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

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.

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

All collected IPD sharing statement

Data will be available after publication

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