A scanning electron microscopic study of different caries removal techniques on human dentin.
Scanning electron microscopy (SEM) evaluated the effect of different caries removal techniques on human dentin topography. Thirty-six extracted human carious mandibular molars were randomly assigned to six groups according to caries removal technique. Carious tissue was removed by hand excavation, bur excavation, air-abrasion, laser ablation, chemomechanical methods and sono-abrasion. The remaining dentin surfaces were replicated and gold-coated. The surfaces were examined using SEM and distinct differences in appearance were observed among specimens treated with different caries removal techniques. While hand-excavated, bur-excavated and air-abraded carious dentin surfaces were covered with a residual smear layer, sono-abrasion with patent dentinal tubules completely removed the smear layer. A few patent orifices of dentinal tubules were observed in dentin subjected to laser ablation and chemo-mechanical caries removal.
Hacettepe University. muharrem.yazici@isbank.net.tr
A Rüya
AR
Yazici
Gül
G
Ozgünaltay
Berrin
B
Dayangaç
D000328:Adult; D000399:Air Pressure; D000537:Aluminum Oxide; D003731:Dental Caries / Q000473:pathology* / Q000628:therapy; D003737:Dental Cavity Preparation / Q000295:instrumentation / Q000379:methods*; D003804:Dentin / Q000187:drug effects / Q000648:ultrastructure*; D019243:Enamel Microabrasion; D004867:Equipment Design; D018698:Glutamic Acid / Q000627:therapeutic use; D006801:Humans; D053685:Laser Therapy; D007930:Leucine / Q000627:therapeutic use; D008239:Lysine / Q000627:therapeutic use; D008855:Microscopy, Electron, Scanning; D008963:Molar; D016628:Replica Techniques; D016369:Smear Layer; D014464:Ultrasonic Therapy
C119934:Carisolv; D018698:Glutamic Acid; D007930:Leucine; D008239:Lysine; D000537:Aluminum Oxide