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At least 163 records · Page 9Linked to original sources
PubMed2006

Effect of adding impression material to mandibular denture space in Piezography.

The purpose of the study was to examine the effect of adding impression material on denture space using a piezographical record. Subjects were ten voluntary edentulous patients, aged from 61 to 84 years old. A maxillary trial denture with anterior artificial teeth and a mandibular base plate with a keel were inserted into the oral cavity. Three ml of tissue-conditioning materials was injected on the base plate for each trial. Afterwards, the patients were instructed to pronounce various phonemes, so that tongue, cheeks and lips conformed to the denture space. The impression complexes were cut at the level of the estimated occlusal plane. Occlusal analogues were made by duplicating the impression complexes. Measurements were performed for five analogues from the first to fifth additions for each subject. The data were compared using analysis of variance (ANOVA), and a Friedman's test followed by a Bonferroni test for multiple comparisons with a level of significance at 5%. At the molar and premolar positions, the bucco-lingual widths of the occlusal table increased significantly at incremental injection of impression materials from P1 to P4. The midpoints of the analogues were located at a distance of 1.5 mm buccally at the molar position and at a distance of 1.9 mm buccally at the premolar position from the top of the alveolar crest, independent of the addition of impression material. It was concluded that denture space was regulated by volume of material and was located slightly on the buccal side from the crest of the residual alveolar ridge.

Aged↗
PubMed1995

Fabrication of a duplicate denture from an existing complete denture.

A technique is presented that describes the fabrication of a duplicate denture using the patient's existing complete denture. This procedure enables the practitioner to offer patients an alternative to being without a denture during a laboratory reline of an existing denture. A vinyl polysiloxane impression material is used to impress the polished surface of the existing denture as well as to block out undercuts on the impression surface of the denture before pouring a stone cast. Because of the stability of the impression material used, most of the laboratory procedures can be accomplished separate from the clinical appointment.

Acrylic Resins↗
PubMed1991

Comparison of patients' views and dentists' evaluations 5 years after complete denture treatment.

This study describes a comparison of patients' views of their dentures and dentists' technical evaluations 5 yr after complete denture treatment. Of the original sample (n = 139) a test group of 92 patients remained available for the actual study 5 yr after treatment. Firstly, the patients filled in a questionnaire regarding their complaints of and (dis)satisfaction with dentures. Secondly, they were examined independently by two experienced dentists in order to evaluate their dentures. Finally, after considering the answers to the questions in the questionnaire and their own dentures' evaluation the dentists proposed a therapy. It was found that patients and dentists agree on assessments of denture retention, but do not agree on assessment of denture aesthetical aspects. Furthermore, it appeared that generally more therapy was rendered by the dentists than could be expected on the basis of their evaluations and the patients' views.

Attitude of Health Personnel↗
PubMed1992

Discrepancy between need for prosthodontic treatment and complaints in an elderly edentulous population.

Most reports indicate that about two-thirds of the elderly population have poor oral health but that only about one-third complain of a problem. The reason for this discrepancy has never been explained adequately. The objective of this study was to estimate the need for prosthodontic treatment in an edentulous elderly population, and to identify factors associated with complaints, needs for treatment, and the use of dentures. Interviews and examinations were conducted to determine the oral health and dental concerns among 269 residents of longterm care facilities in Vancouver. The need for prosthodontic treatment was considered under theoretical, clinical, and practical conditions, and related to various factors that might help to predict this need. During the interview, about half (54%) of the sample identified a problem, and 83% of the subjects were either using a denture with a major fault or were missing a denture. Seventeen percent of the sample would not benefit from treatment because of a severely resorbed residual ridge, while the presence of a complaint combined with a prosthodontic need indicated that about one-third (36%) would seek and benefit from treatment. The proportion of subjects with complaints was larger among the more educated subjects, and among those who had been recently to a dentist. It was not possible to predict the need for treatment from any of the socioeconomic factors considered. No significant association was observed between the need for treatment and the complaints, and many subjects seemed to be resigned to their discomfort or had unrealistic expectations from their dentures.

Aged↗
PubMed1995

Changes in dental attitude and behavior among Dutch adults wearing complete dentures.

In 1992 a follow-up on the Dutch National Dental Survey of 1986 (DNDS) was performed. The main objective was to detect and analyze changes in oral self care, dental attendance, and oral health status. This paper will focus on the DNDS adults wearing complete dentures. Changes over a 6-yr period will be presented of: dental attendance, denture satisfaction and wearing of the complete dentures, and denture treatments. A postal questionnaire was used: 232 persons (64%) participated in the study. Analysis of Variance (ANOVA) was used to study the effect of dental and social variables on observed changes since 1986. Risk ratios (RR) were computed to clarify the actual effects of these variables. With respect to dental attendance, a shift towards visits for denture check-ups was found, thought to reflect the respondents' concern for their complete dentures (RR = 1.6). A small shift towards more visits because of denture problems was found. This was attributed to denture treatments that had taken place between 1986 and 1992 (RR = 2.8). With respect to changes in denture satisfaction, no influence of denture treatments could be noted, but a relation was found with a variable indicating the imperfection of the complete dentures as felt by the respondents (RR = 2.8). In 31% of the respondents some denture treatment had been performed since 1986. No objective dental criteria of complete dentures and denture bearing areas had influenced these denture treatment decisions, but only respondents' subjective criteria (RR = 1.9-2.9).

Adult↗
PubMed2005

Risk factors associated with denture stomatitis in the United States.

BACKGROUND: This study reports denture stomatitis (DS) prevalence from a large USA probability sample from the National Health and Nutrition Examination Survey, 1988-1994 (NHANES III). METHODS: Oral examinations were performed on 3450 individuals 18-90+ years of age (mean: 59.2; SD: 0.50 years), 57.7% male and 42.3% female. Multivariable logistic regression models were fitted for DS using sociodemographic, denture quality, blood analytes, alcohol and tobacco use, history of diabetes, and current antibiotic use as covariates. Odds ratios (OR), adjusted for other covariates in each model (AOR) are presented. RESULTS: Of 3450 removable denture wearers, 963 (27.9%) had DS. DS prevalence was associated with wearing maxillary (AOR: 6.20) and mandibular (AOR: 5.21) complete dentures continuously; smoking >/=15 cigarettes day (maxillary complete: AOR = 1.31; mandibular complete: AOR = 1.50; maxillary partial: AOR = 2.04); vitamin A deficiency (mandibular complete: AOR = 5.97; maxillary partial: AOR = 5.67; mandibular partial: AOR = 24.42). Maxillary dentures with inadequate relines had approximately half the OR of DS than those with adequate relines (maxillary complete: AOR = 0.42; mandibular complete: AOR = 0.50). CONCLUSIONS: Denture stomatitis prevalence is associated with the amount of tissue covered by dentures, low vitamin A levels, cigarette smoking, and constant denture wear.

Adolescent↗
PubMed2001

One-year prospective evaluation of the early loading of unsplinted conical Brånemark fixtures with mandibular overdentures immediately following surgery.

BACKGROUND: Prospective evaluation of the early loading of unsplinted Brånemark implants with mandibular overdentures opposing conventional dentures is not evident in the implant-related literature. PURPOSE: To clinically evaluate progressive and early loading of 20 unsplinted conical Brånemark implants in edentulous mandibles with overdentures. MATERIALS AND METHODS: Ten edentulous patients all had two conical Brånemark implants placed in the anterior mandible with mandatory primary stability with bicortical anchorage. Ball abutment connection was performed simultaneously. Previously constructed conventional mandibular dentures were temporarily relined with tissue conditioner postoperatively and worn with moderation for the first 2 weeks to allow progressive loading. Early loading of the implants followed after 2 weeks, with inclusion of the respective matrices in the mandibular dentures, using a definitive reline procedure. RESULTS: All patients successfully functioned with their mandibular implant overdentures from 2 to 52 weeks postoperatively. Mean marginal bone loss was within established criteria for success: 0.22 mm (SD = 0.48 mm) mesially and 0.30 mm (SD = 0.39 mm) distally on the conical implants. Mobility tests using the Periotest instrument became more negative, although not at statistically significant levels. Difficulties in the management of the peri-implant mucosa between surgery and loading at 2 weeks were observed in 40% of the patients. CONCLUSIONS: These preliminary 1-year results show that successful early loading of unsplinted conical Brånemark implants with mandibular overdentures is possible.

Aged↗
PubMed2001

Developing a schedule of normative denture treatment need.

OBJECTIVES: The aim of the study is to assess the reliability and validity of a schedule to determine the normative denture treatment needs of older people. DESIGN: The design used assessed inter-examiner reliability (criterion validity), test-retest reliability, and content and face validity of the schedule. SETTING: The inter-examiner reliability study took place in a Department of Prosthetic Dentistry, the remainder of the work took place in a community setting. RESULTS: The results showed that the schedule in terms of an index performed well with reasonable inter-examiner and test-retest reliability. Difficulties however were encountered with regard to subjective judgements about denture quality and design; consequently, there was modest inter-examiner agreement for stability, retention, and occlusal balance. CONCLUSIONS: The findings from this preliminary work suggest that the schedule may be useful in the assessment of normative denture treatment need in a community setting. Nevertheless more work will be required to obtain further information on the validity of this new assessment measure.

Age Factors↗
PubMed1978

The role of the overlay denture in the prevention of mandibular ridge atrophy.

The overlay denture concept may be used to postpone and in some cases avoid the atrophied mandibular ridge syndrome. The co-operation of the patient is a vital factor for success and the treatment regimen is divided into a series of self-contained stages to allow the patient to demonstrate his mastery of each before proceeding to the next. Function in the edentate can be enhanced by the use of this type of denture.

Alveolar Process↗
PubMed1995

Complete denture problem solving: a survey.

An investigation was carried out into the problems experienced by 114 referred patients with complete dentures who were considered to be difficult or to have difficult prosthodontic problems. The commonest problems were those of pain and lack of retention, due mainly to occlusal discrepancies and excessive VDO. Treatment was carried out on an individual basis with a large proportion of dentures being remade. However, a small number was satisfied by counselling alone without procedural treatment. A diagnostic denture technique was used for particularly difficult cases. This technique showed that, in two cases, technical prosthodontic inadequacies could definitively be excluded as the problem. The overall success rate for treatment was 80 per cent. Further studies on a larger patient sample are needed so that specific problems can be linked to cause and outcome in a meaningful manner.

Counseling↗
PubMed1996

Removable prosthodontics: a survey of practices and attitudes among South Australian dentists.

All dentists registered in South Australia were surveyed in July 1993 in relation to removable prosthodontics. The replies indicated that removable prosthodontics constituted a significant part of most dental practices. Most dentists felt that removable prosthodontics should be an essential part of the undergraduate curriculum. They felt that more expertise is now required to manage the treatment of the ageing population with either their first or replacement removable prostheses. The majority of dentists felt that their own undergraduate training had equipped them well to manage removable prosthodontic treatment for their patients; however, many helpful suggestions were made on areas that they thought required more emphasis.

Adult↗
PubMed2002

Immediate or transitional complete dentures: gerodontic considerations.

Ageing society is a worldwide phenomenon, especially in western countries, were the proportion of the aged population reaches about 20%. Of this group about 50% constitute what is termed the old-old frail persons who suffer drastic physiological changes which exacerbate difficulties in classic dental and prosthetic treatments. Epidemiological surveys point out that many of the elderly present with about 12-14 teeth with bad periodontal conditions that should be extracted. As a result, special strategies have to be elaborated to give an appropriate solution to specific medical and prosthetic conditions. Transitional procedures are necessary to assure the smooth change between removable partial dentures and complete dentures. Even when implant supported dentures are planed this transition period is necessary. Clinical decision making is crucial to avoid stress to these medically compromised patients.

Aged↗
PubMed2002

Implant complications and failures: the fixed prosthesis.

The implant-retained fixed prosthesis has been advocated as an effective restoration offering significant benefits over conventional prosthetics. The success of treatment depends on careful pre-surgical planning and prosthesis design. This paper outlines some common complications encountered during the planning, fabrication and maintenance of both large and small fixed prostheses and suggests how these complications can be minimized.

Bite Force↗