Yamaoka Minoru, Ono Yusuke, Ishizuka Masahide, Yasuda Kouichi, Uematsu Takashi, Furusawa Kiyofumi
Oral and Maxillofacial Surgery, Matsumoto Dental University, Shiojiri, Nagano 399-0781, Japan.
Clin Cosmet Investig Dent. 2009 May 11;1:27-34. doi: 10.2147/ccide.s4632. Print 2009.
Although mandibular third molar has a high risk of infection extending any complications, the influence of diabetes on radiolucency and acute inflammation in pericoronitis remains unclear. The present study was to evaluate whether radiolucency below the crown is related to acute inflammation in mandibular horizontal incompletely impacted third molars and to review the records of 140 men more than 45 years with and without diabetes. The odds ratio of exhibiting acute inflammation was 3.38 (95% CI: 1.13-10.16, p < 0.05) and that of exhibiting severe acute inflammation was 15.38 (95% CI: 3.56-66.49, p < 0.0001), indicating an association of acute pericoronitis in diabetes. The frequency of radiolucency below the crown and below the root in diabetics was similar to that in nondiabetics. However, the odds ratio of exhibiting both radiolucency below the crown and acute inflammation under the diabetic condition was 4.85 (95% CI: 1.60-14.73, p < 0.01), whereas that of diabetics showing both radiolucency below the root and acute inflammation was 0.46 (95% CI: 0.06-3.74, p = 0.74). Radiolucency below the crown and acute inflammation were associated with diabetes, but that below root and acute inflammation were not associated with diabetes, indicating that the region below the crown carries susceptibility to acute pericoronitis, whereas the periodontium shows a protective effect against acute pericoronitis.
尽管下颌第三磨牙发生感染并引发任何并发症的风险很高，但糖尿病对冠周炎中透射区和急性炎症的影响仍不明确。本研究旨在评估下颌水平阻生第三磨牙冠下方的透射区是否与急性炎症相关，并回顾140名45岁以上患有和未患有糖尿病男性的记录。出现急性炎症的优势比为3.38（95%置信区间：1.13 - 10.16，p < 0.05），出现严重急性炎症的优势比为15.38（95%置信区间：3.56 - 66.49，p < 0.0001），表明糖尿病与急性冠周炎有关。糖尿病患者冠下方和牙根下方透射区的发生率与非糖尿病患者相似。然而，在糖尿病情况下，出现冠下方透射区和急性炎症的优势比为4.85（95%置信区间：1.60 - 14.73，p < 0.01），而糖尿病患者出现牙根下方透射区和急性炎症的优势比为0.46（95%置信区间：0.06 - 3.74，p = 0.74）。冠下方的透射区与急性炎症与糖尿病有关，但牙根下方的透射区与急性炎症与糖尿病无关，这表明冠下方区域对急性冠周炎易感，而牙周组织对急性冠周炎有保护作用。
