上頜前方牽引矯治早期骨性Ⅲ類錯(cuò)(牙合)的初步臨床研究
發(fā)布時(shí)間:2019-02-19 13:35
【摘要】:骨性安氏III類錯(cuò)是臨床比較常見的一類錯(cuò)畸形,主要臨床表現(xiàn)為下頜前突、上頜骨后縮或發(fā)育不足,而上頜骨發(fā)育不足會(huì)導(dǎo)致面中部三分之一凹陷,且有隨生長(zhǎng)發(fā)育而加重的趨勢(shì),不但影響口系統(tǒng)功能和面部美觀,重者甚至影響兒童的心理健康[1],由于個(gè)體生長(zhǎng)發(fā)育的不確定性使得治療具有一定的難度。上頜前方牽引能促進(jìn)上頜骨前移,并可以促使上頜骨生長(zhǎng),因此,,對(duì)生長(zhǎng)發(fā)育高峰期前上頜骨發(fā)育不足的患者及時(shí)進(jìn)行干預(yù)治療、矯形治療,積極調(diào)動(dòng)機(jī)體生長(zhǎng)發(fā)育的潛力,最大程度地改善不協(xié)調(diào)的頜骨關(guān)系,成為Ⅲ類錯(cuò)患者治療的主要方法,從而阻止反向嚴(yán)重方向發(fā)展,避免了部分患者成年后進(jìn)行正畸-正頜外科聯(lián)合治療。 目的: 本研究旨在通過上頜前方牽引聯(lián)合快速擴(kuò)弓對(duì)上頜后縮或發(fā)育不足為特征的骨性Ⅲ類錯(cuò)畸形的矯治,測(cè)量分析治療前、后以及保持6個(gè)月后上頜骨軟硬組織頭影測(cè)量值的變化,探討其臨床效果及其穩(wěn)定性,為臨床設(shè)計(jì)、治療提供有利的依據(jù)。 方法: 選擇2006年6月至20012年5月XX口腔醫(yī)學(xué)院正畸科治療的上頜發(fā)育不足引起的骨性Ⅲ類錯(cuò)患者18例,其中男8例,女10例;年齡8.5~13.5歲,平均10.3歲。對(duì)治療前、中、后分別拍攝頭顱側(cè)位X線片,進(jìn)行頭影測(cè)量分析,統(tǒng)計(jì)學(xué)分析采用方差分析。 結(jié)果: 所有患者均由ClassIII類矯正為ClassI類,牽引結(jié)束后上頜骨A點(diǎn)平均向前移動(dòng)2.13mm。SNA平均增大0.92度,上頜切牙向前移動(dòng)平均2.75mm,上切牙至SN角度平均改變5.01度。所有患者均由反覆蓋變?yōu)檎8采w,由-1.83改變?yōu)?.91,磨牙咬合關(guān)系由安氏III類轉(zhuǎn)變?yōu)榘彩螴類。下頜平面角由33.56增加到36.97,增加3.41度。Y軸也增加0.86度,均有統(tǒng)計(jì)學(xué)意義;颊呔嫘偷玫搅嗣黠@的改善和提高,骨骼和軟組織以及唇的位置均得到了改變。ClassIII關(guān)系有復(fù)發(fā)趨勢(shì),可能是下頜生長(zhǎng)導(dǎo)致。 結(jié)論: 1.上頜前方牽引聯(lián)合快速擴(kuò)弓矯治兒童骨性III類錯(cuò)使軟組織面型得到了明顯的改變,骨骼和軟組織以及唇的位置均得到了改變,牙齒和骨骼的改變是一樣的,可以推測(cè),很大程度上減小了患者成人后進(jìn)行正頜手術(shù)的可能性。 2.上頜骨前移的效果基本是穩(wěn)定的,安氏III類錯(cuò)的復(fù)發(fā)趨勢(shì)主要是下頜骨進(jìn)一步生長(zhǎng)的結(jié)果。
[Abstract]:Bone III malocclusion is a common malformation in clinic. The main clinical manifestations are mandibular protrusion, maxillary retraction or underdevelopment, and maxillary hypoplasia can lead to 1/3 depression in the middle of the face. There is a tendency of aggravation along with growth and development, which not only affects the function of oral system and facial beauty, but also affects the mental health of children [1]. Because of the uncertainty of individual growth and development, the treatment is difficult to some extent. Maxillary anterior traction can promote maxillary anterior movement and promote maxillary growth. Therefore, patients with premaxillary hypoplasia in peak period of growth and development can be treated with timely intervention, orthopedic treatment, and active mobilization of the potential of body growth and development. To the greatest extent, the uncoordinated relationship of jaws was improved, which became the main method for the treatment of class 鈪
本文編號(hào):2426547
[Abstract]:Bone III malocclusion is a common malformation in clinic. The main clinical manifestations are mandibular protrusion, maxillary retraction or underdevelopment, and maxillary hypoplasia can lead to 1/3 depression in the middle of the face. There is a tendency of aggravation along with growth and development, which not only affects the function of oral system and facial beauty, but also affects the mental health of children [1]. Because of the uncertainty of individual growth and development, the treatment is difficult to some extent. Maxillary anterior traction can promote maxillary anterior movement and promote maxillary growth. Therefore, patients with premaxillary hypoplasia in peak period of growth and development can be treated with timely intervention, orthopedic treatment, and active mobilization of the potential of body growth and development. To the greatest extent, the uncoordinated relationship of jaws was improved, which became the main method for the treatment of class 鈪
本文編號(hào):2426547
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