Sapporo Medical Journal

Abstract : Background: Burnout and the intention to leave are significant challenges in the nursing profession, particularly among public health nurses who face high levels of job-related stress. Aim: This study aimed to assess the levels of burnout and intention to leave among public health nurses in Jordan and to explore the relationship between these variables. Methods: A cross-sectional study was conducted with 350 public health nurses from various healthcare settings across Jordan. Data were collected using a structured questionnaire that included the Maslach Burnout Inventory (MBI) to measure burnout and a standardized scale to assess the intention to leave. Descriptive statistics were used to summarize the sociodemographic characteristics, burnout levels, and intention to leave scores. Pearson’s correlation was used to examine the relationships between burnout dimensions (Emotional Exhaustion, Depersonalization, Personal Accomplishment) and intention to leave. Results: The results indicated that 51.4% of the nurses experienced moderate levels of emotional exhaustion, 45.7% reported moderate levels of depersonalization, and 45.7% had moderate levels of personal accomplishment. The overall intention to leave was high, with a mean total score of 18.6 (SD = 2.3). Correlation analysis revealed weak, non-significant relationships between burnout dimensions and intention to leave, suggesting that other factors may also contribute to the decision to leave. Conclusion: The study highligh

Abstract : Introduction: Occlusal overloading compromises dental implant durability but using thermoplastic materials for bars in implant-supported overdentures is an effective solution to this problem. Aim: Evaluate the impact of using Polyetherketoneketone (PEKK) and Bio High-Performance Polymer (BioHPP) CAD/CAM materials on stress distribution around implants in bar-retained implant-supported prostheses. Materials and methods: A mandibular 3D-printed cast model from epoxy resin was used for this study, with selected implant sites surrounded by channels to allow a 2mm resin thickness between strain gauge rosettes and the implant. Two implants were inserted parallel to their sites in the model, and Ti-base abutments were screwed in. The impression was digitally scanned, and dental bars were designed. Eight identical bars (n=4) (four BioHPP and four PEKK) were milled using CAD/CAM. Strain gauges measured micro-strain around the implants, and stress analysis was conducted using a universal testing machine. Results were collected, tabulated, and analyzed with statistical software. Results: BioHPP milled bars have shown less force-transmitted and less traumatic effects on the implant and supporting structures. conclusion BioHPP CAD-CAM Materials can be used as Bar-Retained Implant-Supported Prostheses

Abstract : Introduction: The purpose of this study was to evaluate the fitness of the removable partial dentures peek framework made using two distinct fabrication techniques (fabricated by milling via CAD-CAM and injection molding technique). Materials and Methods: A total number of 18 samples were used. The specimens are categorized into two major groups., I and II are each composed of PEEK RPD frameworks for a maxillary class III modification 1 Kennedy classification. Group (I): Frameworks produced by milling via CAD-CAM technique.Group (II): Frameworks produced by injection molding technique. Results: For overall framework adaption, group II(produced by injection molding technique) provided the lowest value (least fit), whereas group I (produced by milling via CAD-CAM technique) provided the highest value (best fit).

Abstract : Abstract Objective: The current study was carried out to compare the shear bond strength of the rebonded ceramic bracket after using different techniques for removal of the adhesive from the debonded brackets base to find the most favorable method for recycling ceramic brackets. Materials and Methods: Sixty premolar teeth were randomly divided into 4 equal groups (n = 15) then embedded in resin blocks with their crowns exposed. Sixty upper premolar ceramic orthodontic brackets were used in this study and were divided into 4 equal groups (n = 15) according to different adhesive resin removal protocols; Control Group (New brackets), Laser Group, Sandblast Group, and Handpiece Group. Then ceramic brackets were rebonded and the shear bond strength of the rebonded brackets was evaluated using a universal testing machine. All collected data were statistically analyzed. Results: The highest statistically significant shear bond strength mean value was revealed between control group (13.2302MPa) and handpiece (carbide bur) as it is showed smallest mean (6.1863MPa). While there was no statistically significant difference between Control group vs Laser group and Sandblast group. Conclusion: Er,Cr:YSGG laser and Sandblasting were efficient for recondition of mechanically retentive ceramic brackets. Keywords: Rebonded Ceramic brackets, Er,Cr:YSGG laser, Sandblasting, Tungsten carbide bur

Abstract : n the context of searching for a new molecular markers that contribute to under standing the pathological mechanisms of breast cancer and this aims to develop targeted and promising treatment lines. Several experiment studies have clarified the role of Long non-coding RNA molecules in the occurrence of breast cancer. HOTAIR molecule as LncRNA molecule has been extensively studied as a tumer promoter by controlling of gene expression number of genes related to cancer at several molecular levels. This is done through experimental and interventional studies on breast cancer cell lines and tissues. In this study, we tried to approach its expression level in patient’s plasma and compare it to healthy controls.