Iijima Yosuke, Yamada Miki, Nakamura Satoshi, Hino Shunsuke, Horie Norio, Kaneko Takahiro
Saitama Medical Center, Saitama Medical University, Japan.
Gerontol Geriatr Med. 2023 Mar 22;9:23337214231162750. doi: 10.1177/23337214231162750. eCollection 2023 Jan-Dec.
Clasp-penetrating oral injury caused by removable partial dentures is basically a minor injury but can also cause complications such as continuous bleeding. No systematic investigations of clasp injury have been undertaken. The aims of this study were to reveal the characteristics of clasp injury and estimate variables associated with clasp injury of the oral mucosa. This retrospective study used clasp injury as the outcome variable, with primary predictor variables of demographic characteristics, medical history, local characteristics, and denture design, including the site of the affected clasp. Denture type was examined according to the classification of Kennedy. Collected data were statistically analyzed using the χ test or Fisher's exact test and the level of significance adopted was 5%. This report consists of 73 cases (36 men and 37 women), of which 31 cases had precise denture information. Among them, clasp injuries were more common with Class I (51.6%) and Class II (32.3%) dentures ( < .001). Premolar (64.5%) and canine clasps (32.3%) were significantly more frequently involved ( < .001). Clasp injury of the oral mucosa was significantly more common on the tongue, and mandibular free-end saddle dentures with premolar or canine clasps were the most notable risk factor for clasp-penetrating injury of the oral mucosa.
可摘局部义齿导致的卡环穿透性口腔损伤基本上是轻伤，但也可能引发持续出血等并发症。目前尚未对卡环损伤进行系统研究。本研究的目的是揭示卡环损伤的特征，并评估与口腔黏膜卡环损伤相关的变量。这项回顾性研究将卡环损伤作为结果变量，将人口统计学特征、病史、局部特征和义齿设计（包括受影响卡环的部位）作为主要预测变量。根据肯尼迪分类法对义齿类型进行检查。收集的数据采用χ检验或费舍尔精确检验进行统计学分析，采用的显著性水平为5%。本报告包含73例病例（36名男性和37名女性），其中31例有精确的义齿信息。其中，I类义齿（51.6%）和II类义齿（32.3%）的卡环损伤更为常见（P<0.001）。前磨牙卡环（64.5%）和尖牙卡环（32.3%）受累显著更频繁（P<0.001）。口腔黏膜的卡环损伤在舌部明显更为常见，带有前磨牙或尖牙卡环的下颌游离端鞍基义齿是口腔黏膜卡环穿透性损伤最显著的危险因素。
