重庆医学
重慶醫學
중경의학
CHONGQING MEDICAL JOURNAL
2015年
2期
221-223
,共3页
骨和骨组织%颊%牙槽突%骨皮质厚度%锥束CT
骨和骨組織%頰%牙槽突%骨皮質厚度%錐束CT
골화골조직%협%아조돌%골피질후도%추속CT
bone and bones%cheek%alveolar process%cortical bone thickness%cone-beam CT (CBCT)
目的：通过对恒牙列初期安氏Ⅱ类1分类错?儿童的上颌后牙区微种植体支抗植入区域进行分析，测量骨皮质厚度，为儿童临床种植体支抗植入提供理论依据，对植入点的选择提供一定参考。方法选取40例恒牙列初期安氏Ⅱ类1分类儿童患者的锥束CT影像资料，男、女各20例，分别测量双侧上颌第二前磨牙与第一恒磨牙根间区距牙槽嵴顶3～9mm处，共7个平面的骨皮质厚度，对结果进行统计分析。结果上颌第二前磨牙与第一恒磨牙根间区的骨皮质厚度在7个测量平面中，距牙槽嵴顶高度4mm处最小（P＜0．05），5mm以上的骨皮质厚度随距牙槽嵴顶距离的增加而增大，男女对象在7、8、9mm处差异均有统计学意义，男大于女（P＜0．05）。结论恒牙列初期安氏Ⅱ类1分类儿童患者的后牙区颊侧骨皮质厚度随垂直向位置的增加而增大，微种植体支抗植入时应尽可能选择距牙槽嵴顶5mm以上的位置，以提高植入的成功率。
目的：通過對恆牙列初期安氏Ⅱ類1分類錯?兒童的上頜後牙區微種植體支抗植入區域進行分析，測量骨皮質厚度，為兒童臨床種植體支抗植入提供理論依據，對植入點的選擇提供一定參攷。方法選取40例恆牙列初期安氏Ⅱ類1分類兒童患者的錐束CT影像資料，男、女各20例，分彆測量雙側上頜第二前磨牙與第一恆磨牙根間區距牙槽嵴頂3～9mm處，共7箇平麵的骨皮質厚度，對結果進行統計分析。結果上頜第二前磨牙與第一恆磨牙根間區的骨皮質厚度在7箇測量平麵中，距牙槽嵴頂高度4mm處最小（P＜0．05），5mm以上的骨皮質厚度隨距牙槽嵴頂距離的增加而增大，男女對象在7、8、9mm處差異均有統計學意義，男大于女（P＜0．05）。結論恆牙列初期安氏Ⅱ類1分類兒童患者的後牙區頰側骨皮質厚度隨垂直嚮位置的增加而增大，微種植體支抗植入時應儘可能選擇距牙槽嵴頂5mm以上的位置，以提高植入的成功率。
목적：통과대항아렬초기안씨Ⅱ류1분류착?인동적상합후아구미충식체지항식입구역진행분석，측량골피질후도，위인동림상충식체지항식입제공이론의거，대식입점적선택제공일정삼고。방법선취40례항아렬초기안씨Ⅱ류1분류인동환자적추속CT영상자료，남、녀각20례，분별측량쌍측상합제이전마아여제일항마아근간구거아조척정3～9mm처，공7개평면적골피질후도，대결과진행통계분석。결과상합제이전마아여제일항마아근간구적골피질후도재7개측량평면중，거아조척정고도4mm처최소（P＜0．05），5mm이상적골피질후도수거아조척정거리적증가이증대，남녀대상재7、8、9mm처차이균유통계학의의，남대우녀（P＜0．05）。결론항아렬초기안씨Ⅱ류1분류인동환자적후아구협측골피질후도수수직향위치적증가이증대，미충식체지항식입시응진가능선택거아조척정5mm이상적위치，이제고식입적성공솔。
Objective To quantitatively evaluate the thickness of the buccal cortical bone in the posterior region of the maxillary for orthodontic micro‐implants in children .Methods Forty children (20 males and 20 females) in permanent dentition with Class Ⅱdivision 1 malocclusion were selected .The maxillary posterior alveolar bones of the subjects were scanned and reconstructed by cone‐beam computed tomography (CBCT) .The thickness of the cortical bone between the dental roots of the second upper premolar and the first upper molar at the height of 3 ,4 ,5 ,6 ,7 ,8 ,9 mm from the alveolar crest were determined .The data were analyzed sta‐tistically .Results The thickness of the cortical bone between the second upper premolar and the first upper molar was minimum at the height of 4 mm from the alveolar crest(P<0 .05) .The thickness of the cortical bone increased along with the distance increas‐ing from the alveolar crest at the height of 5 mm .The cortical bones in male were significantly thicker than those in female at the height of 7 ,8 ,9 mm (P<0 .05) .Conclusion The thickness of the buccal corticalbone in children in permanent dentition with ClassⅡ division 1 malocclusion changes with the measured vertical position .Micro‐implant anchorage is better to be placed in the area with a distance of 5 mm from the alveolar crest .
