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INTRODUCTION: The world has faced the pandemic of COVID-19 in March 2020 and still it continues to affect in 2021. There is a great variation about the course of the disease and its features. Hence, in the present systemic review, we intend to determine the pooled estimations in the clinical features and prognosis along with the subgroups based on the severity of the disease in various regions of the world. MATERIALS AND METHODS: Online data were collected from the search engines of EBSCO, PubMed, Google Scholar, and Scopus. The searched terms were COVID 19, CORONA, SARS-CoV-2, clinical features, Wuhan, etc. The study articles were collected that from January 2020 to February 2021. Based on the PRISMA guidelines, a meta-analysis was performed. RESULTS: A total of 5067 articles were selected, of which 176 were finalized for the study. There were a total of 11 countries that were included, with a total of 2½ lakh participants. Mean age was 47.5 years. Around 22.5% had comorbidities. The mortality was 5.5%. We observed a strong association between the medical condition of the patient and the severity of the infection. In severe cases, the most common symptoms were respiratory and gastrointestinal. The mortality was registered in those with pneumonia and end-organ failure. CONCLUSION: It can be concluded from this meta-analysis that in a fourth of the positive patients, the disease was severe. In nearly 6% of the COVID-19 patients, mortality was seen. Patients with comorbidities and the severe form of the disease should be closely monitored.
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BACKGROUND: Autorotation of the mandible is a normally anticipated phenomenon following a surgical superior repositioning of the maxilla in clinical situations where patients have an excessive gummy smile. Prediction of the surgical treatment outcome following a presurgical orthodontic treatment is a critical element in the surgical treatment planning. MATERIALS AND METHODS: The relevant articles were selected by hand search and electronic media (Google Scholar, PubMed, Science Direct, Medline, Embase, and Cochrane) from 1982 to 2020. All the relevant articles were properly screened, and findings were extracted from the articles. RESULTS: It was observed that, following maxillary intrusion, mandible would eventually autorotate to take a new occlusion. Mandibular autorotation as a result of maxillary intrusion would lead to minimal shortening of the lower lip in the vertical plane. It was observed that the amount of mandibular autorotation correlates with the extent of maxillary impaction. Studies have shown that there is a passive soft-tissue response which may be attributed to the fact that no muscular detachment had been affected in the lower lip and soft-tissue chin region during the maxillary surgery. CONCLUSION: It is observed that there is a definite influence on the mandibular and chin positions as a result of maxillary intrusion and autorotation of the mandible. Every 1 mm of maxillary superior impaction, the chin moved 0.6 mm vertically and 0.2 mm horizontally. There is an appreciable shortening of the lower lip length.
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BACKGROUND: To evaluate the effect of EDTA, Maleic acid, Citric acid and MTAD Irrigating Solutions on the shear bond Strength of A-H plus sealer. MATERIALS & METHODS: Forty mandibular single rooted premolar teeth with straight roots were taken, decoronated and instrumented using Protaper rotary instruments to size #F3, 0.09 taper, at the working length, with 3 mL of 2.6% sodium hypochlorite in between irrigation. The teeth were divided into 4 groups and final irrigation was done using NaOCl/EDTA:Group 1(Positive Control group); NaOCl/Maleic acid: Group2; NaOCl/Citric acid: Group 3; NaOCl/MTAD: Group 4. Obturation was done using Obtura II thermoplasticized technique with AH Plus sealer. Each root section was then subjected to a compressive load via a universal testing machine, to measure the push out bond strength. RESULTS: The data was collected and submitted to statistical analysis by One way ANOVA test, and Group 2: NaOCl/Maleic acid showed greater bond strength (6.542+/_ 1.12 MPa) than other groups. CONCLUSION: Removal of smear layer with Maleic acid as a final rinse enhanced the adhesive ability of A-H plus sealer, followed by EDTA, Citric acid and MTAD. A final rinse with MTAD might have a negative effect on the bonding ability of resin-based A-H plus sealer. How to cite the article: Ravikumar J, Bhavana V, Thatimatla C, Gajjarapu S, Reddy SG, Reddy BR. The effect of four different irrigating solutions on the shear bond strength of endodontic sealer to dentin - An In-vitro study. J Int Oral Health 2014;6(1):85-8.
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AIM: The study was aimed at esthetic and functional results as well as patient tolerance after reconstruction with reconstruction plate. The follow-up ranged from 1 to 4 years. MATERIALS AND METHODS: A retrospective study of 36 patients who had mandibular reconstruction with AO/ASIF stainless steel reconstruction plates after oncologic resection was evaluated. The indications and postoperative outcomes were studied. RESULTS: At the end of study, 24 of 36 patients (67%) still had the plate in place. Around three (8%) plates were fractured. Nine (25%) plates got exposed leading to surgical intervention. Surgical results were satisfying, particularly when looking at delayed healing or long-term tolerance. Esthetic (79% rated results as good or acceptable) and functional results of this reconstruction were satisfying. CONCLUSION: We conclude by saying that reconstruction plate provides a solution for safe and rapid mandibular reconstruction for patients with poor prognosis or poor condition. This method also preserves the possibility of secondary reconstruction. CLINICAL SIGNIFICANCE: The reconstruction plate may be a good clinical choice for safe and rapid mandibular reconstruction.
