Features tone masticatory muscles in patients with deep incisor disocclusion

Galstyan Samvel Galustovich, Pavlova Svetlana Georgievna, Puzireva Margarita Nikolaevna, Sevastyanov Arkady Vladimirovich, Fishchev Sergey Borisovich

Deep premaxillary disocclusion (GRD), accompanied by a decrease of the height of gnatichesky part of the person, leads to violations of the anatomical parameters of the cranio-facial complex and modynamical equilibrium of the masticatory muscles. Purpose. Examine the condition of the tonus of the masticatory muscles in patients with GRD depending on reducing the height of gnatichesky part of the person. Materials and methods. 35 patients aged from 21-35 years (women 20 people, men 15 people) with HRD accompanied by a decrease in the height of the gnatic part of the face (1 group) and 29 patients aged 21-35 years ( women 19 people, men 10 people) with HRD and maintaining proportionality of the vertical parameters of the face (2 group) were examined. Patients of group 1 were treated with an increase in the height of the gnatic part of the face, and patients of group 2 – prosthetic treatment. The quality of treatment was assessed using myotonometry, measuring rest tone (TP) and tension tone (Tn) of the masticatory and temporal muscles proper. The comparison group consisted of 70 people aged 21-35 years (40 women, 30 men), with intact dentition and physiological types of bite. Results. Increased tone of the masticatory muscles of patients of the 1st group, before treatment was lower than that obtained in patients of group of comparison. In patients of group 2, these indicators were almost the same as in the comparison group.

Keywords:deep incisor disocclusion, reduction of the height of the gnatic part of the face, orthopedics, orthodontics, prosthetic treatment.