Original scientific paper
Influence of Acid Lactic on Dentin Tissue of Different Age and Different Locality
Zlata Jugović-Gujić
; Zavod za dentalnu patologiju Stomatološkog fakulteta Sveučilišta u Zagrebu, Zagreb, Hrvatska
Dora Najžar-Fleger
; Zavod za dentalnu patologiju Stomatološkog fakulteta Sveučilišta u Zagrebu, Zagreb, Hrvatska
Boris Uzelac
; Privatna stomatološka ordinacija, Hrvatska
Abstract
In this study the amount of extracted calcium from pieces of healthy
tooth dentin was escamined taken from young and old persons under
lactic acid demineralization challenge (pH 3.3). AAS method was
used and results expressed in /Ug/mm2/h. Initial speed direction coefficient was also performed', to show calcium ions dissolution of the samples o f different age and locality. The greatest loss o f calcium ions was observed in the first hour of measurement in each group sample. The younger dentin samples released calcium faster than the older ones, although this difference was statistically relevant only after the third measurement (p<0.05). Mean values of initial speed were also higher in younger than in older samples. The difference in the dissolution ability o f some o f the samples in dicates
that each sample has its own dissolution diagram in the our environment. This fact has been connected with the arrangement and
ratio of calcium salts in the samples.
Keywords
dentin; extraction of calcium ions; initial speed; lactic acid
Hrčak ID:
97865
URI
Publication date:
15.6.1998.
Visits: 1.164 *