MDS AIPGDEE preparations B-IDS | The prepared lingual wall for an anterior metal ceramic restoration is parallel to?

The prepared lingual wall for an anterior metal ceramic restoration is parallel to?
a. Cervical half of facial surface
b. opposing tooth
c. no relation
d. incisal third of facial surface

Ans A Cervical half of facial surface 

In this portion porcelain veneering is not given.

- Tarpedo diamond is used to reduce the lingual axial surface and it simultaneously forms the chamfer finish line

-If the lingual axial wall is short, it can be lengthened by using the shoulder with the bevel to move the lingual wall

further towards the centre of the tooth.

-lingual axial wall should be parallel with the cervical 1/3 of the facial surface.