치과용 지혈제가 상아질 투과도에 미치는 영향
THE EFFECT OF HEMOSTATIC SOLUTION ON DENTIN PERMEABILITY
김종현, 심준성, 이근우,
소속 상세정보
김종현 ( Kim Chong-Hyun ) - 연세대학교 치과대학 치과보철학교실
심준성 ( Shim June-Sung ) - 연세대학교 치과대학 치과보철학교실
이근우 ( Lee Keun-Woo ) - 연세대학교 치과대학 치과보철학교실
KMID : 0362420000380040472
Abstract
Before impression making in the fixed restorations or other prosthesis, hemostatic solutions are used for hemostasis and moisture control. Hemostatic solutions effectively control bleeding but their major ingredients, acid removes smear layers which are formed in the tooth preparation, exposes the dentinal tubular orifices which are occluded by smear layers, makes dentinal tubular fluid displace more easily to the various external stimulus, and according to the hydrodynamic theory, consequently causes dentin hypersensitivity. To know the effect of hemostatic solutions on dentin permeability, coronal dentin discs, 1 mm in thickness, were prepared from extracted third molars free from decay and wear, and a spilt chamber device was used. Hydraulic conductance values and SEMs, which were measured before and after treatment with Astringedentr , Altract and Epri-dent , were compared and analyzed. The following conclusion were drawn : 1. Hydraulic conductance values which wee measured after the treatment of hemostatic solutions were increased in all groups(p<0.05). 2. %change values of hydraulic conductance were compared but no significant difference was found among the three hemostatic solutions(p<0.05). 3. On SEM observations of all groups, after treatment smear layers were removed and dentinal tubular orifices were partially exposed. On the basis of these conclusions, the reckless use of hemostatic solutions should be restricted, and when in use, various methods should be considered to protect dentin.
키워드
Dentin permeability; Hemostatic solution; Dentin hypersensitivity; Smear layer; Hydrodynamic theory
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