Abstract：
UNASSIGNED: This study identifies factors for differential diagnosis among lesions by retrospectively comparing panoramic and cone-beam computed tomography images and analyzing the characteristics of lesions associated with impacted mandibular third molars (IMTs).
UNASSIGNED: A retrospective cohort study was conducted in patients who simultaneously underwent IMT extraction surgery and related benign tumor resection or cyst enucleation at our institution from 2017 to 2021. To compare the characteristics of each group, two comparative analyses were conducted. The first comparison considered the most frequently observed lesions associated with IMTs: dentigerous cysts, odontogenic keratocysts (OKCs), and ameloblastoma. The second comparison involved placing dentigerous cysts, which have a relatively low recurrence rate, into group A and placing OKC, ameloblastoma, and odontogenic myxoma, which have high recurrence rates, into group B.
UNASSIGNED: Significant differences in the size of the lesion were found in the order of ameloblastoma, OKC, and dentigerous cyst (P <0.05). The buccolingual width of ameloblastoma differed significantly from that of the other groups, with no significant difference observed between the OKCs and dentigerous cysts (P=0.083).
UNASSIGNED: Patient age and lesion size differed significantly among lesion types associated with IMTs, with younger age and larger lesions for OKCs and odontogenic tumors. OKCs are likely to have a larger mesiodistal width than dentigerous cysts. The buccolingual width of ameloblastomas was larger than those of dentigerous cysts and OKCs.
UNASSIGNED: A retrospective cohort study was conducted in patients who simultaneously underwent IMT extraction surgery and related benign tumor resection or cyst enucleation at our institution from 2017 to 2021. To compare the characteristics of each group, two comparative analyses were conducted. The first comparison considered the most frequently observed lesions associated with IMTs: dentigerous cysts, odontogenic keratocysts (OKCs), and ameloblastoma. The second comparison involved placing dentigerous cysts, which have a relatively low recurrence rate, into group A and placing OKC, ameloblastoma, and odontogenic myxoma, which have high recurrence rates, into group B.
UNASSIGNED: Significant differences in the size of the lesion were found in the order of ameloblastoma, OKC, and dentigerous cyst (P <0.05). The buccolingual width of ameloblastoma differed significantly from that of the other groups, with no significant difference observed between the OKCs and dentigerous cysts (P=0.083).
UNASSIGNED: Patient age and lesion size differed significantly among lesion types associated with IMTs, with younger age and larger lesions for OKCs and odontogenic tumors. OKCs are likely to have a larger mesiodistal width than dentigerous cysts. The buccolingual width of ameloblastomas was larger than those of dentigerous cysts and OKCs.
摘要：
■本研究通过回顾性比较全景和锥形束计算机断层扫描图像，并分析与下颌阻生第三磨牙（IMT）相关的病变特征，确定了病变之间的鉴别诊断因素。
■对2017年至2021年在我们机构同时接受IMT摘除术和相关良性肿瘤切除术或囊肿摘除术的患者进行了一项回顾性队列研究。为了比较每个组的特征，进行了两项比较分析。第一次比较考虑了与IMT相关的最常观察到的病变：牙囊囊肿，牙源性角化囊肿（OKC），和成釉细胞瘤.第二个比较涉及放置牙质囊肿，复发率相对较低，进入A组并放置OKC，成釉细胞瘤,和牙源性粘液瘤，复发率高，进入B组。
■在成釉细胞瘤的顺序中发现病变大小存在显著差异，OKC,牙质囊肿(P<0.05)。成釉细胞瘤的颊舌宽度与其他组明显不同，OKC和牙质囊肿之间没有显着差异（P=0.083）。
■患者年龄和病变大小在与IMT相关的病变类型之间存在显著差异，OKC和牙源性肿瘤的年龄较小，病变较大。OKCs的近端宽度可能大于含牙囊肿。成釉细胞瘤的颊舌宽度大于牙质囊肿和OKC。
■对2017年至2021年在我们机构同时接受IMT摘除术和相关良性肿瘤切除术或囊肿摘除术的患者进行了一项回顾性队列研究。为了比较每个组的特征，进行了两项比较分析。第一次比较考虑了与IMT相关的最常观察到的病变：牙囊囊肿，牙源性角化囊肿（OKC），和成釉细胞瘤.第二个比较涉及放置牙质囊肿，复发率相对较低，进入A组并放置OKC，成釉细胞瘤,和牙源性粘液瘤，复发率高，进入B组。
■在成釉细胞瘤的顺序中发现病变大小存在显著差异，OKC,牙质囊肿(P<0.05)。成釉细胞瘤的颊舌宽度与其他组明显不同，OKC和牙质囊肿之间没有显着差异（P=0.083）。
■患者年龄和病变大小在与IMT相关的病变类型之间存在显著差异，OKC和牙源性肿瘤的年龄较小，病变较大。OKCs的近端宽度可能大于含牙囊肿。成釉细胞瘤的颊舌宽度大于牙质囊肿和OKC。
