口腔生物医学
口腔生物醫學
구강생물의학
ORAL BIOMEDICINE
2013年
4期
181-185
,共5页
孔娜娜%苗芬%袁华%孙超%陈宁
孔娜娜%苗芬%袁華%孫超%陳寧
공나나%묘분%원화%손초%진저
颌骨%下颌前牙区%锥形束CT%口腔种植
頜骨%下頜前牙區%錐形束CT%口腔種植
합골%하합전아구%추형속CT%구강충식
Jaw bone%Anterior mandible%Cone beam computed tomography%Dental implant
目的:利用锥形束CT(cone beam computed tomography ,CBCT)图像研究测量下颌前牙区的颌骨形态和宽度,为临床种植手术提供治疗依据。方法:选取2011年-2013年间50名成年受试者的CBCT检查结果,利用CBCT图像对下颌前牙区颌骨外形、唇舌侧宽度、近远中距离等进行观察和测量。结果:1.下颌前牙区颌骨形态唇侧均为凹形,最凹点位于下颌骨上中份,舌侧外形多样化,凸形比例最高。2.下颌骨前牙区颌骨唇舌侧宽度在下颌骨中1/2和下颌骨下缘较宽,在牙槽嵴顶和根尖区较窄。3.左右尖牙、侧切牙、中切牙于牙槽嵴顶的近远中距离是4.46~6.94 mm,尖牙最长,侧切牙次之,中切牙最小。结论:下颌前牙缺失后,尤其是下颌侧切牙或中切牙个别缺失,如行种植修复近远中距离可能不足,易损伤邻牙;植入种植体等手术时应当注意下前牙区颌骨外形,避免因倒凹导致唇舌侧穿通;CBCT可作为下颌前牙区种植手术术前的常规影像学检查手段。
目的:利用錐形束CT(cone beam computed tomography ,CBCT)圖像研究測量下頜前牙區的頜骨形態和寬度,為臨床種植手術提供治療依據。方法:選取2011年-2013年間50名成年受試者的CBCT檢查結果,利用CBCT圖像對下頜前牙區頜骨外形、脣舌側寬度、近遠中距離等進行觀察和測量。結果:1.下頜前牙區頜骨形態脣側均為凹形,最凹點位于下頜骨上中份,舌側外形多樣化,凸形比例最高。2.下頜骨前牙區頜骨脣舌側寬度在下頜骨中1/2和下頜骨下緣較寬,在牙槽嵴頂和根尖區較窄。3.左右尖牙、側切牙、中切牙于牙槽嵴頂的近遠中距離是4.46~6.94 mm,尖牙最長,側切牙次之,中切牙最小。結論:下頜前牙缺失後,尤其是下頜側切牙或中切牙箇彆缺失,如行種植脩複近遠中距離可能不足,易損傷鄰牙;植入種植體等手術時應噹註意下前牙區頜骨外形,避免因倒凹導緻脣舌側穿通;CBCT可作為下頜前牙區種植手術術前的常規影像學檢查手段。
목적:이용추형속CT(cone beam computed tomography ,CBCT)도상연구측량하합전아구적합골형태화관도,위림상충식수술제공치료의거。방법:선취2011년-2013년간50명성년수시자적CBCT검사결과,이용CBCT도상대하합전아구합골외형、진설측관도、근원중거리등진행관찰화측량。결과:1.하합전아구합골형태진측균위요형,최요점위우하합골상중빈,설측외형다양화,철형비례최고。2.하합골전아구합골진설측관도재하합골중1/2화하합골하연교관,재아조척정화근첨구교착。3.좌우첨아、측절아、중절아우아조척정적근원중거리시4.46~6.94 mm,첨아최장,측절아차지,중절아최소。결론:하합전아결실후,우기시하합측절아혹중절아개별결실,여행충식수복근원중거리가능불족,역손상린아;식입충식체등수술시응당주의하전아구합골외형,피면인도요도치진설측천통;CBCT가작위하합전아구충식수술술전적상규영상학검사수단。
Objective:To investigate and measure anterior mandibular jaw bone for clinical application using cone beam computed tomography (CBCT).Methods:Fifty Han-Chinese adults were selected in this study between Jan .2011 and Jan.2013.All CBCTs of the 50 adults were reconstructed to evaluate and measure the shape , bucca-lingual width and mesial and distal distance at alveolar crest of anterior region of mandible .Results:Buccal shape of anterior mandible was concave in all cases and the most concave point was lo -cated on the upper and middle one third of mandible mostly .Shape of lingual was diversified , and those of convex account for a high percentage .For the bucca-lingual width , middle and lower margin of anterior mandibular jaw bone were wider than that of alveolar crest and apex of tooth.Mesial and distal distance at alveolar crest of anterior mandible were between 4.46mm and 6.94 mm, canine had maximum distance , lateral incisor was next to canine and central incisor had minimum distance .Conclusions:When implanting in mandibular anterior alveolar , especially in the case of single central incisor or lateral incisor missing , implant may not achieve enough space and adjacent teeth were easy to be affected .Care should be taken of the shape of mandible to avoid buccal and lingual penetration when doing implant surgery in anterior mandible .It was suggested that CBCT should be a routine examination before implant surgery .