The effect of Nd:YAG laser irradiation combined with acidulated phosphate fluorid treatment on the acid resistance of human enamel
- VernacularTitle:激光照射与酸性氟磷酸盐联合应用对离体人牙齿釉质脱矿的影响
- Author:
Xiaoyan XU
;
Deyu HU
;
Huibin SUN
;
Xinbo YU
- Publication Type:Journal Article
- Keywords:
Lasers;
Acidulated phosphate fluoride;
Enamel;
Acid resistance
- From:
Journal of Practical Stomatology
2000;0(06):-
- CountryChina
- Language:Chinese
-
Abstract:
Objective: To study the effect of pulsed Nd:YAG laser irradiation combined with acidulated phosphate fluorid (APF) on the acid resistance of human dental enamel. Methods: Enamel samples were prepared from 192 caries-free extracted teeth. The smooth surface and pits and fissures were treated with 12 3 g/L APF for 4 minutes after 100,150 or 200 mJ pulsed Nd:YAG laser irradiation. Then the teeth were put into 12.3 g/L of artificial caries inducing solution (acid solution) for 1,5,10 or 24 h respectively. The control teeth were treated with APF only. The amount of calcium dissolved in the solution was determined with an atomic absorption spectrophotometer and the depth of artificial caries was measured with polarized microscope. Results: The amount of calcium dissolved in the acid solution was significantly less in the groups with laser treatment than that in those without laser treatment (P
