Abstract:
Introduction: Angle Class III malocclusions relate to abnormalities of sagittali are fairly common
and complex pathology of maxillofacial region, which can lead to various complications such as impaired
function of mastication, increased risk of periodontal disease, the development of disorders of the TMG
and need of timely diagnosis and treatment of this pathology.
Methods: The study is based on observations of the dynamics in the treatment of 12 patients with
Angle Class III malocclusions, aged 9 to 12 years and performed at the Department of Pediatric Oral
and Maxillofacial Surgery, Therapeutic Dentistry childhood and Orthodontics at the Republic Children's
Clinic «E. Cotaga».
Results: On the basis of observations of patients with Angle Class III malocclusions on clinical examination revealed violations of personal, functional, clinical and morphological traits and disorders in
photometric, biometric and radiographic methods of investigation.
Conclusions: At the heart of a dental anomaly of Angle Class III malocclusion are functional disorders, not corresponding to the size of jaw and teeth, as well as genetic factors.
Class III malocclusion notes a violation of the facial profile, pronounced nasolabial fold and smoothed
chin tuck. For intraoral examination indicated a combination of sagittal anomalies of occlusion with
transversal anomalies.
On the basis of biometric examinations it was noted a violation of premolar and molar index by the
method of Pont, as well as increase in the index of Bolton.
Class III malocclusion in removable bite used functionally active orthodontic appliances, in the permanent dentition is used removable design, straight-wire or self-ligating appliances.
The cephalometric examination for the study identified an increase in the angles SNB, ANB and the
decrease SNA.
