Hunt R J, Drake C W, Beck J D
School of Dentistry, University of North Carolina, Chapel Hill.
Spec Care Dentist. 1992 Jul-Aug;12(4):149-52. doi: 10.1111/j.1754-4505.1992.tb00435.x.
This study investigated salivary levels of Streptococcus mutans, lactobacilli, and caries experience in a random sample of 448 black and 362 white older dentate adults living in North Carolina. Significant proportions of the participants had stimulated salivary flow rates less than 1.0 mL/min, salivary buffering capacity less than 4.0, S. mutans levels of 10(5) cfu/mL or more in stimulated whole saliva, or lactobacilli levels of 10(5) cfu/mL or more. Each of these factor levels could be considered, on a clinical basis, to increase caries risk. In general, people with higher levels of S. mutans or lactobacilli had more untreated coronal and root caries, but not greater total caries experience.
本研究调查了北卡罗来纳州448名黑人和362名白人有牙成年人随机样本中的变形链球菌、乳酸菌唾液水平及龋齿患病情况。很大比例的参与者刺激唾液流速低于1.0毫升/分钟，唾液缓冲能力低于4.0，刺激全唾液中变形链球菌水平达到或超过10⁵cfu/mL，或乳酸菌水平达到或超过10⁵cfu/mL。从临床角度来看，这些因素水平中的每一项都可被视为增加龋齿风险。总体而言，变形链球菌或乳酸菌水平较高的人有更多未治疗的冠龋和根龋，但总的龋齿患病情况并非更严重。
