Evaluation of adolescent and adult patients treated with the Carriere Motion Class III appliance followed by fixed appliances

Correction of Class III Malocclusion Treated with Carriere® Motion™

Class III malocclusion needs complex orthodontic treatment. This case report describes a 16-year-old male patient with skeletal class III malocclusion with a negative overjet and overbite. Upper incisors were proclined with the accentuated curve of Wilson. Treatment has changed the functional curve of Wilson that has improved functional dynamic occlusion. The patient was treated using a Carriere® Motion™ Class III (CM3) and SLX 3D Brackets system. After a 25-month treatment, the patient reached class I molars and canines relationships on both sides with good facial aesthetics and good functional occlusion. The result was also satisfactory for the patient. A one-year follow-up confirmed that the outcome was stable.

Retrospective investigation of the 3D effects of the Carriere Motion 3D appliance using model and cephalometric superimposition

OBJECTIVES

Carriere Motion 3D™ appliance (CMA) represents a method for molar distalization and correction of class II malocclusion. The aim was to investigate the 3D effects of the CMA by superimposing digital models and cephalometric X-rays.

MATERIALS AND METHODS

We retrospectively examined 16 patients treated with CMA in combination with class II elastics. We compared digitized models and cephalometric X-rays of records taken before therapy and after the removal of CMA. The records were superimposed to assess the skeletal and dentoalveolar changes. The results of the cephalometric X-ray analysis were compared to an untreated age- and gender-matched sample.

RESULTS

Class II occlusion was corrected after 11.85 ± 4.70 months by 3.45 ± 2.33 mm. The average distalization of the upper first molars was 0.96 ± 0.80 mm. The analysis of the cephalometric X-rays confirmed a distalization of the upper first molars with distal tipping and revealed a mesialization of the lower first molars of 1.91 ± 1.72 mm. Importantly, CMA resulted in a mild correction of the skeletal class II relationship (ANB: - 0.71 ± 0.77°; Wits: - 1.99 ± 1.74 mm) and a protrusion of the lower incisors (2.94 ± 2.52°). Compared to the untreated control group, there was significant distalization of the upper first molars and canines with mesialization and extrusion of the lower first molars.

CONCLUSION AND CLINICAL RELEVANCE

CMA is an efficient method for treating class II malocclusions. However, the class II correction is only partially caused by a distalization of the upper molars.

The Practitioner’s Eye: The Ricketts Technique Elements in Non-Extraction Treatment Camouflaging Skeletal Class III with Bite Asymmetry—A Case Series Presentation

The study presents four cases of camouflage treatment of skeletal Class III with occlusal asymmetry in adult patients. Cephalometric analysis was performed using two different reference lines, S-N and FH. The treatment was carried out without the use of additional fixed appliances, no extraoral elastics for maxillary protection, and no extraction of teeth in the mandible. In addition to the characteristic elements and archwires taken from the Ricketts technique, NiTi, TMA, Wilcock archwires, Class III asymmetric intraoral elastic and criss-cross as well as individualized biomechanical systems were used. It has been proven that mild and moderate skeletal Class III with occlusal asymmetry can be treated with orthodontic camouflage, without additional fixed appliances for expansion or protraction of the maxilla. Moreover, it has been shown that it is possible to effectively treat this defect without extracting the teeth in the mand.