Nasal width as a guide for the selection of maxillary complete denture anterior teeth in four racial groups.
Nasal width as a guide for the selection of maxillary complete denture anterior teeth in four racial groups.
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DOI：
10.1111/j.1532-849x.2006.00134.x
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发表时间：
2006-11-01
期刊：
影响因子：
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通讯作者：
Nogueira, Sergio Sualdini
中科院分区：
文献类型：
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作者：
Varjao, Fabiana Mansur;Nogueira, Sergio Sualdini
目的：无牙患者在无预拔记录的情况下选择义齿是困难的。对于确定上颌前义齿的宽度，已经提出了各种不同的指导方针。本研究是为了评估使用鼻宽度作为指导选择适当宽度上颌前义齿在巴西人口的四个种族群体。材料与方法：选取160名受试者（白人40名，黑白混血儿40名，黑人40名，亚洲人40名）。用滑动卡尺测量鼻宽和犬齿间距离。Pearson积矩相关系数用于确定上述测量之间的关系。预测了白人、黑白混血儿、黑人和亚洲人群中因鼻宽方法的临床应用而导致的选择误差在0 ~ 2mm、2 ~ 4mm和大于4mm之间的百分比。结果：四种种族的犬间距离与鼻宽之间存在弱相关性。在39.7%的白人、55.7%的黑白混血儿、81.9%的黑人和48.2%的亚洲人群中，使用鼻宽的误差大于4毫米。结论：犬间距离与鼻宽的相关性不够高，不足以作为预测因素。鼻宽预测的自然牙宽与人工牙宽之间的关系表明，鼻宽法并不是对所有研究对象都准确。
PURPOSE: Selecting artificial teeth for edentulous patients is difficult when pre-extraction records are not available. Various guidelines have been suggested for determining the width of the maxillary anterior denture teeth. This study was undertaken to evaluate the use of the nasal width as a guide for the selection of proper width maxillary anterior denture teeth in four racial groups of the Brazilian population.MATERIALS AND METHODS: One hundred and sixty subjects (40 Whites, 40 Mulattos, 40 Blacks, and 40 Asians) were selected. Using a sliding caliper, the nasal width and the intercanine distance were measured. The Pearson product-moment correlation coefficient was used to determine the relationship between the above measurements. A prediction was made of the percentage of subjects of the White, Mulatto, Black, and Asian populations in which the selection error due to the clinical application of the method of the nasal width would be within 0 to 2 mm, within 2 to 4 mm, and greater than 4 mm.RESULTS: The four racial groups showed a weak correlation between the intercanine distance and the nasal width. In 39.7% of the White, 55.7% of the Mulatto, 81.9% of the Black, and 48.2% of the Asian populations, errors greater than 4 mm would be present with the use of the nasal width.CONCLUSIONS: The correlation found between the intercanine distance and the nasal width was not high enough to be used as a predictive factor. The relationship between natural tooth width and artificial tooth width as predicted by the nasal width showed that the nasal width method is not accurate for all the studied groups.