Department of Oral and Maxillofacial Diseases, University of Helsinki, Helsinki, Finland.
Department of Oral and Maxillofacial Diseases, Helsinki University Hospital, Helsinki, Finland.
Eur J Oral Sci. 2022 Jun;130(3):e12862. doi: 10.1111/eos.12862. Epub 2022 Apr 1.
The aim of this study was to assess the occurrence and nature of retained dental roots and their associations with demographics in the Finnish adult population. From the cross-sectional nationwide Health 2000 Survey of the Finnish population aged 30 years and older, 6005 participants with clinical oral examination and panoramic radiographs were included. Occurrence and characteristics of all retained dental roots were examined. Statistical analyses included χ , Kruskal-Wallis and Mann-Whitney U tests, and SAS-SUDAAN calculations. The mean age of the 6005 participants (46% men and 54% women) was 53 (SD 14.6) years. At least one retained dental root was observed in 13% (n = 754) of the participants. The 1350 retained roots included 461 (34%) roots retained entirely in bone and 889 (66%) partly in bone. The most common location of a retained dental root was the third molar region. Occurrence of retained roots partly in bone was associated with male sex and lower education. Occurrence of retained third molar roots entirely in bone was associated with female sex, younger age, higher education, and living in a city. Among all retained dental roots, the preponderance of third molars emphasized the demanding nature of extracting the third molar in women.
本研究旨在评估芬兰成年人人群中残留牙根的发生情况及其特征，并探讨其与人口统计学因素的相关性。该研究基于芬兰全国性的横断面健康 2000 调查，纳入了年龄在 30 岁及以上的 6005 名参与者，他们均接受了临床口腔检查和全景 X 光检查。研究人员检查了所有残留牙根的发生情况和特征。统计分析包括 χ 2 检验、Kruskal-Wallis 检验和 Mann-Whitney U 检验，以及 SAS-SUDAAN 计算。6005 名参与者的平均年龄为 53（SD 14.6）岁，其中 46%为男性，54%为女性。13%（n=754）的参与者至少有一颗残留牙根。1350 颗残留牙根中，461 颗（34%）完全保留在骨内，889 颗（66%）部分保留在骨内。残留牙根最常见的部位是第三磨牙区。部分保留在骨内的牙根发生率与男性性别和较低的教育程度有关。完全保留在骨内的第三磨牙牙根的发生率与女性性别、较年轻的年龄、较高的教育程度和居住在城市有关。在所有残留的牙根中，第三磨牙占多数，这强调了女性拔除第三磨牙的难度较大。
