Bimaxillary Protrusion
Conditions
Keywords
Mini-esthetics, Macro-esthetics, En-masse Retraction, Two step retraction, Extra-oral photographs, Adobe photoshop CC 2017 software, Lateral Cephalometric Radiographs
Brief summary
There's a scarcity in literature concerning mini-esthetics specially maxillary gingival display changes following en-masse retraction and two-step retraction. The purpose of this study is to determine, In orthodontic patients with maxillary protrusion, which technique of retraction will result in better esthetics upon smiling following en-masse retraction or two step retraction mechanics.
Detailed description
This study will be conducted in order to evaluate which technique of retraction will provide better outcome regarding mini and macro esthetics. In terms of mini esthetics, posed smiles will be analyzed to evaluate maxillary gingival display, as well as the analysis of smile arc, buccal corridor, inter-labial gap. In terms of macro esthetics, frontal and profile poses will be assessed to evaluate the nasolabial angle, mentolabial angle and upper and lower lip protrusion/ E- plane.
Interventions
PROCEDUREEn-masse retraction
Power chain and Crimpable hook for En-Masse Retraction Retraction will start on a 0.017x0.025 Stainless steel wire using elastomeric chain (force applied will be 200 g per side) extending between the crimpable hooks and the miniscrew
PROCEDURETwo step Retraction
Retraction of canine started on a 0.017x0.025 Stainless steel wire using elastomeric chain (force applied will be 150 g per side)followed by anterior teeth retraction on 0.017x0.025 Stainless steel wire using elastomeric chain (force applied will be 160 g per side) extending between the crimpable hooks and the mini-screw.
Sponsors
Future University in Egypt
Study design
Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
SINGLE (Outcomes Assessor)
Masking description
Only the outcome assessors will be blind. The patients name will be sealed from pre and post photographs and cephalometric radiographs. Then two assessors will carry out, blindly and independently, the measurements and analysis of the study
Eligibility
Sex/Gender
ALL
Age
16 Years to 24 Years
Healthy volunteers
Yes
Inclusion criteria
* Adults and Adolescent patients (both genders) * Age range (16-24) * 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
Exclusion criteria
* Patients suffering from any neural disorders or systemic diseases interfering with tooth movement. * Patients with soft tissue problems such as cleft-palate patients * 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.
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Mini-esthetics including | From pre to post retraction (an average of 6 - 8 months)] | Evaluation of (maxillary gingival display, Smile arc, buccal corridor) from social smile photograph Evaluation of (inter-labial gap) from At Rest photograph All primary outcome characteristics will be measured before and after retraction (measured Linear/ horizontal/ vertical in millimeters) by Adobe Photoshop CC 2017 software. |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Macro-esthetics evaluation of profile photograph including | upto 6 months from the start of orthodontic treatment. | 1\. Nasolabial angle. 2. Mentolabial angle. 3. Incisors Inclination (Angular measurement in degrees). 4. Upper lip protrusion/ E- plane. 5. Lower lip protrusion/ E- plane. (Linear measurement in millimeters.) Cephalometric radiographs and Adobe Photoshop CC 2017 software |
Countries
Egypt
Outcome results
None listed