Comparison of the Centric Relation Recorded by Two Methods Using Cone Beam Computed Tomography
Study Details
Study Description
Brief Summary
The purpose of this study was to investigate and compare the variation in mandibular relation recorded by the gothic arch methods and the K7 method using cone beam computed tomography (CBCT)
| Condition or Disease | Intervention/Treatment | Phase |
|---|---|---|
|
N/A |
Detailed Description
ten asymptomatic participants were selected,the centric relation registrations were separately recorded according to the technique of the gothic arch method and the neuromuscular method,subsequent, they were instructed to perform CBCT wearing two bite registrations,thus using dophin software to calculate the tmj space and the upper airway and using exocad software to ananyse the mandibular position, Data were analysed with paired t-test
Study Design
Arms and Interventions
| Arm | Intervention/Treatment |
|---|---|
| Experimental: record the centric relation using the gothic tracing method the vertical dimension of occlusion (VDO) were were determineded through facial appearance observation,thus,the patients were trained to execute bordering protrusive, retrusive and bilateral lateral-protrusive movements wearing the intraoral apparatus and a Gothic Arch Tracing was made, the apex of the Gothic Arch Tracing was defined as the gothic arch position. |
Procedure: the centric relation
All participants were recorded the centric relation registrations according to the technique of the gothic tracing method and the neuromuscular method separately.
|
| Experimental: record the centric relation using the neuromuscular method the participant were subjected to a low-frequency transcutaneous electrical nerve stimulation (TENS) using the J5 Myotronics for 45 minutes,With the help of TENS, complete relaxation of the muscles were achieved and the mandibular musculature was induced to guide the mandible in the physiologic position,thus using K7 to track the physical mandibular positon which was defined as the neuromuscular position. |
Procedure: the centric relation
All participants were recorded the centric relation registrations according to the technique of the gothic tracing method and the neuromuscular method separately.
|
Outcome Measures
Primary Outcome Measures
- the temporomandibular joint space [immediately]
according to the method of Ikeda and Kawamura, tmj space measurement in sagittal of the CBCT images were performed
Secondary Outcome Measures
- the upper airway [immediately]
Using the sinus/airway feature of the Dolphin software to reconstruct the upper airway,it included three region: the nasopharynx, oropharynx, and hypopharynx
Other Outcome Measures
- the mandibular position [immediately]
convert the DICOM files into the exocad software and analyse the difference of the mandibular position determined by the technique of the gothic tracing method and the neuromuscular method separately.
Eligibility Criteria
Criteria
Inclusion Criteria:
absence of the mandibular position Classified as ASA 1 or 2 (normal healthy patient or with mild systemic disease, according to the American Society of Anaesthesiologists Physical Status Classification System); Absence of the symptoms and signs of the temporomandibular joint; Willing to participate and to sign a written informed consent form.
Exclusion Criteria:
Cardiac pacemaker carriers and pregnant women; people with heart pace disorders and epilepsy; Temporomandibular or craniocervical disorders.
Contacts and Locations
Locations
| Site | City | State | Country | Postal Code | |
|---|---|---|---|---|---|
| 1 | Fujian Medical University | Fuzhou | Fujian | China | 350004 |
Sponsors and Collaborators
- Fujian Medical University
Investigators
- Principal Investigator: Hao Yu, Fujian Medical University
Study Documents (Full-Text)
None provided.More Information
Publications
None provided.- 20200901