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Bracket Positioning Techniques and Quality of Orthodontic Finishing

NCT07708363 · Status: COMPLETED · Phase: NA · Type: INTERVENTIONAL · Enrollment: 39

Last updated 2026-07-16

No results posted yet for this study

Summary

This three-arm randomized clinical trial compares three orthodontic bracket positioning techniques - Smile Arc Protection (SAP), Smile Arc and Marginal Ridge Approach (SAMRA), and the McLaughlin-Bennett-Trevisi (MBT) bracket placement chart (control) - in young patients with Angle Class I malocclusion and mild-to-moderate crowding treated non-extraction. The primary aim is to determine which technique yields the highest quality of orthodontic finishing, measured with the American Board of Orthodontics Objective Grading System (ABO-OGS). Secondary aims compare anterior tooth tip and torque (assessed by CBCT) and mini-esthetic smile parameters (gingival display, incisal display, buccal corridor, and smile arc, assessed on standardized posed-smile photographs) among the three techniques.

Conditions

  • Malocclusion, Angle Class I
  • Dental Crowding

Interventions

PROCEDURE

Smile Arc Protection (SAP) bracket positioning

Bracket positioning by the Smile Arc Protection technique (anterior brackets placed relatively more gingival, referenced to canine crown height).

PROCEDURE

Smile Arc and Marginal Ridge Approach (SAMRA) bracket positioning; Procedure

Bracket positioning by the Smile Arc and Marginal Ridge Approach (digital workflow referencing the marginal-ridge line and facial axis).

PROCEDURE

McLaughlin-Bennett-Trevisi (MBT) chart bracket positioning

Bracket positioning by the McLaughlin-Bennett-Trevisi bracket placement chart (bracket-to-incisal-edge distances from the standardized chart).

Sponsors & Collaborators

  • Future University in Egypt

    lead OTHER

Study Design

Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
SINGLE
Model
PARALLEL

Eligibility

Min Age
14 Years
Max Age
25 Years
Sex
ALL
Healthy Volunteers
No

Timeline & Regulatory

Start
2024-07-01
Primary Completion
2026-07-01
Completion
2026-07-01

Countries

  • Egypt

Study Locations

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Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT07708363 on ClinicalTrials.gov