ABSTRACT
Objective To make a preliminary study on self-perception of profile among orthodontic patients.Methods A total of 226 orthodontics patients (79 males and 147 females with average age of 19.3 years) were enrolled in this study.All the patients were treated in the Department of Orthodontics,Sun Yat-sen University Hospital of Stomatology during May to August 2016.Self-perception of profile was investigated in the patients.They were asked whether they had ever noticed their own profile and to choose from among various photos the one that most resembled their own profile.Then profile photos of patients were taken and measured.Differences between self-perception profile and actual profile were compared using paired t test.Results There were 147 patients (41 males and 106 females) answered that they had noticed their own profile.Difference was significant between patients' actual profile and self-perception profile (P＜0.05).Difference was significant between male patients' actual profile and self-perception profile (P ＜0.05).Difference was not significant between female patients' actual profile and self-perception profile (P ＞ 0.05).Compared with male patients,difference was smaller between female patients' actual profile and self-perception profile.Conclusions Compared with male patients,female patients put more emphasis on their own profile.Patients' self-perception of their own profile is not accurate.Female patients' self-perception of their own profile is more accurate than male patients.
ABSTRACT
BACKGROUND:Currently, there are a lot of studies addressing oral microflora variation in patients wearing fixed orthodontic appliance. OBJECTIVE:To determine the changes in Streptococcus mutans, Lactobacil us and oral health in teenagers wearing metal orthodontic appliances. METHODS:Twenty-three who were subjected to fixed metal orthodontic appliances as testing group and 18 adolescent volunteers with no oral diseases served as controls. We col ected saliva samples from al the participants immediately, 90 days and 180 days after fixed metal orthodontic treatment to detect changes in Streptococcus mutans and Lactobacil us, which can lead to dental caries, and other oral parameters, including gingival index and oral hygiene index. RESULTS AND CONCLUSION:In the control group, there were no difference in Streptococcus mutans, Lactobacil us, gingival index and oral hygiene index at three time points. In the testing group, the hazard levels of Streptococcus mutans and Lactobacil us were significantly increased at 90 and 180 days than immediately after fixed metal orthodontic treatment (P<0.05), as wel as the gingival index at 90 days and oral hygiene index at 180 days became worse (P<0.05). At 180 days after fixed metal orthodontic treatment, the hazard levels of Streptococcus mutans and Lactobacil us, gingival index and oral hygiene index were severer in the testing group than the control group (P<0.05). These findings indicate that the fixed metal orthodontic appliance could lead to increasing of Streptococcus mutans and Lactobacil us, and reduce oral health status badly.