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Objective To investigate the oral health status and awareness of urban children in Lhasa,aiming to provide a data basis for the prevention and treatment of children's caries and the promotion of oral health education. Methods A total of 504 Tibetan students were selected by cluster sampling from 2 primary schools in Chengguan District of Lhasa.All the participants were required to take oral health examination and complete a questionnaire about oral health awareness and behavior. Results The caries prevalence rate and mean decayed-missing-filled tooth(DMFT)of permanent teeth were 75.00% and 2.18±1.91,respectively.The rates of pit and fissure sealant and filling of permanent teeth were 3.77% and 6.81%,respectively.The caries prevalence rate of first permanent molars was 47.62%.The mean DMFT of permanent teeth and caries prevalence rate of first permanent molar were significantly higher in female group(
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Child , Female , Humans , DMF Index , Dental Caries/epidemiology , Oral Health , Oral Hygiene , Prevalence , Schools , Students , Surveys and QuestionnairesABSTRACT
Objective To observe the Hp infection effect on blood lipid metabolism and oxidative stress through detecting acute cerebral infarction (ACI) with Helicobacter pylori (Hp) infection serum lipid and malondialdehyde (MDA) level and superoxide dismutase (SOD) activity.Methods Chose ACI 350 cases of ACI group,80 cases of control group and detected serum Hp-IgG antibody (by colloidal gold) and 14C urea breath test (by14 C-UBT).Used the American beckman coulter AU680 fullautomatic biochemical analyzer to detect the serum lipid and SOD activity (colorimetry),and used Shanghai now 752 visible spectrophotometcr (532 nm) to detect the serum MDA level (TBA).Results The Hp infection rate of ACI group (69.5 ％) was significantly higher than that in the control group (33.8％),the differences was statistically significant (x2 =18.882,P＜0.01).The differences in serum TC,TG,LDL-C and HDL-C levels were statistically significant (t=4.167 ～5.521,all P＜0.01) compared with Hp non-infection group.The serum MDA level and SOD activity of the control group and Hp infection group were statistically significant (F=34.891～46.613,all P＜0.01).Hp infection with Hp infection group to compare serum MDA level and SOD activity differences statistically significant (t=5.197,9.713,all P＜0.01),the Hp infection group and control group in comparative differences were statistically significant (t=3.173,8.228,all P＜0.01).Conclusion Acute cerebral infarction merger of HP infection,blood lipid metabolic disturbance in body increased and enhanced oxidative stress reaction,this may be intensified HP infection is one of the reasons for acute brain infarction dis ease.
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<p><b>OBJECTIVE</b>To explore the clinical effects of surgical treatment with cable dragged reduction and cantilever beam internal fixation by posterior approach for odontoid fracture associated with atlantoaxial dislocation.</p><p><b>METHODS</b>The clinical data of 12 patients with odontoid fracture associated with atlantoaxial dislocation from January 2008 to December 2013 were retrospectively analyzed. There were 8 males and 4 females, ranging in age from 21 to 53 years with an average of 37.2 years. Eleven cases were fresh fracture and 1 case was old fracture, all patients complicated with atlantoaxial anterior dislocation. According to Anderson-D' Alonzo typing method modified by Grauer, 3 cases were type IIA, 5 cases were type IIB, 3 cases were type IIC, and 1 case was type IIIA. All patients underwent surgical treatment with cable dragged reduction and cantilever beam internal fixation by posterior approach. JOA score and ADI method were respectively used to evaluate the nerve function and reductive condition of atlantoaxial dislocation.</p><p><b>RESULTS</b>All patients were followed up from 6 months to 2 years with an average of 1 year and 3 months. At 1 week, 6 months after operation, and final follow up, JOA scores were 13.2±1.3, 13.5±1.4, 14.3±1.5, respectively, and these data were obviously better than that of preoperative 8.3±1.4(<0.05). Postoperative X rays and CT showed satisfactory reduction of atlantoaxial dislocation. At 1 week, 6 months after operation, and final follow up, ADI were (2.2±0.4), (2.4±0.6), (2.3±0.5) mm, respectively, and these data were obviously better than that of preoperative.(5.8±1.2) mm(<0.05). All screws and cables had good location without looseness and breakage, and bone graft got fusion.</p><p><b>CONCLUSIONS</b>Surgical treatment with cable dragged reduction and cantilever beam internal fixation by posterior approach for odontoid fracture associated with atlantoaxial dislocation is a good method, with advantage of firm fixation and high safety. It could obtain good clinical effects.</p>
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The distinct network organization, management, service and operating characteristics of US Southwest Airlines are key elements of its success compared with other airlines. As a network organization type, the spider web airline network has received more attention. In this paper, we analyzed the relation between the spider web airline network and spider web, and the structure of spider web airline network, built the assignment model of the spider web airline network,and investigated the economics concerned.