中切牙修复体与同名牙宽度不一致的可接受度研究

发布时间：2018-12-25 12:13

【摘要】：研究背景随着口腔修复技术的发展和各种新材料的应用，缺失牙齿的修复在满足功能的同时，在美学方面有了更高的要求。国内外许多学者在美学修复（aestheticrestoration，AR）方面做了大量研究，但许多研究均是以左右对称为前提的，但临床中常见原有上颌前牙倾斜，扭转等，因外伤或牙周疾病等原因导致牙齿脱落需要进行修复治疗者。此类就诊者缺牙间隙的宽度与对侧同名牙不同，但往往更希望能拥有排列整齐的牙齿，而不愿将修复体制作成原有形态。关于如何对此类患者进行修复，相关研究尚不多见。本研究希望通过不同人群对修复体与同名牙宽度不一致的认可程度，，来评估大众对于此类修复的接受度，希望找出规律，为临床治疗提供参考。目的：评价不同人群对于上颌中切牙修复体的宽度与同名牙不一致时的可接受度。方法：拍摄个别正常牙合(individual normal occlusion,INO)者正面最大微笑照片，使用图像处理软件对所得图片进行一侧中切牙宽度拉伸，形成与对侧同名牙不对称的图片。请被调查者查看图片，分别指出发觉有中切牙差异的图片，和可以接受的最大不对称图片，其最小值即为最小察觉值（the minimum perceived value，TMPV）,其最大值即为最大可接受值（the maximum acceptable values，TMAC）。对结果进行统计，并用x2检验对结果进行分析。结果：共收到138份有效调查，其中口腔专业相关人员49人，非口腔专业相关人员89人。69.4%的口腔专业相关人员可以察觉出0.5mm的差异，而非口腔专业相关人员中只有30.3%的人可发觉此差异。44.9%的口腔专业相关人员可以最大容忍中切牙宽度相差1mm，而非口腔专业相关人员中，最大可以忍受中切牙宽度差距为1.5mm者，所占比例居多（39.3%）。结论：在中切牙修复体宽度与对侧同名牙不一致时，口腔专业相关人员比非口腔专业相关人员具有更敏锐的察觉力，年龄和性别的差异无明显差别。非口腔专业相关人员对此类不对称有着更大的容忍度。年龄大者比年轻者更能接受此类不对称性修复。
[Abstract]:Background with the development of dental prosthesis technology and the application of various new materials, the restoration of missing teeth not only meets the function, but also has higher aesthetic requirements. Many scholars at home and abroad have done a great deal of research on aesthetic restoration (aestheticrestoration,AR), but many studies are based on the premise of left and right symmetry, but it is common in clinical practice to tilt and twist the original maxillary anterior teeth. Tooth loss due to trauma or periodontal disease. The width of the missing space is different from that of the contralateral teeth, but they prefer to have the teeth arranged neatly rather than to make the restoration system the original form. There are few studies on how to repair such patients. The purpose of this study is to evaluate the acceptance of the restoration by different people and to find out the rules for clinical treatment. Objective: to evaluate the acceptability of maxillary central incisor prosthesis in different population when the width of maxillary central incisor is not the same as that of the same name. Methods: individual normal (individual normal occlusion,INO) patients were photographed with the largest positive smile. The width of the middle incisor was stretched with image processing software to form the asymmetrical image of the contralateral teeth of the same name. The respondents were asked to look at the images and point out the images that found the difference between the central incisors and the acceptable maximum asymmetry images, the minimum value of which was the minimum perceived value (the minimum perceived value,TMPV). Its maximum value is the maximum acceptable value (the maximum acceptable values,TMAC). The results were analyzed by X 2 test. Results: a total of 138 effective surveys were received, of which 49 were related to stomatology and 89 were non-oral. 69.4% of them could detect the difference of 0.5mm. Only 30.3% of the non-oral related personnel could find the difference. 44.9% of the dental professionals could tolerate a difference of 1mm between the width of the incisor and the width of the incisor. The largest difference in the width of central incisor was 1.5mm (39.3%). Conclusion: when the width of the central incisor prosthesis is not the same as that of the contralateral tooth with the same name, the dental professionals are more sensitive to detection than the non-dental professionals, and there is no significant difference in age and sex. Non-oral professionals have greater tolerance for such asymmetries. Older people are more likely to accept such asymmetrical repair than young people.
【学位授予单位】：安徽医科大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：R783.3

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