Forces applied by dental occlusion generate stresses which are transmitted to the surrounding bone via the periodontal ligament causing a tissue response. The purpose of this study was to evaluate the response of a maxillary molar under secondary trauma from occlusion by observing the changes in its stress patterns. In order to visualize the exact pattern of stress distribution, three dimensional finite element analysis models were developed. A force of 3 N, moment of 27 Nmm and a counter rotation moment of 15 Nmm were applied to simulate orthodontic forces. Stresses produced at the periodontal ligament-tooth interface on a maxillary molar model with normal bone height subjected to an orthodontic force were compared with molar models showing bone loss and analyzed using finite element analysis technique. As the bone loss increased, it was observed that, the concentration of stresses at the apical one-third of the tooth also increased and there was high tendency for tooth displacement. The results suggest that an alteration in the magnitude of forces applied may be necessary in teeth with an increased crown to root ratio to maintain a healthy periodontium.

Research into regenerative dentistry has added impetus onto the field of molecular biology. It can be documented as a prototype shift in the therapeutic armamentarium for dental disease. Regenerative endodontic procedures are widely being added to the current armamentarium of pulp therapy procedures. The regenerative potential of platelets has been deliberated. A new family of platelet concentrates called the platelet rich fibrin (PRF) has been recently used by several investigators and has shown application in diverse disciplines of dentistry. This paper is intended to add light on the various prospects of PRF and clinical insights to regenerative endodontic therapy.
Blood Platelets* ; Dentistry ; Fibrin* ; Humans ; Molecular Biology ; Research Personnel ; Stomatognathic Diseases

OBJECTIVESupracondylar fractures of the humerus account for 60% of all the fractures around the pediatric elbow and even in developed countries 18% of patients undergo surgery 48 hours or longer following presentation in the hospital. Management guidelines are not clear yet for these patients who present late. The aim of this prospective study was to evaluate the clinical, radiological and functional outcome following closed reduction and percutaneous pinning of widely displaced supracondylar fractures of the humerus presenting 12 hours or more after injury.

METHODSWe reviewed the functional and radiological results of closed reduction and percutaneous pinning using crossed K-wires in 40 patients with displaced extension type supracondylar fracture of the humerus (Gartland type III) with a delay of more than 12 hours in presentation. The average age of patients was 4.5 years and the mean delay in presentation was 17.55 hours.

RESULTSClosed reduction and percutaneous pinning was successful in 90% of patients. The mean follow up period was 15 months. The Baumann's angle was restored within 4 degrees of the unaffected side in all patients. Use of a small medial incision in patients with severe swelling helped us avoid ulnar nerve injury. Using Flynn's criteria, 38 patients (95%) had an excellent result. Two patients had mild myositis and both had a poor result. None of the patients developed cubitus varus.

CONCLUSIONClosed reduction and crossed pinning of displaced supracondylar fractures of humerus in children is a safe and effective method even with delayed presentation.

Bone Wires ; Child ; Child, Preschool ; Female ; Fracture Fixation, Internal ; methods ; Humans ; Humeral Fractures ; surgery ; Male ; Prospective Studies

Background/Aims: Coronavirus disease 2019 (COVID-19) is recognized to have variable clinical manifestations. The clinical presentation of patients with inflammatory bowel disease (IBD) having COVID-19 is unclear. Methods: We identified articles reporting about the clinical presentation of COVID-19 in those with underlying IBD from PubMed and Embase. The studies, irrespective of design or language, were included. The overall pooled frequency of various symptoms was estimated. Joanna Briggs Institute Critical appraisal checklist was used to assess the quality of studies. Results: Eleven studies, including 1,325 patients, were included in the pooled analysis. The pooled estimates for clinical presentation were; fever: 67.53% (95% confidence interval [CI], 45.38–83.88), cough: 59.58% (95% CI, 45.01–72.63), diarrhea: 27.26% (95% CI, 19.51–36.69), running nose: 27% (95% CI, 15.26–43.19) and dyspnea: 25.29% (95% CI, 18.52–33.52). The pooled prevalence rates for abdominal pain, nausea and vomiting were 13.08% (95% CI, 9.24–18.19), 10.08% (95% CI, 5.84–16.85) and 8.80% (95% CI, 4.43–16.70) per 100 population, respectively. Conclusions The clinical presentation of COVID-19 in IBD patients is similar to the general population.

Fine needle aspiration (FNA) of the thyroid is a well-tolerated minimally invasive procedure. Thyroid abscess, as a complication of FNA in an immune-competent adult, is extremely rare. Diagnosis requires a high index of suspicion, for which treatment is intravenous antibiotics, drainage, and sometimes surgery. Here we present a case of thyroid abscess in an otherwise healthy man who presented with neck pain, rapidly increasing neck swelling, difficulty in swallowing, and hoarseness of the voice that developed two weeks after diagnostic FNA of a thyroid nodule which had been present for ten months. Despite antibiotic treatment, the abscess ruptured into the trachea, requiring surgical intervention. This highlights the importance of maintaining asepsis during FNA of the thyroid. Timely diagnosis of a thyroid abscess is essential to avoid life-threatening airway complications.

Introduction: The objective of the current study was to test our hypothesis that older patients sustaining high energy trauma need to be evaluated for their comorbidities similar to geriatric patients sustaining low energy trauma. Materials and methods: This study was a retrospectiveprospective analysis of 173 patients of more than 50 years of age enrolled between November 2017 and December 2018. Herewith, we have compared retrospectively collected laboratory investigations of 124 fragility fracture patients with prospectively collected laboratory investigations of 49 patients with high energy trauma. The laboratory investigations, including the liver function tests, renal function tests, indices of calcium metabolism, serum electrolytes, complete blood counts, and bone mineral density (BMD) scores. Results: Both groups were similar to each other as far as baseline demographic characteristics were concerned. The proportion of female patients and patients with nonosteoporotic range BMD (T-score >-2.5) was significantly higher in the high-energy fracture group (P value <0.05). Hypoalbuminemia (<3.4gm/dl) 17.3%, abnormalities sodium (<135mmol/L or >148mmol/L) 23.2%, Anaemia (<10g/dl) 12.7%, Hypercalcemia (>10.4mg/dl) 16.3%, Vitamin D deficiency (<20ng/ml) 17.3% are the common laboratory abnormality found in study population. No statistically significant difference was found among the two groups in terms of laboratory investigation abnormalities. Conclusion: The laboratory investigation abnormality in an older patient with a clinical fracture is independent of the mechanism of injury. The results of the current study emphasise the need for a comprehensive laboratory workup in older patients with either high- energy fractures or fragility fractures.