Background Chronic sinusitis is one of the most common chronic diseases involving different age groups. Because the nature and etiology of chronic sinusitis are not completely known, there is not any standard treatment for this disease. It has been suggested that low-level laser can be used in treating chronic sinusitis but there are limited studies about its usage. In this research, intra-oral radiation of low-level laser has been described and implemented for the first time. Suggested hypotheses about the efficacy of this type of radiation (intra-oral) in treating chronic maxillary sinusitis includes this fact that the depth of maxilla’s vestibule is also the floor of maxillary sinus and sinus discharges collect in this area because of gravity effect. Therefore, with considering suitable radiation angle, this area gets the most benefits of laser’s anti-inflammatory effects. Material and Methods In this study, 20 patients with chronic maxillary sinusitis were included. They were assessed before and after treatment. Treatment plan was performed in 8 sessions every other days using low-level diode laser with 810 nm. Snot-22 questionnaire and rhinomanometry were used for evaluating patients. Changes of signs and symptoms were recorded in questionnaire every session and 6 months after treatment. Friedman and Wilcoxon tests were used for data analyses. In this study, P value < 0.05 was considered statistically significant. Results All variables and all symptoms of patients were improved using intra-oral low-level laser and this improvement was statistically significant (P value<0.05). There was also significant decrease in nasal airway resistance and significant increase in air flow (P value<0.05). Six month after treatment completion, there was no significant difference between the results of completion and the results of 8th treatment session (P value< 0.05). Conclusions Using intra-oral low-level laser is a suitable way to treat patients with chronic maxillary sinusitis. Key words:Chronic sinusitis, maxillary sinusitis, low-level laser.
Chronic sinusitis is one of the most common chronic diseases. In this research, intra-oral radiation of low-level laser has been compared with extra-oral low level laser radiation in treating maxillary chronic sinusitis for the first time. In this clinical trial, 40 patients were enrolled. Treatment plan was performed in 8 sessions, every other day, and using low-level diode laser with 810 nm. SNOT-22 questionnaire and rhinomanometry were used for evaluating patients. Mann whiteny, Fridman and wilcoxson tests were used for data analyses. P. value < 0.05 was considered statistically significant. All studied variables were improved using intra and extra oral low-level laser and this improvement was statistically significant (P. value<0.05). Comparing the two groups, Intra-oral laser therapy significantly (P. value<0.05) improved rhinomanometry variables compared to extra-oral laser therapy. The two groups showed no significant difference in improvement of clinical symptoms that contained in the SNOT-22 questionnaire except for sneeze which intra-oral laser therapy significantly decreased this variable (P. value<0.05). It should be noted that intra-oral radiation reduced all symptoms earlier than extra-oral radiation. After Sixmonths, in intra-oral group there was no significant difference between the results of completion and the results of 8th treatment session (P. value> 0.05). But in extra-oral group only post nasal discharge and thick nasal discharge were significantly increased compared with the results of the 8th session of radiation. Other symptoms showed no significant difference (P. value>0.05). Using intra and extra oral low-level laser therapy is a suitable way to treat patients with chronic maxillary sinusitis.
Background Dentistry is a fascinating occupation but entails its own set of challenges. Long-term work and job stress can negatively impact dentists' physical and mental health, as well as their quality of life. The current study aimed to examine the professional quality of life of dentists who work in public and private healthcare facilities. Methods A cross-sectional study was conducted on 68 dentists. Data was collected using standard professional quality of life questionnaires and analyzed using descriptive statistics, independent t-tests, ANOVA, and a linear regression model. Results Participants' mean total professional quality of life score was 63.53, with a standard deviation of 18.29. As indicated by their scores, 27.9% (19 people) had a low level of professional quality of life, 20.6% (14 people) had an average level, and 51.5% (35 people) had a high level of professional quality of life. There was a significant relationship between income and type of organizational activity (P >0.05). Discussion Our result showed that more than half of dentists had a high level of professional quality of life. Considering the relationship between activity and income and the quality of life of public-sector dentists, it seems necessary to develop plans to improve the quality of their lives.
Context: There is so much reliance on using statistical signifi cance testing in clinical trials that sometimes leads to ignore clinical importance and statistical signifi cance may be assumed as substantively important. Aims: According to different concepts and lack of specifi c clinical criteria in this fi eld, the purpose of this study was to evaluate clinical versus statistical signifi cance in the postgraduate periodontal theses from the fi rst number until January of 2011 in Iran. Materials and Methods: All of the experimental periodontal theses in all six postgraduate dental faculties in Iran were evaluated and every direct and indirect evidences of clinical signifi cance were double checked in titles, methods and materials, results, conclusions and suggestions by two trained dental interns. About one-third of the theses were triple checked by the trained director at the end of the study. Results: About 66.66 percent of accessible experimental theses had statistically signifi cant results and 24 percent had some evidence of clinical signifi cance. Conclusions:The results of this study suggest that clinically signifi cant changes related to periodontal therapy should be established and threshold values of each clinical parameters should be defi ned at the beginning of the study and then statistical testing can be used to validate that fi ndings did not occur by chance.
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