Finite element analysis of the effects of periodontal tissue temperature by continuous wave technique.

Objectives: The safety of root canal filling with 200 °C hot gutta-percha was investigated to study the effect of continuous wave technique combined with high-temperature injectable gutta-percha condensation technique on the surface temperature of periodontal tissue.

Methods: CT technique and Mimics, Geomagic, and Solidworks software were utilized to build the entity models of alveolar bone, dentin and root canal, periodontal ligament, and blood flow, respectively, which were then assembled in Solidworks into a finite element model of tooth with blood flow. By utilizing ABAQUS collaborative simulation platform, fluid-structure coupling was analyzed on the whole process of root canal filling.

Biliary microbiota and mucin 4 impact the calcification of cholesterol gallstones.

Background: Cholesterol gallstones account for over 80% of gallstones, and the pathogenesis of gallstone formation involves genetic and environmental factors. However, data on the evolution of cholesterol gallstones with various densities are limited. This study aimed to determine the roles of microbiota and mucins on the formation of calcified cholesterol gallstones in patients with cholelithiasis.

A spontaneous hematoma arising within an intrapancreatic accessory spleen: A case report and literature review.

Rational: Hematoma arising within an intrapancreatic accessory spleen (IPAS) is an extremely rare pathological entity.

Patient Concern: We present the case of a 39-year-old man with acute abdominal pain.

Diagnoses: The patient was initially diagnosed as pancreatic cystic neoplasm according to CT and MRI imaging.

Hepatitis C Virus Infection Is Positively Associated with Gallstones in Liver Cirrhosis.

Aim: To elucidate the prevalence and risk factors of gallstone disease (GD) among patients with liver disease and explore their association with the aetiology and severity of hepatic injury.

Methods: We analysed 4,832 subjects of hepatic injury induced by one of the following aetiologies: hepatitis B virus (HBV) infection, hepatitis C virus (HCV) infection, excessive alcohol consumption. The risk factors significantly associated with GD were analysed using stepwise logistic regression analysis, the influence of aetiology and severity of liver disease on the prevalence of GD were assessed by multiple logistic regression analysis adjusting for confounding factors.

Helicobacter pylori infection is associated with gallstones: Epidemiological survey in China.

Aim: To elucidate the prevalence and risk factors for gallstones, primarily focusing on Helicobacter pylori (H. pylori) infection.

Methods: A total of 10016 Chinese subjects, who had undergone physical examination, fasting (13)C urea breath test and abdominal ultrasonography, had sufficient blood test data, and had finished a questionnaire, were included in this cross-sectional study.

Gastric foreign body granuloma caused by an embedded fishbone: a case report.

Fishbones are the most commonly ingested foreign bodies that cause gastrointestinal tract penetration. However, fishbones embedded in the gastrointestinal tract that lead to foreign body granulomas that mimic submucosal tumors are rare. Herein, we describe a 56-year-old woman who presented with a 20-day-history of upper abdominal pain.

Clonal immunoglobulin heavy chain and T-cell receptor γ gene rearrangements in primary gastric lymphoma.

Aim: To study the diagnostic value of immunoglobulin heavy chain (IgH) and T-cell receptor γ (TCR-γ) gene monoclonal rearrangements in primary gastric lymphoma (PGL).

Methods: A total of 48 patients with suspected PGL at our hospital were prospectively enrolled in this study from January 2009 to December 2011. The patients were divided into three groups (a PGL group, a gastric linitis plastica group, and a benign gastric ulcer group) based on the pathological results (gastric mucosal specimens obtained by endoscopy or surgery) and follow-up.

Diffuse liver infiltration by melanoma of unknown primary origin: one case report and literature review.

Diffuse liver infiltration by melanoma of unknown primary origin is rare. We encountered a unique case of diffuse liver infiltration by melanoma of unknown primary origin in our hospital. A 62-year-old woman was referred to our hospital for anorexia of 6 months duration and abdominal distension for 1 month.

The value of endoscopic ultrasonography on diagnosis and treatment of esophageal hamartoma.

Objective: To examine the values of endoscopic ultrasonography (EUS) on diagnosis and treatment of esophageal hamartoma.

Methods: We compared and analyzed various kinds of imaging examinations such as barium esophagram, contrast-enhanced computed tomography (CT) and conventional gastroscopy in retrospectively reviewing the clinical data of an esophageal hamartoma patient seen in our clinic in the First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China. Having received various imaging examinations, this patient was finally diagnosed with esophageal hamartoma and underwent gastroscopic resection of hamartoma with the diagnostic information obtained from EUS.