智齿

智齿是一种特殊的牙齿，出现在青春期后期或成年期。它位于顶部一排牙齿上，位于下颌底部附近。有些人可能在年轻时长出智齿，然后立即脱落。但如果牙齿长期不脱落，那么

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Dr. William Whitbourne

Dr. William Whitbourne