摘要:

ABSTRACTThe effect of professional prophylaxis given each month to individual children was investigated. A total of 225 schoolchildren, 10–12 years of age, participated during the experimental year. Each prophylactic session required about 15 min, and included tooth‐brushing instructions, professional tooth cleansings and fluoride rinses. Significantly fewer new interproximal carious lesions were obtained in the experimental group compared with the control group. No differences were observed for occlusal, buccal or lingual surfaces. The frequency of gingivitis was significantly reduced during the year of trial in the experimental group. The efficacy of the preventive treatment was most noticeable in children with high caries experience. For clinical practice monthly prophylaxes could be recommended to the most susceptible individu

ISSN:0301-5661    

DOI:10.1111/j.1600-0528.1975.tb00271.x

出版商:Blackwell Publishing Ltd    

年代:1975

数据来源: WILEY

摘要:

ABSTRACTThe purpose of the present study is to introduce and discuss the life table method in dental research. This statistical method provides a maximum utilization of information obtained from clinical follow‐up studies which involve a relationship between binary criteria and time, e.g. number of failures and successes after a certain period of observation. Data from a previous investigation of the 3‐year survival of formocresol‐treated primary molars was used to illustrate the application of the method. The cumulatively obtained survival rate utilizes all information from cases followed for less than the entire period of observation. A principal advantage of the life table method is the smaller sample variation, making the computed survival rate statistically more reliable than that obtained from the direct method. A simple method to test differences between two survival rates is desc

ISSN:0301-5661    

DOI:10.1111/j.1600-0528.1975.tb00272.x

出版商:Blackwell Publishing Ltd    

年代:1975

数据来源: WILEY

摘要:

ABSTRACTA partial recording system, suitable for use in caries incremental studies, was developed from first principles using data from 330 11‐ to 14‐year‐old English schoolchildren. This system was shown to be rapid, accurate and highly efficient when the results were compared with full‐mouth statistics. Comparisons were also made with five published caries partial recording methods, using 2‐ and 3‐year incremental data from a recent clinical trial. The results have been calculated both excluding and including precavitation lesions, as well as for three separate surface types (fissure, free smooth surface and approximal). Three methods of expressing “relative efficiency” are compared. The need for partial recording systems to be maximally efficient is discussed. The results confirm that many partial recording techniques are accurate, efficient and capable of considerably reducing e

ISSN:0301-5661    

DOI:10.1111/j.1600-0528.1975.tb00273.x

出版商:Blackwell Publishing Ltd    

年代:1975

数据来源: WILEY

摘要:

ABSTRACTThe concurrent validity of two methods of caries diagnosis was evaluated by comparing findings obtained by two observers in independent extraoral examinations of 109 posterior teeth with the histologic appearance of these teeth after sectioning. Diagnosis of pit and fissure caries predilection sites and approximal surfaces was carried out by the first examiner using a visual technique of clinical diagnosis (Method 1), and by the second using a visual‐tactile technique, aided by a standardized blunt probe (Method 2). Validity was expressed in terms of sensitivities and specificities of diagnosis. For Method 1, sensitivity was 0.91 for fissure sites and 0.94 for approximal surfaces, the corresponding estimates for Method 2 being 0.92 and 0.93. Specificity estimates for Method 1 were 0.81 for fissures and 0.92 for approximal surfaces, while the corresponding values for Method 2 were 0.85 and 0.97. Comparison of values between methods yielded no statistically significant differences except for the specificities of diagnosis at approximal surfaces. Method 1 returned a significantly higher frequency of false positive diagnoses at these sites than Method

ISSN:0301-5661    

DOI:10.1111/j.1600-0528.1975.tb00274.x

出版商:Blackwell Publishing Ltd    

年代:1975

数据来源: WILEY

摘要:

ABSTRACTThe present study was carried out to investigate the oral status of a group of 4‐year‐old children who had already been investigated as 3‐year‐olds 1 year previously. The children were examined for caries, gingivitis, extrinsic stains, supragingival calculus, signs of traumatic injury, occlusion, interdental spacing, and lactobacilli andC. albicansin plaque samples. The parents were interviewed regarding toothbrushing habits, fluoride prophylaxis, and oral habits in the children. The investigation was performed in association with a general physical examination of the children. Caries was demonstrated in 67 % of the children. The mean Gingival Index was 0.52. Lactobacilli in plaque were detected in 34 % of the children andC. albicansin 18 %. The children in whom lactobacilli were demonstrated had significantly more decayed surfaces than the other children. Various sucking habits were noted in 42 % and nocturnal grinding of the teeth in 28%. Most of the parents had received dental advice at the Child Health Centers, and 41 % had given their children fluoride tablets regularly for at least

ISSN:0301-5661    

DOI:10.1111/j.1600-0528.1975.tb00275.x

出版商:Blackwell Publishing Ltd    

年代:1975

数据来源: WILEY

摘要:

ABSTRACTAn epidemiologic study of oral health, food habits and socioeconomic conditions of 187 randomly selected 4‐year‐old children was carried out in the city of Umeå in the north of Sweden. The findings were compared with those in an investigation performed 4 years previously in the same area. The investigation showed a decrease in caries frequency from 1967 to 1971, which might be explained by the advice which had been given at Child Health Centers. The food habits had altered, in that there was less between‐meal consumption, particularly of sweets, buns, cakes and soft drinks. Also, increased consumption of fluoride tablets was noted. Multiple regression analyses confirmed the findings of the 1967 study, namely that a high frequency of sweets consumption was positively correlated with caries indexes and that children of parents with a higher educational level had lower caries indexes. It was also found that the Gingival Index was affected by the frequency of consumption of buns, cakes and soft drinks and by a high number of contacts between the

ISSN:0301-5661    

DOI:10.1111/j.1600-0528.1975.tb00276.x

出版商:Blackwell Publishing Ltd    

年代:1975

数据来源: WILEY

摘要:

ABSTRACTThe oral mucosa of 301 subjects of both sexes, aged 30 to 87 years and living in Humahuaca, in the province of Jujuy, nothern Argentina, was studied for leukoedema and leukoplakia. One hundred and fifty of these persons were addicted to chewing coca leaves. One hundred and fifty‐one non‐addicts served as controls. Prevalences of 61.3 % for leukoedema and 21.3 % for leukoplakia were reported in the study group. In the control group the prevalences were 9.2 % and 3.9 % for leukoedema and leukoplakia, respectively. The localization of lesions in the study group always coincided with where the coca leaf bolus is habitually kept. In general, the histopathologic pictures were compatible with leukoedema. This confirms previous findings about the effects on the oral mucosa of chewing coca leaves and also the benign character of leukoedema provoked by this irrit

ISSN:0301-5661    

DOI:10.1111/j.1600-0528.1975.tb00277.x

出版商:Blackwell Publishing Ltd    

年代:1975

数据来源: WILEY