레진강화형 글래스아이오노머 바니쉬를 이용한 상아세관의 폐쇄 평가 - 상아세관액 흐름의 실시간 측정 및 주사전자현미경 관찰
Evaluation of dentinal tubule occlusion by RMGI (resin-modified glass ionomer) varnish : real-time measurement of dentinal fluid flow and SEM
김민호, 김진영, 임범순, 최낙삼, 이인복,
소속 상세정보
김민호 ( Kim Min-Ho ) - 서울대학교 치의학대학원 치과보존학교실
김진영 ( Kim Jin-Young ) - 서울대학교 치의학전문대학원 치과보존학교실
임범순 ( Lim Bum-Soon ) - 서울대학교 치의학대학원 치과생체재료과학교실
최낙삼 ( Choi Nak-Sam ) - 한양대학교 기계공학과
이인복 ( Lee In-Bog ) - 서울대학교 치의학대학원 치과보존학교실
KMID : 1035320150420010057
Abstract
The purpose of this study was to compare the occlusive effect of a resin-modified glass ionomer (RMGI) varnish and an oxalate-based desensitizing agent on exposed dentin by evaluating the flow dynamic of dentinal fluid and SEM evaluation of the dentin surface after treatment. Sixteen caries- and restoration-free extracted molars were fixed to slide glasses after horizontally sectioning the roots at 5 mm below the cemento-enamel junction (CEJ). The prepared specimen was connected to a fluid flow measuring device (nano-Flow), and verified no fluid leakage. A V-shaped cavity was prepared at the CEJ to expose the dentin surface, which was then acid-etched, washed, and blot dried. The surface was treated either with an RMGI (Clinpro XT varnish) or an oxalate-based desensitizing agent (SuperSeal) (n=8). A real-time fluid flow was measured throughout the procedures. The fluid flow rates before and after each treatment were evaluated, and the surfaces of the treated dentinal tubules were also examined with SEM. A significant reduction in the rate of fluid flow was observed after treatment in both groups (p<0.05). Clinpro XT varnish exhibited a greater reduction in the fluid flow rate than SuperSeal (p<0.05). SEM evaluation revealed that the size of dentinal tubules was reduced as a result of the deposition of RMGI and oxalate crystals in Clinpro XT varnish and SuperSeal, respectively. Both agents reduced the fluid flow rate, with Clinpro XT varnish being more effective.
키워드
dentinal fluid flow; dentinal tubule occlusion; real-time measurement; RMGI varnish; SEM
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