Babbitt Sam G, Krakowski Volker Mary, Luskin Ira R
1 Animal Dental Center, Towson, MD, USA.
J Vet Dent. 2016 Dec;33(4):226-233. doi: 10.1177/0898756416683490.
Medical records and radiographs were retrospectively reviewed over a 3-year period (2012-2015) from dogs presented to a private dental referral practice. Medical records were evaluated for the diagnosis of impacted or embedded teeth. The identified dogs' radiographs were reviewed for the presence of radiographically significant cystic lesions that were associated with the impacted or embedded teeth. Radiographic criteria were established by the authors for the purposes of identifying cystic lesions in dogs of different breeds and sizes, using established indices from human dental pathology as a basis. When histopathology results were available, they were reviewed and reported. In this study, 136 dogs ranging in age from 3 months to 17 years were diagnosed with 213 unerupted teeth during the study period. There were 62 (29.1%) of the 213 radiographically apparent cystic lesions identified based on the criteria proposed in this study. In this study, 146 (68.5%) of the 213 unerupted teeth were identified as mandibular first premolar teeth. Histopathology was obtained on 28 (45.1%) of the 62 diagnosed cystic lesions. Dentigerous cysts accounted for 20 (71.4%) of the 28 cystic lesions. Brachycephalic breeds were overrepresented in this study. Boxer, pug, Shih Tzu, and Boston terrier dogs were most likely to present with cystic lesions associated with unerupted teeth. Seventeen (85%) of the 20 cases with a histopathologic diagnosis of dentigerous cyst were found within these 4 brachycephalic breeds.
对一家私人牙科转诊诊所3年内（2012 - 2015年）收治的犬只的病历和X光片进行了回顾性研究。评估病历以诊断阻生齿或埋伏齿。对已识别犬只的X光片进行检查，以确定是否存在与阻生齿或埋伏齿相关的具有显著影像学特征的囊性病变。作者根据人类牙科病理学的既定指标，为识别不同品种和体型犬只的囊性病变制定了影像学标准。如有组织病理学结果，会进行检查并报告。在本研究中，在研究期间，136只年龄从3个月到17岁的犬被诊断出有213颗未萌出的牙齿。根据本研究提出的标准，在213个具有明显影像学特征的囊性病变中，有62个（29.1%）被识别出来。在本研究中，213颗未萌出的牙齿中有146颗（68.5%）被确定为下颌第一前磨牙。对62个诊断出的囊性病变中的28个（45.1%）进行了组织病理学检查。含牙囊肿占28个囊性病变中的20个（71.4%）。在本研究中，短头品种的犬只占比过高。拳师犬、哈巴狗、西施犬和波士顿梗犬最有可能出现与未萌出牙齿相关的囊性病变。在这4个短头品种的犬只中，发现了20例组织病理学诊断为含牙囊肿的病例中的17例（85%）。
