X-Ray Crystallographic Examination of Calculi from Salivary Glands
- 1 October 1952
- journal article
- research article
- Published by SAGE Publications in Journal of Dental Research
- Vol. 31 (5), 620-626
- https://doi.org/10.1177/00220345520310050401
Abstract
26 surgically-removed calculi were examined by a high-dispersion X-ray powder method. 21 calculi contained only colloidal apatite, 2 only colloidal whitlockite, 12 mixtures of apatite and whitlockite; 2 calculi also contained traces of calcite. Whitlockite is extremely rare in Ca phosphates deposited in the body. Hence it is concluded that the saliva often, perhaps always, contains a factor which impedes the normal crystallization of apatite.Keywords
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