Temporomandibular Joint DisordersNCT05362201
Application of the Visualization of Treatment Objective (VTO) Analyses in Fabricating Anterior Repositioning Splints
A study testing therapeutic position of the anterior repositioning splints in people with Temporomandibular Joint Disorders, run by Fujian Medical University at 1 site in China.
Trial summary
This study conducted a randomized controlled clinical trial to evaluate the effect of the the therapeutic position of the anterior repositioning splint determined by VTO analyse compared with traditional method for the treatment of the Anterior Disk Displacement with Reduction of the Temporomandibular Joint. Read more about this study
- Who is it for?
- Ages 10 to 30 yearsHealthy volunteers can take part
- Conditions the study is for
- Temporomandibular Joint Disorders
- What is being tested?
- therapeutic position of the anterior repositioning splints
- Type of treatment
- Surgery or procedure
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 20 participants
- Where
- 1 siteChina
- Study dates
- 1 Apr 2022to 30 Oct 2024
- Phase
- Interventional
- Are there results?
- None posted in the registry
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 10 to 30 years
- All sexes
- Healthy volunteers accepted
- Child, Adult
Who may be able to join
- anterior disc displacement with reduction (ADDWR) confirmed by magnetic resonance imaging (MRI)
- Classified as ASA 1 or 2
- Willing to participate and sign a written informed consent form.
Who cannot join
- pregnant women
- heart pace disorders and epilepsy
Trial locations and contacts
1 site in 1 country.
About this study
Official title: Application of the Visualization of Treatment Objective (VTO) Analyses in the Treatment of the Temporomandibular Joint Disc Displacement
This study conducted a randomized controlled clinical trial to evaluate the effect of the the therapeutic position of the anterior repositioning splint determined by VTO analyse compared with traditional method for the treatment of the Anterior Disk Displacement with Reduction of the Temporomandibular Joint.
Read the detailed description
A randomised clinical trial was conducted with 20 patients diagnosed with ADDWR through RDC/TMD and they were randomly allocated into the group 1(traditional group):the therapeutic position of the ARS were determinded by the "minimum protrusive position",which was the traditional method to fabricate the anterior repositioning splints;group2(digitial group): the therapeutic position of the ARS were determinded by the VTO analyse,first,the participants were constructed to take CBCT and MRI scans,the ideal therapeutic position of the ARS were located in which the temporomandibular joint space distribute well and the condylar recapture the disc,the dentist could determine the amount of condylar movement and performed VTO analyse by assessing the CBCT and MRI scans ,then it could easily realize the final condylar movements with the application of the dental articulator.
They were followed-up in the baseline,1 month,2 and 3 months after the inserted of the splints using the Craniomandibular Index (CMI) for temporomandibular joint function and PHQ-9,GAD-7 for psychological assessments,the tmj space and disc-condylar angle were measured through the CBCT and MRI scans,before and after ARS therapy.
- Conditions
- Temporomandibular Joint Disorders
- Being tested
- therapeutic position of the anterior repositioning splints
- Keywords
- temporomandibular Joint Anterior Disc Displacement, the visualization of treatment objective (VTO), anterior repositioning Splint
- Medical subject headings
- Temporomandibular Joint Disorders
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
therapeutic position of the anterior repositioning splintsProcedure or surgery
the ADDWR paricipants will be allocated into 2 grounps and treated with anterior repositioning splints determined by traditional and digitial method respectively.
| Study group | Role | What they receive |
|---|---|---|
| the therapeutic position of the ARS were determinded by the "minimum protrusive position" | Active comparator | the therapeutic position of the ARS were determinded by the "minimum protrusive position",which was the traditional method to fabricate the anterior repositioning splints,the patients were instructed to protrusive the mandible in a therapeutic position in which the click is eliminated. Receives: Procedure: therapeutic position of the anterior repositioning splints |
| the therapeutic position of the ARS were determinded by the VTO analyse | Experimental | the therapeutic position of the ARS were determinded by the VTO analyse,first,the participants were constructed to take CBCT and MRI scans,the ideal therapeutic position of the ARS were located in which the temporomandibular joint space distribute well and the condylar recapture the disc,the dentist could determine the amount of condylar movement and performed VTO analyse by assessing the CBCT and MRI scans ,then it could easily realize the final condylar movements with the application of the dental articulator. Receives: Procedure: therapeutic position of the anterior repositioning splints |
What is being measured
The primary outcome is the main question the study is designed to answer.
temporomandibular joint function
the Craniomandibular Index (CMI) was used to assess the temporomandibular joint function after the inserted of the splints.
Measured: up to three months
Secondary outcomes (4)
psychological assessment the PHQ-9
the PHQ-9 were used to assess the psychological factors in the baseline,1 month,2 and 3 months after the inserted of the splints.
Measured: three months
psychological assessment GAD-7
GAD-7 were used to assess the psychological factors in the baseline,1 month,2 and 3 months after the inserted of the splints.
Measured: three months
disc-condyle angle
the disc-condyle angle were measured through MRI scan
Measured: three months
temporomandibular joint space
the temporomandibular joint space were calculated through CBCT scan
Measured: three months
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted5 May 2022
- Study start1 Apr 2022
- Primary completion30 Sep 2023
- Study completion30 Oct 2024
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for Temporomandibular Joint DisordersStudies of the same condition, open and under way.
- More trials run by Fujian Medical UniversityThe sponsor's other registered studies.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Interventional
- Phase
- Phase N/A
- Primary purpose
- Treatment
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Model description
- A randomised clinical trial was conducted with 20 patients diagnosed with ADDWR through RDC/TMD and they were randomly allocated into the group 1(traditional group):the therapeutic position of the ARS were determinded by the "minimum protrusive position";group2(digitial group): the therapeutic position of the ARS were determinded by the VTO analyse.
- Masking
- Double blind
- Who is masked
- Care provider, Outcomes assessor
- Enrolment
- 20 participants (actual)
Sponsor and investigators
- Lead sponsor
- Fujian Medical University
- Sponsor type
- University, hospital or other
- Responsible party
- Principal investigator, Hao Yu, Fujian Medical University
- Investigators
- Hao Yu, Principal investigator, Fujian Medical University
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT05362201
- Sponsor's protocol ID
- 20220309
- Status last verified
- Dec 2025
- First submitted
- 15 Apr 2022
- Last updated
- 24 Dec 2025
- Results posted
- No
- Data monitoring committee
- Yes
- FDA-regulated drug
- No
- FDA-regulated device
- No
- Individual data sharing
- No
Study at a glance
From the registry record, last updated by the sponsor on 24 Dec 2025. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Application of the Visualization of Treatment Objective (VTO) Analyses in the Treatment of the Temporomandibular Joint Disc Displacement
- ClinicalTrials.gov ID
- NCT05362201
- Acronym / sponsor ID
- 20220309
- Conditions
- Temporomandibular Joint Disorders
- Keywords
- temporomandibular Joint Anterior Disc Displacement, the visualization of treatment objective (VTO), anterior repositioning Splint
- Study type
- Interventional
- Recruitment status
- Completed
- Enrolment
- 20 participants (actual)
- Lead sponsor
- Fujian Medical UniversityUniversity, hospital or other
- Study start
- 1 Apr 2022 (actual)
- Primary completion
- 30 Sep 2023 (actual)
- Study completion
- 30 Oct 2024 (actual)
- First posted
- 5 May 2022 (actual)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
This study conducted a randomized controlled clinical trial to evaluate the effect of the the therapeutic position of the anterior repositioning splint determined by VTO analyse compared with traditional method for the treatment of the Anterior Disk Displacement with Reduction of the Temporomandibular Joint.
Detailed description
A randomised clinical trial was conducted with 20 patients diagnosed with ADDWR through RDC/TMD and they were randomly allocated into the group 1(traditional group):the therapeutic position of the ARS were determinded by the "minimum protrusive position",which was the traditional method to fabricate the anterior repositioning splints;group2(digitial group): the therapeutic position of the ARS were determinded by the VTO analyse,first,the participants were constructed to take CBCT and MRI scans,the ideal therapeutic position of the ARS were located in which the temporomandibular joint space distribute well and the condylar recapture the disc,the dentist could determine the amount of condylar movement and performed VTO analyse by assessing the CBCT and MRI scans ,then it could easily realize the final condylar movements with the application of the dental articulator.
They were followed-up in the baseline,1 month,2 and 3 months after the inserted of the splints using the Craniomandibular Index (CMI) for temporomandibular joint function and PHQ-9,GAD-7 for psychological assessments,the tmj space and disc-condylar angle were measured through the CBCT and MRI scans,before and after ARS therapy.
Study design
- Primary purpose
- Treatment
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- Double blind (care provider, outcomes assessor)
- Number of arms
- 2
- Model description
- A randomised clinical trial was conducted with 20 patients diagnosed with ADDWR through RDC/TMD and they were randomly allocated into the group 1(traditional group):the therapeutic position of the ARS were determinded by the "minimum protrusive position";group2(digitial group): the therapeutic position of the ARS were determinded by the VTO analyse.
| Arm | Type | Receives |
|---|---|---|
| the therapeutic position of the ARS were determinded by the "minimum protrusive position" | Active comparator | Procedure: therapeutic position of the anterior repositioning splintsthe therapeutic position of the ARS were determinded by the "minimum protrusive position",which was the traditional method to fabricate the anterior repositioning splints,the patients were instructed to protrusive the mandible in a therapeutic position in which the click is eliminated. |
| the therapeutic position of the ARS were determinded by the VTO analyse | Experimental | Procedure: therapeutic position of the anterior repositioning splintsthe therapeutic position of the ARS were determinded by the VTO analyse,first,the participants were constructed to take CBCT and MRI scans,the ideal therapeutic position of the ARS were located in which the temporomandibular joint space distribute well and the condylar recapture the disc,the dentist could determine the amount of condylar movement and performed VTO analyse by assessing the CBCT and MRI scans ,then it could easily realize the final condylar movements with the application of the dental articulator. |
Who may qualify
- Ages
- 10 to 30 years
- Sex
- All
- Healthy volunteers
- Accepted
- Age groups
- Child, Adult
Key inclusion criteria (3 listed)
- anterior disc displacement with reduction (ADDWR) confirmed by magnetic resonance imaging (MRI)
- Classified as ASA 1 or 2
- Willing to participate and sign a written informed consent form.
Key exclusion criteria (2 listed)
- pregnant women
- heart pace disorders and epilepsy
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| therapeutic position of the anterior repositioning splintsthe ADDWR paricipants will be allocated into 2 grounps and treated with anterior repositioning splints determined by traditional and digitial method respectively. | Procedure or surgery | the therapeutic position of the ARS were determinded by the "minimum protrusive position", the therapeutic position of the ARS were determinded by the VTO analyse |
Primary outcome
temporomandibular joint function
Time frame: up to three months
the Craniomandibular Index (CMI) was used to assess the temporomandibular joint function after the inserted of the splints.
4 secondary outcomes
psychological assessment the PHQ-9
Time frame: three months
psychological assessment GAD-7
Time frame: three months
disc-condyle angle
Time frame: three months
temporomandibular joint space
Time frame: three months
Results and safety
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 24 Dec 2025.
- Individual participant dataSharing planned: No
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
Hao Yu principal investigator
Fujian Medical University
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A study testing therapeutic position of the anterior repositioning splints in people with Temporomandibular Joint Disorders, run by Fujian Medical University at 1 site in China.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 3 inclusion and 2 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: finished, as of the sponsor's last update on 24 Dec 2025. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 1 site in China. Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
Are results available for this study?
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
How can a doctor refer a patient or contact the research team?
The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
temporomandibular joint function (time frame: up to three months). It is what the study was designed to measure, not a finding.
Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 24 Dec 2025; AzTrials last refreshed its copy on 7 Nov 2026.