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Journal of Dental Research, Vol 56, 1453-1462, Copyright © 1977 by International & American Associations for Dental Research Online Journals

ARTICLES

Determination of phase transitions in gutta-percha by differential thermal analysis

H. M. Rootare and J. M. Powers

Pure gutta-percha was heat-treated in a differential thermal analyzer. The high melting form crystallized on cooling when gutta-percha was heated to 70 C or less. Above 74 C, crystallization into the low melting form predominated. Either polymorph can be selectively crystallized by control of the heat-treatment temperature before cooling.




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