1Pindborg JJ.Tobacco and gingivitis.Dezat Res 1947, 26:261 - 264.
2Solomon HA, Priore RL, Bross LDJ. Cigarette Smoking and periodontal disease.JADA, 1968, 77: 1081-1084.
3Kenney EB, Saxe SR, Bowles RD.The Effect of cigarette smoking on anaerobiosis in the oral cavity.J Periodontal, 1975, 46: 82-85.
4Zambon JJ, Grossi SG, Maehtei EE, et al. Alterations in sub gingival plaque associated with smoking J.Dent Res, 1994, 73: 187-686.
5Van Der Velden U, Van Winkel hoff AJ. Van Steenbergen, et al. Smoking and periodontal bacteria in severe periodontitis patients. J. Dent Res, 1997, 76: 2043.
6Takashi Hanioka, Muneo Tanaka, Keiko Takaya, et al,Pocket Oxygen Tension in Smokers and Non - smokers With Periodontal Disease. Journal of Period ontology, 2000, 71: 550- 554.
