Three-dimensional Assessment of Skeletal Frog Appliance Outcomes Via Cone Beam Computerized Tomography | ||||
| Egyptian Orthodontic Journal | ||||
| Article 2, Volume 59, Issue 6, June 2021, Page 13-25 PDF (742.33 K) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/eos.2021.82919.1019 | ||||
 View on SCiNiTO | ||||
| Authors | ||||
Ibrahim Negm1; Riyad Iskander1; Khaled Aboulazm  2
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| 1Faculty of Dentistry, Ain Shams University, Cairo, Egypt. | ||||
| 2Faculty of Dentistry, Pharos University, Alexandria Egypt | ||||
| Abstract | ||||
| Objective: To assess the three-dimensional effect of the mini-screw supported palatal distalizer the Skeletal Frog appliance via the aid of the cone-beam computed tomography(CBCT) images. Methods: This study was conducted on twenty five subjects (9 boys and 16 girls), aged 13 to 15.2 years (average, 14.5 years) who exhibited Angle Class II division 1 malocclusion with the maxillary second molars fully erupted. CBCT were obtained prior treatment and post-distalization for all subjects. CBCT images were used to measure the skeletal, dental, and soft tissue changes. Paired-sample t-test was implemented to compare the mean difference between the pretreatment and post-distalization variables. Results: The maxillary first molars were efficaciously distalized, distally tipped, and intruded by 4.14mm, 9.02°, and 2.03mm (p≤ 0.05) respectively. The maxillary right and left first molar exhibited significant rotation 4.33° and 4.83° (p≤ 0.05) respectively. Whereas the maxillary inter-molar and inter-premolar widths increased by 2.41mm and 0.8mm respectively. Regarding the maxillary first and second premolars they revealed a distalization of 1.89mm and 2.8mm (p≤ 0.05) respectively, with insignificant extrusion. The maxillary central incisors showed a statistically insignificant decrease in the anteroposterior position. Whereas the interincisal angle revealed a statistically significant increase by 3.24° (p≤ 0.05). Conclusion: The Skeletal Frog appliance efficaciously distalizes the maxillary molars with the second molars fully erupted while providing absolute skeletal anchorage. | ||||
| Keywords | ||||
| 3D; Frog Appliance; Distalization | ||||
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