PubMed · 8166084
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R R Aubrey. 1994. Centric relation controversy.. https://doi.org/10.1016/s0889-5406(06)80025-9
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Restoration of the edentulous maxilla with implant retained and supported prosthesis is challenging because of inherent anatomic limitations present after the loss of teeth. A fixed-removable prosthesis is one treatment choice for restoration of the edentulous maxilla with implants. This prosthesis meets the requirements for esthetics, phonetics, comfort, and hygiene, as well as favorable biomechanical stress distribution to the implants. This article presents a procedure for fabrication of a fixed-removable prosthesis with a precision milled bar, Hader clip attachments, and a superstructure prosthesis. The criteria for patient selection and the advantages and disadvantages of this prosthesis are discussed.
STATEMENT OF PROBLEM: Centric relation has often been mentioned as a repeatable condylar position. PURPOSE OF STUDY: This study was designed to determine whether a standardized method of achieving centric relation would be repeatable within the 0.11 mm tolerance of the Denar Centri-Check instrument. MATERIAL AND METHODS: A control group of 132 dentists and an experimental group of 11 dentists all made interocclusal records on the members of the experimental group. The control group used its "own best method" for achieving centric relation and the experimental group received standardized instruction and used a standardized technique of bimanual manipulation to achieve centric relation. RESULTS: The control group did not repeat condylar position within the 0.11 mm tolerance of the Denar Centri-Check instrument, whereas the experimental group did repeat condylar position within the 0.11 mm tolerance of the Denar Centri-Check instrument in 106 of 110 first attempts and in 4 of 4 second attempts. CONCLUSION: Given the extreme variations in recording centric relation, a stronger emphasis should be placed on this important skill in both undergraduate and postgraduate education.
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