中华口腔医学杂志
中華口腔醫學雜誌
중화구강의학잡지
Chinese Journal of Stomatology
2010年
6期
370-375
,共6页
林雪峰%李少华%黄卓珊%吴夏怡
林雪峰%李少華%黃卓珊%吳夏怡
림설봉%리소화%황탁산%오하이
牙(牙合)%咀嚼%头影测量
牙(牙閤)%咀嚼%頭影測量
아(아합)%저작%두영측량
Dental occulsion%Mastication%Cephalometrics
目的 分析个别正常(牙合)青年(牙合)平面与咀嚼运动轨迹特征的相关性,以期为临床定位(牙合)平面提供参考.方法 收集43名个别正常(牙合)青年志愿者,拍摄头颅侧位X线片,测量耠平面倾斜度(OP-CP);记录下颌中切牙切点的左右侧咀嚼运动轨迹,测量矢状面垂直向最大位移(V)、矢状面水平向前后最大位移之和(P+A)、冠状面水平向左右侧方位移之和(L+R)以及(牙合)平面与咀嚼运动轨迹的夹角,对(牙合)平面倾斜度(OP-CP)与V、(P+A)、(L+R)以及(牙合)平面与咀嚼运动轨迹的夹角进行Pearson线性相关分析.结果 OP-CP为(2.1±3.8)°.V为(20.22±4.28)mm,(P+A)为(11.42±2.45)mm,(L+R)为(8.62±1.52)mm.OP-CP与(L+R)呈负相关,相关系数r为-0.39(P<0.05).矢状面(牙合)平面与牙尖交错位及其附近的咀嚼运动开闭口轨迹近似垂直;OP-CP与咀嚼运动轨迹(牙合)期阶段2.0 mm、(牙合)外期上段的(牙合)平面-闭口轨迹角呈正相关(P<0.05);咀嚼轴角平均为(66.50±7.98)°,与OP-CP不相关(P>0.05).结论 矢状面(牙合)平面倾斜度与咀嚼运动轨迹有一定相关性.(牙合)平面对咀嚼运动(牙合)期闭合轨迹的影响较明显.
目的 分析箇彆正常(牙閤)青年(牙閤)平麵與咀嚼運動軌跡特徵的相關性,以期為臨床定位(牙閤)平麵提供參攷.方法 收集43名箇彆正常(牙閤)青年誌願者,拍攝頭顱側位X線片,測量耠平麵傾斜度(OP-CP);記錄下頜中切牙切點的左右側咀嚼運動軌跡,測量矢狀麵垂直嚮最大位移(V)、矢狀麵水平嚮前後最大位移之和(P+A)、冠狀麵水平嚮左右側方位移之和(L+R)以及(牙閤)平麵與咀嚼運動軌跡的夾角,對(牙閤)平麵傾斜度(OP-CP)與V、(P+A)、(L+R)以及(牙閤)平麵與咀嚼運動軌跡的夾角進行Pearson線性相關分析.結果 OP-CP為(2.1±3.8)°.V為(20.22±4.28)mm,(P+A)為(11.42±2.45)mm,(L+R)為(8.62±1.52)mm.OP-CP與(L+R)呈負相關,相關繫數r為-0.39(P<0.05).矢狀麵(牙閤)平麵與牙尖交錯位及其附近的咀嚼運動開閉口軌跡近似垂直;OP-CP與咀嚼運動軌跡(牙閤)期階段2.0 mm、(牙閤)外期上段的(牙閤)平麵-閉口軌跡角呈正相關(P<0.05);咀嚼軸角平均為(66.50±7.98)°,與OP-CP不相關(P>0.05).結論 矢狀麵(牙閤)平麵傾斜度與咀嚼運動軌跡有一定相關性.(牙閤)平麵對咀嚼運動(牙閤)期閉閤軌跡的影響較明顯.
목적 분석개별정상(아합)청년(아합)평면여저작운동궤적특정적상관성,이기위림상정위(아합)평면제공삼고.방법 수집43명개별정상(아합)청년지원자,박섭두로측위X선편,측량합평면경사도(OP-CP);기록하합중절아절점적좌우측저작운동궤적,측량시상면수직향최대위이(V)、시상면수평향전후최대위이지화(P+A)、관상면수평향좌우측방위이지화(L+R)이급(아합)평면여저작운동궤적적협각,대(아합)평면경사도(OP-CP)여V、(P+A)、(L+R)이급(아합)평면여저작운동궤적적협각진행Pearson선성상관분석.결과 OP-CP위(2.1±3.8)°.V위(20.22±4.28)mm,(P+A)위(11.42±2.45)mm,(L+R)위(8.62±1.52)mm.OP-CP여(L+R)정부상관,상관계수r위-0.39(P<0.05).시상면(아합)평면여아첨교착위급기부근적저작운동개폐구궤적근사수직;OP-CP여저작운동궤적(아합)기계단2.0 mm、(아합)외기상단적(아합)평면-폐구궤적각정정상관(P<0.05);저작축각평균위(66.50±7.98)°,여OP-CP불상관(P>0.05).결론 시상면(아합)평면경사도여저작운동궤적유일정상관성.(아합)평면대저작운동(아합)기폐합궤적적영향교명현.
Objective To investigate the characteristics of and relationship between occlusal plane and masticatory path in young adults with individual normal occlusion, and to provide clinical implications on both morphological and functional reference of occlusal plane location Methods Forty-three young adults with individual normal occlusion were included. Lateral projections of cephalometric radiographs were taken. The parameters of anatomical landmarks were analyzed. The BioEGN mandibular kinesiography analyzer was used to record the path of incisal edge of mandibular central incisor movement during mastication. The Pearson's linear correlation analysis was performed to analyze the relationship of inclination of occlusal plane and data mentioned above with SPSS13. 0 software. Results The inclination of occlusal plane (the angle between occlusal plane and Camper's line OP-CP) was (2. 1 ± 3. 8) ° in youth with normal occlusion. Means of maximal distances of 3-dimensional masticatory mandibular movement paths were as follow; the vertical length was ( 20. 22 ± 4. 28) mm, the anterior-posterior width was ( 11.42 ± 2. 45) mm, and the lateral width was (8. 62 ± 1. 52) mm. The inclination of occlusal plane was negatively correlated to the lateral width of masticatory path in frontal plane (r = -0. 39, P <0. 05). Occlusal plane was approximately vertical to the opening and closing path in the vicinity of intercuspal position during mastication. The inclination of occlusal plane was positively related to occlusal plane-closing angles in the upper segments of closing path during mastication(P<0. 05). Masticatory axis angle was (66. 50 ±7. 98)° with no significant correlation to the inclination of occlusal plane (P >0. 05).Conclusions These results suggest that the sagittal inclination of occlusal plane can influence 3-dimensional morphology of masticatory path. The inclination of occlusal plane has a guiding effect on masticatory movement in the upper segments of closing path.
