Analysis Of Changes In Adult Skeletal Class Ⅱ Orthodontic Treatment Of Facial Soft Tissue

Objective: The orthodontic treatment of adult skeletal class II patients, evaluatedmeasurement index profile esthetic indexes of soft tissue and hard tissue contrast beforeand after the treatment, to explore the orthodontic treatment of adult skeletal class IIpatients with facial soft tissue change.Methods: Select the Shenyang Dental Hospital in December2007,admitted to a case ofadult patients with skeletal class II, female,23years old, Maxillary first molar on theright and left second premolar caries unplug，LL crowding5㎜, Anterior deep overbiteI°, deep cover II°，Mandibular midline right side2mm, canines far in the relationship,On the right side molars is far from tip to tip.Patients to examine complained ofprotruding teeth are not neat,mouth convex and thinking improve the surface type.By itsclinical and x-ray examination for internal and external, combined with measurement ofskull lateral film data and patients want to improve their desire to face developedextraction correction programme35and45,Neat rows of flat dentition, close extractionspace, Adjust the molar occlusion relationship. Before and after treatments taken X-rayslice head side. Select E line、a total of33、profile judgement equation of aestheticindicators, Changes before and after treatment of soft and hard tissue.Results: The treatment course of28months..After treatment, all patients with teeth inmouth arranged in neat rows, upper and lower dentition center on the positive, overbiteand overjet of normal relations, bilateral canine relationship between neutral, neutral molar relationship; bilateral TMJ examination no abnormalities, and size of the aperturetype normal, full mouth tooth of cusp fossa occlusion relationship withoutinterference.Many aesthetic index by orthodontic treatment and its associated hardtissue measurements have changed：（1）U1-SN、U1-NA、L1-MP、L1-NB were decreased（2）MP-FH, MP-SN Y-axis angle、were increased（3）UL-EP, LL-EP, nasolabialgroove depth, mentolabial sulcus depth, upper lip, lower lip position and lower lipposition concave point thickness decreased（4）NLA、A’-LS-FH、Bs-Li-FH、Pg-B’-FH、G-Sn-Pg and Z were increased.After orthodontic treatment of soft tissue profile byconvex tend to be straight，profile improved to beautifuland the patient was pleased.Conclusion:1、 Orthodontic treatment can make the adult skeletal class II patientsprofile is significantly improved, but there are certainlimits.2、 Adult orthodonticpatients’ profile changes were related the position of upper and lower anterior teeth; themaxilla and the mandible sagittal position has not changed; chin position changedlittle.3、 Adult patients with skeletal class II application of implant anchorage canachieve maximum adduction of anterior teeth and improve face...