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Your search keyword '"du Plessis, J."' showing total 2 results
Start Over Author "du Plessis, J." Region botswana
2 results on '"du Plessis, J."'

1. Changes in vitamin A and C levels in black mine-workers.

Author

Visagie ME, Du Plessis JP, Groothof G, Alberts A, and Laubscher NF

Subjects
Ascorbic Acid Deficiency epidemiology, Black People, Botswana ethnology, Carotenoids blood, Diet, Humans, Mozambique ethnology, Serum Albumin analysis, South Africa, Time Factors, Vitamin A Deficiency epidemiology, Black or African American, Ascorbic Acid blood, Mining, Occupational Medicine, Vitamin A blood
Published
1974

2. Comparison of two fluorosis indices in the primary dentition of Tswana children.

Author

Burger P, Cleaton-Jones P, du Plessis J, and de Vries J

Subjects
Botswana, Child, Child, Preschool, Female, Fluorosis, Dental epidemiology, Humans, Infant, Male, South Africa, Fluorosis, Dental diagnosis, Tooth, Deciduous pathology
Abstract

Fluorosis of the primary dentition was determined in 146 children living in a hot, dry African village with a fluoride concentration in the drinking water of 0.98-2.7 ppm. The prevalence of fluorosis was compared using DEAN's (8) and THYLSTRUP & FEJERSKOV's (14) indices. The prevalence varied according to tooth type, being highest in maxillary second molars (25%) and lowest in mandibular central incisors (4.6%). The two scoring systems produced almost identical prevalences of fluorosis but the severity scores varied. Generally THYLSTRUP & FEJERSKOV's index scores were one score higher than DEAN's. The THYLSTRUP & FEJERSKOV index is recommended for future studies.

Published
1987
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