摘要
目的 探讨评价咬合的 2项指标 (近远中向的安氏错分类及垂直向和唇 (颊 )舌向的覆覆盖关系 )在颞下颌关节紊乱病 (temporomandibulardisorders,TMD)组、大学生志愿者 (US)组及错患者 (MAL)组间有无明显差别。方法 10 0例TMD、10 0例MAL、2 6 8名US ,共 4 6 8人 ,取研究模观察。结果 ①MAL组安氏Ⅰ类的比例低于其他 2组 (P <0 0 5 ) ;②MAL组前牙反和深覆盖比例明显高于其他 2组 (P <0 0 5 ) ;③覆覆盖异常指数 (后牙每 1处积 5分 ,前牙每 1处积分积 3分 ) ,MAL组明显高于US组 (P <0 0 5 ) ,而TMD组与MAL组和US组差异均无显著性 (P >0 0 5 )。结论影响美观的前牙异常治疗需求高 ,而咬合异常与TMD未见显著相关关系。
Objective The relationship between occlusion and temporomandibular disorders (TMD) remains disputed. The related epidemiological studies have been carried out focused on the occlusal characteristics in motion, for example in protrusion, retrusion or laterally extension and on some of malocclusion features. Very few studies were carried out on the intercuspal occlusion which is the most important occlusal relationship.Angle′s classification of occlusion and the relationship of over jet and over bite are two prominent features now generally used in clinical practice for occlusal evaluation. In present study two kinds of features of occlusion were compared among TMD patients, malocclusion patients and university student volunteers, who of the laters represented nature population. Methods 100 continued cases visiting our TMD Clinic during the year of 2 000 with complain of TMD problem, 100 malocclusion patients in continued orthodontic department records, and 268 university student volunteers were included. All subjects were with complete dentitions, except of age related third or second molar tooth eruption difference. Study cast were obtained for all 468 subjects involved and following characters were studied. 1.Angle′s classification; 2. Over jet and over bite relationship. Anteriorly it included cross bite, cusp to cusp bite, deep over bite (without deep over jet), deep over jet (with or without deep bite), open bite, and others. Posteriorly it included cross bite, reverse cross bite and others. 3.Abnormal occlusal index: For the purpose of quantitatively comparing the abnormal occlusal relationship of over bite and over jet, the occlusal index was introduced. The anterior continued abnormal was scored as 3 while posterior continued oclcusal abnormal scored as 5. The sum of the scores in the same subject was taken as his abnormal occlusion index. Results 1.Ratio of Angle′s Ⅰ patients in malocclusion group was significantly lower than those in TMD group and US group ( P < 0.05), while the later two groups had no difference ( P > 0 05). 2.The ratios of anterior cross bite and deep over jet were higher in malocclusion group than those in other two groups. No significant difference for the other kinds of abnormal over jet and over bite relationship were found among the three groups. 3.The abnormal occlusion index of malocclusion group was higher than that of US group, but not than that of TMD group which had no difference with US group either. Conclusions 1.Aesthetic related anterior abnormal occlusion such as anterior cross bite and deep over jet attract more attention of popular. But they had no relationship with TMD. 2.TMD patients had not significant occlusal features on Angle′s classification and over jet and over bite relationship compared to malocclusion and nature population subjects.
出处
《中华口腔医学杂志》
CAS
CSCD
北大核心
2002年第4期249-252,共4页
Chinese Journal of Stomatology
基金
国家高等学校骨干教师资助计划资助项目
