Angle MalocclusionNCT07696494
Cephalometric and Digital Dental Arch Characteristics Across Angle Malocclusion Groups in Orthodontic Patients From the Mekong Delta, Vietnam
An observational study of Angle Malocclusion and Cephalometry, run by Can Tho University of Medicine and Pharmacy at 1 site in Vietnam.
Trial summary
This clinic-based cross-sectional study compared skeletal, dental, soft-tissue, and digital dental arch characteristics among adolescents aged 11-18 years with Angle Class I, Class II, and Class III malocclusions in the Mekong Delta, Vietnam. Read more about this study
- Who is it for?
- Ages 15 to 18 years
- Conditions the study is for
- Angle Malocclusion, Cephalometry, Digital Dental Models
- How many people
- 300 participants
- Where
- 1 siteVietnam
- Study dates
- 20 Jun 2023to 20 Jun 2024
- Phase
- Observational
- 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 15 to 18 years
- All sexes
- Child, Adult
Study population: The study population consisted of 300 orthodontic patients aged 15-18 years who attended the Faculty of Odonto-Stomatology, Can Tho University of Medicine and Pharmacy, Vietnam. Participants had permanent dentition and were classified into Angle Class I, Class II, or Class III malocclusion based on clinical examination. All participants had complete lateral cephalometric radiographs and three-dimensional intraoral scans and had not received previous orthodontic treatment.
Who may be able to join
- Adolescents aged 15-18 years.
- Permanent dentition.
- Diagnosed with Angle Class I, II, or III malocclusion.
- Complete lateral cephalometric radiographs and digital intraoral scans available.
- No previous orthodontic treatment.
Who cannot join
- Craniofacial syndromes or congenital anomalies.
- History of orthognathic surgery.
- Missing permanent teeth (excluding third molars).
- Poor-quality radiographs or digital scans.
- Incomplete clinical records.
Trial locations and contacts
1 site in 1 country.
About this study
Official title: Cephalometric and Digital Dental Arch Characteristics Across Angle Malocclusion Groups in Orthodontic Patients From the Mekong Delta, Vietnam: a Cross-sectional Study
This clinic-based cross-sectional study compared skeletal, dental, soft-tissue, and digital dental arch characteristics among adolescents aged 11-18 years with Angle Class I, Class II, and Class III malocclusions in the Mekong Delta, Vietnam. Lateral cephalometric radiographs and three-dimensional intraoral scans were used to evaluate craniofacial morphology and dental arch dimensions. Significant differences were observed in sagittal skeletal relationships, vertical facial characteristics, dentoalveolar measurements, overjet, overbite, and maxillary arch dimensions among the three malocclusion groups. These findings provide clinically relevant information that may support individualized orthodontic diagnosis and treatment planning for adolescents in comparable clinical settings, while not representing population norms or regional prevalence estimates
- Conditions
- Angle Malocclusion, Cephalometry, Digital Dental Models
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
| Study group | Role | What they receive |
|---|---|---|
| Angle Class I Malocclusion | Orthodontic patients aged 15-18 years diagnosed with Angle Class I malocclusion. | |
| Angle Class II Malocclusion | Orthodontic patients aged 15-18 years diagnosed with Angle Class II malocclusion. | |
| Angle Class III Malocclusion | Orthodontic patients aged 15-18 years diagnosed with Angle Class III malocclusion. |
What is being measured
The primary outcome is the main question the study is designed to answer.
Cephalometric Characteristics
Overall cephalometric characteristics measured from standardized lateral cephalometric radiographs and compared among Angle Class I, Class II, and Class III malocclusion groups using predefined cephalometric variables according to the study protocol.
Measured: Baseline
Secondary outcomes (1)
Digital Dental Arch Characteristics
Overall digital dental arch characteristics measured from three-dimensional intraoral digital models and compared among Angle Class I, Class II, and Class III malocclusion groups according to the study protocol.
Measured: Baseline
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted10 Jul 2026
- Study start20 Jun 2023
- Primary completion20 Jun 2024
- Study completion20 Jun 2024
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for Angle MalocclusionStudies 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
- Observational
- Observational model
- Cohort
- Time perspective
- Cross-sectional
- Enrolment
- 300 participants (actual)
Sponsor and investigators
- Lead sponsor
- Can Tho University of Medicine and Pharmacy
- Sponsor type
- University, hospital or other
- Responsible party
- Sponsor
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT07696494
- Sponsor's protocol ID
- Assoc. Prof.Le Nguyen Lam
- Status last verified
- Jul 2026
- First submitted
- 3 Jul 2026
- Last updated
- 16 Jul 2026
- Results posted
- No
- FDA-regulated drug
- No
- FDA-regulated device
- No
Study at a glance
From the registry record, last updated by the sponsor on 16 Jul 2026. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Cephalometric and Digital Dental Arch Characteristics Across Angle Malocclusion Groups in Orthodontic Patients From the Mekong Delta, Vietnam: a Cross-sectional Study
- ClinicalTrials.gov ID
- NCT07696494
- Acronym / sponsor ID
- Assoc. Prof.Le Nguyen Lam
- Conditions
- Angle Malocclusion, Cephalometry, Digital Dental Models
- Study type
- Observational
- Recruitment status
- Completed
- Enrolment
- 300 participants (actual)
- Lead sponsor
- Can Tho University of Medicine and PharmacyUniversity, hospital or other
- Study start
- 20 Jun 2023 (actual)
- Primary completion
- 20 Jun 2024 (actual)
- Study completion
- 20 Jun 2024 (actual)
- First posted
- 10 Jul 2026 (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 clinic-based cross-sectional study compared skeletal, dental, soft-tissue, and digital dental arch characteristics among adolescents aged 11-18 years with Angle Class I, Class II, and Class III malocclusions in the Mekong Delta, Vietnam. Lateral cephalometric radiographs and three-dimensional intraoral scans were used to evaluate craniofacial morphology and dental arch dimensions. Significant differences were observed in sagittal skeletal relationships, vertical facial characteristics, dentoalveolar measurements, overjet, overbite, and maxillary arch dimensions among the three malocclusion groups. These findings provide clinically relevant information that may support individualized orthodontic diagnosis and treatment planning for adolescents in comparable clinical settings, while not representing population norms or regional prevalence estimates
Study design
- Observational model
- Cohort
- Time perspective
- Cross-sectional
- Number of arms
- 3
| Arm | Type | Receives |
|---|---|---|
| Angle Class I Malocclusion | – | –Orthodontic patients aged 15-18 years diagnosed with Angle Class I malocclusion. |
| Angle Class II Malocclusion | – | –Orthodontic patients aged 15-18 years diagnosed with Angle Class II malocclusion. |
| Angle Class III Malocclusion | – | –Orthodontic patients aged 15-18 years diagnosed with Angle Class III malocclusion. |
Who may qualify
- Ages
- 15 to 18 years
- Sex
- All
- Age groups
- Child, Adult
- Study population
- The study population consisted of 300 orthodontic patients aged 15-18 years who attended the Faculty of Odonto-Stomatology, Can Tho University of Medicine and Pharmacy, Vietnam. Participants had permanent dentition and were classified into Angle Class I, Class II, or Class III malocclusion based on clinical examination. All participants had complete lateral cephalometric radiographs and three-dimensional intraoral scans and had not received previous orthodontic treatment.
Key inclusion criteria (5 listed)
- Adolescents aged 15-18 years.
- Permanent dentition.
- Diagnosed with Angle Class I, II, or III malocclusion.
- Complete lateral cephalometric radiographs and digital intraoral scans available.
- No previous orthodontic treatment.
Key exclusion criteria (5 listed)
- Craniofacial syndromes or congenital anomalies.
- History of orthognathic surgery.
- Missing permanent teeth (excluding third molars).
- Poor-quality radiographs or digital scans.
- Incomplete clinical records.
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Primary outcome
Cephalometric Characteristics
Time frame: Baseline
Overall cephalometric characteristics measured from standardized lateral cephalometric radiographs and compared among Angle Class I, Class II, and Class III malocclusion groups using predefined cephalometric variables according to the study protocol.
1 secondary outcome
Digital Dental Arch Characteristics
Time frame: Baseline
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 16 Jul 2026.
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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.
The record lists no contact. Use the official record to reach the sponsor.
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
An observational study of Angle Malocclusion and Cephalometry, run by Can Tho University of Medicine and Pharmacy at 1 site in Vietnam.
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 5 inclusion and 5 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 16 Jul 2026. 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 Vietnam. 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?
Cephalometric Characteristics (time frame: Baseline). 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 16 Jul 2026.