Effect of two different tetracycline hydrochloride on periodontally affected human dentin. A scanning electron microscope study

Abstract

The purpose of the present.study was to explore the possibility of obtaining an acceptable smear layer removing effect following etching with two different tetracycline hydrochloride (solution and gel). A flat dentin surface was created on human teeth extracted due to severe periodontitis. 60 specimens were divided into 5 equal groups and etched in the following way: (group I) saline; (group II & III) TIc Hel solution for 1 & 3 min, (group IV & V) TIc gel for] & 3 min. It was found that tetracycline hydrochloride gel eye ointment was not sufficient to dissolve the smear layer while.Ttc Hc1 solution dissolve it. Based on these findings, TIc Hcl solution would be applied on dentin some where between ] and 3 min in order to obtain an acceptable removing effect.