The Detection of Carious Lesions on the Proximal Surfaces of Teeth

Barr, John H.; Gresham, A H

doi:10.14219/jada.archive.1950.0151

Cited by 14 publications

(3 citation statements)

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“…Where N is 300, differences of 8 per cent fall within the 0.05 level of confidence, differences of 10 per cent within the 0.02 level, and differences of 12 per cent or more fall within the 0.01 level of significance. Where N exceeds 500, differences of 6 on the basis of surviving teeth. It may be inferred that many of the missing teeth have been lost solely by reason of proximal caries attacks, if it is found that other types of attack are much less frequent on the teeth surviving for study.…”

Section: Statistical Evaluation Of Percentage Differencesmentioning

confidence: 99%

Incidence of Caries at Different Locations on the Teeth

1957

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HE published literature indicates little concern about information on the 1 distribution of various attacks further than counts of the average number of teeth or surfaces per mouth affected by caries; and there is already evidence to suggest that neither of these measures may have more than limited value.From the studies which have been made of the distribution of the caries attack on teeth by specific types, locations, or surfaces, only a very incomplete picture may be glimpsed. It is surprising, in the face of the tremendous effort that has been made to learn the nature of the various process through the past 60 years, that this aspect of the problem has apparently not attracted closer attention.All the earlier studies of the kind indicated have been characterized by various limitations, though collectively they may be viewed as offering a valuable nucleus of information. Arnim3 analyzed data from several independent surveys into a kind of rating, by tooth surfaces affected; limited in their value, however, by the absence of radiographic findings for proximal attacks, and by an arbitrary grouping of attack frequencies into 5 categories. One of the present authors5 has presented more detailed data on proximal attacks, but it was limited to median age levels of from 7.5 to 22.5 years, and did not report the pit or fissure or the cervical attacks. More recently, Dirks, Winkler, and Van Aken14 and Galagan and Vermillion,17 intending primarily to study the radiographic technic for examination of proximal surfaces, have presented data confined to proximal surfaces of posterior teeth in adolescents. These studies, even collectively, offer neither a sufficiently comprehensive range nor are they on a properly comparable basis so as to permit the compilation of figures to indicate the pattern of incidence of caries by location or type for each tooth of the dentition. DESIGN OF STUDYOpportunity was taken to add to a comprehensive program, planned for study of the epidemiology of periodontal disease, sufficient additional examinations to provide data on the distribution of various attacks on the teeth. The

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Section: Statistical Evaluation Of Percentage Differencesmentioning

confidence: 99%

Incidence of Caries at Different Locations on the Teeth

1957

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“…Therefore it is almost impossible to align the X-ray beam so that no overlapping occui's. Some stttdies have suggested that separate molar and premolar films are taken to overcome this problem (18,19), In the primary dentition this is less of a problem because the tangential lines through the contacts are usually less divergent.…”

Section: X-rav Beatn Deviatiotis 115mentioning

confidence: 99%

Investigation into the relationship between deviations in X‐ray angulation and images of proximal overlapping on bite‐wing radiographs

McDonald

1984

Comm Dent Oral Epid

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Eleven child skulls were radiographed through a range of 50 degrees by varying the horizontal angulation of the X-ray beam in steps of 2 or 5 degrees. The changes in the width of overlapping contact images and the ranges through which no overlap occurred were measured. A linear relationship between changes in X-ray beam angulation and overlap width was found in all the skulls. Using the data it was calculated that for each increase in overlap width of 0.1 mm, 95% of the deviations in X-ray beam angulation were less than 2.5 degrees. The findings of this study suggested that the positioning of the X-ray beam so as to cause no overlapping is at best difficult, and at worst impossible. They also emphasize the importance of using identical projections in estimating the progress of carious lesions on radiographs since small changes can cause overlaps. The use of methods that reduce the error in repositioning the X-ray beam may be important in reducing methodological errors in clinical research.

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“…An essential source of information for this task is intraoral radiography, especially the bitewing projection [Barr and Gresham, 1950;Hansen 1980;Kidd and Pitts, 1990]. However, investigations have shown that dentists achieve only a modest level of accuracy and agreement in the diagnosis of caries on approximal surfaces from radiographs [Douglas et al, 1986;Gröndahl, 1989;Kantor et al, 1985;Mileman et al, 1992;White et al, 1988White et al, , 1984.…”

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confidence: 99%

The Effect of a Knowledge-based, Image Analysis and Clinical Decision Support System on Observer Performance in the Diagnosis of Approximal Caries from Radiographic Images

Firestone

Sema

Heaven³

et al. 1998

Caries Res

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The aim of this study was to investigate the effect of a knowledge-based image analysis and clinical decision support system (CariesFinder™, CF) on diagnostic performance and therapeutic decisions. The study material consisted of radiographic images of 102 approximal surfaces, 35 sound, 67 caries (25 caries and cavitated and 42 caries). Sixteen general practitioners were presented with (1) radiographic film images and (2) digital filmless images with the results of CF. The viewers were asked to respond whether approximal caries was present and whether a restoration was indicated. Responses were analyzed for accuracy, sensitivity, specificity and agreement. Further, the practitioners were ranked according to the accuracy of their restorative decisions and assigned to ten overlapping groups of 7 practitioners. For each group the diagnostic and therapeutic decisions were then examined for unanimity. The parameters of accuracy, sensitivity and specificity were then established for each group based on only unanimous, correct decisions. The diagnostic and therapeutic accuracy of CF alone was equal or superior to the decisions of the practitioners viewing film images alone. For unanimous decisions, CF alone was more accurate than the most accurate group of practitioners and made fewer incorrect decisions to restore non-cavitated surfaces than the practitioners. In general, dental practitioners viewing the results of CF significantly increased their ability to diagnose caries correctly, their overall diagnostic accuracy, and their ability to recommend restorations for cavitated surfaces. There was a decrease in the accuracy of their restorative decisions overall and in the specificity in particular.

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The Detection of Carious Lesions on the Proximal Surfaces of Teeth

Cited by 14 publications

References 0 publications

Incidence of Caries at Different Locations on the Teeth

Incidence of Caries at Different Locations on the Teeth

Investigation into the relationship between deviations in X‐ray angulation and images of proximal overlapping on bite‐wing radiographs

The Effect of a Knowledge-based, Image Analysis and Clinical Decision Support System on Observer Performance in the Diagnosis of Approximal Caries from Radiographic Images

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