本文選題：正畸 + II類錯(cuò)牙合�。� 參考：《廣西醫(yī)科大學(xué)》2017年碩士論文

【摘要】：目的對比恒牙列II類高角骨面型MIA支持下拔牙矯治后牙頜顱面結(jié)構(gòu)的變化;比較恒牙列II類高角骨面型上氣道矢狀徑與無鼾正常中國人之間的差異;對比II類高角骨面型MIA支持下拔牙矯治后上氣道矢狀徑及舌骨位置的變化;探討II類高角骨面型MIA支持下拔牙矯治后固有口腔容積的改變對上氣道結(jié)構(gòu)的影響。為臨床診療提供參考。方法按納入排除標(biāo)準(zhǔn)選取22例恒牙列II類高角骨面型患者,其中男7例、女15例,年齡14~34歲(19.82±5.90歲),ANB角5°~9°(6.82°±1.54°),SN-MP角40°~55°(45.48°±4.45°),所有病例拔牙設(shè)計(jì),直絲弓矯治技術(shù),配合種植釘支抗矯治。主動(dòng)矯治時(shí)間20~28月,矯治完成后醫(yī)患雙方對矯治結(jié)果滿意。矯治后前后牙尖窩關(guān)系良好,頜骨矢狀向不調(diào)得到改善,垂直向得到一定的控制。X線頭影測量方法測量比較恒牙列II類高角骨面型上氣道矢狀徑與無鼾正常中國人之間的差異,測量比較恒牙列II類高角骨面型MIA支持下拔牙矯治前、后牙頜顱面結(jié)構(gòu)的變化,測量比較II類高角骨面型MIA支持下拔牙矯治前、后上氣道矢狀徑及舌骨位置的變化。SPSS17.0統(tǒng)計(jì)學(xué)軟件,計(jì)量資料用t檢驗(yàn);對牙頜顱面結(jié)構(gòu)、上氣道矢狀徑及舌骨位置的相關(guān)指標(biāo)進(jìn)行Pearson相關(guān)分析。結(jié)果1.恒牙列ii類高角骨面型男、女性上氣道鼻咽段、腭咽段、喉咽段較無鼾正常中國男、女性窄;恒牙列ii類高角骨面型女性上氣道舌咽段較無鼾正常中國女性窄;差異均有統(tǒng)計(jì)學(xué)意義(p≤0.05)。2.恒牙列ii類高角骨面型mia支持下拔牙矯治后sna、anb、sn-mp、u1-sn角較矯治前減小,差異有統(tǒng)計(jì)學(xué)意義(p≤0.05);u1-l1角較矯治前增大,差異有統(tǒng)計(jì)學(xué)意義(p≤0.05)。3.恒牙列ii類高角骨面型mia支持下拔牙矯治后上氣道矢狀徑鼻咽段、腭咽段、舌咽段較矯治前窄,喉咽段較矯治前增寬,但差異均無統(tǒng)計(jì)學(xué)意義(p0.05)。4.恒牙列ii類高角骨面型患者拔牙矯治后舌骨水平距離、垂直距離增大,矯治前后差異有統(tǒng)計(jì)學(xué)意義(p≤0.05)。5.矯治前后y軸角變化值與舌骨水平距離變化值呈正相關(guān)(p≤0.05);其余矯治前后牙頜顱面測量項(xiàng)目與上氣道矢狀徑及舌骨位置變化值無相關(guān)性(p0.05)。結(jié)論1.恒牙列ii類高角骨面型mia支持下拔牙矯治后,上下頜骨矢狀向不調(diào)得到良好改善,垂直向位置得到有效控制,提示臨床完善的支抗設(shè)計(jì)及上下頜骨矢狀向、垂直向的有效控制是該類錯(cuò)牙合正畸掩飾性治療后牙頜顱面形態(tài)位置得以改善的基礎(chǔ);2.恒牙列ii類高角骨面型患者上氣道矢狀徑各段均較無鼾正常中國人狹窄,研究結(jié)果進(jìn)一步證明了前人“ii類高角骨面型患者具有狹長的上氣道矢狀徑”之研究結(jié)論;3.恒牙列ii類高角骨面型mia支持下拔牙矯治后,上氣道各段均發(fā)生了程度不同的狹窄、舌骨位置更趨低位,雖然矯治前后比較差異無統(tǒng)計(jì)學(xué)意義,但仍為不利于上氣道正常功能行使的結(jié)果,也是OSAHS的發(fā)生隱患,需提請臨床重視。
[Abstract]:Objective to compare the changes of maxillary craniofacial structure after extraction with the support of class II high horned bone facial type (MIA) of permanent dentition, and to compare the sagittal diameter of upper airway between class II hyperhorn bone type of permanent dentition and normal Chinese without snoring. To compare the changes of sagittal diameter and hyoid position of upper airway after extraction with the support of class II high horned bone MIA, and to investigate the effect of the changes of oral volume on the upper airway structure after extraction with MIA support of class II high horned bone. To provide reference for clinical diagnosis and treatment. Methods according to the exclusion criteria, 22 patients (male 7, female 15, age 14, 34 鹵5.90 years old) with type II high horned facial type of permanent teeth were selected. The angle of ANB was 19.82 鹵5.90 years old. The angle of SN-MP was 40 擄, 55 擄, 45.48 擄鹵4.45 擄. All the patients were treated with straight wire orthodontic technique. The time of active correction was 20 ~ 28 months. After orthodontic treatment, the relationship of cusp fossa was good, the sagittal direction of jaw was improved, and the vertical direction was controlled. X-ray cephalometry was used to measure the difference between the sagittal diameter of the upper airway of class II of permanent teeth and the normal Chinese without snoring. The changes of maxillary craniofacial structure were measured before and after extraction with the support of class II high horned bone facial type (MIA) of permanent teeth. The changes of craniofacial structure were measured and compared before and after extraction with MIA support of class II high horned bone facial type. The changes of sagittal diameter and hyoid position of posterior upper airway. SPSS 17.0 statistical software was used to measure the data with t test, and Pearson correlation analysis was carried out on the structure of maxillary craniofacial, the sagittal diameter of upper airway and the position of hyoid bone. Result 1. The upper airway nasopharynx segment, palatopharynx segment and larynx segment were narrower in female than that in normal Chinese, and the upper airway glossopharyngeal segment was narrower in female than that in non-snoring group II. The difference was statistically significant (p 鈮，

本文編號：1929407