IBMS

SURVEY LENCE

Survey lines are marked on a cast by first orienting the cast in the cast holder at the tilt indicating the path of placement for the denture and then sliding the cast holder along the surveyor table so that the cast surface is lightly rubbed against a carbon marker held in the chuck in the spindle of the surveyor . Survey lines are marked on non-polished metal and non-glazed porcelain crown surfaces with a carbon marker in a similar fashion. Survey lines are marked on wax patterns for crowns by dusting the surface with zinc stearate or powdered white wax, then sliding the cast holder on the surveyor table so that the surface of the wax pattern is lightly rubbed against an analyzing rod held in the chuck in the spindle of the surveyor. Survey lines are marked on polished metal and glazed porcelain crown surfaces in a similar manner substituting a layer of disclosing medium (i.e. Occlude, Die Mark, etc.) on the surface of the crown.

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