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目的:比较正常不同年龄、性别的咀嚼效能;正常与错不同年龄、性别咀嚼效能的差异。方法:重量法分别测算出121例11~16岁及21~25岁正常牙合与错牙合咀嚼值。121例中48例正常牙合,73例包括上颌前突、前牙反、拥挤在内的错。用SPSS10.0统计软件的独立样本t检验(2样本资料的均数比较,即成组t检验)对有关组分别进行比较。结果:21~25岁男女正常平均咀嚼值之间,男性咀嚼值远远高于女性的咀嚼值,P=0.000,有高度显著性差异;不同年龄咀嚼值的差异在男性表现明显:21~25岁男性正常的平均咀嚼值明显高于11~16岁男性正常牙合的平均咀嚼值,P<0.01,差异有高度显著性;11~16岁男性中前牙反的平均咀嚼值低于正常的平均咀嚼值,P<0.05,差异有显著性;21~25岁女性中上颌前突的平均咀嚼值比正常的平均咀嚼高,P<0.05,有显著性差异;21~25岁女性中前牙拥挤的平均咀嚼值比正常的平均咀嚼值高,P<0.05,有显著性差异。结论:青年男性咀嚼效能远远高于女性的咀嚼效能;青年男性正常咀嚼效能明显高于青少年男性正常牙合的咀嚼效能;青少年男性前牙反的咀嚼效能低于青少年男性正常的咀嚼效能;青年女性中上颌前突和拥挤的咀嚼效能高于正常的咀嚼效能。
OBJECTIVE: To compare the masticatory efficacy of normal and different age and gender, and to investigate the difference of masticatory efficiency between normal and wrong of different age and sex. Methods: Gravimetric method was used to calculate the chewing value of 121 cases of normal occlusion and malocclusion of 11 ~ 16 years old and 21 ~ 25 years old respectively. 48 cases of 121 cases of normal occlusion, 73 cases, including the maxillary protrusion, anterior crossbite, crowding, including the wrong . The SPSS10.0 statistical software independent sample t test (two sample data of the mean comparison, that is, t-test group) were compared for the respective groups. Results: The mean masticatory values of males and females aged 21-25 years were significantly higher than those of males (P = 0.000). The masticatory value of males at 21 ~ 25 years old was significantly lower than that of males The mean chew value of 25-year-old male was significantly higher than that of 11--16-year-old male, P <0.01, the difference was highly significant. The mean chew value of ankle in 11-16-year-old male was low The mean chewing value of maxillary protrusion was higher in normal women than in normal women (P <0.05), while the mean chewing value of maxillary protrusion in 21 ~ 25-year-old women was 21 ~ 25 The average chewing value of crowding of anterior teeth in old women was higher than the average chewing value of normal,, P <0.05, there was a significant difference. Conclusion: The masticatory efficacy of young males is much higher than that of females. The masticatory efficiency of normal male males is significantly higher than that of young males. The masticatory efficiency of male males is lower than that of male males Efficacy; young women in the maxillary protrusion and crowding chewing masticatory efficiency is higher than normal .