Caries progression in 12‐to 16‐year‐old schoolchildren in fluoridated and fluoride‐deficient areas in Brazil

Lawrence, Herenia P.; Sheiham, Aubrey

doi:10.1111/j.1600-0528.1997.tb01730.x

Cited by 26 publications

(29 citation statements)

References 28 publications

(21 reference statements)

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“…Likewise, the likelihood of adults living in urban areas having 20 or more teeth was 23% greater (OR = 1.23; 95%CI: 1.09-1.39) than those living in rural areas ( Table 3). As for individual variables, the highest functional dentition rates were in younger individuals (35)(36)(37)(38)(39) …”

Section: Resultsmentioning

confidence: 99%

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The association between individual and contextual factors and functional dentition status among adults in Rio Grande do Sul State, Brazil: a multilevel study

Koltermann¹,

Giordani²,

Pattussi³

2011

Cad. Saúde Pública

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Functional dentition plays an important role in maintaining masticatory function, which is closely related to the number of teeth present in the mouth. The objective of this study was to investigate the association between individual and contextual factors and functional dentition (defined IntroductionTooth loss is one of the main public health problems affecting the adult population worldwide 1 . This situation directly and indirectly influences the individual's overall health. Compromised masticatory function affects quality of diet, increasing the risk of various health problems like cardiovascular diseases, physical disabilities and even death 2,3 . Edentulous individuals show lower consumption of important macro and micronutrients as compared to those with functional dentition 4,5 . For example, edentulism without rehabilitation with prostheses has been associated with reduced intake of carbohydrates, vitamins, and minerals 4 . Obesity 3 and malnutrition 5 have also been linked to tooth loss.There are various causes of tooth loss, the main ones being dental caries and periodontal disease. Other factors include access to dental services, health system organization, and oral health care 6,7 . Higher tooth loss rates have been associated with unfavorable socioeconomic conditions 8,9 .Functional dentition plays an important role in maintaining masticatory function, which is closely related to the number of teeth present in the mouth 10,11,12 . According to this concept, maintenance of functionality requires a minimum of 20 teeth well distributed in the upper and lower dental arches. In 1992, the World Health Organization (WHO) declared the lifetime reten-ARTIGO ARTICLE

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Section: Resultsmentioning

confidence: 99%

“…groups with distinct socioeconomic conditions 35,36,37 . Analyzing data from adults in Rio Grande do Sul State, the current study showed a positive association between higher functional dentition rates and longer exposure to fluoridated water supply.…”

Section: Discussionmentioning

confidence: 99%

The association between individual and contextual factors and functional dentition status among adults in Rio Grande do Sul State, Brazil: a multilevel study

Koltermann¹,

Giordani²,

Pattussi³

2011

Cad. Saúde Pública

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“…Several studies, also in recent years, evaluating caries diagnostic tests have used the κ coefficient for expressing intra-and inter-observer reproducibility [Ekstrand et al, 1997;Lawrence and Sheiham, 1997;Naitoh et al, 1998] but, to the knowledge of the authors, statistical testing of differences between κ values has not been done previously. The κ coefficient may obtain values between -1 and +1.…”

Section: Discussionmentioning

confidence: 99%

Reproducibility in the Assessment of Caries Lesion Behaviour: A Comparison between Conventional Film and Subtraction Radiography

2000

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The purpose of this study was to compare reproducibility in the assessment of caries lesion behaviour in digital subtraction images and conventional radiographs. Ninety–seven pairs of conventional film bite–wings were included. The radiographs had been taken with a Kwik–Bite filmholder without further standardisation. The selection criterion was that at least one surface imaged in a bite–wing pair should show progresssion of a caries lesion from the first exposure to the second. The time interval between the bite–wings was 1–2 years. The radiographs were scanned into a personal computer and the two images from the same patient subtracted. Seven observers scored the subtraction images and the conventional films. The scale was based on no change/ change in surface appearance scored in the following categories: 0 = no change; 1 = development of a new caries lesion in enamel; 2 = development of caries lesion in enamel and dentine/progression of an existing enamel lesion into dentine/progression of a dentinal lesion further into dentine; 3 = development of secondary caries; 4 = new filling/change of filling/extension of filling. Cohen’s κ coefficients were calculated for intra– and inter–observer agreement for the two radiographic methods separately. The κ value served as the statistical sampling unit for testing differences between the two methods (Wilcoxon’s test for ranked pairs). The average intra–observer κ value was 0.875 (range 0.775–0.958) for the subtraction images and 0.758 (range 0.560–0.890) for the conventional radiographs. The difference was statistically significant (p<0.05). For inter–observer agreement, the κ values were lower than for intra–observer agreement. The average value was 0.678 (range 0.485–0.754) for the subtraction images and 0.701 (range 0.497–0.817) for the conventional radiographs (p>0.1). This study suggests a new way of comparing reproducibility in terms of κ values between diagnostic methods in clinical studies where accuracy cannot be evaluated. The subtraction method may be useful in the assessment of caries lesion behaviour in the clinic.

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“…Of the 50% that progressed into dentine, 20% did so in 1.2 years [Mejare et al, 1998[Mejare et al, , 1999. In areas with water fluoridation, the progress rates of caries were slightly slower [Lawrence et al, 1997;Lith et al, 2002]. The distal surfaces of the lower first molar and upper second premolars are at higher risk for a relatively faster progression of caries from enamel to dentine [Mejare et al, 1999].…”

Section: Rates Of Progression Of Demineralization Through Enamel and mentioning

confidence: 99%

Using Universal Patterns of Caries for Planning and Evaluating Dental Care

Sheiham¹,

Sabbah²

2010

Caries Res

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There are universal patterns of caries, in terms of prevalence, incidence, frequency distribution and rates of progression, in permanent teeth that can be considered working rules that can be applied when planning dental care. The universal patterns are: (1) caries levels follow trend lines; therefore, knowing the caries level at one age can be used to predict the levels at later ages in that cohort by looking at the trend line for that cohort; (2) the distribution of dental caries of a population exhibits the following characteristics: as the mean DMFT increases, the percentage of caries-free individuals falls and the caries distribution widens; this changing relationship between the mean DMFT and prevalence is not limited to a subgroup of the population who already have had some caries experience; (3) there is a specific mathematical relationship between the mean DMFT and mean DMFS; (4) there is a hierarchy of caries susceptibility by tooth type and sites on teeth; for a given DMFT or DMFS, there is a specific intra-oral pattern of caries by tooth type; (5) changes in mean DMFT scores for individuals and groups are not linear, but ‘stepped’; there are groupings of teeth and tooth sites that may have similar ‘resistance’ to caries; (6) as the mean DMFT declines, the posteruptive time for initiation of caries increases and the progression rate of caries through enamel decreases. This is true regardless of the presence of fluoride. Any improvement in dental health will cause this effect.

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Caries progression in 12‐to 16‐year‐old schoolchildren in fluoridated and fluoride‐deficient areas in Brazil

Abstract: These results suggest that water fluoridation reduces the rates of caries progression through the enamel and dentin, but the effect was more pronounced for lesions in the inner enamel than for those in the dentin.

Cited by 26 publications

References 28 publications

The association between individual and contextual factors and functional dentition status among adults in Rio Grande do Sul State, Brazil: a multilevel study

The association between individual and contextual factors and functional dentition status among adults in Rio Grande do Sul State, Brazil: a multilevel study

Reproducibility in the Assessment of Caries Lesion Behaviour: A Comparison between Conventional Film and Subtraction Radiography

Using Universal Patterns of Caries for Planning and Evaluating Dental Care

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