Evaluation of the Effect of Fixed Anterior Biteplane Treatment on Temporomandibular Joint in Patients with Deep Bite

Abstract

Objective: To investigate the effects of fixed anterior biteplane treatment on temporomandibular joint in deep bite patients.

Methods: The sample comprised 17 Class II patients with deep bite and decreased lower anterior facial height. The average patient age was 9.9±0.9 years. Transcranial temporomandibular joint radiographs were obtained from the subjects before (T0) and after fixed anterior biteplane treatment (T1). Anterior joint space, posterior joint space, superior joint space, anteroposterior thickness of the condylar head, vertical height of the articular fossa, and the articular fossa slope were measured on temporomandibular joint radiographs to evaluate the position of the mandibular condyles in the glenoid fossa.

Results: The average treatment duration was 8.5±2.1 months. Slope of the articular fossa, vertical height of the articular fossa, anteroposterior thickness of the condyle, posterior joint space, superior joint space, and anterior joint space showed no statistically significant difference between T0 and T1 (p>0.05).

Conclusion: Fixed anterior biteplane appliance treatment did not change the condyle fossa relationship in Class II deep bite patients at the time of appliance removal.

Keywords: Angle Class II; deep bite; temporomandibular joint.

Conflict of interest statement

Conflict of Interest: The authors have no conflict of interest to declare.

© Copyright 2020 by Turkish Orthodontic Society.

Figures

Figure 1

Intraoral photograph of the fixed anterior biteplane appliance

Figure 2

Landmarks and planes: L1, line tangent to the most superior point of the glenoid fossa (SF) and parallel to the superior border of the radiograph; L2, line parallel to L1 to locate the superior aspect of the condyle (SC); L3, line parallel to L2 through the most convex point of the anterior aspect of the condylar head; t1, tangent to the posterior aspect of the condyle from SF; t2, tangent to the anterior aspect of the condyle from SF; t3, line best fit to the anterior slope of the glenoid fossa; d1, line drawn perpendicular to t1 through the posterior condyle point; d2, line drawn perpendicular to L2 through the superior fossa point: d3, line drawn perpendicular to t2 through the anterior condyle point; d4, line drawn perpendicular to L1 through the most inferior point of articular eminence; SF, the most superior point of the glenoid fossa; SC, the superior aspect of the condyle; 1, posterior condyle point; 2, anterior condyle point; 3, the most posterior point of condylar head; 4, anterior head of the condyle; 5, the most inferior point of the articular eminence; 6, point intersected the glenoid fossa perpendicular to t2 from anterior condyle point; 7, point intersected the glenoid fossa perpendicular to t1 from posterior condyle point; 8, intersection of d4 and L1

Figure 3

Measurements: 1, Slope of the articular fossa; 2, Vertical height of the articular fossa; 3, Thickness of the condylar head; a, Posterior joint space; b, Superior joint space; c, Anterior joint space