Biomedical subjects

F Graux

Publications and source records attributed to F Graux.

9 recordsLinked to original sources

PubMed1991

Centric relation and programming semiadjustable articulators with the universal jig. Part II: Experiments.

The "universal jig" described in a previous article was tested on 10 patients to check for reliability. The recording of centric relation by this method was compared with Lucia's method of recording centric relation. The results of three series of three recordings were analyzed. The influence of the universal jig on rear-determinant movement was measured by two pantographic recordings, one enabling occlusion to take place, the other using the universal jig. The results were analyzed and demonstrated that the universal jig is a reliable means of simplifying the setting up of models and the programming of semiadjustable articulators.

Centric Relation↗

PubMed1989

[A proposed prototype for recording and analysis of mandibular movement: the Cinétic].

The investigation of means of recording mandibular movement has aroused the interest of a considerable number of researchers. Their own devices, increasingly ingenious, all display certain advantages and shortcomings. The need for a device more appropriate to the needs of day-to-day odontological use has been felt for some time. By giving a broad explanation of how it works, we have tried to assess the possibilities of the proposed prototype, the Cinetic. It measures movement of the dentalium in all three dimensions simultaneously. Since its reliability, when tested by a study concerning a sample of 40 patients, proved entirely satisfactory, a more sophisticated version was promptly devised. This latest Cinetic allows the ROZENCWEIG dyskinesia index, to be calculated, the FARRAR diagram to be drawn, and the mastication movements to be analysed by giving a visual display of the mandibular opening and closing trajectories, the speed diagram, the duration of the cycle, mandibular velocity and acceleration, and a breakdown of the cycles for each respective side. In order to be fully competitive, the Cinetic lacks the capacity to record and analyse condylar movement. Work on incorporating these features is currently at an experimental stage.

Dental Equipment↗

PubMed1987

Effect of clutch surface changes on the computerized pantographic reproducibility index and the Fischer angle.

This study of eight patients compared the pantographic numeric data obtained with a concave clutch with those obtained with a flat clutch. The slight alterations that resulted were insignificant and varied with each patient. The only difference between Depoorter's study and this one is the manual calculation of the EPRI compared with the computerized calculation of CPRI. Small variation was found in the value of the Fischer angle when the studies were compared. As shown in Depoorter's work, the shape of the clutch does not produce any significant changes in the recording of the posterior determinants. This conclusion is confirmed by this study for both the CPRI and the value of the Fischer angle. The concave clutch and the flat clutch reproduced similar results in both studies. By altering the central bearing pin and obtaining the same interclutch distance for both clutches, we obtained results in this study that refute the findings of Scortecci that a concave clutch was superior to a flat clutch.

Computers↗

PubMed1987