Jin Y, Lin W, Huang S, Zhang C, Pu T, Ma W, Lin D
The Clinical Department, College of Veterinary Medicine, China Agricultural University, Beijing 100193, People's Republic of China.
J Comp Pathol. 2012 May;146(4):357-64. doi: 10.1016/j.jcpa.2011.08.001. Epub 2011 Sep 8.
Dental data from eight adult giant pandas (Ailuropoda melanoleuca) (four females and four males) were collected at the Beijing Zoo from February 2009 to July 2010. Examination findings were recorded in dental charts. All the pandas had different degrees of tooth wear. Incisors, canines and second premolars had the most abnormalities. Five animals had caries; molars were the most affected. Chip fractures were found in seven teeth (incisor, canine and premolar) of five pandas; two had complicated fractures of their canines. Premolars and other teeth were missing in three pandas. Different degrees of dental plaque and calculus were found in all animals. Two pandas had mild gingivitis; the depth of periodontal pockets in all pandas was normal (0-2 mm). Five pandas had abnormal tooth mobility. Samples of dental plaque were collected for microbial culture. Two hundred and fifty-three bacterial strains belonging to 48 species of 23 genera were isolated. Streptococcus, Moraxella, Peptostreptococcus and Porphyromonas were the dominant genera. Further research with larger sample sizes of free-ranging and captive giant pandas will be required in order to demonstrate the absence of the premolar tooth, tooth fractures and the relatively low prevalence of periodontal disease in captive giant pandas.
2009年2月至2010年7月期间，在北京动物园收集了8只成年大熊猫（4只雌性和4只雄性）的牙齿数据。检查结果记录在牙科图表中。所有大熊猫都有不同程度的牙齿磨损。门齿、犬齿和第二前磨牙的异常情况最为明显。5只动物有龋齿，臼齿受影响最大。在5只大熊猫的7颗牙齿（门齿、犬齿和前磨牙）上发现了牙釉质骨折；2只大熊猫的犬齿有复杂骨折。3只大熊猫的前磨牙和其他牙齿缺失。在所有动物中都发现了不同程度的牙菌斑和牙结石。2只大熊猫有轻度牙龈炎；所有大熊猫的牙周袋深度正常（0 - 2毫米）。5只大熊猫有牙齿松动异常。采集牙菌斑样本进行微生物培养。分离出了属于23个属48个种的253株细菌菌株。链球菌、莫拉菌、消化链球菌和卟啉单胞菌是主要的属。为了证实圈养大熊猫中前磨牙缺失、牙齿骨折以及牙周疾病相对较低的患病率，需要对更多野生和圈养大熊猫样本进行进一步研究。
