maloclussion
Conditions
Interventions
The plaster model was mounted on an Artex semi-adjustable occlusor using a traditional face bow record. This installation is then digitized using a benchtop scanner, which is imported into the exoCAD
Geomagic software was used to fit the patient s 3D face scan and mouth scan images to determine the jaw position relationship, and then the hinge axis and plane landmarks were determined on the soft t
CBCT scans were performed, field of view (FOV) including maxilla, infraorbital point and external ear canal, data were exported to a Medical Digital Imaging and Communication (DICOM) file, and relevan
Sponsors
School of Stomatology , The Fourth Military Medical University,145 Changle West Road, Xincheng District, Xi 'an
Eligibility
Sex/Gender
All
Age
18 Years to 30 Years
Inclusion criteria
Inclusion criteria: 1. The proportion of men and women aged 18-30 is 1:1 2. Complete maxillary and mandibular dentition, no missing teeth (except the third molar) 3. Class I, no obvious bone protrusion, retraction or asymmetrical deformity, posterior tooth fossa staggered, molar basically neutral relationship, basically arranged neatly, covering? Normal coverage 4.There is no obvious surface wear, no large area of destruction of tooth tip filling body, no crown, inlay and other restorations 5, no temporomandibular joint disease, no obvious occlusion interference, receding contact position (RCP) is coordinated with apical interlacing position (ICP), muscle position is consistent with tooth position
Exclusion criteria
Exclusion criteria: 1. Patients younger than 18 years or older than 30 years 2. Patients with systemic diseases or malignant tumors 3. Patients with mental illness or who are unable to express their subjective opinions normally; 4. Patients with denture defect or absence and/or serious periodontal disease; 5. Patients with a history of orthognathic or plastic surgery; 6. Patients with poor compliance; 7. No follow-up and missing cases; 8. Poor oral hygiene 9. Pregnant women
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| The distance between the center of the left and right condyle and the contact point of the mandibular central incisor and the mesial buccal tip of the mandibular first molar was measured after the transfer to the virtual occlusal frame ;The distance between the center of the left and right condyle and the contact point of the mandibular central incisor and the mesial buccal tip of the mandibular first molar were measured on CBCT ;Measuring transferred to virtual tooth in patients after opening 0, 3, 5 mm bite because of the increase in vertical dimension before and after the change ;The anterior-posterior changes on the oral scan due to the increase in vertical size were measured when the patient opened the 3, 5mm bite ; | — |
Countries
China
Contacts
Public ContactMeng Cao
School of Stomatology , The Fourth Military Medical University
Outcome results
None listed