Unverified85% confidenceDecision RuleTime unknown
7M+溶豆/入口即化型软条硬度极低、遇唾液3-5秒软化，适合刚长牙前后；10M+/12M+的手指条硬度更高需要牙床磨咬，起锻炼咀嚼作用，两者不可提前跨阶段给
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Unverified伸缩式便携牙刷收纳后长度约10-11cm、展开后约17-18cm，接近标准牙刷握感；纯折叠款展开握持较短，长期用手感偏差80% similarUnverified6个月以上臼齿萌出期需选带凸点/棱纹的硬质牙胶（邵氏硬度40度以上）按摩后牙床，单一软质牙胶已无法满足深度磨牙需求79% similarUnverified7-12个月长牙中后期可选带凸点纹理、稍硬（Shore A 40-60）的牙胶，凸点能按摩多颗待出乳牙的牙龈78% similarUnverified正畸初期（戴牙套/加力后1-2周）应使用低档水压（约30-40psi或档位调至最低1-2档），避免高压冲击刚受力的牙齿和托槽导致不适或托槽脱落78% 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77% similar
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