|
KMID : 0358920010280035112
|
|
Journal of the Korean Academy of Pedodontics
2001 Volume.28 No. 3 p.5112 ~ p.521
|
|
|
A STUDY ON MICROLEAKAGE OF PIT AND FISSURE SEALANT AFTER ENAMEL SURFACE TREATMENT
|
|
Hyun Hong-Keun
Kim Jung-Wook
Lee Sang-Hoon
|
|
|
Abstract
|
|
|
|
Recently. the reintroduction of air-abrasion technology in dentistry has added a new potential method of pretreating teeth prior to placing sealants. The purpose of this in vitro study was to investigate microleakages of several pit and fissure sealants following various surface pre-treatment methods to the enamel, because there was a question concerning the validity of claim that this method was better than the conventional acid etching. Permanent molars were divided randomly into nine groups and treated accordingly: acid etching(group 1, 4, 7), air-abrasion(group 2, 5, 8), acid etching after air-abrasion(group 3, 6, 9). Then the authors placed and cured the three kinds of sealants(group : Teethmate-F, group : Ultraseal XT plus, group : Denseal) according to the manufacturer’s order. They were observed to determine the degree of microleakage. And these specimens were separated from the corresponding enamels and examined by Scanning Electron Microscope. The following results were obtained: 1. In comparing microleakage among tooth surface treatment methods, air-abrasion group(group 2, 5, 8) showed the greatest microleakage, while combination(air-abrasion + acid etching) group showed the least (p<0.05). However, no significant differences were found between group 7 and 9. 2. The mean microleakages were ranked as follows(p<0.05): In acid etching groups, group 7> group 4> group 1. In air-abrasive groups, group 8>groups 5> group 2. In combination groups, group 9>group 3> group 6. However, no significant differences were found between group 4 and 7 between group 2 and 5 and between group 3 and 6. 3. SEM showed that comparably longer resin tags were distributed regularly in acid etching groups and that shorter ones irregularly in air-abrasion groups. It also showed that these two kinds of tags were distributed simultaneously in combination groups.
|
|
|
KEYWORD
|
|
|
Microleakage, Air-abrasion, Acid etching, Enamel surface treatment, Sealant, Scanning Electron Microscope
|
|
|
FullTexts / Linksout information
|
|
|
|
|
Listed journal information
|
|
|
|