Context:Maxillary sinusitis is an important issue in dentistry and maxillofacial surgery. This study aims to present a systematic review of etiologies and treatments of odontogenic maxillary sinusitis.Evidence Acquisition:An electronic database search was performed based on related MeSH keywords. Articles published between January 2001 and December 2014 was selected according to the inclusion criteria. The information extracted from various studies was categorized in various tables.Results:The study selected 19 studies. In most studies, oroantral fistula (OAF) was the most common etiology of odontogenic sinusitis. Alpha-hemolytic streptococcus was the most common flora in sinusitis with dental origin. The literature shows that the Caldwell-Luc approach may be the best method for treating sinusitis in cases of displaced teeth.Conclusions:OAF is a common cause of odontogenic maxillary sinusitis and may easily be treated by endoscopy and fistula closure. Maxillofacial surgeons and dentists should consider this problem to avoid misdiagnosis and prevent complications.
Delayed wound healing is one of the most challenging complications of diabetes mellitus (DM) in clinical medicine. This study has aimed to evaluate the effects of low-level laser therapy (LLLT) on human skin fibroblasts (HSFs) cultured in a high glucose concentration. HSFs were cultured either in a concentration of physiologic glucose (5.5 mM/l) or high glucose media (11.1 and 15 mM/l) for either 1 or 2 weeks after which they were subsequently cultured in either the physiologic glucose or high concentration glucose media during laser irradiation. LLLT was carried out with a helium-neon (He-Ne) laser unit at energy densities of 0.5, 1, and 2 J/cm(2), and power density of 0.66 mW/cm(2) on 3 consecutive days. HSFs' viability and proliferation rate were evaluated with the dimethylthiazol-diphenyltetrazolium bromide (MTT) assay. The LLLT at densities of 0.5 and 1 J/cm(2) had stimulatory effects on the viability and proliferation rate of HSFs cultured in physiologic glucose (5.5 mM/l) medium compared to their control cultures (p = 0.002 and p = 0.046, respectively). All three doses of 0.5, 1, and 2 J/cm(2) had stimulatory effects on the proliferation rate of HSFs cultured in high glucose concentrations when compared to their control cultures (p = 0.042, p = 0.000, and p = 0.000, respectively). This study showed that HSFs originally cultured for 2 weeks in high glucose concentration followed by culture in physiologic glucose during laser irradiation showed enhanced cell viability and proliferation. Thus, LLLT had a stimulatory effect on these HSFs.
is an emerging and rapidly-evolving situation. This study aimed to measure the level of knowledge and attitude of the Iranian dental students towards COVID-19 and its infection control strategies. This cross-sectional study was designed using a web-based method. The questionnaire associated with COVID-19 was sent to all Iranian students in the clinical course. The extracted data regarding the knowledge and attitude of the students were statistically analyzed. In this study, 531 dental students of the clinical course in 32 Iranian universities were included. The mean age of the participants was 23.13 ± 2.29 years. The average percentage of knowledge and attitude scores were 59.7% (moderate) and 66.0% (neutral), respectively. The association between the attitude of the students and their semesters was statistically significant (r = 0.183, p < 0.001). The age of the students was also significantly associated with their attitudes (r = 0.150, p = 0.001). The outbreak of COVID-19 might resurge due to re-opening of the dental faculties. Training courses on COVID-19 infection prevention strategies should be held for dental students, especially the junior ones, and the guidelines should be sent to all of them.
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