Unverified75% confidenceTradeoffTime unknown
牙签直径越细剔牙越贴合牙缝但越易折断，越粗越结实但可能撑大牙缝损伤牙龈乳头；日常剔牙选2mm左右，牙缝较宽者可选2.5mm或改用牙线
1
Sources
75%
Confidence
Long-term
Relevance
-
First Seen
Sources
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Unverified牙缝明显增宽（牙周炎、乳头萎缩）者单用牙线清洁效率低，应改用牙缝刷（0.6-1.5mm规格按牙缝选），牙线仅作补充89% similarUnverified线径细（约0.15mm以下）的牙线棒更易滑入紧密牙缝，但清洁牙面接触面小；线径粗或膨胀型（遇水膨胀）清洁效率高但牙缝紧者会卡住难拉出87% similarUnverified如果你有牙周病导致的牙龈退缩、牙缝变大，或佩戴牙桥/种植体需要清洁较宽间隙，优先考虑这类膨胀型牙线而非普通牙线87% similarUnverified牙缝宽度不足0.4mm或牙齿排列极其紧密者不建议强行使用牙间刷，应改用牙线，强行插入会损伤牙龈乳头造成牙缝变大87% similarUnverified尺寸偏大强行插入牙缝会导致牙龈退缩、牙缝越用越大，宁可选偏小尺寸多刷几下也不选紧塞的大号87% similar
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