可摘局部义齿与龋病的关系

可摘局部义齿与龋病的关系福建省漳州市中医院口腔科黄启超，黄静采用可摘局部义齿，在修复后常需作各种跟踪治疗。为了探讨龋齿与可摘局部义齿之间的关系，我们观察了在我科修复中的８０例可摘局部义齿的患者，结果报告如下：修复可摘局部义齿８０例，男性４７例，女性３...     

我国复杂可摘局部义齿修复的发展现状与问题

可摘局部义齿修复是口腔修复学的重要组成部分 ,是适用范围非常广泛的修复设计。近年来 ,随着固定义齿与种植义齿修复技术的发展 ,可摘局部义齿修复在口腔修复中所占比重有所下降。另一方面 ,可摘局部义齿修复的水平也有了较大提高 ,功能与美观恢复更加完善 ,舒适度更加理想。尽管如此 ,在可摘局部义齿 ,尤其是复杂的可摘局部义齿修复过程中 ,仍存在着一些问题。为此 ,中华口腔医学会口腔修复学科专业委员会 1 999年秋在成都主办了全国复杂可摘局部义齿修复专题研讨会 ,与会专家就复杂可摘局部义齿修复的现状与发展等问题进行了深入的讨论。…     

可摘局部义齿计算机辅助设计与辅助制作研究应用进展

计算机辅助设计、数控切削、增材制造等数字化技术越来越广泛地应用于口腔修复临床。这些技术的应用不仅改变了可摘局部义齿的设计和制作流程,提高了义齿生产效率,而且改变了义齿的设计和制作理念。关于可摘局部义齿计算机辅助设计与辅助制作的研究方兴未艾,近年涌现了大量研究报道,包括选区激光熔化金属粉末等新材料的性能研究,义齿固位体、连接体、人工牙等组件的创新性设计,支架、基托和人工牙的高精度成形,应用新材料、具有新结构的可摘局部义齿的精度、适合性和力学性能定量评价,以及对可摘局部义齿的临床评价等诸多方面,本文针对近年可摘局部义齿计算机辅助设计与辅助制作研究应用最新进展进行系统论述。     

隐形义齿基托与牙周病关系的临床观察

关于可摘局部义齿与牙周病之间的关系,国内外学者进行了大量研究[1].对于隐形义齿这种新兴而特殊的可摘局部义齿与牙周病关系的研究,则少见报道.因隐形义齿固位方式及支持方式,与普通可摘局部义齿存在一定的差别,故基托与邻牙游离龈的距离问题,不宜套用可摘局部义齿的程式.本研究搜集268例隐形义齿修复的患者,并随机分成三组,然后分三种距离磨除隐形义齿与游离龈龈沟接触处基托,6个月后就诊进行比较研究,探讨三种距离下,隐形义齿基托与牙周病及义齿固位力的关系.     

弹性树脂与铸造支架在义齿修复中的应用(附28例报告)

目的设计一种联合义齿以解决传统可摘局部义齿易显露金属卡环影响美观的问题.方法用弹性树脂制作可摘局部义齿的基托及唇侧固位体,结合铸造支架,制作联合可摘局部义齿,修复28例因多数后牙缺失或前后牙均有缺失须在前牙区设计固位体的病例,行联合义齿修复.结果联合可摘局部义齿具有良好的美观效果及咀嚼功能.结论联合可摘局部义齿兼有弹性树脂和铸造支架的优点,可作为临床上选用的一种修复体.     

上海市民营加工所可摘局部义齿制作质量评价

目的:评价上海市民营加工所可摘局部义齿制作质量。方法:设计可摘局部义齿质量量表,随机抽取3家民营加工所,制作263件可摘局部义齿(树脂基托义齿55件,弹性树脂义齿90件,铸造支架义齿118件),用单盲法在目测和初戴2个环节12个条目作质量评价,分满意,可接受,勉强接受和不满意4个等级。用SPSS17.0软件包对数据进行统计学分析。结果:263件可摘局部义齿质量评价满意占33.2%,可接受42.3%,勉强接受和不满意24.5%,经方差分析,3种类型的可摘局部义齿质量评分差异有统计学意义(P<0.01),弹性树脂义齿高于铸造支架义齿,铸造支架义齿高于树脂基托义齿。结论:上海市民营加工所可摘局部义齿制作质量需要提高。     

种植义齿与可摘局部义齿修复后患者评价的分析

目的比较牙列缺损患者行可摘局部义齿和种植固定义齿修复的主观感受。方法对23例戴用可摘局部义齿后又行种植义齿修复患者作种植修复前和修复后问卷调查。结果与可摘局部义齿相比,种植固定义齿在咀嚼功能、舒适、固位等方面存在显著差别(P<0.01)。结论种植固定义齿修复能更好地提高口腔功能,满足患者需求。     

分割式及普通可摘局部义齿缺牙区黏膜的三维有限元分析

目的:研究并比较戴用分割式可摘局部义齿与普通可摘局部义齿在不同载荷下缺牙区黏膜的应力情况。方法:选择上颌第二双尖牙、第一磨牙缺失伴基牙有I度松动的患者1例,通过螺旋CT扫描获得上颌二维断层图像。在Pro/Engineer中进行模型的建立,然后导入ANSYS Workbench软件中,进行网格化分和三维有限元分析。结果:斜向、垂直载荷下,戴用分割式可摘局部义齿与戴用普通可摘局部义齿的缺牙区黏膜Vonmises力的数值范围有明显差异。水平载荷下,二者有一定差异。3种载荷下均为戴用分割式可摘局部义齿较大。3种载荷下二者的Von mises力分布情况相似。结论:从生物力学的角度证明,对基牙有I-II度松动以及牙周健康状况不佳的患者,行分割式可摘局部义齿修复是可行的。可以认为,分割式可摘局部义齿有效地起到了保护基牙的作用。     

(牙合)垫式可摘局部义齿的临床应用

目的 总结牙合垫式可摘局部义齿的制作和疗效.方法 对30例牙合垫式可摘局部义齿修复病例,随访1、3、6、12个月,检查义齿戴用情况,包括美学评价、牙合关系、颞下颌关节症状、咀嚼功能等.结果 牙合垫式可摘局部义齿修复效果满意,1、3、6、12个月评价有效率分别为93.3%、100%、100%、100%.结论 采用牙合垫式局部义齿修复效果比普通可摘局部义齿好.     

可摘局部义齿的组成和设计(一)

为了帮助读者系统了解和掌握可摘局部义齿的临床与技工室的操作标准,本刊将在教学(?)地拦分期登载可摘局部义齿的组成,模型观测与设计、设计转移、填凹、缓冲、加压封闭、复制模制作与处理,支架蜡型制作、铸道、包埋、烧结、铸造、支架磨平与磨光、支架试戴、取纠正模型印模、人工牙选择与排牙、装牙盒、塑料填塞与烧结、脱牙盒打磨,局部可摘义齿完成初戴等过程。并简要介绍附着体式、悬锁式、栓结式和覆盖式等特殊局部义齿的基本结构和要求,作为一种函授教材形式供读者在实践中参考和学习指导,使可摘局部义齿的制作达到规范化。从而改进和提高可(?)局部义齿的修复质量,更好地为病人服务。     

Development of the Curvex toothbrush

This is a first-hand narrative of the steps in developing a new toothbrush from concept through initial marketing. The design seeks to provide the softest bristles consistent with effective plaque removal. Patent protection, incremental design and testing, and accurate market analysis have been essential steps in the process.     

无托槽隐形矫治器推上颌磨牙远移的效率及影响因素研究进展

无托槽隐形矫治器在推上颌磨牙远中移动方面具有显著优势。但由于上颌解剖结构不同及患者依从性差异等因素,上颌磨牙远中移动的实际移动量与设计移动量间存在一定差异,影响最终矫治效果。该文就患者基本情况、上颌磨牙及周围解剖结构、方案设计方面进行综述,以期为正畸医生设计上颌磨牙远移方案提供参考依据,并提高远移实现效率。     

Swinglock removable partial dentures: Where and when

The where and when of swinglock removable partial denture treatment planning have been presented, including indications, contraindications, and advantages. While the principles asserted in this article do not represent a panacea to partial denture design, the swinglock design concept does provide another treatment alternative for select and difficult biomechanic situations.     

Computer-assisted design in removable partial dentures. Expert system and software for framework tracing

Stelligraph, a software program for designing the removable partial denture offers many possibilities in computer assisted technology. The design can be realized on any particular case, based on three different concepts. This software program can also provide on individual, manual and personalized design this offening complete freedom in the conception. This software program is an expert system in removable partial denture by providing the general practitioner with a rational design as well as clinical guidance for oral rehabilitation.     

Classification system for implant-supported overdentures.

A classification system for implant-supported overdentures is proposed in this article. Various types of implant-supported overdentures have been described in the literature, but there is considerable difference in the function of these designs. For example, an overdenture supported by freestanding implants does not have the retentive elements provided by a bar and, therefore, is less retentive than an overdenture supported by a straight bar. If more than two implants are configured in an arch, and if indirect retention is incorporated into the bar and overdenture design, function is improved over that of a straight-bar design. Another classification of overdenture is one that receives all of its support from an implant-supported bar with tissue contact to provide a mucosal seal. This tissue contact does not provide any actual support. By accepting and using this classification system, the clinician can design an overdenture that is appropriate for the functional requirements of the patient being treated.     

A new design for a hybrid prosthesis supported by osseointegrated implants: 1. Technical aspects.

Maxillary prosthetic restorations on osseointegrated implants are often problematic because of implant location, orientation, and need for lip support. A new design for a hybrid maxillary prosthesis that will provide good esthetics and phonetics, as well as ensure optimum conditions for oral hygiene and patient comfort, is proposed. The design includes separate support, lateral stabilization, and retention. Support is derived from elevated areas at the midline and on the extensions of a bar screwed to dental implants ad modum Br?nemark. Lateral stabilization is obtained by a removable framework closely fitting the bar. Four precision attachments provide adjustable retention without influencing support. Technical aspects of the procedure are described.     

Modified resin-bonded design for stabilization of mobile teeth: technique and clinical observations

A design modification of the tooth preparation and framework design is presented to further enhance stabilization of mobile teeth with resin-bonded splints. An appropriate shade of composite resin is placed to restore an esthetic contour, cover the incisal edge framework extensions, and provide occlusal function as indicated. Patient reviews are presented to demonstrate the principles of treatment, versatility, and limitations of this treatment modality.     

Modifications in the Design and Fabrication of Mandibular Osseointegrated Fixed Prostheses Frameworks

This article presents the advantages of design modifications and fabrication techniques for mandibular osseointegrated fixed prostheses. These design features provide definite mechanical advantages and access for oral hygiene maintenance. A review of implant surface properties is presented that affect bacterial plaque and food debris adherence. The suggested design involves a lingual contour of the cast alloy suprastructure to yield an environment for reduced plaque and debris accumulation. The right angle cross-section ensures strength and increased stress distribution in structurally compromised areas when compared with conventional implant framework designs.     

All-on-4种植固定修复的咬合设计

随着社会老龄化增长,无牙颌患者越来越多,无牙颌种植固定修复已广泛应用于临床。关于天然牙和传统义齿的咬合有比较多的研究,但是关于All-on-4种植固定修复的咬合方面的文献却比较有限。本文就All-on-4种植固定修复的咬合设计进行综述,以期为获得长期稳定的临床修复治疗提供参考。     

中国人颞下颌关节骨性结构的三维测量和聚类分析

目的    通过对中国人颞下颌关节骨性结构进行三维测量和聚类分析,为人工关节假体的设计和选型提供依据。方法    选取2011年1月至2015年12月在上海交通大学医学院附属第九人民医院因非颞下颌关节疾病就诊,进行颌面部CT扫描的中国人患者448例（797侧正常颞下颌关节）进行研究。采用Proplan CMF 1.4软件对其颌面部CT扫描数据进行三维重建,选择13项特征性指标对关节窝及髁突进行三维测量,并对数据进行统计分析和聚类分析,以确定人工关节假体的设计类型。结果    初步建立了中国人颞下颌关节骨性结构的解剖数据库,13项测量指标性别差异均有统计学意义。聚类结果显示中国人的颞下颌关节窝分为3种类型,髁突分为4种类型（判别分析：关节窝数据准确率97.24%、髁突-下颌支数据准确率94.98%）。结论    中国人颞下颌关节骨性结构的三维测量和聚类分析为人工关节假体的设计选型提供了依据。