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At least 55 records · Page 3Linked to original sources
PubMed1979

[Alveolysis in adolescents: prevalence and correlation with the DMF index, the OHI-S index and the PM index according to sex, age and occupation (Geneva 1970-1972)].

A randomized sample of 1392 girls and boys, 16 to 20 years old and living in the canton of Geneva have been studied through their own history, clinically and radiologically in 1970-72 during an epidemiological and socio-economical study. The rate of alveolar bone resorption (radiographic method of Marshall-Day and Shourie, with Schei grid), the degree of gingival inflammation (PM index), the oral health (OHI-S index) and the carious frequency (DMFS index) have been determined. For the same sample, an indication of the duration of caries prevention through fluoride tablets, the frequency of daily toothbrushing and the dento-facial anomalies (Angle classes) were known. Through statistical analysis, it was shown that the mean rate of alveolar resorption was 0.85 (standard deviation 1,99) for the whole sample, that 24,16% of the subjects had a zero rate, 90% of the children having a rate of no more than 3,74 and that the maximum observed rate was 20. On the other hand, this bone resorption rate was statistically significantly correlated with the PM index and the OHI-S index. However no significant correlation has been shown between alveolar resorption and the other oral characteristics such as carious attack, toothbrushing, duration of caries prevention, dento-facial anomalies.

Adolescent↗
PubMed1991

[DMF index in patients with end-stage kidney disease].

In order to demonstrate the role of saliva with high concentration of urea and alkalinity, preventing dental caries in the uremic patients, 4 groups of children were studied: I healthy controls, II children with successful renal transplantation, III uremic children in dialysis and IV uremic children with conservative treatment. The results show a direct correlation between increase of saliva urea concentrations and decrease in saliva hydrogen ion concentration. Higher values of urea and more alkaline pH were found in children with uremia, with or without dialysis. Despite that there was not a statistically significant difference in the caries-lost-obturation index: 0.252 was found in the group of healthy controls and the lowest was 0.119, in the patients with uremia and dialysis. The results suggest that a protector role of saliva in uremic children is possible.

Adolescent↗
PubMed1996

The relationship between restorative treatment provided and a one year increment of the F component in the DMF index.

There is considerable debate over the estimate of true increment of caries in an adult population derived from a conventional epidemiological study. The purpose of this investigation was to compare the increment of restorative treatment provided by dentists for caries with an estimate of what would have been recorded in a conventional epidemiological study as FT(S). The two types of increment were calculated from data collected for 3,920 regularly attending adults over the age of 25 years receiving dental treatment from 24 general dental practitioners. The adults were treated by their dentists prior to baseline so that, in the dentists' opinions, there were no caries lesions requiring restoration. All treatment carried out over the next 12 months together with the reasons for this, were recorded by the dentists. The increments for all restorative treatments and those considered by the dentist to be related to caries were calculated and compared with the conventional epidemiological FT and FS increments, calculated as changes from sound at baseline to restored for both teeth and surfaces. The results showed that the epidemiological FT and FS increments under-estimated both the total restorative treatment and that provided for caries by the dentists.

Adult↗
PubMed1991

[Personal identification from antibodies to oral streptococci using ELISA].

Serum antibodies to oral streptococci were titrated by ELISA for the purpose of personal identification. The bacteria concerned comprised 9 strains of Streptococcus mutans, which are known to cause dental caries, and one strain of Streptococcus sanguis commonly found in the oral cavity and harmless to the teeth. The quantities of IgM antibodies to these streptococci were more or less dependent on the total levels of serum IgM. However, no relation was found between the IgG antibodies and the total serum levels of IgG. IgA antibodies showed a degree of correlation that was intermediate between those of the IgM and IgG antibodies. Two antibodies, anti-Streptococcus mutans PS14 (anti-SM) and anti-Streptococcus sanguis 10556 (anti-SS), were selected, because the cross-reactivities of the IgG antibodies with these streptococci were slight. The quantity ratios of IgG anti-SM antibodies and IgG anti-SS antibodies differed from person to person, ranging from about 1:1 to 1:6 in 129 healthy Japanese adults. ELISA was considered to be appropriate for assaying these antibodies because of its good intra-assay reproducibility. The IgG anti-SM/anti-SS quantity ratio was not related to sex, age or ABO blood group, and appeared to be unrelated to the "decayed, missing and filled teeth index" (DMF index). The anti-SM/anti-SS ratios were investigated for 12 months after the preparation of bloodstains. They remained almost unchanged for 8 months, although the reactivities of individual IgG antibodies began to decrease 3 to 5 months after preparation. These results indicate that the ratio of IgG anti-streptococcal antibodies in bloodstains is a very useful parameter in personal identification.

Antibodies, Bacterial↗
PubMed1980

Pilot results of DMF treatment time index.

The DMF Index and its components have been utilized by various researchers to measure aspects of the caries process ranging from prevalence of carious lesions to the amount of dental care needed. It is generally recognized that DMF Teeth (T) measures life-time caries experience and is not a good predictor of the amount of treatment time needed in population groups. The purpose of this study is to evaluate the ability of certain modifications of the DMFT components to predict the amount of treatment time needed. In a sample of 109 adult cases, normal and diseased conditions were coded along with the usual DMFT measures and the number of missing teeth needing replacement (NR). Corresponding treatment procedures related to caries (periodontal treatment was not coded) were recorded and then converted to treatment times using the Relative Productivity Unit (RPU). Stepwise multiple regression and discriminant analysis procedures were used. The number of D teeth was linearly related to treatment time, but the number of NR and M teeth were not. Regression procedures indicated that the square root values of D and NR were the best predictors of treatment time (RPU) and produced a multipler of 0.69. When patients were classified into categories of treatment time (low, medium, high), the DMF Treatment Time Index was able to correctly classify 70% of the cases into their appropriate treatment time category.

Adolescent↗