改良型BIONATOR矫治反He颅颌面长宽高结构改变的研究

目的研究改良型BIONATOR矫治早期反He颅颌面结构的改变情况。方法采用改良型BIONATOR矫治乳牙期及替牙期前牙反He32人，对治疗前后的牙He模型，薛氏位关节片、头颅侧位片进行测量分析。结果治疗前后上下颌牙弓宽度无明显改变，上颌长度及突度增大，上切牙唇倾。下颌髁突后退至正常位，上下颌基骨关系明显改善，乳牙反He矫治后呈Ⅰ类骨面型，替牙期反He矫治后仍遗留一些骨骼异常，骨面型仍属Ⅲ类。结论改良型BIONATOR矫治反He能有效促进上颌生长，抑制下颌生长，使颅颌面的生长方向趋于正常。     

改良型Bionator矫治反牙合的头影测量研究

目的　研究改良型Bionator矫治器矫治早期反牙合颅颌面的改变。方法　采用改良型Bionator矫治器矫治乳牙期及替牙期前牙反牙合88例 ,对治疗前后的头颅侧位片头影侧量分析研究。结果　矫治后上颌长度及突度增大 ,上切牙唇倾 ;下颌髁突后退至正常位 ,上下颌基骨关系明显改善 ,乳牙反牙合改变最明显 ,矫治后呈Ⅰ类骨面型。替牙期反牙合矫治后仍遗留骨骼异常 ,骨面型仍属Ⅲ类 ,下切牙舌倾及颏角变小更趋严重 ;下面高及后面高增加。结论　改良型Bionator矫治反牙合 ,能有效促进上颌生长 ,抑制下颌生长 ,使颅颌面的生长方向趋向正常     

改良型Bionator矫治反He的头影测量研究

目的：研究改良型Bionator矫治器矫治早期反He颅颌面的改变。方法：采用改良型Bionator矫治器矫治乳牙期及替牙期前牙反He88例，对治疗前后的头颅侧位片头影测量分析研究。结果：矫治后上颌长度及突度增大，上切牙唇倾；下颌髁突后退至正常位，上下颌基骨关系明显改善，乳牙反He改变最明显，矫治后呈I类骨面型。替牙期反He矫治后仍遗留肌骼异常，面型仍属Ⅲ类，琥发牙舌倾及颏角变小更趋严重；下面高及后面高增加。结论：改良型Bionator矫治反He，能有效促进上颌生长抑制下颌生长，使颅颌面的生长方向趋向正常。     

FR3矫治乳牙期、替牙期前牙反的头影测量对比研究

目的为观察FR3矫治前牙反的效果，尤其是矫治疗后颅面形态的改变。方法采用FR3对17例乳牙期和10例替牙期前牙反患者进行矫治，通过头影测量分析其矫治前后的变化及矫治后与正常值的差异。结果FR3能促进上颌生长发育，唇倾上切牙；使下颌后退，有效地改善异常的间关系，乳牙期反矫治后，除下切牙舌倾、颏角尖锐外，基本恢复Ⅰ类骨面型，矫治效果好。替牙期反由于骨骼异常较严重，因而矫治后虽面型得到很大改善，但仍然遗留部分Ⅲ类骨面型。结论用FR3矫治前牙反宜早不宜迟。     

FR3矫治乳牙期,替牙期前牙反He的头影测量对比研究

目的 为观察ＦＲ３矫治前牙反Ｈｅ的效果，尤其是矫治疗后颅面形态的改变。方法 采用ＦＲ３对１７例乳牙期和１０例替牙期前牙反Ｈｅ患者进行矫治，通过头影响测量分析其矫治前后的变化及矫治后与正常值的差异。结果 ＦＲ３能促进上颌生长发育，唇倾上切牙；使下颌后退，有效地改善异常的Ｈｅ间关系，乳牙期反Ｈｅ矫治后，除下切牙舌倾、颏角尖锐外、基本恢复Ⅰ类骨面型，矫治效果好。替牙期反Ｈｅ由于骨骼异常较严重，因而矫治后     

改良矫治器矫治儿童前牙反(牙合)25例

目的 观察替牙期及乳牙期前牙反(牙合)矫治的效果.方法 通过改良的活动矫治器对25例替牙期乳牙期前牙反(牙合)进行矫治.结果 前牙反(牙合)解除快速有效,并使上下颌骨生长向正常方向转化.结论 3～5岁为乳牙反(牙合)矫治的合适年龄;改良式导弓可促使上下颌骨正常生长,而且解除反(牙合)方法简便,疗程短.     

螺旋簧前方扩弓器矫治前段牙弓发育不足的效果评价

目的 评估螺旋簧前方扩弓器矫治前段牙弓发育不足的前牙反牙合患者的疗效及机制.方法 选择乳牙期或替牙期早期上颌前段牙弓发育不足前牙反牙合患者20例,采用带螺旋扩大器的上颌牙合垫矫治器进行上颌前方扩弓矫治.治疗前后拍摄头颅侧位片并测量,进行符号秩和检验.结果 经过约5个月的矫治,所有患者的前牙反牙合均得到纠正.治疗后SNA、SNPr、U1-NA、U1-PNS、Wits值及上颌牙弓长度均有显著增加(P<0.05).结论 螺旋簧前方扩弓器可以快速纠正乳牙期或替牙期前牙反牙合,显著增加上颌基骨长度及牙弓长度.     

螺旋簧前方扩弓器矫治前段牙弓发育不足的效果评价

目的 评估螺旋簧前方扩弓器矫治前段牙弓发育不足的前牙反牙合患者的疗效及机制.方法 选择乳牙期或替牙期早期上颌前段牙弓发育不足前牙反牙合患者20例,采用带螺旋扩大器的上颌牙合垫矫治器进行上颌前方扩弓矫治.治疗前后拍摄头颅侧位片并测量,进行符号秩和检验.结果 经过约5个月的矫治,所有患者的前牙反牙合均得到纠正.治疗后SNA、SNPr、U1-NA、U1-PNS、Wits值及上颌牙弓长度均有显著增加(P<0.05).结论 螺旋簧前方扩弓器可以快速纠正乳牙期或替牙期前牙反牙合,显著增加上颌基骨长度及牙弓长度.     

单侧完全性唇腭裂术后反(牙合)患者替牙期颅面生长发育的分析研究

目的探讨单侧完全性唇腭裂前牙反(牙合)患者手术后替牙期的纵向颅面生长发育特征.方法对14名男性单侧完全性唇腭裂术后前牙反(牙合)患者的头颅定位侧位片进行回顾性分析,前后两次拍片的间隔时间平均24.2个月,第二张X光片处于生长发育高峰前期,测量分析牙颌面的变化,应用SAS8.0统计软件作配对t检验.结果反映上颌的后部位置和大小的指标Ptm-S(FH)、Ptm'-A'(FH),Ptm'-A'(PP)的变化没有统计学意义;下颌的长度增加明显;反映上下颌矢向关系的ANB、A-NPg减小;上下颌长度的差值增大.两年间U1-SN增大,L1-MP保持不变,覆盖保持不变.鼻唇角明显减小.结论单侧完全性唇腭裂前牙反(牙合)患者手术后替牙期两年间上颌生长不明显,上下颌骨关系和面型有Ⅲ类倾向,上颌切牙有代偿性唇向倾斜的趋势,以维持原有的覆盖关系.     

FR_3矫治乳牙期反颅面宽度和高度改变的研究(附1例报告)

采用FR3矫治乳牙期反邪合30人, 对治疗前后的牙邪合模型、头影侧位片进行测量分析, 研究FR3矫治牙期反邪合颅面宽度和高度的改变情况, 结果显示： ①　上下颌牙弓宽度治疗前后无明显改变; ②下面高及后面高增加。     

Clinical experiences with patients with facial bone deformities associated with hemifacial microsomia.

Eighteen adult patients with hemifacial microsomia were treated with a combination of skeletal and augmentation surgery. Three typical cases are presented. In principle, skeletal and augmentation surgery have recently been performed in combination in a single stage. Groin flaps and scapular or scapular ostocutaneous flaps have mainly been employed for augmentation surgery.     

Vasovagal syncope with asystole associated with intravenous access

Two cases of vasovagal syncope (VVS) during venous access are reported. Both patients had a history of fainting episodes and experienced bradycardia with asystole, hypotension, and fainting. Pain and phobic stress during venous access triggered an increase in parasympathetic tone, resulting in bradycardia with asystole and hypotension in both cases. Hypotension and bradycardia likely caused cerebral hypoperfusion, leading to fainting. The intense parasympathetic tone triggered by somatic or emotional stress was likely responsible for directly depressing the sinus node, leading to asystole and bradycardia. Bradycardia with asystole progressing to syncope is a potentially fatal dysrhythmia in patients with cardiovascular disease or older patients with decreased cardiac function. Appropriate treatment for VVS includes the administration of intravenous fluids, vagolytics, ephedrine, and the rapid use of the Trendelenburg position. Intravenous fluids and atropine were used to treat the present patients.     

Inflammation associated with implants with different surface types

OBJECTIVES: The aim of this study was to determine the nature of the inflammatory infiltrate associated with different transmucosal implant surfaces in dogs. METHODS: Three experimental and one control single-stage implants were randomly placed on each side of the jaw in eight dogs. The transmucosal portion of the test implants consisted of an acid-etched surface (type A), a machined surface with a circumferential groove (type C) and a surface prepared by mild anodic oxidation (type D). The control was a standard machined surface (type B). In order to determine the response to the different surfaces, plaque control was carried out twice weekly following placement of the implants for the entire period of the experiment. At 6 months, gingival biopsies and plaque samples were obtained. The area of inflammatory infiltrate and the nature of the infiltrating cell types were determined using immunohistology. Real-time polymerase chain reaction was used to identify putative periodontal pathogens. RESULTS: Inflammatory infiltrates were associated with all implant surfaces and were commonly found subepithelially and perivascularly. T cells were the predominant infiltrating cell type in all lesions, associated with the different surfaces. In all lesions the CD4 : CD8 ratio was approximately 2 : 1. Statistical analysis showed that the type C surface (machined surface with a groove) had significantly larger inflammatory infiltrates than the type B surface (machined surface without a groove; P<0.05). No statistically significant differences were found with respect to the size of the inflammatory infiltrates or in terms of the nature of infiltrating cells. However, despite the intensive plaque control regime, plaque was present on all implant surfaces at the time of biopsy 6 months after placement. All implants had similar numbers of Tannerella forsythia, Fusobacterium nucleatum and Porphyromonas gingivalis. Actinobacillus actinomycetemcomitans, was not detected in any sample. CONCLUSIONS: These results suggest that the development of inflammation associated with implants is independent of surface type, but is nevertheless associated with the presence of plaque. The different surfaces had no influence on the nature of the infiltrate, with T cells being the predominant cell type in all lesions. Finally, the different implant surface types seemed not to influence the peri-implant microbiota. However, the presence of the circumferential groove tended to be associated with larger infiltrates. Whether this is due to increased plaque accumulation remains to be determined.     

Recurrent intraoral pyogenic granuloma with satellitosis treated with corticosteroids

The development of recurrent pyogenic granulomas as multiple satellite lesions has not been reported in the oral cavity. This report describes an unusual case of intraoral pyogenic granuloma recurring multiple times after surgical excisions with the formation of satellite lesions. Due to failure of surgical management, an alternative approach was taken. We illustrate how the lesions were successfully treated with a series of intralesional corticosteroid injections.