Набор по приглашению NCT07645417

Maxillary Canine Retraction Using Stainless Steel and Titanium-molybdenum Alloy Wires in TAD-supported Segmental Mechanics

Без фазы С лечением Malocclusion Canine Retraction Orthodontics Tooth Movement Techniques

Ориентир для пациента и семьи

Простыми словами

Автоматическая сводка по структурированным данным реестра. Она помогает сориентироваться, но не заменяет официальный протокол или оценку врача.

Что изучают: В протоколе указаны: A titanium-molybdenum alloy reverse-closing loop, A stainless steel reverse closing loop.
Кому может быть актуально: Состояния в реестре: Malocclusion, Canine Retraction, Orthodontics, Tooth Movement Techniques. Базовые параметры: 15 мес. — 35 мес. · Все.
Что важно проверить: Возраст, диагноз и пол — только базовые ориентиры. Предыдущее лечение, анализы и другие обязательные условия указаны ниже в критериях участия.
Где проводится: Bangladesh
Следующий шаг: Сохраните исследование, покажите его лечащему врачу и уточните актуальный статус у исследовательского центра. Расходы, документы и поездка →

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Официальное название

Comparative Evaluation of Maxillary Canine Retraction Using Stainless Steel and Titanium-molybdenum Alloy Wires in TAD-supported Segmental Mechanics

Обзор

The goal of this randomized clinical study is to compare the effectiveness of stainless steel (SS) and titanium-molybdenum alloy (TMA) wires for maxillary canine retraction using TAD-supported segmental mechanics. The main question it aims to answer is: Which wire material, stainless steel or titanium-molybdenum alloy, provides better outcomes in maxillary canine retraction when used with TAD-supported segmental mechanics? Researchers will compare SS reverse-closing loops with TMA reverse-closing loops to evaluate differences in the rate of canine retraction and canine angulation changes during orthodontic space closure. Participants will: * Receive mini-implants/TADs on both sides of the maxillary arch. * Receive a stainless steel reverse-closing loop on one side and a TMA reverse-closing loop on the contralateral side. * Receive the same standardized force of 150 g on both sides. * Visit the clinic every 4 weeks for a total duration of 4 months. * Undergo OPG radiographs before retraction and after the 4-month study period to assess canine angulation.

Подробное описание

Background: Canine retraction is vital in orthodontic treatment, especially in first premolar extraction cases. Stainless steel (SS) and titanium-molybdenum alloy (TMA) wires are two most commonly used materials in segmental canine retraction with loop mechanics. Temporary anchorage devices (TADs), provide absolute anchorage.

Objective: To assess and compare maxillary canine retraction using SS and TMA wire in TAD-supported segmental mechanics.

Materials and Methods: After taking IRB approval, informed consent and assent a randomized clinical study will be conducted with 16 participants aged 15 to 35 years who require maxillary 1st premolar extraction on both sides to alleviate crowding or protrusion at Orthodontics department in Bangladesh Medical University (BMU). Each participant will receive a TAD on the same anatomic location with reverse closing loop (RCL) of SS wire 0.016 × 0.022" on one side and RCL of TMA wire 0.016 × 0.022" on contralateral side. Same 150 g force will be standardized with Dontrix gauge for both side. Rate of canine retraction will be measured intraorally with a digital slide caliper at four-week intervals for a total of four months. Canine angulation will be measured in OPG before retraction and after four months study period.

Statistical Analysis Plan: Data normality will be tested to select parametric or non-parametric analyses with P value \<0.05 as significant. All the analyses will be performed using SPSS (version 30.0, IBM, New York, USA).

Expected outcome: TMA wire other than SS wire may be more effective in maxillary canine retraction from TAD-supported segmental mechanics providing scientific rationale for material choice.

Вмешательства

Процедура A titanium-molybdenum alloy reverse-closing loop
A titanium-molybdenum alloy reverse-closing loop will be placed on one side of the maxillary arch, and a stainless steel reverse-closing loop will be placed on the contralateral side of the maxillary arch and activated with a 150 g force to retract the canine.
Процедура A stainless steel reverse closing loop
A titanium-molybdenum alloy reverse-closing loop will be placed on one side of the maxillary arch, and a stainless steel reverse-closing loop will be placed on the contralateral side of the maxillary arch and activated with the same 150 g force for canine retraction.

Первичные конечные точки

Comparison of the rate of maxillary canine retraction using stainless steel and TMA reverse-closing loops in TAD-supported segmental mechanics over 4 months. [Срок оценки: 4 months]

Критерии участия

Критерии включения

Participants aged 15 to 35 years.
Both male and female participants.
Patients with all permanent teeth present, excluding third molars.
Patients requiring extraction of both maxillary first premolars
Patients with Class I or Class II molar relationship requiring maximum anchorage.
Patients already undergoing fixed orthodontic treatment with a 0.018-inch Roth preadjusted appliance system.
Maxillary canines aligned, symmetrical, and upright before the study.
Patients in the leveling and alignment stage before canine retraction.