Abstract |
The radiocrystallographic study of 46 salivary calculi using the Debye and Scherrer powder methods showed that such stones, whether submaxillary, parotid or "accessory" consist essentially of hydroxyapatite with the frequent presence of tricalcium and octocalcium phosphates, Whitlockite and rarely Brushite and Calcite. In order for a stone to form, the following conditions would seem to be necessary; transient supersaturation of the saliva in Ca++ and PO4--, a pH greater than normal, intracellular precepitation of amorphous tricalcium phosphate which is transformed into crystalline hydroxyapatite and, then, the fixation of crystals on a "matrix" such as desquamated cells, fibrils and collagens.
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Authors | S Fichelson, C P Tran, T Frédiére, P Laudenbach |
Journal | Revue de stomatologie et de chirurgie maxillo-faciale
(Rev Stomatol Chir Maxillofac)
Vol. 79
Issue 1
Pg. 75-90
( 1978)
ISSN: 0035-1768 [Print] France |
Vernacular Title | Etude radiocristallographique de 46 calculs salivaires. Hypothéses physiopathogéniques. |
PMID | 276909
(Publication Type: English Abstract, Journal Article)
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Topics |
- Adolescent
- Adult
- Aged
- Crystallography
- Female
- Humans
- Male
- Middle Aged
- Salivary Duct Calculi
(diagnosis, etiology)
- X-Ray Diffraction
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