Bimaxillary Protrusion
Conditions
Keywords
En-masse retraction, two step retraction, friction, retraction time, Dental models
Brief summary
Brief summary: there's a scarcity in literature concerning time needed to retract anterior segment following premolars extraction. the purpose of this study is to determine, in orthodontic patients with maxillary protrusion, which form of technique of retraction offers a faster treatment duration of retraction : en-masse or two step techniques
Detailed description
Anterior segment retraction can be done in one of two ways: through En masse or two step techniques. Both are viable options, but, ideally, the investigator wanted 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 techniques results in a decreased treatment time is still up for debate.
Interventions
PROCEDUREEn masse retraction
Retraction stated on a 0.017''x 0.025'' Stainless steel wire using elastomeric chain ( force applied 200 g per side) extending between the crimpable hooks and the mini-screw.
PROCEDURETwo-Step retraction
Retraction of canine started on a 0.017''x0.025'' Stainless steel wire using elastomeric chain ( force applied 150 g per side) followed by anterior teeth retraction on 0.017''x0.025'' Stainless steel wire using elastomeric chain ( force applied 160 g per side) extending between 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
single ( Outcomes Assessor) Only the outcome assessors will be blind. The patients name will be sealed from pre and post radiographs and study models. Then two assessors will carry out, blindly and independently, the measurements and analysis of the study
Eligibility
Sex/Gender
ALL
Age
14 Years to 24 Years
Healthy volunteers
Yes
Inclusion criteria
* Adults and adolescent patients ( both gender) * Age range (14- 24) * patient 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 required 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. * 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 |
|---|---|---|
| Time to close extraction space | from pre to post retraction ( an average of 10 - 12 months) | the antero-posterior movement of anterior teeth are assessed by monthly taken models and patient record sheets |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Anchorage loss | From pre to post retraction ( an average of 10- 12 months) | Digitalized dental models taken before and after completion of retraction will be measured by identifying landmarks and reference lines and planes ( measured in mm) |
| pain of intervention | From pre to post retraction ( an average of 10 - 12 months) | Each patient was informed to fill a questionnaire regarding treatment experience in Visual analogue scale scoring from (0 -10) 0 means no pain and 10 means severe pain |
Countries
Egypt
Outcome results
None listed