Effectives of Non-extraction Orthodontic Treatment of Angle Class I Malocclusion

Not Applicable

Completed

• Conditions: Angle Class I

• Registration Number: NCT06638983
• Lead Sponsor: Can Tho University of Medicine and Pharmacy

Brief Summary

Introduction: The investigators aimed to evaluate the effectiveness of non-extraction orthodontic treatment for Angle class I malocclusion.

Detailed Description

Many people are also concerned about their oral health. When social communication is more important, aesthetic concerns also receive a lot of attention. A beautiful smile can boost self-assurance and empathy. Angle class I malocclusion is prevalent, and dental malocclusion is a significant percentage of the population at all ages . Tooth extraction is a controversial topic in orthodontics, with the general view being against it. Angle and his students argued against it, but Charles Tweed saw recurrence in the 1930s after retreatment without extraction and retreatment with extraction. The use of tooth extraction therapy increased in the 1960s but has become less common since the late 20th century. The science of orthodontics has made significant advancements under the principle of least invasiveness, but the debate remains about whether to consider tooth extraction. The contemporary view believes that the majority of patients may and should be treated without tooth extraction, but in rare circumstances, extraction is necessary to make up for crowding and excessive incisor protrusion that harm the beauty. In truth, each individual must be thoroughly evaluated in light of their bite, cosmetic condition, and stability in the wake of therapy before any course of action is recommended. The investigators aimed to evaluate the effectiveness of non-extraction orthodontic treatment for Angle class I malocclusion.

Study Timeline

• Status Verified: 2020-05
• Study Start: 2020-05-20
• Primary Completion: 2022-05-20
• Study Completion: 2022-06-15
• Study First Submitted: 2024-10-07
• Study First Submitted QC: 2024-10-10
• Last Update Submitted: 2024-10-10
• Study First Posted: 2024-10-14
• Last Update Posted: 2024-10-14

Recruitment & Eligibility

• Status: COMPLETED
• Sex: All
• Target Recruitment: 41

Inclusion Criteria

• Patients (≥ 15 years) with indicated Angle class I malocclusion and missing space ≤9mm
• Cervical vertebral maturation stages 5, 6, (CS5, CS6): cervical vertebrae 2, 3, and 4 have a concave curved lower border and have at least one rectangle C3, C4 cervical vertebra upright or at least square
• No prior orthodontic treatment
• Fully erupted permanent teeth (except third molars)
• Voluntary research participation

Exclusion Criteria

Face soft tissue surgical procedures, periodontal disease, and maxillofacial congenital anomalies

Study & Design

• Study Type: INTERVENTIONAL
• Study Design: SINGLE_GROUP

Primary Outcome Measures

Name	Time	Method
We aimed to evaluate the effectiveness of non-extraction orthodontic treatment for Angle class I malocclusion.	Cephalometric radiographs, and extraoral and intraoral photographs, cast impressions and PAR Index (Peer Assessment Rating) were collected before and after intervention through study completion, an average of 2 years	Cephalometric radiographs, and extraoral and intraoral photographs, and cast impressions were collected before and after intervention. The weighted PAR Index (Peer Assessment Rating) employed to determine outcome of orthodontic treatment

Trial Locations

Locations (1)

Can Tho University of Medicine and Pharmacy; 🇻🇳 Cần Thơ, Vietnam