This study investigates the release of metal ions from commonly used orthodontic archwires, specifically, stainless steel (SS), nickel–titanium (NiTi), chromium–cobalt (CrCo), and titanium–molybdenum (TMA) alloys. To simulate oral conditions, each type of wire was immersed in artificial saliva at body temperature for a four-week period. Ion release levels were analyzed through ICP-OES mass spectrometry. The findings indicate that NiTi and CrCo wires released significantly higher amounts of nickel (Ni) and chromium (Cr) ions compared to SS wires. These findings underscore the potential risk of allergic reactions, particularly to nickel, and emphasize the need for careful consideration of biocompatibility in orthodontic material selection. This research also provides valuable insights aimed at minimizing adverse reactions in patients, especially those with metal allergies.

This study investigates the cytotoxicity of various orthodontic archwires, which are essential in directing tooth movement through biomechanical forces. With advancements in material science, different archwire materials have been developed to balance mechanical performance with aesthetic and biological considerations. The study focuses on evaluating the biocompatibility and mechanical properties of stainless steel, nickel–titanium, and chromium–cobalt archwires, particularly their cytotoxic effects on oral cavity cells. In vitro cell culture experiments with fibroblasts, combined with scanning electron microscopy (SEM) analysis, were conducted to assess cell viability and morphology. The results revealed significant differences in cytotoxicity, with copper wires showing high toxicity and causing extensive cell death, while nickel–titanium and chromium–cobalt wires supported better cell viability and healthier cell morphology. These findings highlight the importance of selecting archwire materials that ensure mechanical efficiency without compromising cellular health, emphasizing the need for ongoing assessment of material biocompatibility in the oral environment.

Introduction and objective: The use of cannabinoids, particularly Δ9-tetrahydrocannabinol (THC) and cannabidiol (CBD), in dentistry has gained attention due to their therapeutic potential and complex pharmacokinetics. These cannabinoids interact with CB1 and CB2 receptors, which are crucial...

The present review evaluates the impact of foam rolling on muscle recovery, with a particular focus on muscle strength, lactate clearance, range of motion, and delayed onset muscle soreness (DOMS). The analysis synthesizes findings from multiple studies, indicating that foam rolling may preserve muscle strength, reduce lactate accumulation, and alleviate DOMS following intense physical exertion. Evidence from various athletic populations suggests that foam rolling effectively minimizes the decline in isometric and explosive strength post-exercise, particularly in the lower limbs, while also decreasing subjective fatigue and improving proprioception. The application of vibration during foam rolling may further enhance perfusion, promoting metabolic clearance, though these effects are transient. Additionally, foam rolling appears to reduce muscle soreness at 24, 48, and 72 hours post-exercise, with some studies suggesting comparable efficacy to active recovery methods. However, inconsistencies in study design, intervention duration, and roller type limit the generalization of findings. Consequently, while foam rolling shows promise as a supplementary recovery tool, further research is warranted to standardize protocols and elucidate its long-term efficacy.

Introduction and objective: Osteoporosis is a chronic skeletal disease the significance of which is growing due to the aging of the population. In the diagnostics of this condition, the assessment of bone mineral density plays a crucial role, as well as tools, such as the FRAX calculator, which...