The Use of a Modified Dentoalveolar Distractor to Retract Maxillary Canines

Damascus University

Status: Completed

Conditions: Orthodontic Patients Requiring Canine Retraction

Treatments: Device: modified dentoalveolar distractor

Study type: Interventional

Funder types: Other

Identifiers

NCT02332421

UDDS-OMFS-02-2015

Details and patient eligibility

About

In this study, two distractors will be used to retract maxillary canines into the extraction sites. The first distractor is a modified Hyrax expander with two arms soldered to two bands connected to a canine and a molar; and the second one is a similar to the first one but with the addition of a third arm.

The purpose of this investigation is to compare the two distractors in terms of: final position of the canine, canine pulp vitality, molars' anchorage, patient's acceptance to the appliance.

Full description

The retraction of the canines is one of the longest and most important stages in the orthodontic treatment of cases that require premolars extraction. The retraction phase of the canines into an extraction site with conventional treatment method usually lasts about 4 to 6 months under normal circumstances. The use of dentoalveolar distraction (DAD) technique has been considered a very important step in this field. It has been shown by early case reports that this technique can be employed to retract canines within 10 to 14 days.

Although DAD is thought to accelerate tooth movement during canine retraction, a significant amount of tipping (distal tilting) was observed in many case reports. So in this study, there is an intention to apply a modified DAD device on one side of the mouth and to compare it with the conventional one applied on the opposite side of the mouth in each participating patient.

Enrollment: 8 patients

Sex: All

Ages: 18 to 25 years old

Volunteers: No Healthy Volunteers

Inclusion criteria

• Indication for extraction of upper first premolar and conducting canine retraction
• Good oral hygiene

Exclusion criteria

• Buccal or palatal inclination of the canines
• Mesial or distal inclination of the canines
• Contraindication to minor surgery
• Previous orthodontic or surgical treatment
• Root canal treatment to the canines
• Malformation of the canines

Trial design

Primary purpose: Treatment

Allocation: Randomized

Interventional model: Single Group Assignment

Masking: None (Open label)

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8 participants in 2 patient groups

modified dentoalveolar distractor

Experimental group

Description:

Canine retraction will be accomplished using a modified dentoalveolar distractor

Treatment:

Device: modified dentoalveolar distractor

conventional dentoalveolar distractor

No Intervention group

Description:

Canine retraction will be accomplished using a conventional dentoalveolar distractor