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At least 217 records · Page 12Linked to original sources
PubMedDate not supplied

Patterns of tooth loss in young adult Hong Kong Chinese patients in 1983 and 1998.

OBJECTIVE: To describe and compare patterns of tooth loss in 2 groups of 21- to 25-year-old Hong Kong Chinese patients examined 15 years apart. MATERIALS AND METHODS: The panoramic radiographs of consecutive young adult patients who attended the primary care department of the Dental School of the University of Hong Kong in 1983 and 1998 were reviewed. RESULTS: The proportions of patients with full dentition were 36.0% in 1983 and 45.1% in 1998. However, when third molars were excluded, the proportions were 44.3% and 62.3%, respectively. The prevalence of missing first molars was 10.5% and 3.2% for the 1983 and 1998 groups, respectively, whereas that for missing third molars was 13.5% and 17.9% and that for missing premolars was 1.9% and 2.4%, respectively; all of the differences were statistically significant (p < 0.01). Although the first molars, especially the lower first molars, were at greatest risk of being lost in both groups, the prevalence of missing first molars fell substantially (10.5% in 1983, 3.2% in 1998); in contrast, the prevalence of missing premolars and third molars increased. CONCLUSIONS: The decline in the prevalence of missing first molars may in part reflect the efficacy of toothbrushing, whereas the increase in missing premolars and third molars reflects increases in orthodontic and oral surgical activity in the intervening period.

Adult↗
PubMed2000

Initial extractions and tooth loss during supportive care in a periodontal population seeking comprehensive care.

BACKGROUND/AIMS: This retrospective survey was aimed at determining the prevalence of tooth extractions and the dental pathologies associated with them during both the active and maintenance phase of periodontal therapy in a periodontal population seeking comprehensive dental care. METHODS: A total of 273 randomly selected subjects from the oral prophylaxis clinic of the University of Berne were included. All subjects had received comprehensive care consisting of periodontal and restorative treatment and participated in a supervised maintenance program for an average of 67+/-46 months (range 5 to 278 months). The population consisted of 39.6% current smokers and 27.8% previous smokers. 6.2% of the patients had gingivitis, 20.5% mild periodontitis, 48.4% moderate and 24.9% severe periodontitis. The average frequency of the recall visits was 4.4+/-1.5 appointments/year (range 1.7-12 appointments/year). RESULTS: Results indicated that 574 out of a total of 6503 teeth were extracted; 311 teeth were extracted during active therapy and 263 during the supportive periodontal care (SPC) phase of therapy. 46% of patients received tooth extractions as part of their active treatment and 41% during their participation in the secondary prevention program. In the subgroup whose treatment plan included extractions the average number was 2.5+/-1.6 teeth per patient. Likewise, the patients who received extractions during recall lost an average of 2.35+/-1.9 teeth per subject with an incidence of 0.4+/-0.37 teeth per patient per year. These data reinforce the concept that a minority of the population is responsible for the majority of tooth extractions, both during active therapy and SPC. Periodontal disease was the only pathology observed at 57% of the extracted teeth; while caries, endodontic pathology and technical problems in the absence of periodontitis were observed in 29% of cases. CONCLUSIONS: These observations indicate that the rendered treatment was effective in the long-term maintenance of the dentition of these subjects and suggest that advanced periodontal disease represented the major cause of tooth loss in this population.

Adolescent↗
PubMed1993

Periodontitis and tooth loss: comparing diabetics with the general population.

People with diabetes may be at increased risk for periodontal disease. This study compared the periodontal health of diabetic and employed adults. While tooth loss and gingival attachment was similar for both groups, diabetics had a greater prevalence and extent of periodontal pockets. Diabetics with poor metabolic control and calculus also had more periodontitis.

Adult↗
PubMed1998

[Dynamics of tooth loss In the adult population in Hungary].

The authors examined the dental status of 9991 hungarian adult people and they drawn the conclusion of the tooth-loss dynamics of the '80-es. It has been found, that in comparison with international data the number of lost teeth was shaping unfavourable. Nevertheless the rate of completely edentate patients in all age-groups shows a favourable tendency.

Adult↗
PubMed1996

Periodontal reasons for tooth loss in an Asian population.

This study analysed data on periodontal reasons for tooth extractions, obtained from 52 dentists practising general dentistry in Singapore. The results revealed that, out of 2172 teeth extracted from 1276 patients, 35.8% were lost due to periodontal disease and 35.4% due to caries. Extraction due to periodontal problems increased with age, were more conspicuous in the Indian ethnic group and were frequently associated with pocketing and tooth mobility.

Adolescent↗
PubMed1979

[Causes of tooth loss in Switzerland. Results of an inquiry of private dental practitioners].

The reasons for tooth loss in different age groups were analysed. The data were compiled from questionnaires sent to 99 private dental practices chosen at random in Switzerland. Caries was the most common reason given for tooth extraction in younger age groups. After 40 years of age, however, the number of teeth extracted because of periodontal disease was higher than the number removed for any other reason.

Adolescent↗
PubMed1997

Incidence of tooth loss and dental caries in 60-, 70- and 80-year-old Swedish individuals.

The retention of natural teeth among the elderly is increasing and, in recent studies, dental caries has been identified as the main reason for teeth being extracted. The 5-year incidence of tooth loss and dental caries and the most crucial dental factors for tooth extraction were studied in a random sample of 60-, 70- and 80-year-old inhabitants of Gothenburg. Of the 208 persons examined at baseline, 148 (71%) participated in the follow-up examination: 69, 51 and 28 respectively in the different age groups. In all, 110 teeth had been extracted during the period in 40% of the participants. Only 9 persons had lost three or more teeth. The mean numbers of remaining teeth were 22. 18 and 15 respectively in the 60-, 70- and 80-year age groups and the mean numbers of teeth lost during the 5-year period increased with age from 0.4 in the 60-year-olds to 0.8 and 1.4 in the 70- and 80-year-olds (P < 0.05). The major reason for tooth extraction was dental caries and it was found in 60% of all cases and at a higher rate of 77% in the oldest age group. Fifty-one per cent had developed new coronal carious lesions and 61% had new root carious lesions, while 27% had not developed caries during the period. The mean 5-year increment in decayed and filled coronal surfaces increased with age from 2.3 in the 60-year-olds to 3.7 and 5.3 in the 70- and 80-year-olds (N.S.I. The increment in decayed and filled root surfaces was higher in women than men, 3.4 compared with 1.8 (N.S.), which also increased with age from 1.4 in the 60-year-olds to 2.4 and 5.5 in the 70- and 80-year-olds (P < 0.0001). It was concluded from this study that few teeth had been lost during the 5-year period but that dental caries still appeared to be a serious problem among some very elderly people.

Aged↗
PubMed2004

[Dental tours de force 6. Autotransplantation in case of agenesis or traumatic tooth loss].

Autotransplantation of a tooth is probably the most natural method to replace a missing or lost tooth. This treatment has been performed successfully already for more than twenty years. The prognosis of a transplanted tooth is determined by tooth type, stage of root formation at the time of transplantation, surgical technique used, and duration and way of splinting. Determining the optimal stage of root formation of the tooth is very important in planning the autotransplantation. If the transplantation is carried out successfully, the transplanted tooth behaves at its new location just like before: it erupts, the root formation is continuing, it shows physiological mobility and it can be displaced by orthodontic forces. Most cases of autotransplantation require teamwork between oral surgeon, orthodontist, and dentist.

Anodontia↗
PubMed2000

Need for occlusal therapy and prosthodontic treatment in the management of temporomandibular disorders. Part II: Tooth loss and prosthodontic treatment.

The second part of this review, evaluating the literature on the relationship between dental occlusion and temporomandibular disorders (TMDs), focuses on the aetiological importance of tooth loss and the place of prosthodontic replacement in the treatment of TMD. Loss of teeth and lack of posterior occlusal support seem to have little influence on the development of TMD, which calls into question the use of prosthodontic restoration as prevention or treatment for TMD. In addition, there are practically no studies assessing the benefit of instrumental analysis in diagnosis or comparing the outcome of prosthodontic treatment with simple reversible methods in the management of TMD. There is a trend in the current literature to abandon any treatment, including positioning appliances and prosthodontic measures, to 'recapture the disk' in patients with disk displacements because of the favourable, long-term results achieved after using more simple methods. It is concluded that prosthetic therapy in TMD patients is not appropriate for initial TMD treatment and should only be carried out on prosthodontic indications after reversible treatment has alleviated pain and dysfunction.

Bruxism↗
PubMedDate not supplied

Ten-year incidence of tooth loss and dental caries in elderly Swedish individuals.

There has been a significant reduction in edentulism and the elderly retain more teeth into old age. The 10-year incidence of tooth loss, coronal and root caries was studied in a random sample of inhabitants of Göteborg, who were 55, 65 and 75 years old at baseline. Of the 208 persons examined at baseline, 102 (49%) participated in the follow-up examination: 56, 37 and 9, respectively, in the different age groups of 65, 75 and 85 years. In addition, for the purpose of time-trend comparisons, a new random sample of 98 individuals aged 55 years was examined. The mean numbers of remaining teeth were 24, 23, 17 and 14, respectively, in the age groups of 55, 65, 75 and 85. The corresponding mean numbers at baseline were 23, 19 and 17, respectively, in those subjects who were then 55, 65 and 75 years old. Forty-eight percent had lost no teeth during the 10-year period, while 13% had lost more than 2 teeth. The major reason for tooth extraction was dental caries and it was found in 60% of all cases. The incidence of coronal caries decreased, while that of root caries increased with age (p < 0.01). Comparing the same age groups, the frequency of root caries had decreased during the 10-year period. It could be concluded from this study that elderly people were determined to retain their teeth for as long as possible, but dental caries may be a problem among the very old.

Age Factors↗
PubMed1991

A study of occlusal anomalies and tooth loss in children aged 13-15 years in Nairobi.

Two hundred and fifty one African children aged 13-15 years were examined for specific intra- and inter-arch malocclusions and tooth loss. The children were from 6 schools randomly selected from 154 primary schools in Nairobi. Overall, 47% of the children were found to have malocclusion, the most frequently encountered anomaly being crowding. Some of the anomalies showed prevalences which differed markedly from those previously reported for American and British Caucasians of comparable age-groups. Nineteen per cent of the children had missing teeth due to caries, 5.6% due to extractions as part of orthodontic treatment and 13% due to other reasons. The mean number of permanent teeth missing due to caries was 0.2, orthodontic treatment 0.1 and due to other reasons 0.2. Almost all the teeth lost as a result of caries were molars and those due to orthodontic indications were premolars. No teeth were recorded as missing due to periodontal disease or trauma. The study indicated a need to exercise caution in trying to relate the numerical values for prevalence of malocclusions in current textbooks to the present population. The results also showed that the proportion of permanent teeth lost was small.

Adolescent↗
PubMed1992

Tobacco smoking, a factor in tooth loss in Reykjavík, Iceland.

A random sample of 1023 people 52-79 yr of age out of a group participating in a longitudinal study at the Heart Preventive Clinic of the Icelandic Heart Association in Reykjavík, Iceland, was examined. The examination was carried out in 1985-7. The results on the number of remaining teeth and total edentulousness were compared to information regarding smoking habits and social status. Total edentulousness was more common among women. Total and partial edentulousness was more frequent in the lower "employment" classes while no statistical difference was found for smoking in this respect. This, however, did not affect the significance of tobacco smoking as a factor in the loss of teeth. In general smokers had fewer remaining teeth and were more often edentulous than ex-smokers, smoking time not considered, who again suffered more tooth loss than those who had never smoked. Therefore it is concluded that tobacco smoking may be a major single independent risk factor in the loss of teeth.

Aged↗
PubMed1995

Tooth loss during compulsory dental care.

The traditional model that teeth are lost due to caries early in life and periodontitis later has been challenged by recent studies. Randomly selected Air Force records were reviewed for the reasons for extractions. Between the ages of 20 to 50, the rate of loss due to caries declined from 0.11 to 0.03, whereas the rate due to periodontitis increased from 0 to 0.34. This study supported the traditional model that tooth loss due to caries decreases with age and that periodontitis is the major cause of loss later in life.

Adolescent↗
PubMed1995

Non-carious cervical tooth loss. Part 2: Management.

The aetiology, prevalence, diagnosis, prevention and monitoring of non-carious cervical tooth loss (NCTL) has been covered in the first article of this series. The aetiology of NCTL is usually multifactorial and may not be attributable to any single factor. Central to the successful management of NCTL is a correct diagnosis of the cause. This article will focus on the management of NCTL.

Composite Resins↗
PubMed2000

Total tooth loss in the United Kingdom in 1998 and implications for the future.

The 1998 Adult Dental Health Survey, published this year, showed that the number of people without teeth should fall over the next three decades, to only 4% of the UK population. Patterns of tooth loss and retention are also changing. This article, the first of a series on the interpretation of the Adult Dental Health Survey, discusses the implications of these trends for dentistry.

Adolescent↗
PubMed2003

An infant with primary tooth loss and palmar hyperkeratosis: a novel mutation in the NTRK1 gene causing congenital insensitivity to pain with anhidrosis.

Patients with congenital insensitivity to pain and anhidrosis (CIPA), caused by mutations in the NTRK1 gene, can be difficult to diagnose because of their variable presentation, the lack of simple diagnostic tests, and the paucity of cases reported in North America. We describe a 1-year-old infant who had tooth loss and palmar hyperkeratosis as the primary manifestations of CIPA. He was initially evaluated by a pediatric dentist and epidermal dysplasia syndromes were considered, but insensitivity to pain was suspected after a skeletal survey revealed an unrecognized skull fracture. Nerve conduction studies were normal, as was his response to subdermal histamine injection. Sequence analysis of his NTRK1 gene revealed 2 mutations: 1 mutation is novel, while the other has been described previously in a patient of northern European descent. An antibody directed against NTRK1 revealed persistent expression in keratinocytes, consistent with the mutations in this patient. Skin biopsy specimens revealed a lack of epidermal and sweat gland innervation. Immunohistochemistry of skin biopsy specimens, together with routine nerve conduction studies, can provide quick and reliable confirmation if CIPA is clinically suspected.

Hereditary Sensory and Autonomic Neuropathies↗