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Completed

NCT Number: NCT06554769

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

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

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Key information

Conditions

Orthodontic Appliance Complication

Age range

13 year–23 year

Sex eligibility

Female

Study type

Interventional

Phase

Not applicable

Primary location

Cairo University

Cairo, Egypt

About this study

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

Who can participate

Healthy volunteers accepted: Yes

Only the study team can determine whether someone qualifies for participation.

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

Treatment and study plan

non rigid indirect anchorage connection

Procedure

a nonrigid connection is placed between the miniscrews and the second premolar to prevent mesial tooth movement.

rigid indirect anchorage connection

Procedure

a rigid connection is placed between the miniscrews and the first molar to prevent mesial tooth movement.

Primary outcomes

  1. anchorage loss

    Time frame: 4 month

    amount of anchorage loss of the upper first molar during canine retraction using digital model in mm.

Secondary outcomes

  1. vertical position of the upper second premolar

    Time frame: 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.

Sponsors and collaborators

Lead sponsor

Cairo University

Other

Registry information

Important dates

Study start
2023
Primary completion
2024
Study completion
2024
First posted
Aug 15, 2024
Registry last updated
Aug 15, 2024

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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