Angle Class IINCT05655169
Which is Better Piezosurgery or Piezosurgery With Laser in Accelerating Orthodontic Tooth Movement
A study testing Piezosurgery and GaALAs diode laser, Piezosurgery and Fixed orthodontic appliance in people with Angle Class II, run by Damascus University at 1 site in Syria.
Trial summary
Sixty patients who need extraction-based treatment of the maxillary first premolars with subsequent retraction of the maxillary anterior teeth will be divided randomly into three groups: piezocision group, piezocision with low-level laser therapy group, and control group. Read more about this study
- Who is it for?
- Ages 17 to 28 years
- Conditions the study is for
- Angle Class II
- What is being tested?
- Piezosurgery and GaALAs diode laser, Piezosurgery and Fixed orthodontic appliance
- Type of treatment
- Surgery or procedure
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 63 participants
- Where
- 1 siteSyria
- Study dates
- 9 Oct 2019to 20 Dec 2021
- 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 17 to 28 years
- All sexes
- No healthy volunteers
- Child, Adult
Who may be able to join
- Adult healthy patients, Male and female, Age range: 17-28 years.
- Class II Division 1 malocclusion :
- Mild/moderate skeletal Class II (sagittal discrepancy angle ≤7)
- Overjet ≤10
- Normal or excessive facial height (Clinically and then cephalometrically assessed using these three angles: mandibular/cranial base angle, maxillary/mandibular plane angle, and facial axis angle)
- Mild to moderate crowding ≤ 4
Show all 13Show fewer
- Permanent occlusion.
- Existence of all the upper teeth (except third molars).
- Good oral and periodontal health:
- Probing depth < 4 mm
- No radiographic evidence of bone loss.
- Gingival index ≤ 1
- Plaque index ≤ 1
Who cannot join
- Medical problems that affect tooth movement (corticosteroid, nonsteroidal anti-inflammatory drugs (NSAIDs), …)
- Presence of primary teeth in the maxillary arch
- Missing permanent maxillary teeth (except third molars).
- Poor oral hygiene or Current periodontal disease:
- Probing depth ≥ 4 mm
- radiographic evidence of bone loss
Show all 9Show fewer
- Gingival index > 1
- Plaque index > 1
- The patient had previous orthodontic treatment
Trial locations and contacts
1 site in 1 country.
About this study
Official title: Effectiveness of Piezocision or the Combination of Piezocision and Low-level Laser Therapy on Orthodontic Tooth Movement During En-masse Retraction and the Associated Dentoalveolar Changes: A Three-arm Randomized Controlled Trial
Sixty patients who need extraction-based treatment of the maxillary first premolars with subsequent retraction of the maxillary anterior teeth will be divided randomly into three groups: piezocision group, piezocision with low-level laser therapy group, and control group. In each group, after the levelling and alignment phase is completed, the rectangular stainless steel archwires (0.019" × 0.025") will be inserted, then after two weeks, the en masse retraction will be started via closed nickel-titanium coil springs applying 250 g of force per side. For anchorage, mini implants will be inserted between the second premolars and the first molar on each side.
Read the detailed description
Regarding the Piezocision, vertical soft-tissue incisions will be made on the buccal and palatal gingiva. One incision will be made between the roots of the six upper anterior teeth, and two incisions will be made between the upper canines and the second premolars. The incisions will be 5 mm long and start 4 mm apical to the interdental papilla. Then a piezosurgery knife will be inserted to perform the cortical alveolar incisions with 3-mm in-depth and 8 mm in length. No suturing will be needed.
Regarding the piezocision with the later application of low-level laser therapy (LLLT):
After six weeks of piezosurgery, a diode laser (wavelength: 810 nm and exposure time of 10 seconds\point) 10 seconds per point will be applied on each tooth of the six maxillary anterior teeth according to this protocol: the root will be divided theoretically into two halves; gingival and cervical, and the laser will be applied in the center of each half from both buccal and palatal sides which means four application points and total energy of 16 Joules per tooth. LLLT irradiation will be performed in the sixth week after the onset of mass retraction (day 0). After that, irradiation is repeated on days 3, 7, and 14, then every two weeks, until the class I canine relationship is achieved and/or spaces lateral to incisors are closed
- Conditions
- Angle Class II
- Being tested
- Piezosurgery and GaALAs diode laser, Piezosurgery, Fixed orthodontic appliance
- Medical subject headings
- Malocclusion, Angle Class II
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
Piezosurgery and GaALAs diode laserProcedure or surgery
One incision will be made between the roots of the six upper anterior teeth, and two incisions will be made between the upper canines and the second premolars. The incisions will be 5 mm long and start 4 mm apical to the interdental papilla.
After six weeks of piezosurgery, GaALAs diode laser (wavelength: 810 nm and exposure time of 10 seconds\point) 10 seconds per point will be applied.
PiezosurgeryProcedure or surgery
One incision will be made between the roots of the six upper anterior teeth, and two incisions will be made between the upper canines and the second premolars. The incisions will be 5 mm long and start 4 mm apical to the interdental papilla.
Fixed orthodontic applianceOther
After the levelling and alignment phase is completed, the rectangular stainless steel archwires (0.019" × 0.025") will be inserted, then after two weeks, the en masse retraction will be started via closed nickel-titanium coil springs applying 250 g of force per side.
| Study group | Role | What they receive |
|---|---|---|
| Piezosurgery and low-level laser therapy | Experimental | Piezocision will be applied in this group of patients using a piezosurgery knife and after six weeks of initial retraction, low-level laser therapy will be applied in this group of patients using a diode laser device. Receives: Procedure: Piezosurgery and GaALAs diode laser |
| Piezosurgery only | Experimental | Piezocision will be applied in this group of patients using a piezosurgery knife Receives: Procedure: Piezosurgery |
| Traditional treatment without acceleration | Active comparator | In this group of patients, the en masse retraction will be conventional without any acceleration intervention. Receives: Other: Fixed orthodontic appliance |
What is being measured
The primary outcome is the main question the study is designed to answer.
The rate of en-masse retraction of upper anterior teeth
The rate of en-masse retraction of upper anterior teeth (mm/month) in each group will be calculated. This outcome will be measured by the following steps: Drawing a projection from the upper canine apex to the middle palatal bone line. Drawing a projection from the upper central incisor edge to the middle palatal bone line. Drawing a projection from the mesial ending of the third palatal rugae to the middle palatal bone line. Measuring the distance (mm) between the canine apex and third palatal rugae projections. Measuring the distance (mm) between the central incisor edge and third palatal rugae projections. The rate of en-masse retraction will be measured by dividing the distance between the canine apex/central incisor edge projections and the third palatal rugae projection by the time elapsed between assessment times.
Measured: This will be assessed at the end of the active treatment, which is expected to occur within five months
Change in the anteroposterior movement of the molar
The anteroposterior movement of the molar (mm/month) in each group will be calculated. This outcome will be measured on the dental casts by drawing two projections from the central groove of the first maxillary molar and the mesial ending of the third palatal rugae to the middle palatal bone line. The anteroposterior movement of the first maxillary molar (mm) will be measured by dividing the distance between the two projections by the time elapsed between assessment times.
Measured: Time 0:1 day before the beginning of the retraction phase (baseline). Time 1: after 1 month from the beginning. Time 2: after 2 months. Time 3: after 3 months. Time 4: after 4 months. Time 5: immediately after the end of the retraction phase
Change in the inter-canine width
The change in the inter-canine width (mm/month) in each group will be calculated. Assessment will be performed by measuring the distance between the cusp tips of the two upper canines. This variable will be measured on dental casts.
Measured: Time 0:1 day before the beginning of the retraction phase (baseline). Time 1: after 1 month from the beginning. Time 2: after 2 months. Time 3: after 3 months. Time 4: after 4 months. Time 5: immediately after the end of the retraction phase
Change in the inter-molar width at 5 months
The change in the inter-molar width (mm/month) in each group will be calculated. Assessment will be performed by measuring the distance between the central groove of the two first maxillary molars. This variable will be measured on dental casts.
Measured: Time 0:1 day before the beginning of the retraction phase (baseline). Time 1: after 1 month from the beginning. Time 2: after 2 months. Time 3: after 3 months. Time 4: after 4 months. Time 5: immediately after the end of the retraction phase
Secondary outcomes (1)
Change in molar antero-posterior position
The amount of distance being travelled by the first molars is going to be measured on study models taken at monthly intervals until the end of the retraction phase.
Measured: Time 0:1 day before the beginning of the retraction phase (baseline). Time 1: after 1 month from the beginning. Time 2: after 2 months. Time 3: after 3 months. Time 4: after 4 months. Time 5: immediately after the end of the retraction phase
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted19 Dec 2022
- Study start9 Oct 2019
- Primary completion12 Jan 2021
- Study completion20 Dec 2021
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Publications (6)Papers the sponsor has linked to this study.
- Other trials for Angle Class IIStudies of the same condition, open and under way.
- 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
- Masking
- Single blind
- Who is masked
- Outcomes assessor
- Enrolment
- 63 participants (actual)
Sponsor and investigators
- Lead sponsor
- Damascus University
- Sponsor type
- University, hospital or other
- Responsible party
- Sponsor
- Investigators
- Mudar Mohammad Mousa, DDS, Principal investigator, Department of orthodontics, Damascus University, SyriaMohammad Y. Hajeer, DDS,MSc,PhD, Study director, Department of orthodontics, Damascus University, Syria
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT05655169
- Sponsor's protocol ID
- UDDS-Ortho-14-2022
- Status last verified
- Nov 2024
- First submitted
- 20 Nov 2022
- Last updated
- 12 Nov 2024
- Results posted
- No
- Data monitoring committee
- Yes
- FDA-regulated drug
- No
- FDA-regulated device
- No
- Individual data sharing
- No
Publications
Abdelhameed AN, Refai WMM. Evaluation of the Effect of Combined Low Energy Laser Application and Micro-Osteoperforations versus the Effect of Application of Each Technique Separately On the Rate of Orthodontic Tooth Movement. Open Access Maced J Med Sci. 2018 Nov 15;6(11):2180-2185. doi: 10.3889/oamjms.2018.386. eCollection 2018 Nov 25.
PubMed 30559886Alfawal AMH, Hajeer MY, Ajaj MA, Hamadah O, Brad B, Latifeh Y. Evaluation of patient-centered outcomes associated with the acceleration of canine retraction by using minimally invasive surgical procedures: A randomized clinical controlled trial. Dent Med Probl. 2020 Jul-Sep;57(3):285-293. doi: 10.17219/dmp/120181.
PubMed 32909702Hatrom AA, Zawawi KH, Al-Ali RM, Sabban HM, Zahid TM, Al-Turki GA, Hassan AH. Effect of piezocision corticotomy on en-masse retraction. Angle Orthod. 2020 Sep 1;90(5):648-654. doi: 10.2319/092719-615.1.
PubMed 33378476Al-Ibrahim HM, Hajeer MY, Alkhouri I, Zinah E. Leveling and alignment time and the periodontal status in patients with severe upper crowding treated by corticotomy-assisted self-ligating brackets in comparison with conventional or self-ligating brackets only: a 3-arm randomized controlled clinical trial. J World Fed Orthod. 2022 Feb;11(1):3-11. doi: 10.1016/j.ejwf.2021.09.002. Epub 2021 Oct 21.
PubMed 34688577Khlef HN, Hajeer MY, Ajaj MA, Heshmeh O, Youssef N, Mahaini L. The effectiveness of traditional corticotomy vs flapless corticotomy in miniscrew-supported en-masse retraction of maxillary anterior teeth in patients with Class II Division 1 malocclusion: A single-centered, randomized controlled clinical trial. Am J Orthod Dentofacial Orthop. 2020 Dec;158(6):e111-e120. doi: 10.1016/j.ajodo.2020.08.008. Epub 2020 Nov 4.
PubMed 33158633Mousa MM, Hajeer MY, Alam MK, Aljabban O, Almahdi WH. Evaluation of low-level laser therapy and piezocision in the en-masse retraction of upper anterior teeth. Eur J Orthod. 2025 Apr 8;47(3):cjaf026. doi: 10.1093/ejo/cjaf026.
PubMed 40353446
Study at a glance
From the registry record, last updated by the sponsor on 12 Nov 2024. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Effectiveness of Piezocision or the Combination of Piezocision and Low-level Laser Therapy on Orthodontic Tooth Movement During En-masse Retraction and the Associated Dentoalveolar Changes: A Three-arm Randomized Controlled Trial
- ClinicalTrials.gov ID
- NCT05655169
- Acronym / sponsor ID
- UDDS-Ortho-14-2022
- Conditions
- Angle Class II
- Study type
- Interventional
- Recruitment status
- Completed
- Enrolment
- 63 participants (actual)
- Lead sponsor
- Damascus UniversityUniversity, hospital or other
- Study start
- 9 Oct 2019 (actual)
- Primary completion
- 12 Jan 2021 (actual)
- Study completion
- 20 Dec 2021 (actual)
- First posted
- 19 Dec 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.
Sixty patients who need extraction-based treatment of the maxillary first premolars with subsequent retraction of the maxillary anterior teeth will be divided randomly into three groups: piezocision group, piezocision with low-level laser therapy group, and control group. In each group, after the levelling and alignment phase is completed, the rectangular stainless steel archwires (0.019" × 0.025") will be inserted, then after two weeks, the en masse retraction will be started via closed nickel-titanium coil springs applying 250 g of force per side. For anchorage, mini implants will be inserted between the second premolars and the first molar on each side.
Detailed description
Regarding the Piezocision, vertical soft-tissue incisions will be made on the buccal and palatal gingiva. One incision will be made between the roots of the six upper anterior teeth, and two incisions will be made between the upper canines and the second premolars. The incisions will be 5 mm long and start 4 mm apical to the interdental papilla. Then a piezosurgery knife will be inserted to perform the cortical alveolar incisions with 3-mm in-depth and 8 mm in length. No suturing will be needed.
Regarding the piezocision with the later application of low-level laser therapy (LLLT):
After six weeks of piezosurgery, a diode laser (wavelength: 810 nm and exposure time of 10 seconds\point) 10 seconds per point will be applied on each tooth of the six maxillary anterior teeth according to this protocol: the root will be divided theoretically into two halves; gingival and cervical, and the laser will be applied in the center of each half from both buccal and palatal sides which means four application points and total energy of 16 Joules per tooth. LLLT irradiation will be performed in the sixth week after the onset of mass retraction (day 0). After that, irradiation is repeated on days 3, 7, and 14, then every two weeks, until the class I canine relationship is achieved and/or spaces lateral to incisors are closed
Study design
- Primary purpose
- Treatment
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- Single blind (outcomes assessor)
- Number of arms
- 3
| Arm | Type | Receives |
|---|---|---|
| Piezosurgery and low-level laser therapy | Experimental | Procedure: Piezosurgery and GaALAs diode laserPiezocision will be applied in this group of patients using a piezosurgery knife and after six weeks of initial retraction, low-level laser therapy will be applied in this group of patients using a diode laser device. |
| Piezosurgery only | Experimental | Procedure: PiezosurgeryPiezocision will be applied in this group of patients using a piezosurgery knife |
| Traditional treatment without acceleration | Active comparator | Other: Fixed orthodontic applianceIn this group of patients, the en masse retraction will be conventional without any acceleration intervention. |
Who may qualify
- Ages
- 17 to 28 years
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Child, Adult
Key inclusion criteria (13 listed)
- Adult healthy patients, Male and female, Age range: 17-28 years.
- Class II Division 1 malocclusion :
- Permanent occlusion.
- Existence of all the upper teeth (except third molars).
- Good oral and periodontal health:
Key exclusion criteria (9 listed)
- Medical problems that affect tooth movement (corticosteroid, nonsteroidal anti-inflammatory drugs (NSAIDs), …)
- Presence of primary teeth in the maxillary arch
- Missing permanent maxillary teeth (except third molars).
- Poor oral hygiene or Current periodontal disease:
- The patient had previous orthodontic treatment
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 |
|---|---|---|
| Piezosurgery and GaALAs diode laserOne incision will be made between the roots of the six upper anterior teeth, and two incisions will be made between the upper canines and the second premolars. The incisions will be 5 mm long and start 4 mm apical to the interdental papilla. After six weeks of piezosurgery, GaALAs diode laser (wavelength: 810 nm and exposure time of 10 seconds\point) 10 seconds per point will be applied. | Procedure or surgery | Piezosurgery and low-level laser therapy |
| PiezosurgeryOne incision will be made between the roots of the six upper anterior teeth, and two incisions will be made between the upper canines and the second premolars. The incisions will be 5 mm long and start 4 mm apical to the interdental papilla. | Procedure or surgery | Piezosurgery only |
| Fixed orthodontic applianceAfter the levelling and alignment phase is completed, the rectangular stainless steel archwires (0.019" × 0.025") will be inserted, then after two weeks, the en masse retraction will be started via closed nickel-titanium coil springs applying 250 g of force per side. | Other | Traditional treatment without acceleration |
Primary outcome
The rate of en-masse retraction of upper anterior teeth
Time frame: This will be assessed at the end of the active treatment, which is expected to occur within five months
The rate of en-masse retraction of upper anterior teeth (mm/month) in each group will be calculated. This outcome will be measured by the following steps: Drawing a projection from the upper canine apex to the middle palatal bone line. Drawing a projection from the upper central incisor edge to the middle palatal bone line. Drawing a projection from the mesial ending of the third palatal rugae to the middle palatal bone line. Measuring the distance (mm) between the canine apex and third palatal rugae projections. Measuring the distance (mm) between the central incisor edge and third palatal rugae projections. The rate of en-masse retraction will be measured by dividing the distance between the canine apex/central incisor edge projections and the third palatal rugae projection by the time elapsed between assessment times.
Change in the anteroposterior movement of the molar
Time frame: Time 0:1 day before the beginning of the retraction phase (baseline). Time 1: after 1 month from the beginning. Time 2: after 2 months. Time 3: after 3 months. Time 4: after 4 months. Time 5: immediately after the end of the retraction phase
The anteroposterior movement of the molar (mm/month) in each group will be calculated. This outcome will be measured on the dental casts by drawing two projections from the central groove of the first maxillary molar and the mesial ending of the third palatal rugae to the middle palatal bone line. The anteroposterior movement of the first maxillary molar (mm) will be measured by dividing the distance between the two projections by the time elapsed between assessment times.
Change in the inter-canine width
Time frame: Time 0:1 day before the beginning of the retraction phase (baseline). Time 1: after 1 month from the beginning. Time 2: after 2 months. Time 3: after 3 months. Time 4: after 4 months. Time 5: immediately after the end of the retraction phase
The change in the inter-canine width (mm/month) in each group will be calculated. Assessment will be performed by measuring the distance between the cusp tips of the two upper canines. This variable will be measured on dental casts.
Change in the inter-molar width at 5 months
Time frame: Time 0:1 day before the beginning of the retraction phase (baseline). Time 1: after 1 month from the beginning. Time 2: after 2 months. Time 3: after 3 months. Time 4: after 4 months. Time 5: immediately after the end of the retraction phase
The change in the inter-molar width (mm/month) in each group will be calculated. Assessment will be performed by measuring the distance between the central groove of the two first maxillary molars. This variable will be measured on dental casts.
1 secondary outcome
Change in molar antero-posterior position
Time frame: Time 0:1 day before the beginning of the retraction phase (baseline). Time 1: after 1 month from the beginning. Time 2: after 2 months. Time 3: after 3 months. Time 4: after 4 months. Time 5: immediately after the end of the retraction phase
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 12 Nov 2024.
- Background: PubMed 30559886Abdelhameed AN, Refai WMM. Evaluation of the Effect of Combined Low Energy Laser Application and Micro-Osteoperforations versus the Effect of Application of Each Technique Separately On the Rate of Orthodontic Tooth Movement. Open Access Maced J Med Sci. 2018 Nov 15;6(11):2180-2185. doi: 10.3889/oamjms.2018.386. eCollection 2018 Nov 25.
- Background: PubMed 32909702Alfawal AMH, Hajeer MY, Ajaj MA, Hamadah O, Brad B, Latifeh Y. Evaluation of patient-centered outcomes associated with the acceleration of canine retraction by using minimally invasive surgical procedures: A randomized clinical controlled trial. Dent Med Probl. 2020 Jul-Sep;57(3):285-293. doi: 10.17219/dmp/120181.
- Background: PubMed 33378476Hatrom AA, Zawawi KH, Al-Ali RM, Sabban HM, Zahid TM, Al-Turki GA, Hassan AH. Effect of piezocision corticotomy on en-masse retraction. Angle Orthod. 2020 Sep 1;90(5):648-654. doi: 10.2319/092719-615.1.
- Background: PubMed 34688577Al-Ibrahim HM, Hajeer MY, Alkhouri I, Zinah E. Leveling and alignment time and the periodontal status in patients with severe upper crowding treated by corticotomy-assisted self-ligating brackets in comparison with conventional or self-ligating brackets only: a 3-arm randomized controlled clinical trial. J World Fed Orthod. 2022 Feb;11(1):3-11. doi: 10.1016/j.ejwf.2021.09.002. Epub 2021 Oct 21.
- Background: PubMed 33158633Khlef HN, Hajeer MY, Ajaj MA, Heshmeh O, Youssef N, Mahaini L. The effectiveness of traditional corticotomy vs flapless corticotomy in miniscrew-supported en-masse retraction of maxillary anterior teeth in patients with Class II Division 1 malocclusion: A single-centered, randomized controlled clinical trial. Am J Orthod Dentofacial Orthop. 2020 Dec;158(6):e111-e120. doi: 10.1016/j.ajodo.2020.08.008. Epub 2020 Nov 4.
- Derived from this study: PubMed 40353446Mousa MM, Hajeer MY, Alam MK, Aljabban O, Almahdi WH. Evaluation of low-level laser therapy and piezocision in the en-masse retraction of upper anterior teeth. Eur J Orthod. 2025 Apr 8;47(3):cjaf026. doi: 10.1093/ejo/cjaf026.
- 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.
Mudar Mohammad Mousa, DDS principal investigator
Department of orthodontics, Damascus University, Syria
Mohammad Y. Hajeer, DDS,MSc,PhD study director
Department of orthodontics, Damascus University, Syria
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A study testing Piezosurgery and GaALAs diode laser, Piezosurgery and Fixed orthodontic appliance in people with Angle Class II, run by Damascus University at 1 site in Syria.
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 13 inclusion and 9 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 12 Nov 2024. 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 Syria. 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?
The rate of en-masse retraction of upper anterior teeth (time frame: This will be assessed at the end of the active treatment, which is expected to occur within five months). The study lists 4 primary outcomes in all. It is what the study was designed to measure, not a finding.
Where can I read the original study information?
On the ClinicalTrials.gov record for NCT05655169, which also lists 6 linked publications.
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 12 Nov 2024.