Unverified90% confidenceDecision RuleTime unknown
牙缝紧密（正畸后或天生牙齿排列紧）应选含蜡牙线或超细PTFE牙线（线径≤0.05mm级别），无蜡棉线在紧牙缝中易起毛卡断
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90%
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Long-term
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Unverified牙缝紧密者（正常/挤压式牙缝）应选含蜡牙线或PTFE线材，直径0.05mm以下更易滑入，无蜡线在紧牙缝易起毛断裂92% similarUnverified牙缝紧密（正畸后或天生牙列拥挤）应选含蜡或PTFE材质牙线，直径≤0.4mm，无蜡尼龙线易在紧牙缝卡断残留纤维91% similarUnverified牙缝紧密（正畸后或天生牙缝小）优先选含蜡PTFE材质牙线，摩擦系数低易滑入，普通尼龙线在紧牙缝易断丝卡牙缝90% similarUnverified乳牙牙缝普遍较紧密，应选择线径0.10-0.15mm的超细扁线（PTFE/特氟龙材质），普通成人牙线较粗易卡在乳牙间难以拉出89% similarUnverified牙缝紧密（正常/拥挤牙列）应选PTFE（特氟龙/膨体）材质超细牙线，直径≤0.5mm且截面扁平，尼龙线易卡断残留；牙缝较大或有牙周袋人群应选膨胀型（Expanding）牙线或牙线+牙缝刷组合89% similar
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