3. Matrices Utilized for Restoration of Class II (Ruble)

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4 Terms

1
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Proximal contact areas on posterior teeth

  • Occlusal view: contacts are placed more buccally and there are larger lingual embrasures

  • Buccal view: contacts are placed in the middle 3rd or near junction of middle and occlusal 3rd EXCEPT mesial of mandibular 1st premolar, which is in the occlusal 3rd

2
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Tofflemire is what type of matrix? What are its components?

  • CIRCUMFERENTIAL

  • Retainer, band and wood wedge

3
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What are the shapes and functions of the wedge?

  • triangular or round

  • Functions: Seal the gingival cavosurface to prevent excess and separates teeth to create contact

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  • The opening of the U on the head of the tofflemire retainer always faces the ______

  • The retainer is always placed on the ______ side of the tooth

  • You must ALWAYS use a _____ to seal the gingival margin

  • The opening of the U on the head of the tofflemire retainer always faces the gingiva

  • The retainer is always pl

    aced on the buccal side of the tooth

  • You must ALWAYS use a _____ to seal the gingival margin