Effects of a nonrinse conditioner and 17% ethylenediaminetetraacetic acid on the etch pattern of intact human permanent enamel

Citation
Zc. Cehreli et N. Altay, Effects of a nonrinse conditioner and 17% ethylenediaminetetraacetic acid on the etch pattern of intact human permanent enamel, ANGL ORTHOD, 70(1), 2000, pp. 22-27
Citations number
40
Categorie Soggetti
Dentistry/Oral Surgery & Medicine
Journal title
ANGLE ORTHODONTIST
ISSN journal
00033219 → ACNP
Volume
70
Issue
1
Year of publication
2000
Pages
22 - 27
Database
ISI
SICI code
0003-3219(200002)70:1<22:EOANCA>2.0.ZU;2-C
Abstract
The purpose of this study was to evaluate the effects of 2 new acid-etching solutions, nonrinse conditioner (NRC) and 17% ethylenediaminetetraacetic a cid (EDTA), on enamel surface morphology, and to compare the new solutions with traditional 37% phosphoric acid. The effect of prolonged etching time was also investigated. The buccal surfaces of 80 extracted third molars wer e etched with one of the 3 acids for 15, 30, or 60 seconds. The central reg ions of the specimens were examined with a scanning electron microscope. Sh orter etching time with phosphoric acid resulted in a relatively smooth ena mel surface compared with longer treatments. Irrespective of treatment time , NRC produced an aprismatic etch pattern, which suggested a potentially re tentive morphological character. EDTA treatment had the least effect of all etchants tested.