The effect of additional enamel etching on microleakage of the adhesion of self-etching primer system.
10.5395/JKACD.2003.28.5.363
- Author:
Jung Jin YOON
1
;
Kyung San MIN
;
Chan Ui HONG
Author Information
1. Department of Conservative Dentistry, College of Dentistry, Dankook University, Korea. endohong@hanmail.net
- Publication Type:Original Article
- Keywords:
Self etching primer;
Microleakage;
Electrometer;
Phosphoric acid;
Electrochemical method;
Enamel etching
- MeSH:
Dental Enamel*;
Dental Pulp Cavity;
Humans;
Incisor;
Paint;
Stainless Steel;
Tooth;
Water
- From:Journal of Korean Academy of Conservative Dentistry
2003;28(5):363-368
- CountryRepublic of Korea
- Language:Korean
-
Abstract:
The purpose of this study is to evaluate the effect of additional enamel etching with phosphoric acid on the microleakage of the adhesion of self-etching primer system. Class V cavity(4 mmx3 mmx1.5 mm) preparations with all margins in enamel were prepared on buccal surface of 42 extracted human upper central incisor teeth. Prepared teeth were randomly divided into 3 groups. Group 1 : no additional pretreatment with 37% phosphoric acid (NE). Group 2 : additional pretreatment with 37% phosphoric acid for 10 seconds (E10s). Group 3 : additional pretreatment with 37% phosphoric acid for 20 seconds (E20s). The adhesives(Clearfil SE Bond(R), Kuraray, Osaka, Japan) and composite resins(Clearfil AP-X(R), Osaka, Kuraray, Japan) were applied following the manufacturer's instructions. All the specimens were finished with the polishing disc(3M dental product, St Paul, MN, USA), thermocycled for 500 cycles between 5degrees C and 55degrees C and resected apical 3-mm root. 0.028 stainless steel wire was inserted apically into the pulp chamber of each tooth and sealed into position with sticky wax. Surrounding tooth surface was covered with a nail varnish 2 times except areas 1 mm far from all the margins. After drying for one day, soaked the samples in the distilled water. Microleakage was assessed by electrochemical method(System 6514, Electrometer(R), Keithley, USA) in the distilled water. In this study, the microleakage was the lowest in group 1(NE) and the highest in group 3(E20s)(NE
