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A study was undertaken to find a standard method that would be relatively reproducible and would visualize the vascular changes in hard and soft tissues that accompany pathologic changes. Each tooth and its surroundings were found to have a complex vascular network that is directed to its particular function. Also each network is closely connected with other vascular networks; they form a complex blood supply source which, when necessary, can easily provide a compensatory blood supply.
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Garfunkel et al. (1971) studied this question.
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