多曲方絲弓技術(shù)治療成人輕度骨性Ⅲ類錯(cuò)(牙合)的臨床研究
[Abstract]:Objective: to correct mild skeletal class III malocclusion (?) in adults by multi-curved wire arch correction technique, and to explore its clinical effect. Materials and methods: a case of mild skeletal class III malocclusion in adults treated in the Department of Orthodontics, affiliated Stomatological Hospital, School of Stomatology, Dalian Medical University in June 2014 was selected. Twenty-five percent of female patients came to visit at the age of 28. The anterior teeth were occlusal, the maxillary midline was consistent with the facial midline, the left side of the mandibular midline was 0.5mm, the left fangs and molars were neutral, and the right fangs and molars were near-middle. Through the clinical examination of the patients, the measurement and analysis of X-ray lateral cephalogram and the whole mouth surface tomography, the model analysis, the orthodontic treatment plan was worked out: the maxillary and mandibular third molars were removed before orthodontic, and the standard square wire arch bracket of 0.018 "system was bonded. The multi-curved square wire arch correction technique was used to correct the mandibular molars. After the Ni-Ti wire row was neat and flat, the mandibular molars were tilted upright and moved distally by MEAW arch, and the orthodontic anterior teeth were properly upright, combined with type III short traction and vertical traction of the anterior teeth. To achieve the purpose of masking therapy and establish the normal occlusal relationship. After the correction is completed, the fixed correction device is removed, and the patient is made and ordered to wear Hawley retainer to maintain the stable therapeutic effect. After correction, the whole curved surface tomography and lateral cephalic film were taken, and the recording model was made. Results: after 11 months of orthodontic treatment, the data and structure overlap of X-ray cephalometric measurement before and after orthodontic treatment were compared and analyzed: the relationship between bilateral fangs and molars was neutral, and the front teeth were edge-to-edge. Correct, cover (?), cover up to normal, lower molars upright and partly far away, FMA increased 0.8 擄to indicate vertical control can be used, and the lower molars are upright and partly distant, and the increase of 0.8 擄indicates that the control of vertical direction can be obtained. The upper and lower incisors were admitted, the Z angle increased 1.8 擄, the occlusal relationship was well improved, and the patients were satisfied with the correction results. Conclusion: the correction technique of multi-curved square wire arch can effectively control the accurate movement of teeth in the arch, make the molars lean upright and recover the incisors, so as to achieve the normal overlying (?) The relationship between coverage and occlusal was improved obviously, and good correction effect was obtained.
【學(xué)位授予單位】:大連醫(yī)科大學(xué)
【學(xué)位級(jí)別】:碩士
【學(xué)位授予年份】:2017
【分類號(hào)】:R783.5
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