Alteration of the Occlusal Vertical Dimension for Prosthetic Restoration Using a Target Tracking System
Clinicians and researchers have used various methods to reproduce the maxillomandibular relationship and mandibular movement of individual patients using an articulator, with efforts being made to reduce errors associated with the conventional technique. When a change to a vertical dimension is requ...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2021-07-01
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| Series: | Applied Sciences |
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| Online Access: | https://www.mdpi.com/2076-3417/11/13/6196 |
| _version_ | 1797528097830993920 |
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| author | Hwa-Jung Lee June-Sung Shim Hong-Seok Moon Jong-Eun Kim |
| author_facet | Hwa-Jung Lee June-Sung Shim Hong-Seok Moon Jong-Eun Kim |
| author_sort | Hwa-Jung Lee |
| collection | DOAJ |
| description | Clinicians and researchers have used various methods to reproduce the maxillomandibular relationship and mandibular movement of individual patients using an articulator, with efforts being made to reduce errors associated with the conventional technique. When a change to a vertical dimension is required during the conventional prosthesis construction process, the maxillary and mandibular casts are mounted on the mechanical articulator using a facebow and bite registration and the elevation of the anterior guide pin of the articulator is used. However, this can inevitably cause errors due to differences between the articulator hinge movement and the actual trajectory of the patient. There has recently been increasing interest in tracking the trajectory of jaw motion of a patient, and this paper presents a new technique for altering the vertical dimension based on the measured trajectory. Target materials for performing tracking are attached to the maxillary and mandibular anterior teeth to record opening and closing movements of the patient’s mouth in real time and align the patient’s scanned intraoral data or cast data. The movements of the targets are replaced with the movement of the patient’s oral scan data. Additionally, then the occlusal vertical dimension is set to a new position based on the obtained trajectory. After determining the optimal vertical dimension with consideration of the space required for restoration, maxillary and mandibular STL files are exported and the designed cast is created using a 3D printer. The printed cast is mounted on an articulator for subsequent procedures. This approach maintains the patient’s actual maxillomandibular relationship at various vertical heights and can also reduce the chair time required when adjusting for errors. |
| first_indexed | 2024-03-10T09:53:16Z |
| format | Article |
| id | doaj.art-e0088c4e0def4c48af8986131d738067 |
| institution | Directory Open Access Journal |
| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-03-10T09:53:16Z |
| publishDate | 2021-07-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Applied Sciences |
| spelling | doaj.art-e0088c4e0def4c48af8986131d7380672023-11-22T02:35:03ZengMDPI AGApplied Sciences2076-34172021-07-011113619610.3390/app11136196Alteration of the Occlusal Vertical Dimension for Prosthetic Restoration Using a Target Tracking SystemHwa-Jung Lee0June-Sung Shim1Hong-Seok Moon2Jong-Eun Kim3Department of Prosthodontics, Yonsei University College of Dentistry, Yonsei-ro 50-1, Seodaemun-gu, Seoul 03722, KoreaDepartment of Prosthodontics, Yonsei University College of Dentistry, Yonsei-ro 50-1, Seodaemun-gu, Seoul 03722, KoreaDepartment of Prosthodontics, Yonsei University College of Dentistry, Yonsei-ro 50-1, Seodaemun-gu, Seoul 03722, KoreaDepartment of Prosthodontics, Yonsei University College of Dentistry, Yonsei-ro 50-1, Seodaemun-gu, Seoul 03722, KoreaClinicians and researchers have used various methods to reproduce the maxillomandibular relationship and mandibular movement of individual patients using an articulator, with efforts being made to reduce errors associated with the conventional technique. When a change to a vertical dimension is required during the conventional prosthesis construction process, the maxillary and mandibular casts are mounted on the mechanical articulator using a facebow and bite registration and the elevation of the anterior guide pin of the articulator is used. However, this can inevitably cause errors due to differences between the articulator hinge movement and the actual trajectory of the patient. There has recently been increasing interest in tracking the trajectory of jaw motion of a patient, and this paper presents a new technique for altering the vertical dimension based on the measured trajectory. Target materials for performing tracking are attached to the maxillary and mandibular anterior teeth to record opening and closing movements of the patient’s mouth in real time and align the patient’s scanned intraoral data or cast data. The movements of the targets are replaced with the movement of the patient’s oral scan data. Additionally, then the occlusal vertical dimension is set to a new position based on the obtained trajectory. After determining the optimal vertical dimension with consideration of the space required for restoration, maxillary and mandibular STL files are exported and the designed cast is created using a 3D printer. The printed cast is mounted on an articulator for subsequent procedures. This approach maintains the patient’s actual maxillomandibular relationship at various vertical heights and can also reduce the chair time required when adjusting for errors.https://www.mdpi.com/2076-3417/11/13/6196target trackingdigital dentistryCAD-CAMocclusal vertical dimensionmaxillomandibular relationship |
| spellingShingle | Hwa-Jung Lee June-Sung Shim Hong-Seok Moon Jong-Eun Kim Alteration of the Occlusal Vertical Dimension for Prosthetic Restoration Using a Target Tracking System Applied Sciences target tracking digital dentistry CAD-CAM occlusal vertical dimension maxillomandibular relationship |
| title | Alteration of the Occlusal Vertical Dimension for Prosthetic Restoration Using a Target Tracking System |
| title_full | Alteration of the Occlusal Vertical Dimension for Prosthetic Restoration Using a Target Tracking System |
| title_fullStr | Alteration of the Occlusal Vertical Dimension for Prosthetic Restoration Using a Target Tracking System |
| title_full_unstemmed | Alteration of the Occlusal Vertical Dimension for Prosthetic Restoration Using a Target Tracking System |
| title_short | Alteration of the Occlusal Vertical Dimension for Prosthetic Restoration Using a Target Tracking System |
| title_sort | alteration of the occlusal vertical dimension for prosthetic restoration using a target tracking system |
| topic | target tracking digital dentistry CAD-CAM occlusal vertical dimension maxillomandibular relationship |
| url | https://www.mdpi.com/2076-3417/11/13/6196 |
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