Efficiency of Rigid Versus Non-rigid Indirect Anchorage During Canine Retraction: A Split Mouth Randomized Study

Not Applicable

Completed

• Conditions: Orthodontic Appliance Complication
• Interventions: Procedure: rigid indirect anchorage connection; Procedure: non rigid indirect anchorage connection

• Registration Number: NCT06554769
• Lead Sponsor: Cairo University

Brief Summary

Indirect anchorage (In-A) has been broadly used for anchorage reinforcement during anterior segment retraction. The study compared between the efficacy of rigid vs non-rigid connections of In-A i during upper canine retraction in dentoalveolar protrusion cases

Detailed Description

Fifteen female patients with dentoalveolar protrusion were included in this study. A miniscrew was inserted following levelling and alignment between the upper first molar and second premolar of both sides. Randomization was applied before first premolar extraction where one side of the arch received a rigid indirect anchorage connection (Group I) of 0.019 x 0.025-inch stainless steel (St.St) archwire from the miniscrew to the auxiliary tube of the upper first molar band, and the other side received a non-rigid indirect anchorage connection (Group II) of 0.014-inch St.St ligature ligating the upper second premolar to the miniscrew. Canine retraction was performed on 0.017 x 0.025-inch St.St archwire applying 1.5 N retraction force. The duration of the study was 7 months. Data was collected from digitized models where anchorage loss of the upper first molar relative to the frontal plane and the vertical position of the upper second premolar were measured

Study Timeline

• Study Start: 2023-07-02
• Primary Completion: 2024-02-01
• Study First Submitted: 2024-02-07
• Study Completion: 2024-06-02
• Status Verified: 2024-08
• Study First Submitted QC: 2024-08-14
• Last Update Submitted: 2024-08-14
• Study First Posted: 2024-08-15
• Last Update Posted: 2024-08-15

Recruitment & Eligibility

• Status: COMPLETED
• Sex: Female
• Target Recruitment: 15

Inclusion Criteria

Adult females Bimaxillary protrusion requiring first premolars extractions Full permanent dentition Good oral hygiene

Exclusion Criteria

History of previous orthodontic treatment Abnormalities in teeth size and/or shape Vertical, transverse, or anteroposterior skeletal discrepancies Anti-inflammatory medication

Study & Design

• Study Type: INTERVENTIONAL
• Study Design: PARALLEL

Arm && Interventions

Group	Intervention	Description
Rigid Connection	rigid indirect anchorage connection	rigid wire 19 x 25 inch stst wire was place between upper first molar and the miniscrew placed between the first molar and second premolar
Non-Rigid connection	non rigid indirect anchorage connection	side received a non-rigid 0.014-inch St.St ligature ligating the upper second premolar to the miniscrew.

Primary Outcome Measures

Name	Time	Method
anchorage loss	4 month	amount of anchorage loss of the upper first molar during canine retraction using digital model in mm.

Secondary Outcome Measures

Name	Time	Method
vertical position of the upper second premolar	4 month	The secondary outcome was to assess the change in the vertical position of the upper second premolar following canine retraction using indirect anchorage using digital models in mm.

Trial Locations

Locations (1)

Cairo University; 🇪🇬 Cairo, Egypt