EVALUATION OF TREATMENT CHANGES IN CLASS II DIVISION 1 MALOCCLUSION DURING EN MASSE RETRACTION OF UPPER ANTERIOR TEETH USING MINI IMPLANTS PLACED AT INFRAZYGOMATIC CREST AND INTERRADICULAR SITES A RANDOMIZED CLINICAL TRIAL.

Recruiting now · Not applicable

Conditions studied: CLASS II DIVISION 1 MALOCCLUSION

In brief

Rationale: Class II Division 1 malocclusion is characterized by upper anterior teeth protrusion resulting in upper lip protrusion and convex facial profile, which are considered esthetically unfavorable. Treatment of class II malocclusion due to maxillary protrusion can be done with bilateral maxillary first premolar extraction followed by en-masse retraction of upper anterior teeth using mini-implants placed at infrazygomatic or interradicular sites. Aims and Objectives: To evaluate the treatment changes achieved in class II division 1 malocclusion during en- masse retraction of upper anterior teeth using mini-implants placed at infrazygomatic crest versus interradicular sites. To compare patients' and orthodontist's perceptions of treatment being done in both the groups. Method of study: Treatment will be initiated by bilateral maxillary 1st premolar extraction followed by bonding 0.022" slot MBT preadjusted edgewise appliance. Maxillary arch will be stabilized with the help of 0.019"×0.025" stainless steel wire and then randomized allocation of the patients into 2 groups-G1 and G2 will be done. G1 will receive infrazygomatic crest mini-implants bilaterally and G2 will receive bilateral interradicular mini-implants. Hooks will be soldered on archwire used for stabilizing dentition. Ni-Ti closed coil spring will be used to apply force.

Key facts

Study ID

NCT07405905

Run by

Postgraduate Institute of Dental Sciences Rohtak

People needed

30

Starts

2025-10-01

Expected to finish

2027-02-01

Last updated by the study team

2026-02-12

Who can join

Age: 18 and older, up to 30. Sex: any. Healthy volunteers: accepted.

You may qualify if…

• Non growing patients
• Bilateral Class II molar relationship at pre-treatment.
• All permanent teeth upto the second molars should be present.
• No or minor crowding in the maxillary arch.
• Horizontal to average growth pattern.

You may not qualify if…

• Subjects with a history of fixed orthodontic treatment.
• Crossbite
• Vertical growth pattern
• Any systemic disease affecting bone and general growth
• Poor oral hygiene
• Cleft patients
• Patients who fail to follow up or undergo complete treatment

Where it is running

• Post Graduate Institute of Dental Sciences, Rohtak, Haryana 124001 — Rohtak, Haryana, India (enrolling)

Full record on ClinicalTrials.gov

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