Abstract
Objective: The aim of this study was to compare the effect of face mask (FM) and Maxillary Bite Block (BB) in skeletal class III patients during mixed dentition with control group of the same class during their growth. Materials & Methods: Forty-two patients were selected based on clinical and cephalometric examination, with age ranged from 6 to 8 years according to definite criteria. Patients were classified into two groups: treated and control groups; all records were taken for every patient. Lateral cephalometric films were traced before and after treatment and analyzed. Results: Intermaxillary skeletal variables showed significant improvement in the treated group with an average increase of ANB angle (Maxilo mandibular difference angle) of 3.14° and an average increase in wits appraisal 2.15 mm. Conclusion: The study concluded that, treatment with face mask and maxillary bite block induced significant dentoskeletal changes.
Highlights
Orthopedic appliances are those appliances through which growth could be modified
Growth modification in skeletal Class III malocclusion can be achieved by inhibition or redirection of mandibular growth and/or stimulation of maxillary growth by traction
The study was done on two groups of patients with total number of 24 patients with skeletal Class III malocclusion; patients were randomly selected from the outpatient clinic of orthodontic Department, Faculty of Dental Medicine, Al Azhar University Cairo, Egypt
Summary
Orthopedic appliances are those appliances through which growth could be modified. Extra oral appliance is an example of this orthopedic correction. The preferred treatment for children having skeletal Class III malocclusion with retruded maxilla is the anterior movement of the maxilla where bone is added at the posterior sutures. This can be accomplished with Delaire face mask [1]-[5] that obtains anchorage from the forehead and chin or one of its modifications as, the suborbital face mask [6] that obtains its anchorage from the zygomatic bones and chin. The face mask exerts a protraction force on maxillary splints that makes the upper arch as a single unite
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