問題詳情

41.複合樹脂填補前,先將樹脂加熱再填補之相關敘述,下列何者錯誤?
(A)使用樹脂加熱器將樹脂預熱至 40°C
(B)加熱的樹脂可降低黏稠度(viscosity)
(C)加熱的樹脂可降低剛性(stiffness)
(D)某些樹脂在加熱後,可以增加樹脂在邊緣的貼附性(marginal adaption)

參考答案

答案:A
難度:困難0.288
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丹黃】評論

Commercial “composite warmers” are available (e.g., Calset, AdDent Inc., Danbury, CT) to preheat the composite resin to preset temperatures up to 68°C (155°F). he increased temperature lowers the viscosity of the composite resin, potentially resulting in better marginal adaptation and reduced microleakage, although some of these results have been shown to be composite specific.Reference: Sturdevant Art and Science of Operative Dentistry 7th ed. p.235