| dc.description.abstract | Background: The human body is interconnected, if all body segments humans
are balanced, then good posture. The head balance involves skulls, spine,
mandible, hyoid bone, upper respiratory tract, muscles and tongue. Comorbid
skeletal class II malocclusion with extension head posture. Hyoid bone
functions to maintain the balance of the head posture. Objective: to see the
relationship of comorbid skeletal class II malocclusion with head posture,
relationship head posture of skeletal class II malocclusion with the width of the
respiratory tract, and relationship head posture of skeletal class II malocclusion
with hyoid bone position. Materials and methods: The research design was
observational analytic using digital photographs of the six upper anterior teeth
of 70 patients undergoing orthodontic treatment at USU General Hospital. The
six anterior teeth were given plaque disclosing material 3 tone to check the
level of plaque maturation. The staining of the plaque is cleaned to then
examine the level of the white spot lesion. Examination was carried out from
the intraoral photograph of the patient by dividing the four parts of the tooth
surface. Results: The chi-square test showed that there was no significant
relationship between the skeletal class II malocclusion and the head posture (P>
0.05). There is no significant relationship between the head posture in the
skeletal class II malocclusion and the respiratory tract (P> 0.05). There is no
significant relationship between the head posture in the skeletal class II
malocclusion with vertical position and angular hyoid bone (P> 0.05). There is
a significant relationship in the posture head of skeletal class II malocclusion
sub -group prognati maxillary and retrognati mandible with the anteroposterior
position of hyoid bone. Conclusions: Hyoid bone position is more posterior in
skeletal class II malocclusion s sub -group prognati maxillary and retrognati
mandible. | en_US |
