Unverified85% confidenceDecision RuleTime unknown
牙缝紧密者（相邻牙齿咬合紧）应选UHMWPE（超高分子量聚乙烯）单丝牙线，直径0.15-0.2mm且抗拉强度高不易断丝，普通尼龙多股线易在紧牙缝卡断留残
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85%
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Long-term
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Unverified牙缝紧密（正畸后或天然牙列拥挤）应选用UHMWPE超高分子量聚乙烯线材，其单丝直径可细至0.1mm且抗拉强度是普通尼龙线的3倍以上，普通尼龙线在紧牙缝中易断裂卡顿96% similarUnverified牙缝紧密（正畸后或天生牙齿排列拥挤）建议选UHMWPE超高分子聚乙烯线材，线径≤0.15mm且抗拉强度更高，普通尼龙线在紧牙缝易起毛断裂卡在缝里96% similarUnverified牙齿排列紧密或牙缝小的人应选UHMWPE超高分子量聚乙烯线材（也称防断裂PTFE线），线径细至0.1mm级且抗拉断力更强，普通尼龙线在紧牙缝易起毛断裂卡缝95% similarUnverified产品定位为牙缝紧密人群的专用牙线棒，采用超高分子量聚乙烯(UHMWPE)细线，主打不易断裂和易入窄缝89% similarUnverified牙线棒的线材以UHMWPE（超高分子量聚乙烯）纤维强度最高，抗拉断裂力可达PTFE膨体线的2倍以上，牙缝紧、有牙套或补牙者应优先选UHMWPE线材以避免卡断残留88% similar
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