Page 45 - My FlipBook
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Fiu. M.
Fig. 12. A surface of a tooth divided into thirds.
Fig. 13. A surface of a tooth divided into thirds occluso-gingivally and into fourths bucco-
lingually.
Fig. 14. A surface of a tooth divided into fifths bucco-lingually and into fourths occluso-
gingivally. A cavity in this surface occupies the middle three-fifths bucco-ling^ually of the second
fourth occluso-gingivally.
