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TETRACYCLINE‐INDUCED TOOTH CHANGES, PART 3 INCIDENCE IN EXTRACTED FIRST PERMANENT MOLAR TEETH
Author(s) -
Baker K. L.,
Storey E.,
A Franker M.
Publication year - 1970
Publication title -
medical journal of australia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.904
H-Index - 131
eISSN - 1326-5377
pISSN - 0025-729X
DOI - 10.5694/j.1326-5377.1970.tb77754.x
Subject(s) - molar , tetracycline , dentistry , permanent teeth , deciduous teeth , hypoplasia , medicine , incidence (geometry) , anterior teeth , orthodontics , antibiotics , biology , mathematics , geometry , microbiology and biotechnology
Examination under ultraviolet light of 420 extracted first permanent molar teeth shows an Increasing prevalence of tetracycline fluorescence with decreasing age. In children aged six and seven years, 71% of teeth show tetracycline deposits. detailed analysis of the distribution of antibiotic in teeth demonstrates that, from 1954, tetracycline usage Increased rapidly until about 1960–1965, and then fell. This recent trend In permanent teeth is confirmed In deciduous teeth extracted from preschool children attending the Royal Dental Hospital of Melbourne. Tetracycline‐associated hypoplasia and discoloration have increased since 1959, and administration of the antibiotic In the first three years of life is associated with a high risk of permanent molar tooth affection; in teeth at risk, the chances of some degree of discoloration are 32% and of hypoplasia 26%.