1Detection of putative periodontopathic bacteria in saliva of childrenHou Ben-xiang, OOSHIMA Ryu, SOBUE shizuo361-3642Immunohistochemical study of matrix metalloproteinase- 1 in gingiva of chronic periodontitis and healthy365-3683Comparison of the ability of forming osteoclasts of monocytes in bone marrow and spleenLIU Jia-qiang, YANG Fu-sheng, LU Kai-ke369-3724Effects of periodontal treatment on expression of IL - 1β、 IL -6 and TNF-α in peri -implantes crevicular fluid373-3755Effects of chitooligosaccharide on adherence of Streptococcus mutans376-3786Evaluation on reliability of the Chinese version of Geriatric Oral Health Assessment Index(GOHAI) for elderly379-3817The comparative study of sonic instrumentation capability on smear layer elimination in root canal preparationSUN Zhe, LIANG Jing-ping, ZHANG Lan382-3868Reseach about the causes of orthodontic brackets loss in fixed appliancesLIU Chuan-hong387-3899Clinical investigation of the fiber- reinforced composite periodontal splint(FRC) on fixing the aged loosen teethZHANG Yi, FU Zhi-ying390-39210Clinical evaluation of comprehensive therapy on cracked- teethYU Hong-mei, Lin Chao-sheng, ZHANG Hui-ling393-39411Clinical study of iodoform- calcium hydroxide as an intracanal medication of deciduous teethZHANG Qi-Ying, HAN Xiang395-39712Clinical investigation on conservative treatment of vertical fracture of posterior teethYANG Wei-hong398-39913The initial study on the relationship between inter- appointment pain during root canal therapy and diagnosis and tooth site400-40114Research advance of Toll like receptors and their roles in periodontal disease405-40815Development of combined applications of gene and tissue engineering on periodontal therapy409-413 