Search PubMed⌕ Search

SEARCH · Search PubMed

Results for “Tooth Loss”

Search indexed PubMed citations on genomics, clinical trials, systematic reviews and public health. Explore titles, authors and supplied subject terms, then open the PubMed record.

Quote a phrase for an exact phrase match. Source license links do not imply unrestricted reuse.

At least 307 records · Page 17Linked to original sources
PubMed2002

Experimentally induced unilateral tooth loss: histochemical studies of the temporomandibular joint.

Occlusal abnormality may contribute to osteoarthrosis of the temporomandibular joint (TMJ). Since mechanical force may induce changes in the extracellular matrix, we tested the hypothesis that unilateral removal of teeth and the resulting unilateral mastication change the content of glycosaminoglycans (GAGs) in the TMJ condyle and disc. Lower-right-side teeth were extracted from 12 adult male rabbits, which were killed 3 or 6 weeks later. Three normal rabbits served as controls. Sections were analyzed for morphological changes and levels of sulfated GAGs in the condyle and disc. Unilateral removal of teeth led to thickening of the condylar cartilage, alterations in the morphology of chondrocyte nuclei in the condylar cartilage and disc, and increases in levels of negatively charged ions in the hypertrophic layer of condylar cartilage. Small differences were observed, after unilateral removal of teeth, between the functional and non-functional sides of the TMJ. The results suggest that in response to mechanical stress, chondrocytes alter sulfated glycosaminoglycan (GAGs) synthesis and degradation rates, resulting in an elevated level of sulfated GAGs in the condylar cartilage.

Animals↗
PubMed2000

Tooth loss and the condition of the prosthodontic appliances in a group of elderly home residents.

The study assessed the number of missing teeth, the state of the existing prosthodontic appliances and the need for their replacement. Dental status and anamnesis were taken on a group of 120 elderly home residents by trained examiners. Prosthodontic appliances were evaluated according to the Karlsson's index for the crowns and bridges, and according to the modified Nevalainen et al. index for the evaluation of the complete dentures, as well as the need for prosthetic treatment. The most persistent teeth in both jaws were lower canines, while the most commonly missing teeth were lower first molars. On average, the crowns were older and in poorer condition than the bridges. Lower complete dentures had better stability but were also less retentive in comparison with the upper complete dentures. More than 82% of the subjects were in need of either fixed, removable or combined prosthodontic treatment. The high prevalence of needs for prosthodontic treatment pointed to the requirement for frequent dental check ups within elderly home residents in order to better identify and meet their dental needs.

Aged↗
PubMed2005

Can the relation between tooth loss and chronic disease be explained by socio-economic status? A 24-year follow-up from the population study of women in Gothenburg, Sweden.

The objective of this study was to evaluate the association between number of missing teeth and all cause, cardiovascular, and cancer mortality as well as morbidity and to explore whether socio-economic factors mediate this association. An ongoing prospective cohort study of 1462 Swedish women included a dental survey in 1968/69 with follow-up until 1992/93. The dental examination included a panoramic radiographic survey and a questionnaire. Number of missing teeth at baseline was analysed in a Cox proportional hazards model to estimate time to mortality and morbidity. Number of missing teeth, independently of socio-economic status variables (the husband's occupational category, combined income, and education) was associated with increased all cause mortality and cardiovascular disease mortality respectively (relative risk (RR): 1.36; 95% confidence interval (95% CI): 1.18-1.58) and (RR: 1.46; 95% CI: 1.15-1.85 per 10 missing teeth), but no associations were found for cancer mortality (RR: 1.18; 95% CI: 0.91-1.52). The relation between poor oral health and future cardiovascular disease could not be explained by measures of socio-economic status in this study.

Adult↗
PubMed2001

[Tooth loss, dental restorations and dental attendance in Switzerland].

The aim of this study is to report about the dental health situation in Switzerland and to evaluate frequencies of dental visits. Data were obtained from the first and second national Health Survey of the Federal Office for Statistics in 1992/3 and 1997. Based on a random sample of the population aged from 15 to 74 years, 71% participated in an oral interviews and of this group of individuals, 75% later filled in a written questionnaire in 1992/3. Data analysis showed that the proportion of the fully dentate population (28 remaining teeth) is 41%, while almost 50% had some prosthetic treatment. 31% were treated with fixed prostheses, i.e.crowns and/or bridges, and 19% with removable prostheses, i.e. partial and/or full dentures. With increasing age the number of missing teeth and the frequency of prosthetic treatment went up. The population with prosthodontic reconstruction increased mainly in the third and forth decades. In the elderly population (age 65-74 years), a shift was observed from fixed to removable prostheses; two thirds in this groups was restored with removable prostheses. The proportion of subjects visiting the dentist was by 70% in 1992/3 and declined to 65% in 1997. Subjects wearing removable prostheses had apparently lower frequencies (43%) in dental visits than subjects with fixed prostheses (80%). A potential concern exists for the edentulous population who presented a limited need for dental visits of only 22% during the year preceding the study.

Adolescent↗
PubMed2003

Experimentally induced unilateral tooth loss: expression of type II collagen in temporomandibular joint cartilage.

PURPOSE: We sought to examine possible changes in pattern and concentration of type II collagen in the condylar cartilage and articular disc of the temporomandibular joint (TMJ) in response to unilateral extraction of mandibular teeth in a rabbit model as a means of elucidating the effects of unilateral mastication on the TMJ. METHODS: A total of 12 experimental rabbits were killed either 3 or 6 weeks after the extractions, and 3 additional rabbits without extractions were used as controls. TMJ blocks from both sides of each of the 15 animals were examined for type II collagen via an immunoperoxidase procedure. RESULTS: Anti-type II collagen antibody (Ab) binding was detected mainly in the hypertrophic chondroblast layer of the condylar cartilage of normal rabbits. At 3 weeks after unilateral extraction of teeth, anti-type II collagen Ab binding to the territorial matrix of the hypertrophic chondroblast layer of the condylar cartilage and to the disc was stronger than normal. The increase in Ab binding appeared more dramatic on the nonfunctional side than on the functional side of TMJ. Variations from the normal pattern of anti-type II collagen Ab binding in terms of distribution through the extracellular matrix and fibrillar appearance were also observed. CONCLUSION: The findings suggest that the condylar cartilage and disc adapt to the imbalance induced by unilateral extraction of teeth through chondrocyte repair responses involving collagen II expression that appear to differ between the functional and nonfunctional sides of the TMJ.

Animals↗
PubMed2004

Trends in prevalence of complete tooth loss among Australians, 1979--2002.

UNLABELLED: Edentulism is a key indicator of the oral health status of populations and is associated with reduced quality of life. OBJECTIVE: To describe temporal trends in the prevalence of edentulism in the Australian adult population. METHODS: Data were obtained from four national surveys of persons aged 15 years and over conducted in 1979, 1987/88, 1994 and 2002. Prevalence estimates and standard errors were calculated for each survey for males and females and each State/Territory. Birth cohort analysis was undertaken to track changes in prevalence across successive surveys. Data from the 1987/88, 1994 and 2002 surveys were age-standardised to the 1979 resident population estimates for each State and Territory and crude and adjusted prevalence estimates were compared. RESULTS: The crude prevalence of edentulism declined from 20.5% (95% CI 20.1-20.7) in 1979 to 8.0% (95% CI 7.2-8.8) in 2002. The 2002 age-standardised estimate of 7.1% (95% CI 6.5-7.7) was only marginally lower. There were substantial reductions in prevalence of edentulism in all ages, sexes and State/Territories of Australia during the 23-year period. There were no significant changes in edentulism prevalence in three birth cohorts born since 1915. CONCLUSION: Edentulism prevalence at least halved between 1979 and 2002 among all ages, sexes and States/Territories of Australia. There was no significant change in prevalence of edentulism in cohorts born since 1915, refuting the notion that the risk of edentulism increases due to ageing, suggesting instead today's elderly had historically high rates of extraction prior to the 1950s that have not been experienced by subsequent cohorts.

Adolescent↗
PubMed2004

Tooth loss and caries prevalence in very old Swedish people: the relationship to cognitive function and functional ability.

OBJECTIVE: To analyse whether cognitive function and functional ability are related to oral health among community-dwelling older people over the age of 80 years. BACKGROUND: This cross-sectional study is based on the Kungsholmen Elders Oral Health Survey (KEOHS). The study included oral examinations carried out in two local clinics by standardised examiners and interviews using structured questionnaires. MATERIALS AND METHODS: Altogether 159 individuals were included in this study. Coronal caries and root caries were assessed using the National Institute of Dental and Craniofacial Research (NIDCR) diagnostic criteria. Cognitive function was assessed by the Mini-Mental State Examination (MMSE) index and functional ability was assessed by a global measure of self-reported changes. RESULTS: Older adults with a low MMSE score (< or = 23) tended to have a higher risk of coronal caries than those with higher scores. Participants with mild cognitive decline (MMSE = 24-26) and with a decrease in functional ability had a significantly higher risk of root caries. These associations changed little when adjusted by the covariates. In addition, people with a low MMSE (0-23) had a four times higher risk of not using dental services regularly. This result was unchanged after adjusting for the variables studied. CONCLUSIONS: This study revealed associations between the cognitive and functional status of the individual and aspects of oral health, that may contribute to a deeper understanding of the background of oral health status in older adults.

Activities of Daily Living↗
PubMed2003

Geographic differences in tooth loss and denture-wearing among the elderly in Norway.

OBJECTIVES: The purpose of this study was to estimate the prevalence of teeth and dentures in individuals aged 67 years and above. METHODS: A representative random sample of 1152 individuals was drawn from 11 of the 19 counties of Norway. In all, 582 subjects were interviewed and examined clinically by the same dentist (BMH) in 1996-99. Fifty-four had died before contact was established, and the response rate was 53%. The mean age of those examined was 76.4 +/- 5.9 years, range 67-99 years. RESULTS: In all, 40.0% had 'own teeth only', 27.9% 'own teeth and dentures' and 31.6% 'dentures only'. Three participants had neither teeth nor dentures. Interviews with 35 nonparticipants disclosed no statistically significant differences regarding dental/denture status compared to participants. By using stepwise polychotomous logistic regression, three regions of Norway could be identified with respect to the occurrence of teeth and dentures; significant differences existed between them and nonsignificant differences were found within them. In region A (South-East counties including the capital Oslo), region B (West-Central counties), and region C (Northern counties) the prevalence of 'own teeth only', 'own teeth and dentures' and 'dentures only' were 62.0, 26.5 and 11.1% in region A, 27.7, 28.9 and 43.1% in region B and 2.9, 28.6 and 65.7% in region C, respectively. Teeth were observed in 394 individuals, the mean number being 19,15 and 11 in regions A, B and C, respectively (over all mean 17 teeth). CONCLUSIONS: There are large geographical disparities with respect to dental/denture status in Norway. The oral health goals for the year 2000 suggested by WHO/FDI were far from met in large areas of the country at the time when the data were collected, (1996-99).

Age Factors↗
PubMed2001

Risk indicators of edentulism, partial tooth loss and prosthetic status among black and white middle-aged and older adults.

OBJECTIVES: To describe the prevalence and risk indicators of edentulism; to describe the frequencies of wearing removable dentures; to describe the prevalence and risk indicators of fixed prosthetic restorations; to test the hypothesis that fixed prosthetic restorations are most likely to have been placed in persons at lower risk for dental and periodontal diseases, and to test the hypothesis that, with dental disease, dental behaviors, dental attitudes and ability to afford crowns taken into account, blacks are less likely than whites to have received crowns. METHODS: The Florida Dental Care Study is a cohort study of subjects 45 years old or older. A telephone screening interview was done as a first stage to identify 5254 subjects who met eligibility requirements and who self-reported whether they were edentulous. In a second stage, a subsample of dentate subjects was contacted after they completed their telephone screening interview. Of these, 873 subjects completed a baseline in-person interview and dental examination. RESULTS: A total of 19% of first-stage subjects were edentulous. In a single multiple logistic regression, having a poorer self-rated level of general health was significantly associated with edentulism, as were being poor, older and white. Among the second-stage participants (all of whom were dentate), several prosthetic patterns were observed. For example, a total of 64% of maxillary full denture wearers reported wearing their denture all the time. Participants had also received numerous fixed prosthodontic services. The proportion of subjects with at least one crown varied widely by subject characteristics. CONCLUSIONS: A substantial percentage of non-ideal frequencies of wearing removable prostheses was reported, as were prosthesis-related soreness and broken prostheses. Although we expected and observed an association between having a fixed prosthetic crown and periodontal status, dental fillings, dental attitudes and financial resources, a residual association with race suggests that blacks are much less likely to receive prosthetic crowns. The several possible reasons for this circumstance warrant further investigation.

Black or African American↗
PubMed2002

A comparison of dental caries and tooth loss for Iowa prisoners with other prison populations and dentate U.S. adults.

PURPOSE: When one compares National Health and Nutrition Examination Survey III (NHANES III) data to previous national surveys it appears that oral health in the United States has improved. The purpose of this study was to determine if this trend holds for prisoners in Iowa, specifically in regard to number of decayed teeth, number of decayed surfaces, and number of missing teeth. METHODS: This original research is a report of cross-sectional data regarding untreated decay and missing teeth. A representative sample of inmates newly admitted to the Iowa Medical Classification Center (IMCC) between June and December 1998 was selected. Oral health data were collected from records obtained as the result of dental treatment screening examinations conducted by the IMCC staff dental hygienist. Demographic data were obtained from questionnaires. The oral health status of this Iowa inmate population was compared with the status of previously studied samples of inmates throughout the nation using descriptive and parametric statistics and with dentate, noninstitutionalized U.S. adults using descriptive, non-parametric, and parametric statistics. RESULTS: Of the 174 study participants, 149 were male and 25 were female. On average, male inmates had 7.09 decayed teeth, 15.3 surfaces of decay, and 4.07 missing teeth. The female inmates averaged 5.56 teeth with untreated decay, 14.4 surfaces of decay, and 5.12 missing teeth. Findings showed that male Iowa inmates have more untreated decay than previously studied samples of inmates throughout the nation. IMCC Caucasian male inmates had 1.6 to 7.8 times as many untreated decayed teeth as previous inmates, while African American inmates showed 1.2 to 3.4 times as many untreated decayed teeth. The Iowa male inmates had fewer missing teeth than most of the inmate comparison groups. Compared with dentate, noninstitutionalized U.S. adults, the IMCC inmates, male and female combined, had 8.4 times the amount of untreated decay but similar numbers of missing teeth. CONCLUSIONS: Newly admitted male and female inmates were disparate from the general dentate U.S. adult population in terms of untreated decay. This also was found for IMCC male inmates compared to previous studies of male inmates. Inmates of both genders at IMCC did not appear to be disparate with the comparison population with regard to number of missing teeth.

Adolescent↗