Unverified80% confidenceDecision RuleTime unknown
研磨颗粒细腻度以≤10微米（微粉级）为佳，颗粒粗糙的手工牙粉（肉眼可见颗粒感）刷牙时对牙釉质和牙龈的机械损伤明显更大
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80%
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Long-term
Relevance
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Unverified口腔喷雾清洁仪的雾化颗粒粒径应≤50微米才能有效渗入牙缝和牙龈沟，粒径＞100微米的产品清洁力接近普通漱口，效果有限83% similarUnverified牙龈易出血、萎缩或牙齿敏感者应选软毛牙刷（丝径≤0.15mm，标注soft/extra soft），中硬毛（0.2mm以上）长期使用会加剧牙龈退缩和楔状缺损82% similarUnverified假牙/义齿专用清洁泡腾片与真牙清洁片不通用：假牙片碱性和杀菌成分（如过硼酸钠）更强，直接含服或刷真牙可能损伤口腔黏膜81% similarUnverified可做到0.3mm左右超薄备牙甚至微量备牙，对天然牙体保留优于传统全瓷冠，但'不磨牙'宣传多有夸大，绝大多数病例仍需少量牙体预备以获得稳定粘接面80% similarUnverified牙龈萎缩、牙齿敏感或牙周炎人群应选磨圆率≥80%的软毛牙刷（刷毛丝径0.15-0.18mm），避免中硬毛加剧牙龈退缩和楔状缺损80% similar
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