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.

Introduction: Chin cup (CC) therapy has been used as the traditional appliance for treating class III malocclusion during mixed dentition period. The aim of this study was to investigate the effect of CC on the improvement of skeletal and dentoalveolar skeletal changes in class III patients during mixed dentition stage. Materials and methods:A total of 30 patients (7-9 years old) with skeletal class III malocclusion were selected based on clinical and cephalometric examination. Out of 30 patients, 20 underwent CC therapy. All orthodontic records and measurements were taken before and after treatment. Similar records were collected from the control group. The lateral cephalometric films were traced before and after treatment and analyzed.Results: There was a significant improvement in maxillary and the mandibular skeletal measurements after CC therapy. Improvement of ANB angle and an increase in Wits appraisal have been detected in the treated group according to intermaxillary skeletal variables. Conclusion:The study concluded that the CC therapy is effective for correcting skeletal class III malocclusion along with positive changes in the dentoskeletal variables during the mixed dentition stage.

Objective:The aim of the present study was to make an evaluation of the bone density in the mandible using three different orthodontic arch wire. Subjects and methods: Thirty orthodontic patients both males and females were selected and treated by the same researcher. The patients were randomly divided equally into three groups according to the type of wire that was used and each group had 10 patients equally. Results: The results showed that bone density showed a decrease in premolar area of the mandible between the beginning of orthodontic treatment and the end of levelling and alignment stage. Conclusion: There was a decrease in tissue mineral density with using the three archwires with non-significant difference between them.

Objectives:The aim of this study was to evaluate the dentoskeletal effect of buccal bone graft with buccal surgically assisted rapid maxillary expansion in young adults using cone beam computed tomography. Methods: The current randomized clinical study was conducted on a total sample of 21 orthodontic patients. The sample with mean age 20 Y. CBCTs were taken before and after orthodontic expansion. The patients were divided in to three groups, group I: consisted 7 patients treated with Hyrax expander, in conjunction with selected Buccopalatal corticotomy, group II: consisted 7 patients treated with Hyrax expander, in conjunction with selected Buccal corticotomy only, group III consisted 7 patients treated with Hyrax expander, in conjunction with selected Buccal corticotomy only, followed by immediately placement of bone graft directly over the decorticated plate. Results: The results showed high significant increase in buccal bone thickness in the group III. On the other hand, there was a significant decrease increase in buccal bone thickness in groups I&II. Conclusion: The buccal bone graft with surgically assisted RME in young adult leads to increase in buccal bone thickness than the other technique without bone graft. The other two techniques without bone graft showed significant reduction in buccal bone thickness.

The current trial proved the efficiency of the use of miniplates anchorage with FFRD in enhancement the skeletal outcomes of Class II treatment. The technique is advocated for use in Class II subjects having pre-treatment proclined lower incisors.