Unverified80% confidenceTradeoffTime unknown
固定牢固度与舒适度存在权衡：夹齿越密、弹簧越强抓发越牢但夹取时越易扯痛头皮，日常活动量大的儿童建议中等夹力+多点固定，静态场合可选轻夹力
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80%
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Long-term
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