Biomedical subjects
J Frencken
Publications and source records attributed to J Frencken.
[Foundation for Animal Aid of Venezuela in a scandal].
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The pattern of dental caries amongst 12-year-old rural children in Kenya and Tanzania.
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[Unequal femurs].
The femurs of a dog presented for lameness were found to be unequal in length. This was successfully treated by resection of the head of the femur. This patient was affected with rupture of the contralateral anterior cruciate ligament within six months.
Dental caries prevalence amongst 12-year-old urban children in East Africa.
It is commonly believed that the prevalence of dental caries in developing countries is increasing, though in Kenya and Tanzania there is insufficient information to confirm such trends. In order to test the hypothesis, therefore, 762 children in Dar es Salaam and 802 children in Nairobi aged 12 yr in 1984 were examined for dental caries as part of a baseline study to monitor changes of prevalence with time. Dental caries was recorded by surfaces using the criteria recommended by the WHO and examinations were performed by standardized examiners. The mean DMFT in Dar es Salaam of 0.67 (SD 1.20) was significantly higher than that for Nairobi, 0.51 (SD 1.23). No differences were found in the mean DMFS index. Nairobi children had a greater number of filled teeth and surfaces. Although a greater proportion of children were caries-free in Nairobi than in Dar es Salaam, amongst those with caries, Nairobi children had significantly higher DMFS scores, and a greater proportion with DMFS greater than 4. The possible reasons for such findings are discussed. The mean DMFT and DMFS reported here are amongst the lowest reported in the recent literature from both countries.
Tooth and surface patterns of dental caries in 12-year-old urban children in East Africa.
In this report on the findings of a baseline study designed to monitor changes in the prevalence of dental caries in 12-yr-old children in Dar es Salaam and Nairobi, the details relating to the pattern of carious attack on particular tooth and surface types are described. In both populations molars accounted for over 90% of all affected teeth and in both groups first molars were more affected than second molars. Very few anterior teeth were affected in either population, though caries of the incisors and canines accounted for a greater proportion of affected teeth in Nairobi (3.4%) than in Dar es Salaam (0.6%). Significantly more mandibular first and second molars were affected in Dar es Salaam than in Nairobi, though in Nairobi the maxillary first molars were more affected than in Dar es Salaam. Occlusal surfaces were the most common site for caries in both populations. With the exception of buccal surfaces, smooth surface caries tended to be higher in Nairobi than in Dar es Salaam. Dar es Salaam children had, however, a significantly higher mean DFS score for occlusal surfaces. The preponderance of occlusal caries indicates that relatively simple restorative care is required to meet the needs of the two populations, and it is suggested that such care could be largely provided by auxiliary dental personnel.