Evaluation of the Rate of En-masse Retraction in Orthodontic Patients With Maxillary Protrusion
- Conditions
- Bimaxillary Protrusion
- Interventions
- Procedure: Power chain and Crimpable hook for En-Masse RetractionProcedure: T- Loop
- Registration Number
- NCT04902430
- Lead Sponsor
- Future University in Egypt
- Brief Summary
There's a scarcity in literature concerning en-masse retraction and its effect on the rate of tooth movement. The purpose of this study is to determine, In orthodontic patients with maxillary protrusion, which form of mechanics in en-masse retraction offers a faster rate of retraction; Friction or Frictionless Mechanics.
- Detailed Description
The en-masse technique can be done in one of two ways: through friction or frictionless mechanics. Both are viable options, but, ideally, we want to retract and complete the orthodontic treatment as quickly as possible, in order to decrease the negative effects that may occur during treatment. Which of these mechanics results in a decreased treatment time is still up for debate.
Recruitment & Eligibility
- Status
- COMPLETED
- Sex
- All
- Target Recruitment
- 30
- Adults and Adolescent patients (both genders)
- Age range (14-24)
- Patients with maxillary protrusion requiring first premolars extraction (Bimaxillary Protrusion or Class II division 1 cases).
- Patients with fully erupted permanent teeth (not necessarily including the third molar).
- Cases requiring maximum anchorage during retraction.
- Good general and oral health
- Patients suffering from any systemic diseases interfering with tooth movement.
- Patients with extracted or missing permanent teeth. (except for third molars).
- Patients with badly decayed teeth.
- Patients with any parafunctional habits (i.e. Bruxism, tongue thrusting, mouth breathing, etc...).
- Patients with previous orthodontic treatment
Study & Design
- Study Type
- INTERVENTIONAL
- Study Design
- PARALLEL
- Arm && Interventions
Group Intervention Description En-Masse Retraction using sliding mechanics (Friction) Power chain and Crimpable hook for En-Masse Retraction 6 anterior teeth (en-Masse) retracted using a crimpable hook distal to the upper lateral incisor and a power chain En-Masse Retraction using segmental mechanics (Frictionless) T- Loop 6 anterior teeth (en-Masse) retracted using a T- loop
- Primary Outcome Measures
Name Time Method Retraction Rate From pre to post retraction (an average of 6 - 8 months) The antero-posterior movement of anterior teeth and first molars will be assessed by measuring the digitilized study models taken of the patients monthly (measured in mm)
- Secondary Outcome Measures
Name Time Method Pain of intervention From pre to post retraction/intervention (an average of 6 - 8 months) Each patient will fill a questionnaire regarding his treatment experience in a VAS scoring from 1-10
Anchorage Loss From pre to post retraction (an average of 6 - 8 months) Digitilized dental models taken before and after the completion of retraction will be measured by identifying landmarks and reference lines and planes (measured in mm)
Molar Rotation From pre to post retraction (an average of 6 - 8 months) Study models that are taken pre and post retraction (then digitilized) will be used to assess the rotation of the maxillary first molars in relation to a reference line (measurement of the angles in degrees)
Anterior teeth torque, extrusion/intrusion From pre to post retraction (an average of 6 - 8 months) The principle investigator will examine pre and post lateral cephalometric radiographs in relation to lines and reference planes (measurements in degrees and mm)
Trial Locations
- Locations (1)
Future University in Egypt
🇪🇬New Cairo, Cairo, Egypt