramic resin-bonded fixed partial denture in the anterior maxillary area.     

下颌固定桥基牙牙槽骨单侧吸收对基牙应力分布的影响

目的:研究双端固定桥基牙牙槽骨单侧吸收对基牙应力分布的影响。方法:采用螺旋CT扫描获取健康人下颌骨、牙齿、牙周支持组织的二维图像,通过图像合成软件建立三维数字模型,并应用三维有限元分析软件生成下颌后牙三单位固定桥的三维有限元分析模型。在相同垂直和水平载荷情况下,分析基牙牙槽骨单侧吸收时固定桥各基牙的应力分布。结果:当前磨牙端基牙牙槽骨单侧吸收达25%、磨牙端基牙牙槽骨无吸收时,前磨牙端基牙开始出现应力集中;当磨牙端基牙牙槽骨单侧吸收达35%、前磨牙端基牙牙槽骨无吸收时,磨牙端基牙开始出现应力集中。结论:下颌后牙双端固定桥基牙应力分布与基牙牙槽骨吸收形式密切相关,但二者之间不是线性关系而是存在临界区,基牙牙槽骨单侧吸收的程度对基牙应力分布的影响弱于多侧吸收。     

Survival rates of resin-bonded, glass fiber-reinforced composite fixed partial dentures with a mean follow-up of 42 months: a pilot study

STATEMENT OF PROBLEM: Although short-term clinical data exist for resin-bonded, glass fiber-reinforced composite fixed partial dentures (FPDs), long-term data are needed. PURPOSE: The survival rates of 29 resin-bonded, glass fiber-reinforced composite fixed partial dentures were evaluated in this clinical study for periods of up to 42 months. MATERIAL AND METHODS: FPDs were fabricated to replace 1 to 3 missing maxillary or mandibular teeth of 29 patients not able to be treated with conventional FPDs. Originally, there were 37 patients (the drop-out rate was 22%). The FPDs were retained with wings, inlays, complete coverage crowns, or combinations of these that were bonded to tooth structure. The FPD frameworks were made of continuous unidirectional E-glass fibers with a multiphase polymer matrix and light-polymerized particulate composite veneer. The patients were recalled for examinations, where a general dental examination was performed, 1 to 3 times per year for up to 63 months (minimum 24 months, mean 42 months). Partial or complete total debonding of the FPD or the framework fracture was considered a treatment failure. The data were analyzed with the Kaplan-Meier survival test (alpha=.05). RESULTS: Two resin frameworks fractured, and 3 frameworks were debonded. Kaplan-Meier survival probability at 63 months was 75%. Three of the failed FPDs were rebonded or repaired in situ, producing a functional survival rate of 93% after rebonding or repairing (mean survival time was 55 months). CONCLUSION: The results of this clinical study of 29 prostheses suggest that glass fiber-reinforced FPDs may be a possible alternative to cast metal resin-bonded FPDs. These restorations were successfully used as multiple-unit prostheses that employed a variety of abutment tooth preparation designs.