The Effect of Different Force Magnitudes on Maxillary Posterior Segment Intrusion

Cairo University20 enrolled

Overview

A Randomized clinical trial comparing two different force magnitudes in maxillary posterior segment intrusion in adult patients with skeletal open bite malocclusion

This randomized controlled trial is aiming to study the effect of the different force magnitude on maxillary posterior segment intrusion. Two groups are going to be allocated and the amount and rate of intrusion will be measured and compared.

Study Type

INTERVENTIONAL

Allocation

RANDOMIZED

Purpose

TREATMENT

Masking

DOUBLE

Enrollment

Conditions

Orthodontics

Interventions

Intrusion by 400 gDEVICE

using miniscrews and coil springs to apply the intrusive force on maxillary posterior segment intrusion.

Eligibility

Sex: ALLMin age: 15 YearsMax age: 25 YearsHealthy volunteers:

Medical Language ↔ Plain English

Inclusion Criteria: * Adult patients with an age range from 17 to 25. * Skeletal open bite. * Dental open bite that is due to overgrowth of maxillary posterior segment as seen clinically and that can be corrected without surgical intervention (a minimum of 3 mm and a maximum of 8 mm). * Skeletal class I or mild to moderate skeletal class II that enables camouflage treatment. * Normal incisor show on smiling (that makes the case indicated for molar intrusion and not for incisor extrusion). * Full set of maxillary posterior dentition (first and second premolars, first molars at least). * No previous orthodontic treatment. Exclusion Criteria: * Medically compromised patients. * Patients suffering from any congenital or hereditary diseases. * Smoking or any systemic diseases. * Chronic use of any medications including antibiotics, phenytoin, cyclosporin, anti-inflammatory drugs, systemic corticosteroids, and calcium channel blockers.

Locations (1)

Faculty of Dentistry

Cairo, Egypt

Outcomes

Primary Outcomes

Amount of intrusion

The amount the upper posterior teeth have been intruded.

Time frame: 6 months

Rate of bite closure

The rate by which the open bite closes as a result of posterior segment intrusion

Time frame: 6 months

Secondary Outcomes

Average rate of intrusion

The amount of intrusion divided by the duration of intrusion

Time frame: 6 months

Root resorption

The amount of root resorption as a result of the intrusive force

Time frame: 6 months

Tipping

The amount of mesiodistal and buccolingual tipping of posterior teeth

Time frame: 6 months

Data from ClinicalTrials.gov

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