Aim:The aim was to evaluate the antibacterial properties of composite resin containing nanosilver against Streptococcus mutans (SM) and Lactobacillus (L). Materials and methods:Nanosilver was added to Z250 composite at 0.5 and 1% by weight. In order to confirm the homogenous distribution of the nanoparticles in the composite resin, SEM-EDX analysis was performed on one sample in each group. Z250 composite without nanosilver was used as control. Direct contact test was used to test the antibacterial properties of nanoparticle-loaded composites: 0.001 ml of 0.5 Mc Farland suspension of MS and L was placed on composite disks, and incubated for 1 hour in 5 to 10% CO 2 incubator at 37ºC. Samples were placed in 0.5 ml of sterile BHI broth and incubated for 2 hours in CO 2 incubator. Afterwards, 0.001 ml liquid from each medium was distributed on blood agar plates and incubated for 48 hours in CO 2 incubator. The numbers of bacterial colonies were counted visually. Data were analyzed using Two-way ANOVA and Tukey HSD test. Significance level was set at 0.05. Results:Addition of nanosilver to composite resin had a significant effect on reduction of the number of SM and L colonies (p = 0.000). The antibacterial properties of composite resins are different depending on the concentration of nanosilver (p = 0.014). Tukey test indicated that increase in the concentration of nanosilver caused the increase in antibacterial properties of composite resin. Conclusion:Addition of silver nanoparticles to Z250 composite could significantly inhibit the growth of Streptococcus mutans and Lactobacillus on the surface of this composite.Clinical significance: The addition of nanosilver to Z250 composite could inhibit the growth of SM and L on the surface of the restoration and therefore prevent the occurrence of secondary caries.
Key Clinical Message Lipoma is a benign neoplasm that primarily affects the middle‐aged individuals and has a rare oral cavity occurrence. Given its noninvasive behavior and low recurrence rate, surgical conservative management should be regarded as the best therapeutic option. This paper highlights two patients along with their improved conditions following the treatment.
Pseudoaneurysm of superficial temporal artery (STA) is an uncommon complication of blunt and penetrating trauma. It accounts for only 1% of all traumatic aneurysms. Most pseudoaneurysms of STA present as a painless pulsating mass, and its diagnosis can be made with physical examination and ultrasound or computed tomography angiogram. The treatment of choice is ligation and resection. This report includes a review of the anatomy, histopathology, etiology, diagnosis, and treatment options for STA pseudoaneurysm and presents a very rare documented case of STA pseudoaneurysm following penetrating trauma that was presented to the hospital with severe hemorrhage, and surgical resection of the lesion mandated the external carotid artery to be exposed for proximal control.
Background:Early diagnosis of odontogenic cysts due to their silent progression is always a challenging problem for clinicians.Objectives:The current study aimed to evaluate the frequency of odontogenic cysts and related factors in a selected Iranian population.Patients and Methods:The current cross-sectional study was conducted on 312 patients’ recorded data in Taleghani Hospital, Tehran, Iran, from April 1993 to December 2013. All related data were extracted from the records and categorized in tables. The correlation between the variables was analyzed by either chi-square or multinominal logistic regression tests. The P values < 0.05 were considered significant.Results:Evaluation of 312 patients’ records (185 males and 127 females) with the mean age of 27.6 showed that Odontogenic Keratocyst (OKC) was the most common odontogenic cyst of all followed by the dentigerous cyst as the second most common lesion. Most of the patients were in the second or third decades of their lives, although there was no statistically significant age distribution. The finding of the current study showed that calcifying odontogenic cyst (COC) occurrence was significantly related to the history of trauma. Enucleation and curettage of the odontogenic cysts were the most common treatment plans of all.Conclusions:The current study showed that clinicians should consider the many factors associated with the occurrence of odontogenic cysts.
Introduction:Fracture of the styloid process (SP) of the temporal bone is a rare traumatic injury in normal individuals who are not suffering from Eagle’s syndrome. Diagnosis and management of this problem requires comprehensive knowledge about its signs and symptoms. This study aimed to present an isolated styloid process fracture in a nonsyndromic patient.Case Presentation:A 50-year-old male patient was referred to our department with a complaint of sore throat. However, presentation of the problem resembled the symptoms of temporomandibular joint disorder (TMD). Fracture of the SP of the temporal bone was detected on the radiographs. Conservative treatment was undertaken for the patient. The symptoms diminished after about four months.Conclusions:Physicians should be aware of the signs and symptoms of different pain sources to prevent misdiagnosis and maltreatment.
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