Unverified85% confidenceDecision RuleTime unknown
指套式按摩器内径应与成人食指匹配（周长约6.5-7cm），过松易脱落存在误吞风险，过紧则操作时无法灵活按压牙龈；带底部凸缘（挡片）设计能防止滑入口腔过深
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85%
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