Effect of Bilateral Distalization of Upper First Molars in a Group of Patients After Extraction of Maxillary Second Molars

Future University in Egypt

Status: Completed

Conditions: Class II Malocclusion

Treatments: Device: Intra-Oral Distalizing Device

Study type: Interventional

Funder types: Other

Identifiers

NCT05592977

FUE.REC(23)/11-2020

Details and patient eligibility

About

There is a scarcity in the current literature regarding such appliance and its effect on distalizing the first maxillary molar in absence of the second molar. Therefore, this study was made to evaluate the effect of bilateral distalization of upper first molars in a group of patients after extraction of maxillary second Molars using infra zygomatic mini implants.

Full description

The appliances available for distalization used to be mainly extraoral distalizing appliances which depended entirely on patient cooperation and compliance. Even after the emergence of intra-oral distalizing appliances they had adverse dentoalveolar effect such as anchorage loss and flaring of the upper anterior teeth. Thus, this study was made in order to evaluate the efficiency of our proposed appliance in the treatment of Class II patients while avoiding the adverse effects mentioned above.

Enrollment: 10 patients

Sex: Female

Ages: 16+ years old

Volunteers: Accepts Healthy Volunteers

Inclusion criteria

• Female Patients with cervical vertebra maturation index (CVMI) 5 & 6.
• From quarter unit to 3\4-unit class II molar relationship.
• An overjet of an average 6mm.
• Full Set of permanent dentition except for the maxillary second molar.
• Favorable path of eruption for the maxillary third molar.

Exclusion criteria

• Medically compromised Patients.
• Patients under long term medications.
• Patients having sever periodontal disease.
• CVMI 3 or less
• Full unit class II cases

Trial design

Primary purpose: Treatment

Allocation: N/A

Interventional model: Single Group Assignment

Masking: None (Open label)

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10 participants in 1 patient group

Intra-oral Distalizing Appliance

Experimental group

Description:

Two infra zygomatic mini-implants will be placed Bands will be cemented to upper first molars. The inner bow (1.2mm) is a modified version of the inner part of a conventional face bow. Two hooks were soldered onto the inner bow distal to the lateral incisor teeth regions, and U loop at 1st premolar region, and bends acting as mesial stop will be bent in front of the maxillary first molars. Orthodontic force 300 mg per side Will be delivered by Niti closed coil spring which is attached from infra zygomatic mini screw to the hook soldered to the wire framework.

Treatment:

Device: Intra-Oral Distalizing Device