Clinical ResearchComparative evaluation of sagittal inclination of the occlusal plane with Frankfort horizontal plane in facebow transfers to semiadjustable and fully adjustable articulators
Section snippets
Material and methods
For the present study, 30 dentulous participants, 18 to 30 years of age, of either sex, were enrolled. Ethics approval was obtained from the Research Ethics Committee of the Sinhgad Dental College and Hospital (Pune, India). The participants voluntarily agreed to participate in the study after the proposed research had been explained to them on an informational/consent sheet.
The study was performed in 2 parts. In the first part, 2 sets of irreversible hydrocolloid impressions (Zelgan 2002;
Results
The mean and standard deviation measures of SIOP (in degrees) recorded using the Hanau Wide-Vue, Denar D5A articulators, and lateral cephalogram are presented in Table 1. In the Hanau group, SIOP varied from a minimum of 4.5 degrees to a maximum of 15.9 degrees (mean 10.0 degrees). In the Denar group, SIOP varied from a minimum of 2.7 degrees to a maximum of 16.4 degrees (mean 9.2 degrees). The Hanau Wide-Vue articulator most closely resembled the cephalometric OP and positioned the OP almost
Discussion
When the Hanau Wide-Vue and the Denar D5A articulators were compared with lateral cephalograms, there was a statistical difference in the values; therefore, the null hypothesis was rejected. Variation in the OP orientation was observed in both articulators; however, the Hanau Wide-Vue articulator most accurately replicated the inclination of the OP.
In this study, the inclination of the maxillary OP was measured with a digital protractor on the articulator. The minimum SIOP measured on the Hanau
Conclusions
Based on the findings of this clinical study, the following conclusions were drawn:
- 1.
The Denar D5A articulator provided a significantly flatter OP than that recorded using either a lateral cephalogram or the Hanau Wide-Vue articulator.
- 2.
The sagittal inclination of the OP obtained using the Hanau Wide-Vue more closely approximated the sagittal inclination of the OP found on the lateral cephalogram.
- 3.
Regarding the sagittal inclination of the OP, a semiadjustable articulator (Hanau Wide-Vue) can provide
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