[KongchangAI]
Unverified80% confidenceTradeoffTime unknown

洞洞型(强制固定三指)矫正效果强但书写灵活性差、写快字时受限;引导凹槽型不干涉书写但矫正力弱,孩子容易滑回错误握姿。初期用洞洞型见效后过渡到凹槽型是常见路径

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