CRACKING THE VIVA: Important Q & A's for Conservative Dentistry

QUICK VIVA QUESTIONS

Q1. Define matrixing.
Ans. 'Matrixing’ is the procedure by which a temporary wall is created opposite to axial walls and surrounding areas of the tooth structure that were lost during the preparation.

Q2. Define matrix.
Ans. ‘Matrix’ is a device used to contour a restoration by providing a temporary wall to simulate that of a tooth structure, which it is replacing.

Q3. What are the functions of matrix?

Ans. Matrix is used to confine restorative material while it is hardening, to establish optimal contacts and contours to prevent gingival overhangs of the restoration. It also provides an acceptable surface texture for the restoration and displaces gingiva away from the cavity margins during restoration.