The evaluation of the relative parallelism of two or more abutment preparations for fixed partial dentures with the help of a mouth or photographic mirror may encounter the errors. A dental periscope is a new device for examining the abutment preparations outside the mouth, which is otherwise difficult to judge intraorally. With the help of this device, the evaluation of relative parallelism of tooth or implant abutment preparations for fixed partial dentures will become more convenient. Axial preparations for individual inlay, onlay or crown also can be evaluated easily with this device.
[Show abstract][Hide abstract] ABSTRACT: This article describes a simple technique of useful modification of measuring compass, procured from a school compass box, to make an intraoral paralleling device. This device is useful in examining parallelism of tooth or implant abutment preparations for a common path of placement in fixed dental prostheses. It can be used to examine the parallelism of guiding planes in removable partial denture patients as well.
Indian journal of dental research: official publication of Indian Society for Dental Research 01/2010; 21(3):452-3. DOI:10.4103/0970-9290.70794
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