Blood lymphocyte dehydrogenase activity (SDH, LDH, mitochondrial and cytoplasmic alpha-glycerophosphate dehydrogenase, NADH-diaphorase) was studied in 140 Wistar rats at different time intervals following intraosseous insertion of titanium implants. It was shown that implantation was accompanied with an increase in enzyme activities indicating a rise in the intensity of energy production processes. Cytochemical analysis of lymphocyte enzymes enables to formulate a "prognostic scenario" describing titanium implant interaction with biological environmental factors and organism tissues to assess the long-term results of implantation.
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BMC Oral Health
January 2025
Department of Fixed Prosthodontics, Faculty of Dentistry, Cairo University, Cairo, Egypt.
Background: Anatomically formed healing abutments were suggested in literature to address many of the issues associated with immediate posterior implant insertion such as large extraction sockets that are extremely hard to seal without reflecting the mucoperiosteal flap, extraction sockets anatomy that are not suitable for regular healing abutment placement, and potentially high occlusal stresses when planning a temporary implant supported prothesis to improve the conditioning of supra implant tissue architecture and the emergence profile of the implant supported restorations.
Purpose: To clinically evaluate the peri-implant soft tissue profile of single posterior implant retained restorations and to assess patient related outcomes of the implant restorations that were conditioned immediately by CAD-CAM socket sealing abutments (SSA) versus those conditioned by Titanium (Ti) standard healing abutments (SHA).
Methods: Twenty participants received twenty-two single maxillary immediate implants after flapless minimally invasive tooth extraction and 3D guided implant placement in the posterior area (premolar and molar) and allocated randomly into two groups (n = 11), the intervention group: patients received PEEK SSA and the control group: the patients received Ti SHA.
JSLS
January 2025
Gaziantep University Faculty of Medicine, Department of General Surgery, Gaziantep/Turkey. (Dr. Bulut).
Background: Appendectomy for acute appendicitis is the most common acute abdominal surgery. Open and laparoscopic appendectomy surgeries are performed with different techniques. Laparoscopic appendectomy has become a widespread method due to its advantages.
View Article and Find Full Text PDFMaterials (Basel)
December 2024
Institute of Mechanical Technology, Poznan University of Technology, 3 Piotrowo Street, 60-965 Poznan, Poland.
Titanium alloys, particularly Ti-6Al-4V, are widely used in many industries due to their high strength, low density, and corrosion resistance. However, machining these materials is challenging due to high strength at elevated temperatures, low thermal conductivity, and high chemical reactivity. This study investigates Recurrence Plot (RP) and Recurrence Quantification Analysis (RQA) to analyze tool wear during the finish turning of Ti-6Al-4V.
View Article and Find Full Text PDFInt J Oral Maxillofac Surg
January 2025
Department of Advanced General Dentistry, Faculty of Dentistry, Mahidol University, Bangkok, Thailand. Electronic address:
The aim of this study was to assess the stability of immediate dental implants in fresh molar extraction sockets and to compare those placed in the maxilla and mandible. This was a controlled, prospective, non-randomized clinical trial; the maxilla was the test group and the mandible was the control group. Thirty patients with an unrestorable molar tooth who needed immediate implant placement were included.
View Article and Find Full Text PDFHeliyon
January 2025
Institute of Energy Engineering, Dhaka University of Engineering & Technology, Gazipur, Bangladesh.
This study investigates the optimization of cutting conditions for machining titanium alloy (Ti-6Al-4V) using Response Surface Methodology (RSM), with the goal of minimizing tool-chip interface temperature and surface roughness. The research focuses on key cutting parameters to investigate the most effective combinations for enhancing surface finish and reducing thermal impact during machining. The present study deals with the dry turning of Ti-6Al-4V alloy with carbide alloy inserts in a way to utilize the Analysis of Variance (ANOVA) to develop predictive models for minimum surface roughness and optimum temperature.
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