Abstract
Pocket formation is a most prominent symptom of the periodontal disease. Cementum facing to the pocket became exposed and soaked to the pocket and oral environment receiving several pathologic changes. The most striking feature of these changes is that in chemical composition. However, conflicting results have been reported on the distribution pattern of major element and also on the presence or absence of minor element in the exposed root surfaces mostly because of scanty of similar works. This study was intended to compare the distribution pattern of some chemical element between unexposed (healthy) and exposed human cementum using electron probe microanalyser.
The point by point analysis of polished cemental surface showed that wide variation of ditribution pattern of element was observed, however, the consistent emergence of Ca and P, and frequent appearance of Mg, Na, Al, Si, S, Cl, Cu and Zn could be recognized in both exposed and unexposed specimen. Among those found in unexposed cementum, Fe was a sole element which failed to find in exposed cementum. By linear scan analysis, Ca and P increased its concentration at surface area in some specimen of exposed cementum. This result was confirmed statistically (P<0.01) by quantitative analysis of Ca and P using Fluor apatite as a control.
