目的研究牙周治疗对龈下菌斑中古细菌定植的影响。
Objective To investigate the effects of periodontal therapy on Archaea colonization in subgingival plaque.
控制抗生素使用、缩短住院时间和胃肠外营养的时间，对控制早产儿细菌定植将起到重要作用。
It is most important to prevent the colonization by restricting the use of antibiotic, shortening the length of hospital stay and reducing the use of parenteral nutrition.
入院当天即有细菌定植者11例，入院后发生细菌定植者52例。定植菌以革兰阴性杆菌为主（占62.8%）。
ResultsAmong 183 strains of bacteria isolated from 11 cases at the admission, 52 cases after hospitalization, 62.8% were Gramnegative organisms.
早产儿获得细菌定植与胎龄小、出生体重低、住院时间长、应用机械通气、胃肠外营养、长时间使用抗生素等因素有关。
The risk factors for colonization were gestational age, birth weight, length of hospitalization, mechanical ventilation, parenteral nutrition and length of antibiotic therapy.
结论消化道碳水化合物酶活性、细菌的定植状态、胃排空能力、肠蠕动能力均与呼气氢浓度有关。
Conclusion Carbohydrate digestive enzyme activity, bacterial growth, gastric emptying function and vermiculation ability related to expiratory hydrogen concentration.
龋病相关细菌产生的细菌素可能与细菌的定植、黏附等致龋性有关。
The bacteriocins produced by caries-related bacteria may be related to the colonization, adhesion and other cariogenic characters of the bacteria.
目的观察婴儿口腔早期定植细菌的动态变化。
Objective To observe the dynamic changes of oral microflora early colonized in infants.
目的观察婴儿口腔早期定植细菌的动态变化。
Objective To observe the dynamic changes of oral microflora early colonized in infants.
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