A lingual approach for a conservative Class III preparation for a composite resin requires

1 explanations

1. 

   oneguy

   Idea conservative Class III composite resin cavity preparation: (1) Gingival margin: 1mm above gingival, incisal margin: just below proximal contact (maintenance of the incisal contact area), facial margin: parallel to facial surface, at junction of facial and middle 1/3 (2) Incisal and gingival walls parallel to each other with ideal depth of 1-1.25mm (incisal wall: 1.25mm, gingival wall: 1.0mm) (3) Internal line angle: Round with approximately 90 degree

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