Use of Clark Twin blocks in the treatment of Angle class II malocclusion

The purpose of the paper was to determine some practical features of the treatment of Angle class II malocclusion accompanied by mandibular retrognathia using Clark Twin blocks. The following objectives were set: 1. To determine the assessment of the clinical parameters of the face during the treatment of Angle class II Malocclusion with Clark Twin Blocks. 2. To study the degree of correct occlusal relation after the functional treatment of Angle class II malocclusion. 3. To assess changes of cephalometric indices in patients with mandibular retrognathia treated by this method. The study is based on the analysis and assessment of clinical and paraclinical parameters of 14 patients with Angle class II malocclusion, who were subject to orthodontic treatment using Clark Twin blocks. Patients` age ranged from 8 to 12 years. The following diagnostic methods were used: clinical examination, biometric model study (Pont, Korkhaus methods), and radiological examination (orthopantomography, teleradiography). Sagittal occlusal relation improved in all patients receiving treatment. Expansion contributed to an improved tortoposition of the front teeth in 10 patients and correct relation of the lateral teeth in the transverse plane in 3 patients. Asymmetric expansion was performed in 2 cases. In all patients in the study, the clinical parameters of the face, as well as the frontal and lateral occlusal relation in the three planes of space improved significantly. Assessment of the soft tissue parameters and dental relation in the lateral and frontal area can be observed in a clinical case.