可摘局部义齿修复对基牙影响的临床评价

目的回顾性研究可摘局部义齿修复对基牙影响.方法戴卡环固位的可摘局部义齿5～8年的患者63例,修复体87件.记录并比较戴义齿5年后的基牙和非基牙患龋率和牙缺失率.结果基牙的患龋率(14.59%)和牙缺失率(20.17%)高于非基牙(8.27%,7.87%),Kennedy分类的第四类牙缺失患者的患龋率和牙缺失率低于其他牙列缺损患者,但差异无显著性(P＜0.05).结论卡环固位义齿修复在一定程度上可增加基牙患龋率和牙缺失率.     

可摘局部义齿与基牙龋研究现状

可摘局部义齿是牙列缺损的一种修复形式,用以恢复咀嚼功能和维持正常的面部外形。患者戴用可摘义齿时应该保持良好口腔卫生,以预防基牙的龋坏。基牙患龋的问题除了与时间、细菌、宿主、食物因素有关外,还受义齿材料、设计、制作工艺等多方面因素的影响,本文就近年来有关可摘局部义齿与基牙龋坏的研究现状进行综述。     

SD球帽式附着体义齿与传统可摘局部义齿修复后基牙存留状况分析

目的：比较研究SD球帽式附着体义齿和传统可摘局部义齿不同时期基牙的存留状况。方法：选择60例肯氏Ⅰ类牙列缺损患者,分别行SD球帽式附着体义齿（30例）和传统可摘局部义齿（30例）修复,于修复前及修复后半年、1年、2年、4年检查基牙的龋患及牙周情况,并作统计学分析。结果：两种义齿的基牙龋患率有显著性差异（P〈0.05）;而2组病例的基牙牙龈炎、牙周炎发病率无显著性差异（P〉0.05）。结论：在肯氏Ⅰ类牙列缺损的修复中,SD球帽式附着体义齿基牙患龋率远远低于传统可摘局部义齿,但在对牙周组织的损害方面,SD球帽式附着体义齿并不比传统可摘局部义齿更具优越性。     

老年人牙列缺损可摘局部义齿修复设计回顾性研究

目的:总结老年人多数牙列缺损的临床修复体会,探讨老年患者可摘局部义齿的设计。方法:对276例老年多数牙列缺损患者分别设计牙合垫式、连续卡环式、连续卡环加牙合垫式可摘局部义齿,其中179例余留牙有残根、残冠患者,先作根管治疗,然后按以上形式设计覆盖式可摘义齿。对修复效果作戴修复体时及戴后3月、3年随访,标准分为好、差两个等级。结果:276例复查结果:满意度调查,好均为100%,(P>0.05)。咀嚼功能检查,戴后3月,好为100%,3年好为99.3%,(P>0.05)。基牙牙周情况检查,戴后3月,好为100%,3年好为97.1%,(P>0.05)。结论:对老年人多数牙列缺损患者,应根据患者口腔情况设计最佳个体修复方案,制作适合老年人生理特点的可摘局部义齿。     

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可摘局部义齿是指利用口内余留的天然牙、牙槽骨和黏膜作支持,借助义齿的固位体及基托等部件装置取得固位和稳定,用以修复缺损牙列及相邻软硬组织,患者可自行摘戴的一种修复体。它是牙列缺损修复的常用方法。1可摘局部义齿的组成及其作用     

圆锥型套筒冠义齿修复老年下颌牙列缺损1例

对单颌牙列仅余留3-5颗天然牙的老年牙列缺损病例用黏膜支持式或混合支持式可摘局部义齿修复,常会引起基牙的负荷过大,或黏膜支持式可摘义齿基托下软组织受力时被压缩,出现基托下软硬组织的萎缩和吸收,义齿下沉,基牙形成早接触,增加基牙和余留牙的负担,造成牙周支持组织损伤。用套筒冠义齿修复能将牙合力合理分配到基牙、牙槽骨和黏膜,减轻基牙的负担,减缓牙槽骨的吸收,义齿戴入后稳定性好、美观舒适、咀嚼效率高、修复后的远期疗效好。本文报道1例下颌仅余留3颗天然牙用圆锥型套筒冠义齿修复后随诊观察4年的临床效果。     

多乐氟预防可摘局部义齿基牙患龋的临床研究

目的 观察多乐氟对可摘局部义齿基牙的防龋效果. 方法 行可摘局部义齿修复的牙列缺损患者100例,采用自身对照的方法,患者修复义齿后,随机选择一侧基牙作为试验侧基牙组涂布多乐氟,半年重复1次,对照侧基牙组做空白对照,3年后复诊检查可摘局部义齿基牙的龋坏情况. 结果 试验侧基牙组患龋率为24. 7%(40/162),低于对照侧基牙组41. 9%(67/160),差异具有统计学意义(χ2 =10. 71,P<0. 01). 结论 可摘局部义齿基牙涂布多乐氟可有效预防龋病的发生.     

套筒冠铸造支架覆盖义齿的临床观察

本文介绍套筒冠铸造支架覆盖义齿 ,即固定—可摘联合义齿修复的一种形式 ,它弥补了传统的固定义齿和可摘义齿的不足 ,临床效果满意。　　作者单位 :0 3 0 0 12太原 ,山西省人民医院口腔修复科　　一、材料和方法1.病例选择 :门诊牙列缺损患者 10例 ,男 6例 ,女 4例 ,年龄 34～ 6 2岁 ,平均年龄 5 2 .1岁。计修复体 15件 ,上颌 8件 ,下颌 7件 ,单侧游离缺损 3例 ,双侧游离缺损 4例。基牙47颗 ,修复体双基牙 2件 ,三基牙 11件 ,四基牙 2件。全身健康 ,口腔卫生良好 ,余牙牙周组织健康 ,无牙周袋 ,牙槽骨吸收不足根长 1/ 3。基牙有良好的支持骨…     

氟化物预防可摘局部义齿基牙龋坏的研究进展

可摘局部义齿是临床上修复牙列缺损的主要方法之一。但戴用后可引起口腔微生态失调,促进菌斑沉积,导致基牙龋病和牙周病发病率升高,基牙丧失而使修复失败。本文就基牙龋坏原因及如何预防基牙龋坏作一综述。     

可摘局部义齿固位体对面部美观的影响

可摘局部义齿固位体对面部美观的影响广东省江门市口腔医院何邕江牙列缺损患者因口腔解剖条件所限，或因某种原因不能采用固定修复方法来修复缺失牙，可用可摘局部义齿修复，这是一种制作简便、适用范围广、价格低廉的修复体。可摘局部义齿在设计上不仅要恢复缺失牙的解剖...     

Veterans Administration Cooperative Dental Implant Study — Comparisons between fixed partial dentures supported by blade-vent implants and removable partial dentures. Part I: Methodology and comparisons between treatment groups at baseline

This study was conducted to determine whether fixed partial dentures supported by dental implants provide an acceptable alternative to conventional removable partial dentures in patients with Kennedy class I or class II edentulous conditions. The acceptability of the new treatment will be based on success rates, impact on the health of the remaining dentition, masticatory performance, patient satisfaction, and maintenance care and cost. The study was planned also to provide comparisons between two designs commonly used by dentists for fabricating removable partial dentures. The designs differed only in terms of the type of the retainer (clasp type) and tooth support (rest location).A total of 272 patients with Kennedy class I and class II edentulous conditions were assigned on a random basis to one of the treatment groups, 134 to receive a removable partial denture and 138 a fixed partial denture supported by a blade-vent implant. All of the patients were medically screened and met prespecified criteria for oral hygiene, bone support for abutment teeth, and size of the residual ridge.Thirty-four patients were eliminated from the study before completion of their treatment. An additional six patients with early implant failures were reentered in the study and followed up as a separate group. The remaining 232 patients received comprehensive dental care, including removable partial dentures for 118 and fixed partial dentures for 114 patients.A series of examinations, radiographs, masticatory performance tests, patient satisfaction, food selection questionnaires, and dietary history were completed before initiation of the treatment, 16 weeks after the insertion of an RPD or an implant, and thereafter at 6-, 18-, 36-, and 60-month intervals. In addition, patients were seen at 6-month intervals for a recall dental examination, oral prophylaxis, plaque instructions, radiographic survey of the implant, and any needed dental treatment.The randomization stratification approach produced two treatment groups with comparable age, number of remaining maxillary and mandibular teeth, type of opposing dentition, and percent of patients with Kennedy class I and class II edentulous conditions. The mean scores of bone support, tooth mobility, and sulcular depths of abutment teeth were also similar. Significant but comparable improvements in oral hygiene and sulcular depth occurred in the two groups after treatment. The periodontal health scores at the 16-week interval serve as the baseline to measure subsequent changes in periodontal health. This prospective longitudinal study with prespecified criteria for implant and removable partial denture failure should provide reliable estimates of failure rates, number and types of complications, maintenance care needs, and total costs for the two treatment modalities and the two RPD designs.     

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。     

充填方式对种植义齿固定螺丝孔粘接强度及密封性的影响研究

 目的　研究不同充填方式封闭种植义齿固定螺丝孔对粘接强度及密封性的影响。方法　制作上颌第一前磨牙种植螺丝固位氧化锆冠试件80件，按照粘接前是否喷砂预处理、充填树脂种类、充填深度随机均分为8组，分别置于墨水溶液7 d，万能材料实验机上对螺丝孔内树脂充填体进行推出测试，记录树脂充填体脱粘接时的瞬间载荷，并取出树脂充填体，显微镜下观察记录并比较充填体染色的范围。结果    是否喷砂及树脂种类对粘接强度的影响均具有统计学意义（P < 0.01）；充填体厚度会显著影响粘接断裂载荷大小（P < 0.01），但对粘接强度的影响无统计学意义（P = 0.09）。喷砂后使用3 mm流动树脂充填微渗漏最少，不喷砂使用2 mm膏状树脂微渗漏最严重，是否喷砂、树脂种类及充填体厚度均对微渗漏有显著影响（P < 0.05）。结论    固定螺丝孔表面喷砂处理可增加粘接强度，减少微渗漏。流动树脂封闭种植义齿固定螺丝孔可获得相似的密封性及高于普通膏状树脂的粘接强度。在一定范围内，增加充填体厚度有助于提高固定螺丝孔封闭树脂的咬合承受力并减少微渗漏。     

Influence of clasp design of distal extension removable partial dentures on the periodontium of the abutment teeth

Three removable partial denture designs were investigated to determine the effect of minor connector configuration on the periodontal health of abutment teeth. Twenty-five patients wore three different removable partial dentures for 19 weeks each. The first removable partial denture placed a tilting force on the abutment teeth; the second was stress-releasing; and the third collected the least amount of plaque. Plaque accumulation, the condition of the periodontium, migration of the abutment teeth, deformation of the clasp arms, retention of the prosthesis, and patient preferences were assessed. The results demonstrated that the partial denture retentive design did not affect plaque formation. The prosthesis designed to place a tilting force on the abutment teeth appeared to cause the least mobility and migration of the abutments and had the greatest acceptance by the patients.     

Effects of rehabilitation with conventional removable partial dentures on oral health--a cross-sectional study

The study aims to elucidate the effects on the oral tissues of occlusal rehabilitation through removable partial denture. Sixty eight individuals treated with conventional partial dentures participated in a clinical study of the hygienic conditions around supporting teeth and the partial dentures, the occurrence of increased mobility of supporting teeth and deepened gingival pockets, the incidence of caries, impaired retention and the frequency of use of the prosthesis. A questionnaire was sent out and 84 per cent of the subjects responded anonymously. The results show that the removable partial denture represents a satisfactory method of oral rehabilitation for the individual with a reduced dentition.     

Cantilever bridges or removable partial dentures in geriatric patients: a two-year study

The purpose of this study was to compare prosthetic, functional and occlusal conditions in twenty-seven patients treated with distally extending cantilever bridges and twenty-six patients treated with removable partial dentures (RPD) in the mandible. All patients had a complete upper denture. Mean age of the patients in both groups was about 69 years. The patients were under a supervised oral hygiene care throughout the 2-year study period. There were 6.9 +/- 1.7 mandibular teeth left in the bridge group and 7.5 +/- 1.7 in the RPD group and the mean number of posterior teeth (natural teeth/denture teeth/pontics) in occlusion was 4.1 +/- 1.1 and 7.3 +/- 1.4, respectively. During the study period signs and symptoms of mandibular dysfunction became significantly aggravated in the RPD group, P less than 0.05. A balanced occlusion in the muscular contact position was observed in 90% of the patients in the bridge group and in 76% of the RPD wearers. During the study period the need for dental or prosthetic treatment was negligible in the patients treated with bridges. In the RPD group, twenty-two teeth were restored with fillings due to caries and in eight patients major adjustments of the sublingual bar were necessary due to irritation of the oral mucosa. This study has shown that treatment with distally extending cantilever bridges in the mandible is a favourable alternative to treatment with removable partial dentures in elderly patients with a reduced dentition.     

三种防龋药物对可摘局部义齿基牙患龋影响的对比研究

目的比较多乐氟氟化钠护齿剂、GC护牙素和Flariesse保护漆3种防龋药物在可摘局部义齿基牙中的防龋效果。 方法选择在揭阳市人民医院口腔科行可摘局部义齿修复的牙列缺损患者60例。根据世界牙科联盟临床牙位的记录法,样本为4个区均有天然牙存留者,使用简单随机抽样法随机选取每例患者4个区的基牙分别为多乐氟组、GC护牙素组、Flariesse保护漆组和对照组。试验组基牙半年重复1次涂布相应药物,对照组基牙不处理,2年后复诊检查基牙的龋坏情况。使用卡方检验比较4组基牙的患龋率,检验水准α = 0.05。 结果患龋率多乐氟组为14.75%、GC护牙素组为14.71%、Flariesse保护漆组为1.67%、对照组为35.21%。患龋率多乐氟组与GC护牙素组比较差异无统计学意义（χ² = 0.000,P = 0.994）,多乐氟组与Flariesse保护漆组（χ² = 6.971,P = 0.08）、对照组（χ² = 7.180,P = 0.08）,GC护牙素组与Flariesse保护漆组（χ² = 7.038,P = 0.008）、对照组（χ² = 7.752,P = 0.005）,以及Flariesse保护漆组与对照组（χ² = 23.380,P<0.001）间比较差异均有统计学意义。 结论可摘局部义齿基牙涂布药物可有效预防龋病,且Flariesse保护漆组防龋效果最佳。