Techniques of preparation

 Tangent preparation: preparation with a run that mostly parallel, slightly tapered against the axis)

Step preparation:

Preparation with cervical step (laying on the neck of the tooth)

  • shoulder (straight and tapered forms) forms:
    1. Cylinder (836, 837, 846)
    2. Flat end taper (847, 848)
  • modified shoulder (straight and tapered forms) forms:
    1. Cylinder (836KR, 837KR)
    2. taper, modified shoulder (846KR, 847KR, 850KR)

Valley preparation:
Preparation of a tooth with cervical shaped rim.

  • beveled cylinder, straight forms (836KR, 837KR, 847KR)
  • beveled cylinder, tapered forms: (878K, 879K)
  • tapered, round forms: (855, 856, 856L, 850)