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酸蚀刻术是粘接树脂到釉质的有效方法。树脂修复的早期洞型预备是模仿银汞合金洞型,在洞面线角形成90°对接。洞面角斜面是一种改进洞型。本研究旨在检查Ⅱ类洞颈缘斜面酸蚀后对釉面形态的影响。将拔除的前磨牙和磨牙各5颗,剥去牙龈组织和附着斑,贮于10%中性福尔马林中,高速牙钻在牙之一面作颊舌宽约3mm,深约1.5～2mm的盒状洞,以手用器械在釉牙骨质界上方约1mm处完成洞的颈缘。颈
Acid etching is an effective method of bonding the resin to the enamel. The early hole repair resin preparation is to imitate the amalgam cavity type, forming a 90 ° butt line angle in the hole. Cave angle bevel is an improved hole type. The purpose of this study was to examine the influence of glazed surface morphology on the bevel edge of a type II tunnel edge. The extracted premolar and molars each 5, stripped gum tissue and attachment spots, stored in 10% neutral formalin, high-speed dental drill in one side of the tooth for buccal width of about 3mm, a depth of about 1.5 ~ 2mm box Shaped hole, with hand instruments in the enamel cementum about 1mm above the completion of the neck edge of the hole. neck