Cephalometric and Digital Dental Arch Characteristics Across Angle Malocclusion Groups in Orthodontic Patients From the Mekong Delta, Vietnam

NCT07696494 | Completed

• 1 other identifier: Assoc. Prof.Le Nguyen Lam
• Study Type: observational
• Target: 300
• Locations: 1 country
• Sites: 1

Brief 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. 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; Digital Dental Models; Cephalometry

Outcome Measures

Primary Outcomes (1)

• 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.

  Baseline

Secondary Outcomes (1)

• Digital Dental Arch Characteristics

  Baseline

Study Arms (3)

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.

Eligibility Criteria

• Age: 15 Years - 18 Years
• Sex: all
• Age Groups: Child (0-17), Adult (18-64)
• Sampling Method: Non-Probability Sample

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.

You may qualify if:

• 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.

You may not qualify if:

• Craniofacial syndromes or congenital anomalies.
• History of orthognathic surgery.
• Missing permanent teeth (excluding third molars).
• Poor-quality radiographs or digital scans.
• Incomplete clinical records.

Sponsors & Collaborators

• Can Tho University of Medicine and Pharmacy: lead

Study Sites (1)

Can Tho University of Medicine and Pharmacy

Can Tho, +84, Vietnam

Location

Study Design

• Study Type: observational
• Observational Model: COHORT
• Time Perspective: CROSS SECTIONAL
• Sponsor Type: OTHER
• Responsible Party: SPONSOR

Study Record Dates

• First Submitted: July 3, 2026
• First Posted: July 10, 2026
• Study Start: June 20, 2023
• Primary Completion: June 20, 2024
• Study Completion: June 20, 2024
• Last Updated: July 16, 2026

Record last verified: 2026-07

Locations

VN (1)