上颌(牙合)垫式矫治器联合舌篓矫治乳牙期前牙反的效果评价

目的探讨上颌垫式矫治器联合舌篓矫治乳牙期前牙反对牙面及语音功能的影响。方法选择学龄前前牙反患者20名,平均年龄4.4岁。随机选择10名患者佩戴传统上颌垫式矫治器,另10名患者佩戴上颌垫式矫治器联合舌篓,比较两组治疗前后的头影测量值和语音变化。结果治疗后两组间头颅侧位片测量值无显著性差异(P0.05)。两种矫治器正畸治疗前后SNA角、NA-PA角有显著性变化(P0.05),SNB角、ANB角矫治前后无统计学差异(P0.05)。U1-SN角、U1-NA角、U1-NA距矫治前后有显著性差异(P0.01)。上颌垫式矫治器联合舌篓组治疗后语音清晰度明显升高。结论乳牙期前牙反患者使用上颌垫式矫治器联合舌篓有利于上颌骨的发育,改变了上颌前牙的倾斜度,塞擦音清晰度明显升高,并且舌篓及舌肌功能训练有助于反的解除与语音的改善。     

安氏Ⅱ类2分类错(牙合)矫治前后X线头影测量值及咀嚼效率的对比研究

目的 比较安氏Ⅱ类2分类错(牙合)患者矫治前后X线头影测量值和咀嚼效率的变化.方法 选择24例安氏Ⅱ类2分类错(牙合)患者,采用直丝弓矫治技术非拔牙矫治.X线头影测量分析患者矫治前后牙齿及颌骨的变化,吸光度法比较患者矫治前后咀嚼效率变化,SPSS 10.0统计软件进行配对样本t检验.结果 矫治前后X线头影测量结果显示患者SNB、ANB、上前牙倾斜度、上下前牙交角、下颌平面角、Y轴角、ODI值差异有统计学意义(P＜0.05).矫治前后的吸光度值分别为0.43±0.12、0.58±0.14,差异有统计学意义(t=1.007,P=0.001),矫治后患者的咀嚼效率明显提高.结论 对安氏Ⅱ类2分类错(牙合)患者进行正畸治疗既能改善其外貌,其咀嚼效率也有改善.     

T4K矫治混合牙列期错畸形的临床研究

目的：观察T4K矫治器矫治混合牙列期错畸形的临床效果。方法：选择50例替牙期错畸形患者,年龄7～10岁,戴用澳大利亚Myofunctional Research公司的软硬质T4K矫治器,通过治疗前后的X线头影测量,进行配对t检验。结果：矫治后牙齿排列整齐,牙弓形态标准,ANB、SNB、NP/FH、U1/NA、U1/L1、U1/SN、U1-NA、OJ有显著性变化。口腔不良习惯改善。结论：T4K能有效破除口腔不良习惯,适合混合牙列期部分错畸形的矫治。     

“2×4”矫治技术治疗替牙期前牙反的临床应用16例

目的 探讨"2×4"矫治技术对替牙期前牙反的矫治效果。方法 16例替牙期前牙反患者采用"2×4"矫治技术进行治疗,对矫治前后的X线头影测量进行分析比较。结果 矫治后所有患者反解除,覆覆盖正常,软组织侧貌明显改善。结论 "2×4"矫治技术可以快速有效地解除替牙期前牙反。     

安氏Ⅱ类2分类错的正畸治疗

目的探讨扩弓和Ⅱ类牵引矫治青少年安氏Ⅱ类2分类错的矫治时机及矫治原则。方法青少年安氏Ⅱ类2分类错患者10例,采用扩弓和牵引的方法矫治,比较矫治前后X线头影测量的变化。结果矢状方向上,下颌骨位置(SNB)前移,下颌磨牙位置(L6-Ptm)前移明显;垂直方向上,上下颌后牙齿槽骨高度(U6-PP,L6-MP)增大,尤以L6-MP增大明显;上下切牙明显唇倾,U1-L1明显减小。结论青少年Ⅱ类2分类错非拔牙矫治患者采用扩弓和Ⅱ类牵引矫治可获得满意的疗效。     

矫治乳前牙反对恒牙胚及颌骨位置变化影响的研究

目的研究矫治乳前牙反对恒牙胚及颌骨位置变化的影响。方法选择30例乳前牙反患儿进行矫治,并对治疗前后X线头影测量值的变化进行分析。结果SNG、G-SN、G-SV、SNA、UI/NA、UI-NA、ANB、Wits、NA/PA的增加值,SNB、LI/NB、LI/MP的减小值均具有统计学意义(P<0.05),其余测量值变化无统计学意义(P>0.05)。矫治乳前牙反使上颌骨、乳上切牙明显向前移动,恒牙胚随之唇向移动。结论矫治乳前牙反对预防恒牙期再度出现反有临床意义。     

安氏Ⅱ类1分类错畸形Twin-block结合固定正畸双期矫治的临床疗效分析

目的分析双期矫治安氏Ⅱ类1分类错畸形的治疗效果。方法选择安氏Ⅱ类1分类错畸形17例为研究对象,分别进行Ⅰ期Twin-block功能矫治和Ⅱ期固定矫治,并行X线头颅侧位片进行测量,分析治疗前后硬组织的变化。结果经Ⅰ期和Ⅱ期矫治后,患者通过头影测量分析SNB角增大,ANB角减小,前牙覆盖减小。结论对于生长期的以下颌后缩为主的安氏Ⅱ类1分类错,采用双期矫治有明显效果,对于牙型和面型都有明显的改善。     

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目的研究前方牵引联合唇挡矫治替牙期骨性Ⅲ类错的临床疗效。方法选择2010—2011年大庆油田总医院集团五官医院口腔正畸科门诊就诊的替牙期上颌发育不足的骨性Ⅲ类错患者30例。随机分为试验组和对照组,各15例。试验组使用前方牵引联合唇挡进行矫治;对照组则仅使用前方牵引矫治。在治疗前后对所有患者进行X线头影测量分析并比较组间差异。结果试验组治疗前后变化差值与对照组比较,X线头影测量分析结果显示,SNA、ANB、U1-SN、U1-NA角、U1-NA距、Ptm-U6差异均有统计学意义(P<0.01);模型测量结果显示,TAL、AD、拥挤度差异亦均有统计学意义(P<0.01)。结论采用前方牵引和唇挡联合矫治替牙期骨性Ⅲ类错,可有效消除单一采用前方牵引矫治带来的负面影响,是一种切实可行的办法。     

Twin Force矫治器治疗骨性Ⅲ类错的头影测量研究

目的:将Twin Force矫治器用于矫治恒牙早期轻度骨性安氏Ⅲ类错牙合的矫治,并用X线头影测量评价其临床应用效果。方法:应用反式Twin Force矫治器治疗12例恒牙早期轻度骨性安氏Ⅲ类错牙合,比较治疗前后的X线头影测量结果。结果:经平均8.2个月的治疗,患者的面部轮廓明显改善,前牙的反得以矫治,磨牙关系为I类,SNA和ANB均增加3o,Ptm-A增加2.05mm,而SNB和NPog-FH没有明显变化。结论:反式Twin Force矫治器能够促进上颌发育,迅速有效矫治恒牙早期轻度骨性安氏Ⅲ类错畸形,且患者戴用舒适,易于配合,对患者配合的依赖性较小。     

多曲方丝弓技术矫治骨性Ⅲ类错前后变化的观察

目的对比多曲方丝弓(MEAW)技术矫治骨性Ⅲ类错畸形前后患者X线片变化,探讨MEAW技术矫治骨性Ⅲ类错畸形的机制。方法选用骨性Ⅲ类错畸形患者15例采用0.56mm×0.64mm的直丝弓托槽系统治疗。测量矫治前、后患者的定位X线头颅侧位片并进行比较。结果由于下后牙的远中直立,L6/MP,L7/MP平均增加了7.2°和7.6°,OP-FH平均减少4.23°,OP-MP平均增加5.64°。结论MEAW技术矫治骨性Ⅲ类错畸形主要通过下后牙的远中竖直,以及平面的改变来完成,而矫治前后骨组织及软组织的变化有限。     

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目的研究MBT直丝弓矫治器治疗成年人安氏Ⅱ类1分类并开的临床疗效。方法选择2006年湛江中心人民医院口腔科就诊的24例成年人安氏Ⅱ类1分类并开患者,随机分为两组,试验组(12例)采用MBT直丝弓矫治器治疗,对照组(12例)采用传统直丝弓矫治器治疗。两组均在治疗前后拍摄头颅侧位片,对治疗前后效果的对比及组间比较采用t检验。结果治疗后两组均有效。尤以试验组为优。治疗后试验组U1-Y平均减小5.48mm,U1-SN平均减少6.67°,U1-L1平均增加5.36°,其变化具有统计学意义,SNA、SNB、MP-SN、L1-Y等指标改变不明显。治疗时间平均24.2个月。结论MBT直丝弓矫治器能更有效地矫正上颌前突、前牙开牙合,纠正上唇紧张外翻,协调上下唇软组织关系,改善面型。     

Stability of anterior openbite correction with multiloop edgewise archwire therapy: A cephalometric follow-up study.

Successful treatment of anterior openbite malocclusion is considered one of the most challenging areas in orthodontics. This study was designed to evaluate the treatment effects of the multiloop edgewise archwire therapy in openbite correction and to investigate the stability of correction during a 2-year follow-up period. The subjects consisted of 55 white patients who presented with anterior openbite. The subjects were divided into 2 groups: the growing group included 29 patients and the nongrowing group included 26 patients. The lateral cephalograms were analyzed for skeletal, esthetic, and dentoalveolar changes. Analysis of the pretreatment and posttreatment cephalometric radiographs revealed that the overbite increased an average of 4 mm in both the growing and the nongrowing groups. Analysis of the posttreatment and follow-up cephalometric radiographs proved that the treatment results obtained by this therapy were very stable. The changes in overbite during the 2-year follow-up period were not significant.     

Stability Following Combined Orthodontic-surgical Treatment for Skeletal Anterior Open Bite – a Cephalometric 15-Year Follow-up Study

OBJECTIVE: The aim of the present study was to evaluate the long-term skeletal and dento-alveolar stability 15 years after combined orthodontic and surgical correction of skeletal anterior open bite. PATIENTS AND METHODS: Ten (8 female, 2 male) anterior openbite patients who had undergone orthodontic treatment in combination with bimaxillary surgery at Hanover Medical School were examined. Each patient had undergone Le Fort I osteotomy combined with bilateral sagittal split osteotomy (BSSO); osteosynthesis with plates and screws was carried out in the maxilla, and wire-osteosynthesis in the mandible. Cephalometric records of these patients were examined immediately before the start of the orthodontic treatment (T1), before surgery (T2), immediately after surgery (T3), medium-term after surgery, averaging 1.5 years (T4), and long-term after surgery, averaging 15 years (T5). Hasund cephalometric analysis was performed for which skeletal and dental cephalometric measurements had been taken. RESULTS: Moderate skeletal relapse was observed 15 years after surgery. Overbite remained quite stable 15 years after surgery, which is mainly due to the upper and lower incisors' eruption over the long-term period. CONCLUSION: Treatment of skeletal open bite via Le Fort I and bilateral sagittal split osteotomy appears to be a clinically successful procedure providing stable results.     

钕铁硼永磁体矫治前牙骨性开的X线头影测量分析

应用第三代稀土永磁体钕铁硼制成垫式活动矫治器对８例前牙骨性开患者进行畸形矫治。通过矫治前后的Ｘ线头影测量分析评价其疗效。结果表明：第三代稀土永磁体钕铁硼用于前牙骨性开畸形的矫治是可行的。磁力矫治后患者的上下磨牙的压入值、下颌平面角的减小值及前下面高的降低值均有显著变化     

Stability of maxillary surgery in openbite versus nonopenbite malocclusions

Lateral cephalometric radiographs were evaluated to determine the posttreatment stability of 66 patients treated with LeFort I osteotomies to reposition their maxillae superiorly. The sample was divided into three groups based on the degree of pretreatment overbite: openbite subsample--no incisal overlap; overlap subsample--incisal overlap and no incisal contact; contact subsample--incisal overlap with incisal contact. The cephalograms were superimposed and linear measurements were made at each interval (pretreatment, posttreatment, and at least one year posttreatment). The results clearly show that the three subsamples reacted differently during the posttreatment interval. 42.9 percent of the subsample with pretreatment openbite showed a significant increase in facial height, significant eruption of maxillary molars, and a significant decrease in overbite. 28.6 percent of the openbite subsample and 16.7 percent of the overlap subsample showed a significant increase in facial height, significant eruption of maxillary incisors, and no change in overbite. The contact subsample had no significant posttreatment changes. Possible reasons for the posttreatment instability in the openbite subsample are proposed.     

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目的    探讨拔除下颌第二磨牙结合多曲唇弓（MEAW）技术矫治恒牙期骨性Ⅲ类错牙合的疗效。方法    选择2005年1月至2008年2月黑龙江省口腔病防治院正畸科就诊的7例恒牙期骨性Ⅲ类错牙合非手术患者，男3例，女4例；年龄13～16岁，平均14.3岁。所有患者均采用拔除下颌第二磨牙结合MEAW技术进行矫治，对比分析矫治前后的头影测量数据。结果    矫治后所有患者磨牙关系及尖牙关系均达到中性，前牙反牙合解除，达到正常覆牙合和覆盖关系，所有患者的软组织侧貌得到改善。下颌第一磨牙平均向远中移动3.1 mm，下颌切牙平均舌向移动2.8 mm，上齿槽座点、鼻根点与下齿槽座点构成的角（ANB角）平均增加1.2°，差异均有统计学意义（P < 0.05）。结论    拔除下颌第二磨牙结合MEAW技术矫治，适用于下颌第三磨牙牙胚正常，下颌牙弓有拥挤需要拔牙且有开牙合倾向的恒牙期骨性Ⅲ类错牙合非手术患者。     

改良头颅侧位定位X线摄片在腭咽造影的定量研究

作者从１９９３年１月～１９９４年１月，对以腭裂术后语音障碍为主的患者２０例，正常语音者１５例进行了改良头颅侧位定位Ｘ线摄片检查。将静态和动态时的腭咽形态分别记录在两张Ｘ线片上，两组之间进行了对照性的定量研究，结果表明，语音障碍组静态时的软腭长度，厚度是１９．９０ｍｍ，５．７７ｍｍ，正常语音组的软腭长度是３４．９２ｍｍ，７．０７ｍｍ。本研究结果对临床检查和治疗前后的比较有一定参考作用。与传统的头颅定位Ｘ线摄片相比较，有着操作简单，定位准确，容易固定，经济实用，能直视动态和同步摄片，录像等优点。     

潜在性开（牙合）的矫治

目的　探讨潜在性开的矫治方法。方法　采用高位口外牵引、口内腭杆、细丝轻力、后倾曲、前牙区垂直牵引等矫治方法 ,对 15例潜在性开牙合患者进行矫治。结果　全部病例的开牙合均未表现出来 ,达到正常覆盖、覆牙合关系。结论　对潜在性开牙合患者实施矫治时 ,术前诊断明确 ,术中防止磨牙伸长、倾斜 ,竖直倾斜磨牙 ,防止前牙压低十分重要     

两种支抗配合MBT直丝弓技术矫治双颌前突的效果比较

目的 比较J钩和种植体支抗配合MBT直丝弓技术矫治双颌前突病例的矫治效果,以及支抗对磨牙的控制作用.方法 30例需最大支抗的双颌前突病例(男性12例,女性18例),采用MBT直丝弓矫治技术,分别配合J钩(15例,A组)和种植体支抗(15例,B组)控制磨牙,对治疗前后的头颅侧位X线片进行头影测量分析,并对结果进行统计学分析.结果 虽然矫治前A组和B组U6C-PP分别为(12.4±0.2)mm和(12.5±0.1)mm,治疗后两组U6C-PP分别为(12.6±0.1)mm和(12.8±0.1)mm,差异有统计学意义(P＜0.01),但两组矫治结果临床差异不显著;两组其余指标差异均无统计学意义(P＞O.05).结论 J钩和种植体支抗配合MBT技术矫治双颌前突病例,均能控制支抗磨牙,且在支抗控制上两者无明显差异.