Scanning electron microscopy revealed partial removal of the smear layer or an etching effect of dentin as a result of the application of hemostatic agents on dentin .
PRACTICAL IMPLICATION S Adhesive procedures may be affected adversely when performed on dentin and enamel contaminated by hemostatic agents .
Hemostatic agents may induce changes in the dentin surface morphology .
The results of this review indicate that the bond strength of self-etching adhesive systems is affected more negatively than is that of etch- and -rinse systems .
BACKGROUND Hemostatic agents have been used clinical ly in dentistry for many years to control bleeding .
Effects of gingival retraction materials on gingival blood flow.
PURPOSE The effects of 2 chemical retraction agents on gingival blood flow and systemic blood pressure in subjects with healthy gingiva were investigated . MATERIAL S AND METHODS Thirty volunteer dental students were selected for the study and r and omly divided into 2 groups . Aluminium chloride-impregnated cord ( right side ) and nonimpregnated cord ( left side ) were placed in the gingival sulcus of group 1 . Epinephrine-impregnated cord ( right side ) and nonimpregnated cord ( left side ) were placed in group 2 . Blood flow in the retracted marginal gingiva was measured by laser Doppler flowmetry , and the systemic blood pressures of subjects were recorded before and after the retraction procedure . RESULTS A statistically significant decrease in blood flow was observed in group 2 , but there was no significant change in gingival blood flow in group 1 . A decrease in diastolic blood pressure of the subjects in group 2 was also observed . However , there was no significant change in blood pressure of the subjects in group 1 . CONCLUSION Gingival retraction affects gingival blood flow temporarily . Epinephrine-impregnated cords can be used safely in patients who have healthy gingiva , if patient stress and gingival trauma are avoided during cord placement
Scanning electron microscopy revealed partial removal of the smear layer or an etching effect of dentin as a result of the application of hemostatic agents on dentin .
PRACTICAL IMPLICATION S Adhesive procedures may be affected adversely when performed on dentin and enamel contaminated by hemostatic agents .
Hemostatic agents may induce changes in the dentin surface morphology .
The results of this review indicate that the bond strength of self-etching adhesive systems is affected more negatively than is that of etch- and -rinse systems .
BACKGROUND Hemostatic agents have been used clinical ly in dentistry for many years to control bleeding .