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.
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.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
SINGLE
Enrollment
32
Retraction will start on a 0.019"x0.025" 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.
Retraction will start on a 0.019"x0.025" Stainless steel wire using NiTi closed coils (force applied will be 200 g per side) extending between the crimpable hooks and the TADs.
Cairo University
Cairo, Egypt
Rate of en-masse retraction
The antero-posterior movement of anterior teeth will be assessed by measuring the digitilized study models taken of the patients monthly (measured in mm)
Time frame: From date of first premolars' extraction until the date of anterior teeth retraction, assessed up to an average of 1 year
Anterior teeth's root resorption
Assessed via comparing the pre \& post- retraction CBCTs using Lavender \& Malmgren Grading system
Time frame: From date of first premolars' extraction until the date of anterior teeth retraction, assessed up to an average of 1 year
Anterior teeth Tip and Torque
By comparing angular changes in the teeth's tip and torque in relation to reference planes
Time frame: From date of first premolars' extraction until the date of anterior teeth retraction, assessed up to an average of 1 year
Anchorage (Loss/ Gain)
By comparing linear and angular changes in the first molars in relation to reference planes
Time frame: From date of first premolars' extraction until the date of anterior teeth retraction, assessed up to an average of 1 year
First molars' rotation
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
Time frame: From date of first premolars' extraction until the date of anterior teeth retraction, assessed up to an average of 1 year
Pain Associated
Each patient will fill a questionnaire regarding his treatment experience in a VAS scoring from 0-10
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Time frame: From date of first premolars' extraction until the date of anterior teeth retraction, assessed up to an average of 1 year