1. ORTHODONTIC CASE Done By : Esra Mohammad

2. Name : Omar Hussam Age : 9 years old No medical conditions reported at present. Stage of dentition : Late mixed dentition

3. Frontal view Bilateral : Symmetrical

5. profile Straight Lips are together in centric occlusion

6. intra oral views Anterior view : *Anterior crossbite on tooth (21) * Upper shift to right

7. model analysis Tanaka and Johnston analysis : Sum of lower C.I = 26 26 / 2 = 13 For lower : 13 + 10.5 = 23.5 23.5 x 2 = 47 47 + 6 + 7 + 6 + 7 = 73 = tooth material in lower arch . For upper : 13 + 11 = 24 x 2 = 48 48 + 9.5 + 7.5 + 10 + 7.5 = 82.5 tooth material in the upper arch .

8. Cephalometric radiograph

9. Cephalometric analysis

10. Dental Evaluation SNـــــــــــــ 96 NA ـــــــــــــ 21 IMPA ـــــــــــــ 86 NB ـــــــــــــ 24 ــــــــــــــــــــــ 136 Result : retroclaine of lower incisors.

11. Anterior There is crowding in lower anterior teeth

12. RightLeft

13. treatment objectives To correct upper left lateral incisor Treatment Plan : Hawley’s appliance with Z-spring on 21

14. Anterior RightLeft

16. Activation of Z-spring

17. Anterior RightLeft

18. Thank you