Playing Online Game Increase Aggressive Behaviour of High School Students on 4.0 Century in Papua

Introduction:Once the enormity of online games took over the attention of many teens and children so that it brought a big change.Aggressive behavior among adolescents especially high school students from year to year is increasing both in number and forms of aggressive behavior that is raised.Objectives:This study aims to determine the relationship between playing online games and aggressive behavior of high school students in Jayapura.Methods:The research method used was analytical research using cross sectional design.Study the relationship between two variables in a situation or group of objects using a simple linear regression statistical test.Result:The correlation effect of Length Playing Game Online with aggressively behavior of students in High School logistic test results obtained meaningful results where the value of p=0,00<0.05.This means that there is an influence or relationship between the lengths of playing online games with the aggressive behavior of high school students.These results indicate that there is a positive relationship between the lengths of playing online games with the aggressive behavior of adolescents.This means that the old variable playing online games can be used as a trigger to predict the emergence of aggressive teenage behavior.The higher the length of playing online games,the higher the aggressive behavior of teenagers,conversely the lower the longer playing online games,the lower the aggressive behavior of teenagers.

Role of salivary matrix metalloproteinase-8 （MMP-8） in chronic periodontitis diagnosis

Periodontitis is an inflammatory disease of the periodontium. Any imbalance between the matrix metalloproteinases （MMPs） secreted by neutrophils and tissue inhibitors initiates the destruction of collagen in gum tissue, leading to chronic periodontitis. This study aimed to correlate salivary levels of MMP-8 and periodontal parameters of chronic periodontitis to establish MMP-8 as a noninvasive marker for the early diagnosis of chronic periodontitis. The study involved 40 subjects visiting the periodontic OPD of Dr. Ziauddin Ahmad Dental College and Hospital, located in Aligarh, U.P., India, from 2011 to 2012. The subjects were divided into two groups： group I consisted of 20 periodontally healthy subjects （controls） while group II consisted of 20 patients with chronic periodontitis. Chronic periodontitis was assessed on the basis of several periodontal parameters, including pocket probing depth （PPD）, clinical attachment level （CAL）, gingival index （GI）, and plaque index （PI）. Around 3 ml of unstimulated and whole expectorated saliva was collected for MMP-8 estimation by ELISA using Quantikine human total MMP-8 immunoassay kits. Data were analyzed using STATISTICA （Windows version 6） software. Salivary MMP-8 levels of groups I and II were 190.91 ± 143.89 ng/ml and 348.26± 202.1 ng/ml, respectively. The MMP-8 levels and periodontal status （PPD, CAL, GI, and PI） of groups I and II showed positive and significant correlations （for PPD, r = 0.63, P 〈 0.001; for CAL, r = 0.54, P 〈 0.001; for GI, r = 0.49, P 〈 0.001; and for PI, r = 0.63, P 〈 0.001）. The results of this study demonstrate elevated concentrations of MMP-8 in individuals with chronic periodontitis.