21121 One surface
| 20000 | RESTORATION |
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| 21000 | RESTORATIONS, AMALGAM |
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| 21100 | RESTORATION, AMALGAM, PRIMARY TEETH |
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| 21120 | Rertorations, Amalgam, Bonded, Primary Teeth |
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| 21121 | One surface | $133.55 | $133.55 |