Three-year clinical outcome of single implant-retained mandibular overdentures--results of preliminary prospective study

Objectives

The aim of this preliminary prospective study was to evaluate the clinical outcome, the oral health-related quality of life (OHRQoL), and the subjective chewing ability of patients with mandibular complete dentures retained by a single implant placed in the mandible midline.

Methods

Patients wearing complete dentures were treated with a single implant in the mandible, followed by relining of the dentures and incorporation of ball attachments for implant retention. Implant outcome, prosthodontic maintenance, subjective chewing ability, and the oral health impact profile of the patients were assessed at baseline and at four weeks after connecting the denture and implant.

Results

Eleven patients were enrolled in this investigation, and the mean observation period was 43.4 months (minimum period: 35, maximum period: 52 months). No implants were lost during observation period, but four dentures needed repair because of the fracture of the denture base in the midline area. A significant improvement was observed in the OHRQoL of the patients after the attachment of the mandibular dentures with a single midline implant. Furthermore, the subjective chewing ability of the patients was significantly improved after implant connection.

Conclusions

Within the limitations of this preliminary prospective clinical study, single implant-supported mandibular overdentures were a successful treatment option for older edentulous patients who showed improvements in their OHRQoL and chewing ability.     

乌鲁木齐市11～14岁儿童口腔健康相关生活质量的测定

目的 建立11~14岁儿童口腔健康问卷(The Child Perceptions Questionnair11~14,CPQ11~14)的中文版,测定其信度、效度等心理测量学特性,为其在中国适龄儿童中的推广使用提供理论依据。方法 通过对CPQ11~14英文版的翻译、回译、文化调适,制定出CPQ11~14的中文版。采用整群分层抽样方法随机抽取乌鲁木齐市11~14岁在校学生377人,对其进行中文版CPQ11~14问卷的调查,同时作口腔检查。结果 量表平均得分为8.93±5.65,口腔症状分项得分最高,社交分项得分最低。该量表的Cronbach′sα系数为0.75,所有条目删除后,Cronbach′sα系数均不增加。重测信度系数为0.75。因子分析法显示量表具有较好的结构效度。CPQ11~14得分与口腔健康状况及DMFT之间有明显相关性,提示该量表具有良好的区分效度。结论 本研究显示CPQ11~14中文版具有良好的信度与效度,中文版适用于乌鲁木齐市11~14岁儿童。     

Oral health-related quality of life in socially endangered persons in Copenhagen,Denmark

Objective: The aims of this study were to investigate and describe the Oral Health Related Quality of Life (OHRQoL) in a socially endangered group of people and to compare the OHRQoL to other patient groups.

Material and methods: About 294 socially endangered persons attending a volunteer clinic in Copenhagen Denmark filled in the OHIP-14 questionnaire. The group was compared in mean score and reported problems to a group of patients with tooth loss and about to have a removable dental prosthesis (RDP), a group with tooth loss about to have a fixed dental prosthesis (FDP) and a control group without tooth loss.

Results: Significantly higher OHIP-14 score was seen in the socially endangered group (15.5 (SD 12.6)) compared with the control (1.9 (SD 2.7)) and the FDP group (9.4 (SD 8.2)) but not the RDP group (13.1 (SD 10.5)). This difference was not changed after stratifying in age groups. Problems related to psychological disability, social disability, and handicap were more frequent in the social endangered group than for the other groups. The items pain, tense, diet, relax, life, and function stand out as problems in the socially endangered group compared to the other groups.

Conclusion: The OHRQoL is highly impaired in the socially endangered persons and at least to the level of persons with great tooth loss about to have an RDP. The problems seem to be more handicapping in the socially endangered compared with other patient groups known to have high impairment.