Accuracy of Various Virtual Articulator Mounting Procedures: An in Vivo Study

Study Overview
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Brief Summary
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the aim of this study was to evaluate the accuracy of the various virtual articulator mounting procedures.

Detailed Description
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The purpose of the present study was to evaluate the accuracy of various virtual articulator mounting procedures. For this purpose, 7 kinds of virtual mounting procedures were investigated:(1) indirect virtual mounting in MS VA by using an average facebow; (2) virtual mounting in MS VA by using average values; (3) virtual mounting in MS VA by using professional facial scanner; (4) virtual mounting in MS VA by using smartphone facial scanner; (5) virtual mounting in MS VA by using CBCT located in Bergstrom's point; (6) virtual mounting in MS VA by using CBCT located in the medial poles of the condyles; (7) virtual mounting in CA VA by using JMA，as the group to compare with the other mounting procedures. The null hypothesis is that no difference would be found in the static measurements taken virtually when comparing these 7 procedures for virtual mounting.

Official Title
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Comparison of the Precision of the Virtual Articulators Using Various Virtual Articulator Mounting Procedures

Conditions
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Occlusion

Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: 1.without any symptoms and signs of the temporomandibular joint 2.Willing to participate and to sign a written informed consent form 3.in good health and had no past history of any serious illness Exclusion Criteria: emporomandibular or craniocervical disorders

Ages Eligible for Study
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Minimum Age: 20 Years
Maximum Age: 30 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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Accepts Healthy Volunteers

Study Plan
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How is the study designed?
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Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| virtual articulator mounting using an average facebow<br>indirect virtual mounting in MS VA by using an average facebow | |
| virtual articulator mounting by using average values<br>virtual mounting in MS VA by using average values; | |
| virtual articulator mounting by using professional facial scanner<br>virtual mounting in MS VA by using professional facial scanner | |
| virtual articulator mounting by using smartphone facial scanner<br>virtual mounting in MS VA by using smartphone facial scanner | |
| virtual articulator mounting by using CBCT located in Bergstrom's point<br>virtual mounting in MS VA by using CBCT located in Bergstrom's point | |
| virtual articulator mounting by using CBCT located in the medial poles of the condyle<br>virtual mounting in MS VA by using CBCT located in the medial poles of the condyle | |
| virtual articulator mounting by using JMA<br>virtual mounting in CA VA by using JMA,as the group to compare with the other mounting procedures. | |

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| the accuracy of different virtual articulator mounting procedures | the virtual articulator mounting by using JMA is considered as the the gold standard, which can calculate the hinge axis of the temporomandibular joint, compare the hinge axis of the temporomandibular joint of different virtual articulator mounting procedures. | immediately | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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virtual articulator ,occlusion