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Randomized Controlled Trial
. 2021 Oct-Dec;21(4):397-404.
doi: 10.4103/jips.jips_239_21.

Comparative evaluation of condylar guidance obtained by three different interocclusal recording materials in a semi-adjustable articulator and digital panoramic radiographic images in dentate patients: An in vivo study

S R Keerthana  1 , H S Mohammed  1 , A Hariprasad  1 , M Anand  1 , Syeda Ayesha  1
Affiliations
Randomized Controlled Trial

Comparative evaluation of condylar guidance obtained by three different interocclusal recording materials in a semi-adjustable articulator and digital panoramic radiographic images in dentate patients: An in vivo study

S R Keerthana et al. J Indian Prosthodont Soc. 2021 Oct-Dec.

Abstract

Aim: The Aim of the study was to evaluate the reproducibility of condylar inclination values obtained using three different interocclusal recording materials in Hanau Wide-Vue semi-adjustable articulator and to compare those values of condylar inclination with panoramic radiographic images.

Settings and design: In Vivo Comparative study.

Materials and methods: The clinical trial was carried out in the Department of Prosthodontics, M. R Ambedkar Dental College and Hospital, Bengaluru. A total of 30 dentulous subjects aged between 20 and 40 years were selected, without any signs and symptoms of temporomandibular joint disorders. With the help of a custom-made protrusive guide, protrusive records for three materials were made. These records were used for programming the articulator and the respective horizontal condylar inclination (HCI) value, and panoramic radiographs were made. The values obtained were statistically analyzed.

Statistical analysis used: Independent t-test, multiple comparisons using Bonferroni method followed by Analysis of variances (ANOVA) were used.

Results: Among each pair of groups there exists a significant difference, i.e., the mean condylar inclination (degree) was found to be statistically significant between wax and polyvinyl siloxane (P < 0.01) as well as between wax and polyether (P < 0.01). No significant difference was observed between polyvinyl siloxane and polyether (P > 0.05).

Conclusion: HCI values differed depending on the type of material employed. The study concluded that the protrusive condylar guidance angles obtained by panoramic radiograph can be used in programming the semi-adjustable articulator and among the materials polyether gave the highest Condylar Guidance values with less variability and wax gave lowest values with greater variation.

Keywords: Condylar guidance; interocclusal records; panoramic radiograph; semi-adjustable articulator.

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Conflict of interest statement

None

Figures

Figure 1
Figure 1
Panoramic radiographic image, (a) right side with overlapped tracing of condylar guidance angle, (b) left side with overlapped tracing of condylar guidance angle
Figure 2
Figure 2
Tracing obtained on the transparent sheet, (a) Right side tracing, (b) Left side
Figure 3
Figure 3
Hanau springbow used for facebow recording (orbitale is used as the third reference point), (a) frontal view, (b) lateral view
Figure 4
Figure 4
Facebow transfer done to orient maxillary cast in Hanau articulator
Figure 5
Figure 5
Protrusive jig, (a) frontal view, (b) jig with impression compound in the incisal edge (indentation on compound help in repeatedly placing teeth in the same position)
Figure 6
Figure 6
(a) Interocclusal bite registered with Aluwax in protrusive, (b) interocclusal bite registered with polyvinyl siloxane in protrusive, (c) interocclusal bite registered with polyether in protrusive
Graph 1
Graph 1
Histogram Showing Comparision Between Wax, Polyvinyl Siloxane, Polyether
Graph 2
Graph 2
Histogram showing comparision between condylar guidance angle obtained by WAX and orthopantomograph
Graph 3
Graph 3
Histogram showing comparision between condylar guidance angle obtained by poly vinyl siloxane and orthopantomograph
Graph 4
Graph 4
Histogram showing comparision between condylar guidance angle obtained by polyether and orthopantomograph
Graph 5
Graph 5
Histogram showing comparision between condylar guidance angle obtained by polyether and orthopantomograph
See this image and copyright information in PMC

References

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