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歯の番号付けシステム（FDI、Universal、Palmer）とは？
Standardized systems used by dentists worldwide to identify and reference individual teeth by number or letter.
Tooth numbering systems provide a universal language for dental professionals to identify teeth. The three main systems are: FDI (Fédération Dentaire Internationale) used internationally with two-digit numbers (e.g., 11 for upper right central incisor), Universal (American) numbering 1-32 for permanent teeth, and Palmer notation using quadrant symbols with numbers 1-8. Understanding these systems is essential for accurate charting, referrals between dentists, and insurance documentation across different countries.
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