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| Year : 1997 | Volume
: 15
| Issue : 1 | Page : 20-4 |
Etching of young permanent teeth with acid gel--a comparison between the effect of 15 seconds & 60 seconds of etching.
NR Thosar, SG Damle
Dept. of Pedodontics & Preventive Dentistry, Nair Hospital Dental College, Mumbai
Correspondence Address:
N R Thosar
Dept. of Pedodontics & Preventive Dentistry, Nair Hospital Dental College, Mumbai
 Source of Support: None, Conflict of Interest: None  | Check |
PMID: 9522764 
The purpose of present study was to compare the effect of 15 seconds & 60 seconds of etching of young permanent teeth in vitro with 50% phosphoric acid gel using scanning electron microscope. 25 pairs of enamel surfaces selected for the study were divided into 3 experimental groups. The control group consisted of unetched enamel surfaces. In Group II, the effect of 50% phosphoric acid gel was compared with 37% phosphoric acid solution for 15 seconds whereas in group III, the effect of 15 seconds & 60 seconds of etching with 50% phosphoric acid gel was compared. The degree of etching pattern was evaluated by using scoring pattern from 1-3. Results showed no significant difference between the etching pattern obtained with the use of 37% solution and 50% gel for 15 seconds. But it was observed that etching with 50% for 15 seconds resulted in equal or even an enhanced etching pattern as compared to the pattern obtained in 60 seconds with 50% phosphoric acid gel.
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