3McDonald RE, Avery DR. Dentistry for the child and adolescent[M]. 7th ed. St. Louis: The C. V. Mosby Company, 2000: 215.
4Mattos-Graner RO, Li Y, Caufield PW, et al. Genotypic diversity of mutans Streptococci in Brazilian nursery children suggests horizontal transmission[J]. J Clin Microbiol, 2001, 39(6): 2313-2316.
5Li Y, Caufield PW. The fidelity of initial acquisition of mutans Streptococci by infants from their mothers[J]. J Dent Res, 1995, 74(2): 681-685.
6Caufield PW. Dental caries--a transmissible and infectious disease revisited: A position paper[J]. Pediatr Dent, 1997, 19(8): 491-498.
7Kozai K, Nakayama R, Tedjosasongko U, et al. Intrafamilial distribution of mutans Streptococci in Japanese families and possibility of father-to-child transmission[J]. Microbiol Immunol, 1999, 43(2): 99-106.
8Caufield PW, Cutter GR, Dasanayake AP. Initial acquisition of mutans Streptococci by infants: Evidence for a discrete window of infectivity[J]. J Dent Res, 1993, 72(1): 37-45.
9Alaluusua S, Alaluusua SJ, Karjalainen J, et al. The demonstration by ribotyping of the stability of oral Streptococcus mutans infection over 5 to 7 years in children[J]. Arch Oral Biol, 1994, 39(6): 467-471.
10Emanuelsson IR, Thornqvist E. Genotypes of mutans Streptococci tend to persist in their host for several years[J]. Caries Res, 2000, 34(2): 133-139.
