太极扣附着体义齿修复牙列游离缺损的效果研究

目的研究太极扣附着体可摘局部义齿修复肯氏Ⅰ、Ⅱ类牙列缺损的临床效果。方法采用太极扣附着体16副,修复肯氏Ⅰ类缺损4例,肯氏Ⅱ类缺损8例。修复后3~15个月临床复查,通过患者主诉、临床检查及X线片观察其修复效果。结果患者对太极扣附着体可摘局部义齿修复后效果满意,异物感小,美观,易适应,固位良好,咀嚼相对有力。其中8例较以前曾使用过的传统可摘局部义齿明显感觉舒适、美观。有1例出现附着体阳性部件变形进行更换,其余使用良好。结论太极扣附着体在修复肯氏Ⅰ、Ⅱ类牙列缺损时是一种方便、可靠的修复方式。     

冠外附着体义齿修复游离端牙列缺损的临床应用

目的观察Ceka冠外精密附着体应用于游离端牙列缺损修复的临床疗效。方法58例游离端牙列缺损患者,其中单侧游离端牙缺失35例,双侧游离端牙缺失23例。共制作Ceka冠外附着体义齿58件,每件义齿含2副附着体或1副附着体和1个联合卡环。修复后追踪1~6年。结果Ceka冠外附着体义齿美观、舒适,固位稳定性较好,咀嚼效能较高,并发症少。结论Ceka冠外附着体是一种较为理想的游离端牙列缺损修复的固位体。     

采用ERA弹性附着体修复牙列游离端缺损

牙列游离端缺损是口腔修复临床工作中常见的一类病案,通常采用卡环固位的可摘局部义齿修复。但义齿修复后往往出现义齿固位不良、稳定性差的问题,表现为义齿的下沉、翘起、摆动,从而导致黏膜压痛、基牙受扭力创伤、咀嚼效率差,因而修复效果不佳。此外,近年来口腔患者对美观的要     

冠外附着体在游离端牙列缺损修复中的临床应用及近期观察

目的：探讨游离端牙列缺损患者进行冠外附着体义齿修复的临床效果。方法：对18例游离端牙缺失的患者,设计5种冠外附着体作为固位体进行修复治疗。随访1～3年,观察患者对义齿使用的满意情况,复查检查基牙和修复体的情况。结果：患者对冠外附着体义齿的美观非常满意,对义齿的固位稳定效果和咀嚼功能均满意。临床检查未见基牙松动,1年后,出现2例基牙牙龈炎,1例附着体阳性构件松动;2年后,出现2例义齿松动和1例义齿下沉;3年后,出现1例基牙牙龈炎,3例义齿松动和2例义齿下沉。所有出现异常的患者经对症治疗后义齿均能继续使用。结论：对于游离端牙缺失的患者,采用冠外附着体义齿修复可获得良好的临床效果。     

精密附着体义齿修复游离端牙列缺损的临床应用

目的　应用精密附着体固位型可摘义齿修复游离端牙列缺损 ,评价其临床修复效果。方法　采用拴体拴道式、插销式及根面磁性精密附着体 ,为 11例游离端牙列缺损患者制作 11件精密附着体义齿 ,观察修复效果。结果　随访 0 5～ 2年 ,患者均感义齿美观舒适 ,固位稳定性强 ,咀嚼功能好 ,检查基牙无病变。结论　精密附着体固位型可摘义齿用于游离端牙列缺损 ,修复效果良好。     

Ceka附着体在游离端牙列缺损修复中的临床效果观察

目的观察Ceka摩擦式冠外精密附着体应用于游离端牙列缺损修复的临床疗效.方法 18例游离端牙列缺损患者,制作18件Ceka附着体义齿,每件义齿设计2副Ceka附着体或1副Ceka附着体和1个联合卡环,并对其进行1～24个月的临床疗效观察.结果 Ceka附着体义齿美观、舒适、稳固、咀嚼有力.结论 Ceka摩擦式冠外精密附着体是一种较理想的游离端牙列缺损修复的固位体.     

游离端可摘局部义齿附着体及其基牙、支持组织的应力分析

游离端缺失时远中无基牙支持,承受(牙合)力时应力的分布较特殊,是修复临床复杂但又常见的情况.附着体是由阴型和阳型两部分组成的精密嵌合体.应用附着体固位的可摘局部义齿(RPD)有良好的固位与稳定等优点.正确的选择适当类型的附着体进行RPD修复,需要分析修复体受力后基牙和剩余牙槽嵴的受力特点,以及减小应力或使其分布更为合理的方法.本文对关于游离端RPD附着体的一些相关理论和最新应力研究结果加以综述,以期帮助临床工作.     

快套式附着体义齿修复未端游离缺损的临床应用

笔者自2002年以来，将快套式附着体可摘局部义齿应用于8例单侧未端游离牙列缺损患者的修复，经随访观察，效果较好。     

附着体在牙列缺损修复中的应用

牙列缺损是口腔修复科最常见的疾病之一.牙列中从缺失一个牙到仅剩一个牙都称其为牙列缺损.对于牙列缺损,可以采用种植义齿、固定义齿或可摘局部义齿修复.附着体(attachment)能用于上述各类义齿修复中.     

MK1附着体义齿返修13例原因及改良修复方式分析

目的：探讨MK1附着体义齿修复病例返修的原因及改良修复方式分析。方法：对MK1附着体义齿修复的13 例返修病例, 分别从力学和义齿制作工艺角度分析返修的原因。结果：返修的原因中,部分是由于MK1附着体自身设计的限制,部分因技术引进,初期经验不足,对义齿设计和制作环节中的技术关键有所忽略所致;针对返修病例做出相应改进, 随访1～1.5a后效果良好。结论：临床使用MK1附着体时,修复医师应熟练掌握MK1附着体的特征和适应证,加强医患沟通;对患者及时随访,提高MK1附着体义齿修复的成功率。     

Maxillary Rehabilitation Using Fixed and Removable Partial Dentures with Attachments: A Clinical Report

Despite requiring dental crown preparation and possible root canal treatment, besides the difficulty of clinical and laboratory repairs, and financial burden, the association between fixed (FPD) and removable partial dentures (RPD) by means of attachments is an important alternative for oral rehabilitation, particularly when the use of dental implants and FPDs is limited or not indicated. Among the advantages of attachment‐retained RPDs are the improvements in esthetics and biomechanics, as well as correction of the buccal arrangement of anterior teeth in Kennedy Class III partially edentulous arches. This article describes the treatment sequence and technique for the use of attachments in therapy combining FPD/RPD.     

两种游离端半精密附着体可摘局部义齿的应力分析

目的:研究双侧游离缺失活动义齿使用两种不同类型的半精密附着体固位时周围支持骨的表面应力。方法:采用电阻应变测量法在人体下颌骨标本上测量以冠内栓道式及冠外垂直杆式半精密附着体固位的双侧游离缺失活动)固定联合修复体的表面应力值并做统计分析。结果:冠内附着体在基牙周围牙槽骨上产生的总体应力较大,而冠外附着体在缺牙区牙槽嵴和近缺隙侧基牙远中颈部牙槽嵴上产生的应力较大。结论:冠内附着体适用于远中基牙牙周条件良好的情况,而冠外附着体则适用于缺牙区牙槽嵴条件良好、远中基牙条件相对欠佳的情况。     

The Change in Retentive Values of Locator Attachments and Hader Clips over Time

Purpose: The aim of this study was to examine early changes in retentive values of implant overdenture attachments during multiple pulls.
Materials and Methods: Two implant attachment systems (Hader bar and clip, Locator system) were used in this study. The experimental groups were divided into yellow Hader clips, white Locator attachments, and green Locator attachments. Each group consisted of 21 matrix attachments. The attachments were placed into a custom-made acrylic resin block seated passively on another acrylic block containing a Hader bar or two Locator abutments with different angulations. Each attachment was subjected to 20 consecutive pulls using a universal testing machine. The peak load-to-dislodgement of the attachments after each pull was documented, and the percent reduction of the peak load-to-dislodgement was calculated. One-way ANOVA and Tukey's honestly significant difference test were used for data analyses. A p ≤ 0.05 was considered significant.
Results: There was a significant difference in the percent reduction in peak load-to-dislodgement between the attachments after the first pull ( p = 0.005) and after the final pull ( p = 0.0001). The yellow Hader clips exhibited the least percent reduction in peak load-to-dislodgement (6.50 ± 3.59%) after the first pull, followed by the white Locator attachments (8.60 ± 4.42%); the green Locator attachments exhibited the greatest reduction (11.05 ± 4.94%).
Conclusion: The results of this in vitro study demonstrate that retentive values of the Locator attachments are reduced significantly after multiple pulls. Although this reduction might not be noticeable to the patient, it is recommended that the clinician place and remove the overdenture multiple times before delivery.     

New Clasp Assembly for Distal Extension Removable Partial Dentures: The Reverse RPA Clasp

Several clasp types are used in distal extension removable partial dentures. In some cases the terminal abutments have only distal retentive undercuts that can be occupied by bar clasps; however, bar clasps may be contraindicated with no suitable alternative. This article presents a reasonable solution by introducing a new clasp design as a modification to the well‐known RPA clasp. The design includes a mesial rest, proximal plate, and buccal retentive arm arising from the rest and extending to reach the distal retentive undercut.     

附着体数量分布对固位力影响的测试

目的：对不同数量及分布的钉幅附着体固位力进行测试，为临床应用提供参考依据。方法：分别制作不同的附着体测试模型，用固位力测试仪进行测试。结果：附着体越多，固位力越大；3个附着体固位，受相互制约作用影响，平均每个附着体的固位力要大于单个附着体的固位力。附着体处加载所测的固位力明显大于单个附着体的固位力，显示其协同作用，附着体安置的距离影响固位力的大小，距离远固位力增加。结论：使用两个附着体的设计，其固位力一般都能满足临床需要，过多使用附着体可能导致脱位困难。     

后牙种植修复体咀嚼效能的初步比较研究

目的:将后牙常规义齿与种植义齿的修复效果进行定量比较。方法:选择单侧后牙缺失4颗以下,无其他口腔疾病者无口腔修复史者90例,牙位等同,分为活动组,固定组,种植组各30例。正常牙列对照组30例。用改良吸光度法测量并比较单侧后牙缺失患者行活动义齿,固定义齿及种植义齿修复前后的咀嚼效能。结果:活动修复后咀嚼效能与正常牙列人群咀嚼效能之间有显著性差别(P<0.05);固定修复后,种植修复后与正常牙列咀嚼效能无显著差别(P>0.05)。结论:活动义齿、固定义齿、种植义齿修复均能有效提高后牙缺失患者的咀嚼效能,但活动义齿效果最差。固定义齿和种植义齿修复均能使后牙缺失患者的咀嚼效能提高至与正牙列人群相似。