Bimaxillary Protrusion
Conditions
Keywords
En-masse retraction, Rate of tooth movement, Low Level Laser Therapy (LLLT), 3D
Brief summary
There is scarcity in the literature regrading the effect of Low Level Laser Therapy (LLLT) on the rate of en-masse retraction. This study aims to investigate whether LLLT would affect the rate of en-masse retraction in females having bimaxillary dento-alveolar protrusion.
Detailed description
Individuals having bimaxillary dentoalveolar protrusion are characterized by proclined upper and lower incisors and increased procumbency of the lips thus suffering from poor facial esthetics. The conventional management of these patients is the extraction of the first premolars and retraction of the anterior teeth. One of the treatment techniques is in the form of canine retraction followed by four incisors retraction. This conventional method takes tedious work and tremendous time, thus affecting the patients' satisfaction adversely. The other technique is retraction of the whole set of anterior teeth as one unit (Canine and incisors), which is referred to as En-Masse retraction. Enhancing the rate of orthodontic tooth movement has always been a supreme goal of orthodontic research hoping to raise the level of care delivered to patients, hence, increase patients' satisfaction. One of the proposed modalities of increasing the rate of tooth movement is Low Level Laser Therapy (LLLT). Thus, the aim of the current consideration was to evaluate the impact of LLLT on the rate of en-masse retraction in adult females having bimaxillary dentoalveolar protrusion.
Interventions
PROCEDUREEn- masse retraction and LLLT
Retraction will start on a 0.019x0.025 Stainless steel wire using NiTi closed coils (force applied will be 200 g per side) extending between the crimpable hooks and the TADs. LLLT will be applied on days 0,3,7,14 from extraction then repeated biweekly till the end of retraction.
PROCEDUREEn- masse retraction without LLLT
Retraction will start on a 0.019x0.025 Stainless steel wire using NiTi closed coils (force applied will be 200 g per side) extending between the crimpable hooks and the TADs.
Sponsors
Cairo University
Study design
Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
SINGLE (Outcomes Assessor)
Masking description
Due to the nature of the intervention neither the operator nor the patients could be blinded. The assessors will be blinded from the data to be investigated he will just measure the data needed without knowing the purpose of the study, and without knowing which records belong to which group. Two assessors will carry out the the analysis of the study, blindly and independently.
Eligibility
Sex/Gender
FEMALE
Age
18 Years to 30 Years
Healthy volunteers
Yes
Inclusion criteria
* Adult females * Patients having bimaxillary dento- alveolar protrusion and Class I Molar relation * Cases requiring maximum anchorage during retraction. * Good general and oral health
Exclusion criteria
* 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 (Other than 1st premolars). * Patients with any parafunctional habits (i.e. Bruxism, tongue thrusting, mouth breathing, etc…). * Patients with previous orthodontic treatment * Pregnant females
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Rate of en-masse retraction | From date of first premolars' extraction until the date of anterior teeth retraction, assessed up to an average of 1 year | The antero-posterior movement of anterior teeth will be assessed by measuring the digitilized study models taken of the patients monthly (measured in mm) |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Anchorage (Loss/ Gain) | From date of first premolars' extraction until the date of anterior teeth retraction, assessed up to an average of 1 year | By comparing linear and angular changes in the first molars in relation to reference planes |
| Anterior teeth's root resorption | From date of first premolars' extraction until the date of anterior teeth retraction, assessed up to an average of 1 year | Assessed via comparing the pre & post- retraction CBCTs using Lavender & Malmgren Grading system |
| Anterior teeth Tip and Torque | From date of first premolars' extraction until the date of anterior teeth retraction, assessed up to an average of 1 year | By comparing angular changes in the teeth's tip and torque in relation to reference planes |
| First molars' rotation | From date of first premolars' extraction until the date of anterior teeth retraction, assessed up to an average of 1 year | 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 |
| Pain Associated | From date of first premolars' extraction until the date of anterior teeth retraction, assessed up to an average of 1 year | Each patient will fill a questionnaire regarding his treatment experience in a VAS scoring from 0-10 |
Countries
Egypt
Outcome results
None listed