前方牵引器治疗安氏Ⅲ类错畸形的临床研究  

Treatment Effects of Face Mask in Correction Class Ⅲ Malocclusion.

作　　者：梁芮[1] 辜岷[1] 李加志[1] 

机构地区：[1]广东省深圳市红十字会医院口腔中心正畸科,518035

出　　处：《广东牙病防治》2001年第2期103-104,共2页Journal of Dental Prevention and Treatment

摘　　要：目的　探讨前方牵引器对替牙牙合期安氏Ⅲ类错牙合前牙反牙合中颌骨和牙齿的作用和影响。方法　对 17例安氏Ⅲ类错牙合替牙早期患者使用前方牵引器治疗 ,并对治疗前、后及治疗后 2年的头颅侧位片进行X线头影测量和分析。结果　治疗后SNA角增大 3.0 3° ,ANB角由 - 3.31°增至 1.0 2° ,NA -PA角增大 3.0 2° ,有显著性变化。治疗后 2年发现SNA角增大 4.2 4° ,A’ -Ptm’增加 3.4mm。结论　上颌前牵引治疗后上颌基骨明显、稳定地增长 。Objective To study skeletal and dental changes in correction of anterior cross-bite by face mask in the period of mixed dentition. Method 17 patients with anterior cross-bite were selected and treated with facs mask in the early mixed dentition. Lateral cephalometric roentgenograms were taken before and after and 2 year after treatment. Results SNA increased 3.03°and ANB enlarged from -3.31°to 1.022°, NA-PA increased 3.02°at the end of the treatment, SNA and A'-Ptm' increased 4.24° and 3.4 mm respectively at 2 years after treatment. Conclusious The maxillary had a marked change after anterior traction. The maxillary basal bone grew obviously and steadily. However, the mandibular had tendency growth forwards. Keyword Face mask Cross-bite]Dong Lei,Zhao Xiaofeng, Liu Lanfen et al .General Hospital of Ji′nanDong Lei,Zhao Xiaofeng, Liu Lanfen et al .General Hospital of Ji′nanCommand,Ji′nan 250031 Abstract The present study was performed to investigate the relationship between the countercurrent of portal vein and intrahepatic cancerometastasis in patients with hepatic carcinoma under color Doppler flow imaging.To display the situation of portal carcinomatous thrombosis and intrahepatic cancerometastasis, two dimensional ultrasound was carried out in patients with hepatitis hepatocarcinoma and non hepatitis hepatocarcinoma. Also, color Doppler flow imaging was employed to examine the incidence of the pylic countercurrent and the portal vein hepatic artery fistula in four groups: hepatitis hepatocarcinoma group, non-hepatitis hepatocarcinoma group, hepatocirrhosis group and control group. The results showed that the incidences of portal carcinomatous thrombosis,intrahepatic cancerometastasis and the incidences of the countercurrent in portal vein were higher in hepatitis hepatocarcinoma group than those in non hepatitis hepatocarcinoma group ( P <0.01), but the incidence of the portal vein hepatic artery fistula was not markedly different between hepatitis hepatocarcinom

关 键 词：前方牵引器 反HE 错HE 口腔正畸 

分 类 号：R783.5[医药卫生—口腔医学]