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The effect of long‐wave ultraviolet radiation on gingival Langerhans cells
Author(s) -
Hogarth AnneMaree,
Newcomb Guy M.
Publication year - 1983
Publication title -
australian dental journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.701
H-Index - 71
eISSN - 1834-7819
pISSN - 0045-0421
DOI - 10.1111/j.1834-7819.1983.tb05276.x
Subject(s) - ultraviolet , irradiation , ultraviolet light , ultraviolet radiation , dentistry , chemistry , anatomy , materials science , medicine , radiochemistry , photochemistry , optoelectronics , physics , nuclear physics
A bstract — This study shows that the use of ultraviolet light polymerizing devices in dentistry does have some affect upon the gingiva. The labial gingiva and alveolar mucosa of albino rats were subjected to a single 5 min dose of radiation from either a polymerizing device which emits some ultraviolet irradiation or one which emits only visible light. In both cases a total dose of 20 J/cm 2 was used. The tissue was then examined histologically at various time intervals after irradiation. Negligible changes could be detected in H & E sections, however ATPase activity and Langerhans cell morphology were considerably altered in the Uvio‐Visio specimens in comparison to the Prisma and control specimens. The changes appeared to be reversible although they had not completely returned to normal after one week. It is also shown in this study that the use of rubber dam reduced the exposure of the soft tissues to ultraviolet light by 90 per cent.