Majorarea frecvenţei anomaliilor dento-maxilare, adresabilitatea sporită in dentaţia mixtă şi tratamentul ortodontic costisitor in dentiţia permanentă argumentează actualitatea studierii problemei abordate şi necesitatea cercetării ulterioare a particularităţilor evoluţiei clinice şi determinarea obiectivelor de abordare ortodontică pentru acordarea asistenţei ortodontice eficiente. Actualitatea problemei se explică prin atitudinea populaţiei faţă de aspectul său estetic, care se instalează din perioada de dezvoltare a copilului, de aceea decalajul inciziv anterior cu avansarea mezială a maxilarului inferior şi modificarea profilului facial actualizează problema. Scopul lucrării a constituit in analiza tratamentului interceptiv a malocluziei de clasa III-a Angle, care constă in depistarea anomaliilor dento-maxilare la primele semne de debut sau in intreruperea evoluţiei acestora care pot fi efectuate prin utilizarea aparatelor ortodontice mobilizabile bimaxilare cu acţiune combinată sau funcţională. In lucrarea dată s-a analizat studiul clinic controlat a pacienţilor cu malocluzie de clasa III-a Angle, forma dento-alveolară cu varsta cuprinsă intre 9—11 ani şi aflaţi in tratamentul ortodontic prin intermediul aparatului ortodontic bimaxilar, inventat, aplicat şi utilizat in cadrul catedrei. Pacienţii au fost grupaţi in 2 loturi: L1 — pacienţi cu dentiţie mixtă, cărora li s-a acordat asistenţă ortodontică prin intermediul aparatului ortodontic bimaxilar, L2 — pacienţi cu malocluzie de clasa III-a Angle fără tratament ortodontic (refuz la tratament ortodontic, tratament intrerupt). Pacienţii au fost investigaţi in baza următoarelor metode de diagnostic: examenul clinic, studiul fotostatic, studiul modelelor de diagnostic, electromiografia de suprafaţă, analiza cefalometrică. Rezultatele studiului confirmă rolul important al tratamentului ortodontic pentru pacienţii cu dentiţie mixtă, prin imbunătăţirea profilului facial prin intermediul dispozitivului ortodontic bimaxilar

Currently there can be observed an increased frequency of dentomaxillary abnormalities, simultaneously there is an increase in the number of patients with mixed dentition who seek orthodontic treatment that can be rather expensive. All of these confirm the relevance of the study. In addition to this, it highlights the necessity of further research regarding the peculiarities of clinical evolution, as well as proves the significance of identifying the objectives associated to the orthodontic approach in order to provide an effective orthodontic care. The relevance of the issue can be explained by the general way people perceive their aesthetics, a process that starts during the child’s development and growth stage. That is why the anterior incisal discrepancy with a medialized advancement of the lower jaw and the changes that occur in the facial profile, increase the significance of the studied issue. The purpose of this study is to analyze the interceptive orthodontic treatment for Angle Class III malocclusion, which consists in identifying the dentomaxillary anomalies at their early signs of onset, as well as in disrupting their evolution, which can be accomplished by using removable orthodontic bimaxillary appliances, with either a combined or a functional effect. We have conducted an analysis of a clinical controlled study for patients (9-11 years of age) with Angle Class III malocclusions (dento-alveolar form), who have followed an orthodontic treatment using the bimaxillary orthodontic appliance, that was developed, implemented and is being used at the Department of Orthodontics. Patients were divided into 2 groups: the first group (L1) was composed of patients with mixed dentition, which received orthodontic care with the aid of bimaxillary orthodontic appliances; the second group (L2) — patients with Angle Class III malocclusions, who didn’t receive orthodontic treatment (patients who either refused or discontinued treatment). The patients have been examined, using the following diagnostic methods: clinical examination, photostatic study, diagnostic analysis of the study models, surface electromyography and cephalometric analysis. The results of the study prove the significant role of the orthodontic treatment for patients with mixed dentition by improving the facial profile with the aid of a bimaxillary orthodontic appliance.