[The effect of the interocclusal space on temporomandibular recordings. A study with the use of the Stereognathograph PC].

1536 recordings of the condylar movement of 32 patients were made by means of the Stereognathograph PC. The test persons performed mediotrusive and protrusive movements. These movements were recorded with tooth contact and with increased interocclusal space, with and without the clinician's supportive guidance. The objective of the study was to analyse the effects of increased interocclusal space on the recording of the condylar path. Statistical evaluation showed that neither procedure has any real advantage over the other. Both, the occlusal tray as well as the paraocclusal tray may, depending on clinical situation of the ligaments, lead to erroneous recordings. The reproducibility of the recording of the condylar path is only slightly decreased by increased interocclusal space. Considering, however, the amount of work involved in each procedure, the occlusally fixated tray should probably be given preference, when there is no intention of recording occlusal guided movements.