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Evaluation of the Golden Proportion in Patients Visiting the Oral Health Directorate of the Komfo Anokye Teaching Hospital, Kumasi
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作者 Ama Agyeibea Amuasi Alexander Oti Acheampong +4 位作者 Shadrack Owusu Robert Larmie Daniel K. Sabbah Angela-Ruth Buabeng David Edem Dompey 《Journal of Biosciences and Medicines》 2020年第8期116-126,共11页
<strong>Background: </strong>Aesthetics is a primary consideration for patients seeking dental treatment. The size and shape of the maxillary anterior teeth have significant effects not only on the dental ... <strong>Background: </strong>Aesthetics is a primary consideration for patients seeking dental treatment. The size and shape of the maxillary anterior teeth have significant effects not only on the dental aesthetics, but also on the complete facial aesthetics of a person. To satisfy this expressed need, the “Golden Proportion” is a numerical value that is used as a rule in achieving dental aesthetics. In the last two decades, several studies have questioned the application of this rule in dentistry. <strong>Aim:</strong> The aim of this study is to evaluate the presence of “The Golden Proportion in the maxillary anterior teeth widths of clients visiting the Komfo Anokye Teaching Hospital’s (KATH) Oral Health Directorate, Kumasi”. <strong>Materials and methods: </strong>A total of 100 dentulous subjects comprised of 50 males and 50 females, with ages ranging between 18 and 37 years were chosen using convenience sampling. Their dental casts were evaluated for apparent width by digital calliper. <strong>Results:</strong> The results of the study were expressed in relation to gender and tooth laterality. The results revealed that the golden proportion existed in 14% and 20% for the left and right respectively between the central incisor and the lateral incisor for males, 12% and 16% respectively for the left and right sides of females, 8% and 20% for the left and right sides respectively for males between the lateral incisor and canine and 16% and 20% for the left and right respectively for females. Conclusion: Comparison of our results with the established golden value shows differences between 1.618 and from the range that was acquired from this study. The results suggest that the rule of the golden proportion should not be strictly applied when restoring anterior teeth of patients in the dental clinic. 展开更多
关键词 golden proportion Dental Cast Analysis Smile Aesthetics
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Biometric Assessment of Maxillary Anterior Tooth Dimensions in a Hong Kong SAR Population
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作者 Ho Yin Chan Brian J. Millar 《Open Journal of Stomatology》 CAS 2022年第10期267-280,共14页
Objectives: To study the biometric dimensions of upper front teeth in a Hong Kong SAR population including gender differences and compare this with the often recommended use of the Golden Proportion when selecting too... Objectives: To study the biometric dimensions of upper front teeth in a Hong Kong SAR population including gender differences and compare this with the often recommended use of the Golden Proportion when selecting tooth proportions. Methods: A sample of dental casts was obtained from 100 patients: 50 females and 50 males with an age range from 18 to 35 years. The sample was selected based on the criteria of intact maxillary anterior dental arches, free from imbrications and crowding, no restorations or replaced teeth in the upper front teeth. The width and length of the 600 upper anterior teeth included in the casts were measured, together with the combined upper anterior tooth width for each cast. Analysis of width/height ratio, sexual dimorphism, and golden proportions was statistically analyzed. The data was analysed by SPSS using one-sample t-test, two-sample t-test, and paired t-test. Results: Most measurements had a normal distribution. Paired sample t-test revealed that the average length of male maxillary incisors is significantly higher than female maxillary incisors, while there is no obvious difference in maxillary incisor width. The mean width/length ratio of maxillary incisors ranges from 0.78 to 0.87. The mean values of maxillary apparent tooth width prove that the golden proportion (GP) ratio 1.618 was absent in the current sample. The current study data shows that the mean values of tooth width and length differed from some other populations. Conclusions: Based on the findings of this research, there is no statistically significant difference in the maxillary anterior tooth dimensions for the right and left sides of the arch. Length and width dimensions of the central incisor (CI) were greater than those of lateral incisor (LI) and Canine (C) for both genders, suggesting CI to be the dominant anterior tooth. Some gender differences in tooth dimensions, with males tend to have longer tooth dimensions than females, the average width/length ratio of the female is higher than male, which confirms that the male tends to have longer teeth. The result shows the absence of golden proportion (GP) ratios suggesting that the Golden Proportion guideline was not applicable for the Hong Kong SAR population for either gender. 展开更多
关键词 Tooth Dimensions golden proportion ANTERIOR Ratio Hong Kong
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欧洲资本自由流动的黄金时代之开端——评欧洲法院有关黄金股机制案例法对资本市场的影响 被引量:6
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作者 杨永红 《特区经济》 北大核心 2007年第5期80-82,共3页
黄金股制度系进行国有企业私有化改革之产物,目前在欧洲正面临着来自欧盟的干预。欧洲法院在审理英国、葡萄牙、西班牙、法国和比利时有关黄金股制度的案件中,宣布黄金股机制对欧洲共同市场中资本自由流动构成障碍,必须严格控制其例外... 黄金股制度系进行国有企业私有化改革之产物,目前在欧洲正面临着来自欧盟的干预。欧洲法院在审理英国、葡萄牙、西班牙、法国和比利时有关黄金股制度的案件中,宣布黄金股机制对欧洲共同市场中资本自由流动构成障碍,必须严格控制其例外之适用。它预示着资本自由化的黄金时代正在欧盟内开始。 展开更多
关键词 黄金股机制 一般利益 法律的确定性 相称性原则 中立原则
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