Objective To investigate the clinical effects and characteristics of sticky bone in the repair of bone defects of jaw cysts.Methods Forty-two inpatients with jaw cysts undergoing surgical treatment at the stomatology department of the Affiliated Changsha Central Hospital of University of South China from June 2021 to June 2023 were enrolled as the study subjects and randomized into the experimental group and control group,21 cases in each group.One patient in the control group was excluded due to postoperative in-fection and osteogenesis failure,and 21 patients were finally included in the experimental group and 20 patients in the control group.The residual bone cavity after mandibular cyst scraping surgery in the experimental group was filled the with sticky bone made of autologous fibrin glue and Bio-oss bone powder,while in the bone cavity of the control group was only filled with Bio oss bone powder.The facial swelling rate and pain of study subjects after surgery in the two groups were evaluated,and oral and maxillofacial cone beam CT scans were taken within 48 h,3,6 months after surgery.The changes in CT values inside the bone cavity were meas-ured and compared.Results The facial swelling rate after operation in the experimental group was significant-ly lower than that in the control group,and the difference was statistically significant(P＜0.05).The visual analogue scale(VAS)scores of pain on postoperative 1,3 d in the experimental group were significantly lower than those in the control group,and the difference was statistically significant(P＜0.05);the difference value of intra-cavity CT value in postoperative 3 months and 48 h in the experimental group was significantly higher than that in the control group,and the difference was statistically significant(P＜0.05).The intra-cavity CT value at postoperative 48 h in the experimental group was lower than that in the control group,and the differ-ence was statistically significant(P＜0.05).The intra-cavity CT values in postoperative 3 and 6 months in the experimental group were slightly higher than those in the control group,but the differences were not statisti-cally significant(P＞0.05).Conclusion Sticky bone has good biological and physical properties,which could promote the bone tissue regeneration,early restore the patient function and aesthetics,and alleviate the ad-verse reactions such as postoperative pain and swelling.It is an ideal bone graft.

Objective To understand the schistosomiasis endemic situation at a national surveillance site in Gong an Coun-ty Hubei Province. Methods According to The Scheme of Schistosomiasis Surveillance in China the schistosome infection rates of residents and cattle and the Oncomelaniahupensissnail status were investigated yearly in Zhangjiahu Village a nation-al surveillance site in Gong an County from 2004 to 2013. Results From 2004 to 2013 the human schistosome infection rates decreased from 10.66%to 0.58% and the cattle schistosome infection rates from 12.75%to 0. Meanwhile the snail areas and densities reduced and the schistosome infected snails were eliminated. Conclusion The schistosomiasis endemic situa-tion declined dramatically at the surveillance site and schistosomiasis is well-controlled.

Objective To understand the dynamic changes of snail situation and wild faeces pollution in marshlands in the pilot areas after leveling embankment for flood running and moving people from outside embankment to town for providing the scientific basis of schistosomiasis control in the same type areas. Methods Shishou City,Jiangxia District,Tuanfeng County and Huangzhou District were selected as the pilot areas. Snails were surveyed by the systematic and environmental sampling. Wild faeces were also investigated. The data were processed by Excel. Results Snail areas in Huangzhou Yeluzhou increased by 12.71%,in the others it did not change. For the snail density,there was a decline trend in Jiangxia Sanjiaozhou from 1999 to 2001,but it increased in 2002 obviously;in Huangzhou Yeluzhou it decreased in 2000,but increased again from 2001 to 2002;in Tuanfeng Luohuozhou it was fluctuation;it did not change in Shishou Fuxingzhou. Except Shishou City,the other three sites had infected snails distribution. The densities of wild faeces in the pilot areas were 1.14～15.60/hm~2. The positive rates of wild faeces were 1.35%～37.21%. Conclusion The marshlands in pilot areas were seriously polluted by wild faeces. There seemed to be an increase trend in the snail density. Snail areas did not change significantly in the last few years. However,the high transmission areas will expand. So the snail survey and snail control should be strengthened.