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Complete denture displacement following open‐mouth reline
Author(s) -
Utz K.H.,
Schneider D.,
Feyen J.,
Grüner M.,
Bayer S.,
Fimmers R.,
Müller F.
Publication year - 2012
Publication title -
journal of oral rehabilitation
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.991
H-Index - 93
eISSN - 1365-2842
pISSN - 0305-182X
DOI - 10.1111/j.1365-2842.2012.02339.x
Subject(s) - dentures , displacement (psychology) , dentistry , orthodontics , condyle , medicine , centric relation , occlusion , surgery , psychology , psychotherapist
Summary In 21 complete denture wearers, six upper and 15 lower denture relines were performed with the open‐mouth technique. The centric relation ( CR ) was recorded with the C entral‐ B earing‐ P oint ( CBP ) method three times before and three times after the reline. For each registration, the right and left condylar position was recorded in three dimensions using a custom‐made measuring device. The average denture displacement from an initial reference position ( CR ) was calculated for each registration. An upper denture reline leads to a mean displacement of 2·5 mm, both in the right and left condylar area. With an average of 2·0 mm, this displacement was smaller following a lower denture reline (right and left mean, 1·6 mm). The precision of the CBP ‐registrations proved 0·5 mm before and 0·3 mm after reline; hence, the measured condylar displacement after reline could not attribute to a methodological bias. This clinical‐experimental study demonstrates that relining complete dentures with the open‐mouth technique may lead to a substantial denture shift and thus imply inevitably clinically relevant occlusal discrepancies. It is therefore important to carefully check the occlusion at denture delivery and remount the prostheses if necessary.