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치경부 5급 와동 수복의 잇솔질 마모에 관한 연구

A Study on the Toothbrush-Dentifrice Abrasion of Class Ⅴ Restroations

유미경|이광원|황수진
대한턱관절교합학회 (Korean academy of stomatognathic function and occlusion)|2005.06|구강회복응용과학지 (Journal of Dental Rehabilitation and Applied Science)|제21권 제1호|pp. 69-81

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참고문헌

주제분류치의학

초록

Abstract

The objective of this study was to evaluate the toothbrush abrasion characteristics of class Ⅴ restorations. Thirty extracted human premolars, which were collected from oral surgery clinics were used. We mounted five teeth in a metal ring mold of 50 ㎜ in diameter and 15 ㎜ in height using chemically cured acrylic resin. Class Ⅴ cavities were prepared in lingual cervical root surfaces and restored using one of following restorative materials : Dentin Conditioner/Fuji Ⅱ LC (Group FL), All Bond Ⅱ/Z-250 (Group ZT), One-up Bond F/Palfigue Estelite (Group PE), F2000 Primer/Adhesive (Group FT), and Prime & Bond 2.1/Dyract AP (Group DR). They were stored under distilled water at 37℃ for seven days. The toothbrush abrasion test was conducted using a wear testing machine of pin-on disk type under a load of 1.5 N for 100,000 cycles. We have examined the bonded interfaces, the changes of surface roughness and color of abraded surfaces. From this experiment, the following results were obtained. 1. The change of surface roughness showed high degree: RMGIC>compomer>composite resin (p<0.05). 2. Because of the protrusion and missing of filler particles, SEM observation of abraded surfaces of RMGIC and compomers revealed the increase of surface roughness due to the selective removal of matrix resin. 3. The color change by toothbrush abrasion was affected in large part by the change of L* and b* of resin composites (p<0.05).. 4. The color change by toothbrush abrasion was so small to detect by human eyes. 5. SEM observation of abraded surfaces revealed the interface bonding was the best in the FT group.

참고문헌 (29)

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