3Tanaka M,Anguri H,Nishida N,et al.Reliability of clinical parameters for predicting the outcome of oral malodor treatment.J Dent Res,2003,82:518-522.
4Nakano Y,Yoshimura M,Koga T.Correlation between oral malodor and periodontal bacteria.Microbes Infect,2002,4:679-683.
5Johnson PW,Yaegaki K,Tonzetich J.Effect of volatile thiol compounds on protein metabolism by human gingival fibroblasts.J Periodontal Res,1992,27:553-561.
6Zhou H,McCombs GB,Darby ML,et al.Sulphur by-product:the relationship between volatile sulphur compounds and dental plaqueinduced gingivitis.J Contemp Dent Pract,2004,5:27-39.
7Morita M,Wang HL Effect of initial periodontal therapy onsulcular/tongue sulfide level.A pilot study.J Clin Periodontol,2002,29:844 -847.
8Persson S,Edlund MB,Claesson R,et al.The formation of hydrogen sulfide and methyl mercaptan by oral bacteria.Oral Microbiol Immunol,1990,5:195-201.
9Torresyap G,Haffajee AD,Uzel NG,et al.Relationship between periodontal pocket sulfide levels and subgingival species.J Clin Periodontol,2003,30:1003-1010.
10Chuang S K, Ca I T, Douglass CW, et al. Frailty approach for the analysis of clustered failure time observations in dental research. J Dent Res ,2005,84( 1 ) :54-58.
