Giant Osteoma of Mandible Causing Dyspnea: A Rare Case Presentation and Review of the Literature

Osteomas are benign slow growing tumors of bone. Tumors are usually asymptomatic until they attain remarkable size and cause asymmetry or dysfunction. In view of few reported cases of giant osteoma of mandible, this article presents a case of giant osteoma of left mandible in a 53-year old male causing dyspnea due to compression of air way space.     

Hereditary neuropathy with liability to pressure palsies

Journal of Neurology - Hereditary neuropathy with liability to pressure palsies (HNPP) is characterized by recurrent sensory and motor neuropathy in individual nerves starting in adolescence or...     

The role of peer support education model on the quality of life and self-care behaviors of patients with myocardial infarction

ObjectiveThis study aimed to assess the effect of peer education on the quality of life and self-care behaviors of patients with myocardial infarction.MethodsIn this clinical trial, 70 patients with myocardial infarction meeting the inclusion criteria were assigned to experimental (n = 35) or control (n = 35) groups using block randomization. Patients in the intervention group received two one-hour training sessions on the third day after myocardial infarction during the CCU stay along with routine care. Education intervention was performed by peers. The control group will follow routine care. All patients selected were assessed using McNews' quality of life questionnaire and Miller self-care questionnaire, respectively before the intervention and also one month after discharge. Chi-square and t-test were used to analyze the data.ResultsAfter the intervention, the mean of quality of life and the mean score of self-care behaviors in the experimental group were significantly higher compared to the control group.ConclusionsAccording to the results, to improve the quality of life and promote the self-care behaviors in such patients, using peer education along with healthcare professionals is recommended.Practice ImplicationThis patient education approach had a significant impact on quality of life and self-care behavior.     

Apically-extruded debris using the ProTaper system

The purpose of this in vitro study was to determine the quantity of debris and irrigant extruded apically using the ProTaper system compared to ProFiles and K-Flexofiles. Thirty-six mesio-buccal root canals of human mandibular molars were selected and divided into three groups of twelve canals. Two groups were instrumented with ProFiles and ProTapers according to the manufacturer's instructions. The other group was instrumented with K-Flexofiles using the step-back technique. A standard amount of irrigant was used for each canal. Apically-extruded debris and irrigant was collected in pre-weighed vials. The mean weight of extruded debris and irrigant for each group was statistically analysed using Student's t-test and one-way ANOVA. All instrumentation techniques produced extruded debris and irrigant. Although the mean amount of extrusion with the step-back technique was higher than the two rotary systems, there was no significant difference between the three groups (p > 0.05). NiTi rotary systems were associated with less apical extrusion, but were not significantly better than hand file instrumentation. All techniques extruded debris.     

Effect of chlorhexidine pretreatment on the stability of salivary lactobacilli probiotic in six- to twelve-year-old children: a randomized controlled trial

This study aimed to investigate the efficacy of chlorhexidine mouthwash disinfection on the stability of lactobacilli probiotic. This study involved 105 children in 3 groups. Subjects in group A received chlorhexidine for 2 weeks, subjects of group B received probiotic yogurt containing Lactobacillus rhamnosus GG (LGG) at a concentration of 2 × 10(8) colony-forming units per gram for 3 weeks, and subjects in group C received chlorhexidine in the same manner as group A and 24 h after cessation, they received probiotic yogurt in the same manner as group B. Salivary Streptococcus mutans (SM) and LGG were counted at baseline, 24 h, 1 week and 5 weeks after each intervention in all groups. The SM count was reduced 24 h after cessation of chlorhexidine in group A (p < 0.001), and was steady for 5 weeks (p < 0.05). In group B, SM counts did not show significant differences 5 weeks after ending the intake of the probiotic (p > 0.05); LGG counts increased (p < 0.001), but were not steady over 5 weeks. In group C, a significant reduction in SM count was recorded, and the reduced count was steady for 5 weeks; a significant increase in LGG counts was registered (p < 0.001), which was steady for 5 weeks. Intergroup comparison showed a significant increase in LGG counts in groups B and C; however, this increase was not steady in group B. Chlorhexidine treatment before probiotic intake induced more stable colonization with LGG strains than probiotic alone.     

Antioxidant effect of manganese on the testis structure and sperm parameters of formalin‐treated mice

Manganese inhibits oxidative stress damage. The aim of this study was to investigate the protective role of manganese on testis structure and sperm parameters in adult mice exposed to formaldehyde (FA). Twenty adult male NMRI mice were selected and randomly divided into four groups: (i) control; (ii) sham; (iii) ‘FA’‐exposed group; and (iv) ‘FA and manganese chloride’‐exposed group. The FA‐exposed groups received 10 mg kg^?1 FA daily for 14 days, and manganese chloride was just injected intraperitoneally 5 mg kg^?1 on 2nd weeks. Mice were sacrificed, and spermatozoa were collected from the cauda of the right epididymis and analysed for count, motility, morphology and viability. The other testicular tissues were weighed and prepared for histological examination upon removal. Seminiferous tubules, lumen diameters and epithelium thickness were also measured. The findings revealed that FA significantly reduced the testicular weight, sperm count, motility, viability and normal morphology compared with control group (P ≤ 0.05). In addition, seminiferous tubules atrophied and seminiferous epithelial cells disintegrated in the FA group in comparison with the control group (P ≤ 0.05). However, manganese improved the testicular structure and sperm parameters in FA‐treated mice testes (P ≤ 0.05). According to the results, manganese may improve and protect mice epididymal sperm parameters and testis structure treated with FA respectively.