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Biomedical subjects

A P Howat

Publications and source records attributed to A P Howat.

24 records · Page 2Linked to original sources
PubMed1980

Discriminatory ability of caries diagnosis from bitewing radiographs in caries prophylactic trials.

The discriminatory ability of radiological criteria in common use in clinical trials was tested on 99 female teenagers selected from a larger sample taking part in a 3-year caries prophylactic clinical trial. Four radiological caries diagnostic criteria were selected as generally representative of those in current use following a comprehensive review of the literature. A significant preventive effect was evident from the radiographic examination after 3 years. At this time a significant difference between mean DFS increments was recorded when enamel lesions were omitted (P smaller than 0.05). Although preventive treatment effects were evident at all diagnostic levels, the discriminatory abilities differed. The criterion "involvement of amelodentinal junction but not beyond" was most discriminatory.

Child↗
PubMed1979

Value of operating auxiliary personnel for caries diagnosis in dental epidemiology.

The ability of a suitably trained operating auxiliary to obtain similar diagnostic results to those of a dentist was tested on 200 11--12 year-old boys and girls selected from a larger sample taking part in a 3-year caries prophylactic clinical trial. A clinical and radiographic examinati-n of all children was performed by both examiners at the beginning of the study and at three subsequent yearly examinations. The reliability of the caries prevalence and incremental data was high for both the dentist and hygienist. Differences between mean caries scores were consistently found between the examiners at the initial lesion level for clinical and radiographic diagnosis. Over the incremental periods of the study neither examiner revealed a significant difference between control and test groups until the end of the 3rd year when both measured a significant difference in mean DMFS at the clinical cavitation level, 26.2% for the dentist and 25.2% for the hygienist.

Child↗