Application of additional anthropometric and functional methods in children undergoing orthodontic treatment using braces

Abstract

Background Occlusal interference causes instability in temporomandibular joint and hyperactivity of mastication muscles which eventually leads to temporomandibular joint dysfunction. Therefore, achieving stable occlusion is important in young patients. It is key factor in optimizing functional occlusion in adulthood. Aim Application of «The ABO Model Grading System» and Mandibular Position Indicator as an additional diagnostic method in children undergoing orthodontic treatment using braces. Methods Thirty-two patients aged 14 to 18 diagnosed with teeth crowding on the upper and lower jaws were examined, then separated in two groups of 16 people each. All patients underwent orthodontic treatment using braces. Results In group 2, due to application the anthropometrical system of quantitative evaluation ABO with re-fixing the incorrectly arranged braces by indirect bonding method, occlusal interferences were eliminated. MPI analysis showed discrepancy between the central occlusion and the central relation which was not as relevant as in the group 1 (p > 0.05). Conclusion Using the anthropometric system of quantitative assessment of ABO with subsequent re-fixation of incorrectly placed braces by indirect bonding, effectively improves the MPI. This determines the unity of position between articular condyles on the lower jaw in the centric occlusion and in the centric relation, which allows to get a stable result of orthodontic treatment.

Study of the Difference Between Centric Occlusion and Retruded Contact Position

“…Most of the studies of the CR position and comparison of the different methods of determining the CR position were done in articulators with condyle position indicator [4][5][6][7][8][9][10][11]. With difference of the casts position to articulator axis and real patients terminal hinge axis, and articulators rigidity, certain differences between articulators condyle to condylar movements in patients are expected.…”