Evaluation of Incisors' Position Following Anterior Segment Retraction

Future University in Egypt

Status: Completed

Conditions: Bimaxillary Protrusion

Treatments: Other: Power chain used for anterior segment retraction; Other: T-loop fabricated to perform anterior segment retraction

Study type: Interventional

Funder types: Other

Identifiers

NCT04878939

FUE.REC 11/10-2018

Details and patient eligibility

About

There's scarcity in literature concerning the issue of anterior segment retraction technique and its effect on anterior teeth position. Therefore, a randomized clinical trial has been chosen to investigate this issue, aiming to support clinicians with the best guidelines for anterior segment retraction.

Full description

Thirty females with bimaxillary protrusion were randomly allocated into two groups. In one group, anterior segment retraction was commenced using an elastomeric chain rendering 160 g/side extending between mini-screw implant and a hook crimped on 0.017- by 0.025-inch stainless steel wire distal to the lateral incisor. In the other group, anterior segment retraction was done using closing T-loops fabricated from 0.017- by 0.025-inch titanium molybdenum alloy (TMA) wire rendering comparable retraction force. Three-dimensional analysis of incisors' buccolingual (BL)- torque, mesiodistal (MD)- tip, vertical position changes and root resorption were assessed using cone beam computed tomography scans.

Enrollment: 30 patients

Sex: Female

Ages: 13 to 25 years old

Volunteers: Accepts Healthy Volunteers

Inclusion criteria

• Female patients (Age 13- 25 y)
• Class I molar relation (Angle's classification)
• Bimaxillary protrusion requiring extraction of four first premolars and maximum anchorage.
• full permanent dentition (except 3rd molars)
• Good general and oral health

Exclusion criteria

• Systemic disease or syndromes or on anti-inflammatory medication.
• Extracted or missing permanent teeth (other than 3rd molars)
• Badly decayed teeth (other than 1st premolars)
• Parafunctional habits
• History of previous orthodontics treatment

Trial design

Primary purpose: Other

Allocation: Randomized

Interventional model: Parallel Assignment

Masking: Single Blind

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30 participants in 2 patient groups

Anterior segment retraction using sliding mechanics (friction)

Experimental group

Description:

Power chain

Treatment:

Other: Power chain used for anterior segment retraction

Anterior segment retraction using segmental mechanics (frictionless)

Experimental group

Description:

T-loop

Treatment:

Other: T-loop fabricated to perform anterior segment retraction