RPD LAB CHAPTER 9 SURVEYING

Path of insertion

Is the path along whcih a prosthesis is placed (or removed) intraorally

-Single path of insertion

-Remvoal from the mouth

A removalbe partial denture is usaullu fabricated to have?

GUiding planes

THese axial surfaces msut be prepared so that they are parallel the path of insertion, these are called

-Proximal plates

-Bracing arms

-Rigid portions of retenvie clasps

Guiding planes should usually be prepared for?

Dr. A. J. Fortunati

Who introduced dental surveyor in the clinic

Dental surveyor

This instrument is used to determine the parallelism of surfaces.

J. M. Ney corporation (1923)

Who introduced the first commecrically avaialbel surveyor

1. Locating soft tissue udnercuts

2. Contouring wax patterns

3.Machining parallel surfaces

4. BLocking out undesirable undercuts

5. Placing intracoroal retainers

6. Recording the cast position (to selected path of insertion)

Other uses of a surveyor

Analyzing rod

thIS SURVEYING TOOL IS USED TO DETERMINE RELATIVE PARALLELISM OF SURFACES ON DENTAL CAST

Carbon marker

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This surverying tool is used to mark the height of the contour on one or more surfaces of a dental cast

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Undercut gauges

THis surverying tool is used to identify the positions of desired udnercuts on dental cast

Wax knife

THis surverying tool is used during blockout procedures and in the cosntruction of surveryed restorations