The effect of radiation of Nd:YAC laser on sealing ability in retrograde filling
- VernacularTitle:Nd:YAG激光照射对根尖倒充填术窝洞封闭性影响的初步研究
- Author:
Feng LIN
;
Dingming HUANG
;
Ping GAO
;
Guangning ZHENG
- Publication Type:Journal Article
- Keywords:
Nd:YAG laser;
Retrograde filling;
Apical seal;
Microleakage
- From:
Journal of Practical Stomatology
1996;0(02):-
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To discuss the effect of radiation of Nd:YAG laser in apical retrograde filling. Methods: 50 similar roots were randomly divided into 5 groups.The anatomical crowns were removed at the cementoenamel junction and the remaining roots were treated endodontically with conventional methods before the apical 2 mm were cut and a dish-like hole made in the cutting surface by high speed round bur. Except the first group,each hole were radiated by the Nd:YAG laser for different time or with different patterns and after that,the glass ionomer cement were retrofilled into the hole. A microleakage measurements were carried out and the result were measured and recorded. The hole surface was also observed under electron microscopy. Results:The leakage of the groups with Nd:YAG radiation were decreased significantly(P
