Närhi T O, Ainamo A, Meurman J H
Department of Prosthetic Dentistry and Cariology, Institute of Dentistry, University of Helsinki, Finland.
J Dent Res. 1993 Jun;72(6):1009-14. doi: 10.1177/00220345930720060301.
Yeasts are commensals in the oral cavity and may not cause disease unless there are predisposing host factors, such as other disease, or when medication is being taken. The elderly are at increased risk of yeast infection. In this paper, prevalence of salivary yeasts in a group of 368 inhabitants of Helsinki aged 76, 81, and 86 years is reported. Salivary yeasts were counted by the Oricult-N dip-slide method, salivary secretion rate and buffering capacity were measured, type of dentition was noted, and signs of yeast infection and the occurrence of subjective symptoms were determined. There was no growth of yeasts in 25% of the subjects. From one to 20 colonies/slide were observed in 21%, 21-50 colonies in 21%, and over 50 colonies (a high count) in 33%. Subjects with low salivary flow rates and low buffering capacities had significantly higher yeast counts than did subjects with normal salivary flow rates and buffering capacities. High yeast counts were found in 19% of subjects with natural teeth. The corresponding percentages in those wearing partial or complete dentures were 32 and 41, respectively. High salivary yeast counts were associated with oral mucosal lesions but not with subjective complaints of oral symptoms.
酵母是口腔中的共生菌，除非存在易感宿主因素，如其他疾病，或正在服用药物，否则通常不会引发疾病。老年人感染酵母的风险更高。本文报告了一组368名年龄在76岁、81岁和86岁的赫尔辛基居民唾液中酵母的流行情况。采用Oricult-N浸片法对唾液中的酵母进行计数，测量唾液分泌率和缓冲能力，记录牙列类型，并确定酵母感染的体征和主观症状的发生情况。25%的受试者唾液中未检测到酵母生长。21%的受试者每片观察到1至20个菌落，21%的受试者观察到21至50个菌落，33%的受试者观察到超过50个菌落（高计数）。唾液流速低和缓冲能力低的受试者酵母计数显著高于唾液流速和缓冲能力正常的受试者。19%的天然牙受试者酵母计数较高。佩戴局部或全口假牙的受试者中，相应比例分别为32%和41%。唾液酵母高计数与口腔黏膜病变有关，但与口腔症状的主观主诉无关。
