Unverified75% confidenceTradeoffTime unknown
带涂层（如PTFE特氟龙涂层）牙线顺滑易过窄缝但可能残留纤维，膨胀型（PTFE扩展）牙线清洁面积大更适合正常牙缝，出血牙龈期优选顺滑涂层减少刺激
1
Sources
75%
Confidence
Long-term
Relevance
-
First Seen
Sources
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Unverified牙缝较大或有牙龈退缩者应选膨体尼龙线（PTFE膨体/海绵型），入缝后横向膨胀能有效刮除较宽牙缝的软垢；用超细单丝线反而清洁效率低92% similarUnverified牙缝正常或偏窄者选PTFE（特氟龙）膨体线，不易起毛断裂；牙缝较大者选膨胀式尼龙线（如含蜡海绵线），进缝后膨胀更贴合清洁面91% similarUnverified牙缝较宽或有牙龈退缩者应选膨胀型（PTFE/海绵线）或扁平宽面牙线，接触面积大清洁效率高；用细单丝线反而清洁面积不足90% similarUnverifiedPTFE（特氟龙）材质牙线比传统尼龙线更顺滑、不易断丝，适合牙缝紧密者；尼龙多股线在牙缝较宽时清洁面积更大、性价比更高90% similarUnverified牙缝较小或牙齿排列紧密（正畸后/天生密集）应选PTFE（特氟龙）单丝线材，直径0.05mm以下且不易毛刺卡断；避免蜡质尼龙膨体线，后者遇窄缝易卡顿断丝88% similar
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