微型种植支抗和口外支抗用于上颌前突畸形的效果比较  

Effect comparison of mini implant anchorage and extraoral anchorage for maxillary protrusion deformity

作　　者：魏威[1] 龚仁国[1] 肖海鹰[1] 

机构地区：[1]四川省攀枝花市中西医结合医院口腔科,四川攀枝花617000

出　　处：《中国医药导报》2016年第24期125-128,共4页China Medical Herald

基　　金：四川省攀枝花市科技计划项目(2011CY-S-11)

摘　　要：目的比较微型种植支抗与口外支抗矫治上颌前突畸形的疗效。方法从2011年3月～2013年2月于攀枝花市中西医结合医院就诊的患者中筛选出符合纳入条件的矫治结束的48例受试者，按照随机数字表法将其分为两组，微型种植支抗组（n=24）受试者应用微型种植支抗来加强支抗力度，口外支抗组（n=24）受试者应用头帽13外弓来加强支抗力度。测量其头颅侧位片。统计上颌中切牙内收量和压低量的变化值，上颌第一磨牙伸长与近中移动量，上颌中切牙倾斜度的变化值，猞平面、下颌平面以及前颅底平面的位置变化。结果13外支抗组治平面与前颅底平面的交角（SN—OP）、前颅底平面的相对倾斜度（U1-SN）矫治前后比较差异有统计学意义（P〈0．05），微型种植支抗组上颌突度（SNA）、SN—OP、U1-SN、上齿槽座点A至Nv的垂直距离（A—Nv）及上颌中切牙相的突度（U1-NP）矫治前后比较差异有统计学意义（P〈0．05），微型种植支抗组矫治后的SNA、U1-SN、A—Nv、U1-NP明显好于口外支抗组，差异有统计学意义（P〈0．05），即微型种植支抗组比口外支抗组切牙内收更多，且上颌第一磨牙的近中移动更少。结论微型种植体比传统口外支抗在上颌前突的治疗中，前者可更好地改善患者的前突面型，有助于上颌前突的矫治。Objective To compare the therapeutic effect of mini implant anchorage and extraoral anchorage for maxillary protrusion deformity. Methods 48 cases of research objects after the end of correction confirmed to the inclusion criteria were screened from the patients treated in Integrated Traditional Chinese and Western Medicine Hospital of Panzhihua City from March 2011 to February 2013, and they were divided into two groups by random number table, micro implant anchorage group （n = 24） was treated with micro implant to strengthen the anchorage force, the extraoral anchorage group （n = 24） was treated with headgear facebow to strengthen the anchorage force. The lateral cephalogram of the subjects was measured. The changes of maxillary central incisor retraction and depress, the changes of the maxil- lary first molar mesial movement and elongation, maxillary central incisors of the dip slope changes, and the relative position of mandibular plane and anterior skull base plane were recoreded. Results The differences of SN-OP and U1- SN of extraoral anchorage group before treatment and after treatment were statistically significant （P 〈 0.05）, the differ- ences of SNA, SN-OP, U1-SN, A-Nv and U1-NP of micro implant anchorage group before and after treatment were statistically significant （P 〈 0.05）, SNA, U1-SN, A-Nv and U1-NP of micro implant anchorage group after treatment were better than those of extraoral anchorage group, the differences were all statistically significant （P 〈 0.05）. The adduction degree of the micro implant anchorage group was higher than the extraoral anchorage group. And the maxillary first molar was moved less in the near. Conclusion The micro implant anchorage have better control role for the forward and backward direction than the conventional extraoral anchor anti in the treatment of maxillary protrusion, the therapy can improve the treatment of protrusion type and contribute to the maxillary protrusion.

关 键 词：微型种植支抗 口外支抗 上颌前突畸形 非拔牙矫治 牙齿移动 

分 类 号：R783.5[医药卫生—口腔医学]