成人骨性Ⅲ類錯(cuò)(牙合)術(shù)前正畸治療
發(fā)布時(shí)間:2019-06-25 08:41
【摘要】:目的:探討正畸正頜聯(lián)合治療成人骨性Ⅲ類錯(cuò)(牙合)的臨床矯治效果。 方法:選取大連醫(yī)科大學(xué)附屬第二醫(yī)院2009年11月收治的骨性Ⅲ類下頜前突患者一例,男性,27歲,恒牙(牙合),雙側(cè)磨牙、尖牙為完全近中關(guān)系,前牙反(牙合),,前牙覆蓋-1mm,上頜中線正,下頜中線右偏約2mm,Spee曲線略深。正面觀為均面,面部對(duì)稱,無(wú)偏斜;側(cè)貌為凹面型,面中1/3凹陷,上唇部正常,下頜前突。采用正畸與正頜的聯(lián)合治療,術(shù)前正畸上頜減數(shù)兩個(gè)第一前磨牙,使用閉合曲內(nèi)收上前牙,直立上前牙牙軸,下頜不拔牙,采用弓絲上打歐米茄曲去除牙代償性舌傾;術(shù)后正畸使用三角形牽引來(lái)調(diào)整咬合關(guān)系,并對(duì)治療前后的頭顱側(cè)位片及模型進(jìn)行比較分析。 結(jié)果:矯治療程共為35個(gè)月。對(duì)該病例治療前后進(jìn)行比較:(1)SNA,A-NaPerp.在治療前后無(wú)變化,SNB從88°減小到83°,Po-NaPerp.值從14mm減小到9mm,ANB從-4°增大到1°,Wits值從-10mm增大到-2mm,使頜骨矢狀關(guān)系由Ⅲ類變?yōu)棰耦悾褾MA減小2°,ANS-Me減小4mm,面軸角(Ba-N)-(Ptm-Gn)從3°減小到-1°,表明面下1/3的高度減小,下頜骨逆時(shí)針旋轉(zhuǎn)。(2)上牙軸改善明顯,U1-SN從116°減小到108°,U1-NA從32.5°減小到24°,U1-NA減小3mm,上切牙突距治療后較治療前減小了1.5mm;而L1-NB和U1-L1在治療前后無(wú)明顯變化,但I(xiàn)MPA從70°增加到79°,表明下中切牙長(zhǎng)軸與眶耳平面的交角趨向合理,下中切牙的舌傾得到了顯著的改善。(3)軟組織的側(cè)貌變化非常顯著,矯治完成后測(cè)量結(jié)果發(fā)現(xiàn)由于軟組織頦前點(diǎn)Pos后退,使E審美線順時(shí)針后移,上唇突度,UL-EP略增加,鼻唇角從76°增大到83°,面凸角從6°增大到11°,而下唇突度,LL-EP減小,表明下唇后移,改善患者面貌的不協(xié)調(diào),患者對(duì)治療結(jié)果很滿意。 結(jié)論:(1)對(duì)于骨性Ⅲ類錯(cuò)(牙合)的成人患者,單純的正畸或外科治療無(wú)法取得良好的治療效果,而通過(guò)正頜外科的聯(lián)合治療,在功能和美觀上都取得了較好的效果。(2)術(shù)前正畸是以正頜手術(shù)目標(biāo)為基礎(chǔ)的,只有充分去除牙代償,使上下前牙直立于上下頜骨中合適的位置,才能在術(shù)后將頜骨再定位到理想位置。
[Abstract]:Objective: to explore orthodontic? Clinical effect of orthodontic combined treatment of adult osseous class III malocclusion (occlusal). Methods: a male, 27 years old, permanent teeth (occlusal), bilateral molars and fangs were selected from the second affiliated Hospital of Dalian Medical University in November 2009. the anterior teeth covered with-1mm, the maxillary midline was positive, and the right side of the middle mandibular line was about 2mm, and the Spee curve was slightly deeper than that of the anterior teeth (occlusal), the anterior teeth were covered with-1mm, the middle maxillary line was about 2mm, and the right side of the mandibular middle line was about 2mm, and the Spee curve was slightly deeper. The front view is homogeneous, the face is symmetrical, there is no deviation, the side appearance is concave, the middle face is 1 鈮
本文編號(hào):2505551
[Abstract]:Objective: to explore orthodontic? Clinical effect of orthodontic combined treatment of adult osseous class III malocclusion (occlusal). Methods: a male, 27 years old, permanent teeth (occlusal), bilateral molars and fangs were selected from the second affiliated Hospital of Dalian Medical University in November 2009. the anterior teeth covered with-1mm, the maxillary midline was positive, and the right side of the middle mandibular line was about 2mm, and the Spee curve was slightly deeper than that of the anterior teeth (occlusal), the anterior teeth were covered with-1mm, the middle maxillary line was about 2mm, and the right side of the mandibular middle line was about 2mm, and the Spee curve was slightly deeper. The front view is homogeneous, the face is symmetrical, there is no deviation, the side appearance is concave, the middle face is 1 鈮
本文編號(hào):2505551
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