9894
document
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 .
9895
Intervention_Physical
hand excavation
9896
Intervention_Physical
bur excavation
9897
Intervention_Physical
air-abrasion
9898
Intervention_Physical
laser ablation
9899
Intervention_Physical
chemomechanical methods
9900
Intervention_Physical
sono-abrasion
9901
Intervention_Physical
replicated and gold-coated
9902
Outcome_Other
removal techniques
9903
Outcome_Other
effect of different caries removal techniques
9904
Outcome_Other
hand excavation
9905
Outcome_Other
bur excavation
9906
Outcome_Other
air-abrasion
9907
Outcome_Other
laser ablation
9908
Outcome_Other
chemomechanical methods
9909
Outcome_Other
sono-abrasion
9910
Outcome_Other
residual smear layer
9911
Outcome_Physical
patent orifices of dentinal tubules
9912
Participant_Condition
caries removal techniques on human dentin .