Contributor

Assoc. Prof. M. Papadopoulos

Country –institution

School of Dentistry, Aristotle University of Thessaloniki, Greece

Title

Efficient orthodontic treatment of Class II malocclusion with miniscrew implants

Summary 

Treatment options of Class II malocclusion include among others extraoral headgears to distalize maxillary molars, or functional appliances to advance the mandible in a more forward position in growing patients. Orthodontic treatment of patients with Class II malocclusion, who show poor compliance with these conventional modalities, can be very challenging. Alternatively, noncompliance approaches can be used. With regard to maxillary molar distalization, both extraoral headgears and noncompliance distalization appliances present however several unwanted side effects, which diminish their clinical effectiveness. These side effects resulting from the applied biomechanics of each of these modalities vary between headgears and noncompliance distalization appliances, but they always accompany molar distalization including mainly distal tipping, rotations or extrusion of maxillary molars, as well as mesial movement of premolars and proclination of the maxillary anterior teeth.

This presentation describes the use of a miniscrew implant supported distalization system (MISDS) for the orthodontic treatment of Class II malocclusion. Initially, the MISDS is used to distalize the maxillary first molars. Following distalization, the same system after a slight chair-side intraoral modification provides the desired stationary anchorage for the subsequent anterior teeth retraction in conjunction with conventional full-fixed orthodontic appliances. Biomechanical considerations, clinical efficacy, advantages and potential complications of the presented treatment approach will be discussed.