Non-surgical correction of an adult Class II high-angle with occlusal plane cant by four compromised permanent first molars extraction, preadjusted lingual appliance and miniscrews: A case report.

This case report describes a complex full-step asymmetrical Class II division 1 high-angle in an adult patient treated by extraction of compromised first molars with a preadjusted lingual appliance. Since the patient presented severe sagittal and vertical discrepancies combined with an Izard orthofrontal profile with upper lip protrusion, an extraction camouflage was performed with the twofold aim of obtaining ideal occlusal relationship and profile improvement, correcting occlusal plane cant by selective intrusion with interradicular miniscrews. Appropriate biomechanical strategies, including extraction choice and anchorage control during space closure, were needed to achieve the planned results.

Posterior crossbite with mandibular asymmetry treated with lingual appliances, maxillary skeletal expanders, and alveolar bone miniscrews.

Posterior crossbite and mandibular asymmetry affect esthetics and function. We report treatment of 3 patients with posterior crossbite with mandibular asymmetry but different anteroposterior and vertical characteristics. Treatment methods included maxillary skeletal expander, miniscrews, and lingual appliances.

Lingual orthodontics in the new era treatment according to criteria for occlusion and aesthetics.

There has been remarkable progress in the field of orthodontics with the advent of CAD/CAM technology since the beginning of the 21st century. In lingual orthodontics, brackets designed and manufactured with a CAD/CAM system [1] are now available to produce more efficient tooth movement with reduced frictional resistance. The use of implant anchors for absolute anchorage has eliminated the need for excessive tipping of the molars with anchorage bends, which compromises periodontal health, as well as the need for application of heavy extraoral forces, thus providing more reasonable treatment options for both the patient and orthodontist.