지각과민처치제가 초음파 스케일링 처리한 비우식성 치경부 병소가 있는 치아의 지각과민증에 주는 영향
Effect of Dentin Desensitizer on the Hypersensitivity of Teeth with Non-carious Cervical Lesions Subsequent to Ultrasonic Scaling
조재형, 석수황, 이상혁, 임범순,
소속 상세정보
조재형 ( Cho Jae-Hyung ) - 서울대학교 치의학대학원 치과생체재료과학교실
석수황 ( Seok Soo-Hwang ) - 서울대학교 치의학대학원 치과생체재료과학교실
이상혁 ( Lee Sang-Hyeok ) - 서울대학교 치의학대학원 치과생체재료과학교실
임범순 ( Lim Bum-Soon ) - 서울대학교 치의학전문대학원 치과생체재료과학교실
KMID : 1035320160430010017
Abstract
The aim of this study was to evaluate the changes in dentinal permeability after application of dentin desensitizer on exposed dentin immediately after ultrasonic scaling to teeth with non-carious cervical lesions. Thirty caries-free extracted molars were fixed to slide glasses after horizontally being sectioned at 5 mm below the cemento- enamel junction (CEJ). The prepared specimen was connected to a fluid flow measuring device (nano-Flow), and a V-shaped cavity was formed at the CEJ to imitate the non-carious cervical lesion. After no fluid leakage was confirmed in the connected system with specimen, tooth surface was treated ultrasonic cleaning with piezoelectric ultrasonic scalers until dentinal tubules were exposed. And 6 different desensitizers were applied on exposed dentin. Real-time measurements of dentinal fluid flow were performed during ultrasonic scaling and application of dentin desensitizer. To evaluate the occlusion of exposed dentinal tubules, tooth surface was examined by SEM. Following results were observed. After ultrasonic scaling, more dentinal tubules were exposed on the tooth with non-carious cervical lesions compared to tooth without lesions. The rate of fluid flow measured with nano-Flow system had correlation with the degree of dentin occlusion observed with SEM after application of desensitizers on exposed dentin. Desensitizers with glutaraldehyde and HEMA did not decrease the rate of fluid flow and did not show dentin occlusion. Desensitizers with oxalate showed the limited effects on the rate of fluid flow and dentinal tubule occlusion. Desensitizer with resin monomer showed the significant effect on the rate of fluid flow and dentin occlusion.
키워드
Desensitizing Agent; Non-carious Cervical Lesions; Ultrasonic Scaling; Dentin; Real-time Measurement of Dentinal Fluid Flow
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