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Case Report


Miniscrew-assisted mandibular molar distalization in a patient with skeletal class-III malocclusion: A clinical case report

Seyed Mohammadreza Safavi1Farnaz Younessian2Sarvraj Kohli3
1Department of Research Institude of Dental Sciences, Dentofacial Deformity Research Center, Iran, 2Department of Orthodontics, Shahid Beheshti University of Medical Sciences, Iran, 3Division of Dental Sciences, Jabalpur Hospital and Research Center, Jabalpur, MadhyaPradesh, India
Corresponding Author:

Farnaz Younessian

Department of Orthodontics, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
E-mail: safavimr@yahoo.com

Corresponding Author:

Farnaz Younessian

Department of Orthodontics, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
E-mail: safavimr@yahoo.com

DOI: 10.4103/2321-1407.115985 Facebook Twitter Google Linkedin

ABSTRACT


In nongrowing patients with mild skeletal Class-III malocclusion, premolar extraction or molar distalization in the lower arch can be done as a part of camouflage treatment. Temporary anchorage devices are widely used for this purpose because they do not produce undesirable reciprocal effects and do not depend on the patient’s cooperation. However, most reported cases in this regard have used interradicular miniscrews in the mandibular arch and these have a risk of failure as they can loosen due to collision with adjacent roots. This article showcases mandibular molar distalization utilizing miniscrews, inserted at the retromolar area to correct a Class-III problem. A 24-year-old girl with a mild skeletal Class-III malocclusion and dental Class-III molar and canine relationship bilaterally was referred for orthodontic treatment. The treatment plan included distalization of the lower molars bilaterally followed by full fixed appliance therapy, after third molar extractions. For the lower molar distalization, the miniscrews were inserted at the retromolar pad. At the end of 21 months, a Class-I molar and canine relationship, normal overjet and overbite were obtained. The average amount of distalization of mandibular first molar was 3.2 mm at the crown level. In conclusion, placing miniscrews at the retromolar pad area for lower molar distalization was found to be a simple and effective method for correcting anterior cross bite and mandibular anterior crowding or protrusion, without the need for patient compliance.
Keywords: Miniscrew, Class-III malocclusion, molar distalization, temporary anchorage device, retromolar area

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