The use of pins in restorative dentistry. 3. The use of paralleling instruments

A simplified intraoral surveying device

This article describes an easily made and used intraoral surveying device that can aid the dentist in transferring needed preparation information from the diagnostic cast. This device also allows checking of the preparations as they are progressing. The device consists of a Proxabrush handle and a drafting lead.

An intraoral surveyor

A device is described for checking tooth preparations of abutment teeth for fixed or removable partial dentures. The device quickly and accurately indicates the planned path of insertion of the prosthesis intraorally, serves as a visual guide during the preparation of teeth, and aids the dentist in evaluating tooth preparations before making a final impression. This intraoral surveyor provides an inexpensive, practical, and readily available method for producing optimal tooth preparations for fixed and removable partial dentures.