Friction or Frictionless: What is the Most Effective Method for Retracting Anterior Teeth?

NCT06928896 | Completed DMC

• 1 other identifier: Le nguyên lâm ctump
• Study Type: interventional
• Target: 50
• Locations: 1 country
• Sites: 1

Brief Summary

Objective:To evaluate the effectiveness of the friction (sliding mechanism with elastomeric chains) and frictionless (T-loop) methods for retracting anterior teeth in Angle Class I malocclusion. Methods: This clinical intervention study examined the duration of maxillary incisor retraction from August 2022 to August 2024 in 42 adult patients who had completed canine retraction. The process involved resolving horizontal and vertical discrepancies, establishing a Class I relationship between the canines, and altering the overbite (the interproximal space between the lateral incisors and canines) until an ideal overbite index of 2 mm was achieved. Cone beam computed tomography (CBCT) was conducted before and after retraction to evaluate alveolar changes and speed.

Conditions

Angle Class I; Alveolar Bone Loss

Keywords

alveolar bone, elastomeric chains, friction, frictionless

Outcome Measures

Primary Outcomes (1)

• To evaluate the effectiveness of the friction (sliding mechanism with elastomeric chains) and frictionless (T-loop) methods for retracting anterior teeth in Angle Class I malocclusion.

  This interventional trial enrolled a total of 42 patients, dividing them into two age groups: group 1. Using the friction (sliding mechanism-elastomeric chains) and group 2. Using the frictionless (T-loop). For each patient, cone beam computed tomography (CBCT) was taken before and after retraction to evaluate alveolar changes. Study variables measured on CBCT. The palatal plane (PP) represents the magnetic connection between the PNS (posterior nasal spine) and the ANS (anterior nasal spine), V: a vertical reference line perpendicular to the ANS-PNS line, H: a vertical reference line parallel to the ANS-PNS line. Four lines perpendicular to the V line (L0, L1, L2, L3, 2 mm apart). Line L0 passes through the cementoenamel junction (CEJ) on the buccal side. Measure the alveolar bone thickness at 3 positions (S1, S2, S3, lingual, and buccal) at T1 and T2.

  6 months after enrollment

Study Arms (2)

Group 1. Using the friction

EXPERIMENTAL

Procedure: This interventional trial enrolled a total of 42 patients, dividing them into two age groups: group 1. Using the friction and group 2. Using the frictionless

Group 2. Using the frictionless

EXPERIMENTAL

Procedure: This interventional trial enrolled a total of 42 patients, dividing them into two age groups: group 1. Using the friction and group 2. Using the frictionless

Interventions

This interventional trial enrolled a total of 42 patients, dividing them into two age groups: group 1. Using the friction and group 2. Using the frictionless PROCEDURE

Cone beam computed tomography (CBCT) was conducted before and after retraction to evaluate alveolar changes and speed.

Group 1. Using the friction; Group 2. Using the frictionless

Eligibility Criteria

• Age: 16 Years+
• Sex: all
• Healthy Volunteers: Yes
• Age Groups: Child (0-17), Adult (18-64), Older Adult (65+)

You may qualify if:

• Angle class I malocclusion on one or both sides
• Without any previous orthodontic treatment
• Indications for fixed appliances, premolar extraction to create space during treatment
• Consented to participate in the study

You may not qualify if:

• History of craniofacial traumas, anomalies, congenital defects, or systemic diseases related to osteogenic metabolisms, e.g. diabetes mellitus, kidney diseases, osseous diseases
• Patients took anticoagulant drugs that affected bone metabolism (eg., for example, heparin, warfarin, NSAIDs, cyclosporine, glucocorticoids, medroxyprogesterone acetate, etc.)
• Mini screw, and hook failure

Sponsors & Collaborators

• Can Tho University of Medicine and Pharmacy: lead

Study Sites (1)

Can Tho University of Medicine and Pharmacy

Can Tho, Can Tho City, 90000, Vietnam

Location

Related Publications (1)

• Vazquez E. Saquinavir plus ritonavir reduce viral load by 99.9 percent. Posit Aware. 1996 Nov-Dec;7(6):8-9.

  PMID: 11363983 BACKGROUND

Related Links

• Related Info

MeSH Terms

Conditions

Malocclusion, Angle Class I; Alveolar Bone Loss

Interventions

Population Groups

Condition Hierarchy (Ancestors)

Malocclusion; Tooth Diseases; Stomatognathic Diseases; Bone Resorption; Bone Diseases; Musculoskeletal Diseases; Periodontal Atrophy; Periodontal Diseases; Mouth Diseases

Intervention Hierarchy (Ancestors)

Demography; Population Characteristics

Study Design

• Study Type: interventional
• Phase: not applicable
• Allocation: RANDOMIZED
• Masking: NONE
• Purpose: TREATMENT
• Intervention Model: PARALLEL
• Sponsor Type: OTHER
• Responsible Party: PRINCIPAL INVESTIGATOR
• PI Title: Faculty Odonto-Stomatology

Study Record Dates

• First Submitted: October 15, 2024
• First Posted: April 15, 2025
• Study Start: August 1, 2022
• Primary Completion: August 1, 2024
• Study Completion: August 1, 2024
• Last Updated: April 15, 2025

Record last verified: 2024-10

Data Sharing

• IPD Sharing: Will not share

Locations

VN (1)