Which of the following is not a modification for the class III cavity preparation to receive direct filling gold restorations?
Correct Answer: Moustache extensions
Description: Class V with unilateral or bilateral “moustache” extensions occlusally:
Sometimes surface defects occlusal to the height of contour are continuous with a gingival third lesion, necessitating their involvement in the Class V cavity preparation and their restorations. So one or two occlusal extensions are added to the basic trapezoidal Class V cavity preparation.
Category:
Dental
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