Comparative Evaluation of the Efficiency in Retrieving Separated Reciprocating Instruments Using Three Different File Retrieval Systems in Maxillary First Molars: An Study.

Aim: The aim of this study was to compare and evaluate the retrieval time, efficiency, and loss of dentin volume after separated instrument retrieval using three different file retrieval systems in the middle and apical thirds of the mesio-buccal root of maxillary first molars.

Material And Methods: Sixty maxillary first molars were selected. Group 1: Endo Rescue Apex, Group 2: Ultrasound apex, Group 3: Broken instrument remover apex, Group 4: Endo Rescue Middle, Group 5: Ultrasound Middle, Group 6: Broken instrument Remover middle were used to retrieve the fractured reciprocating files from the root canals.

Nano Phosphorylated Pullulan-Integrated Carboxymethyl Chitosan Scaffold for Regeneration of the Pulp-Dentin Complex: An Study.

Background: To optimize a novel composite scaffold comprising of nano phosphorylated pullulan incorporated carboxymethyl chitosan (nPP-CMC) and to evaluate its cell viability and proliferation in human dental pulp stem cells (hDPSCs).

Methodology: Nano phosphorylated pullulan (nPP) in concentrations of 200 mg, 400 mg, 600 mg, 800 mg, and 1 g was vortexed in 20 mL of distilled water, followed by 30 mins of ultrasonication for even dispersion. 1 g of CMC was added to each nPP mixture, blended for 1 hour to form a hydrogel, and freeze-dried for 18 hours at -20°C to yield nPP-CMC scaffolds in ratios of 1:5, 2:5, 3:5, 4:5, and 1:1.

Evaluation of Microleakage in Zirconia Crown Systems Using Self-Adhesive Resin, Resin-Modified Glass Ionomer, and Glass Ionomer Cements: A Stereomicroscopic Study.

Introduction: Microleakage is a critical issue impacting the success of zirconia crown restorations. This study compares the effectiveness of self-adhesive resin cement, resin-modified glass ionomer cement, and glass ionomer cement in minimizing microleakage, aiming to enhance the longevity and reliability of zirconia crowns systems.

Materials And Methods: Thirty extracted premolars were collected, and all-ceramic preparation was done.

Comparative Evaluation of Microtissue-Engineered Root Dentin with Three Different Nanoparticles in Improving Fatigue Resistance of Endodontically Treated Teeth - An Study.

Aim: This study aims to analyze the fatigue resistance, surface mechanical properties, and biomechanical responsiveness of microtissue-engineered root dentin using cellulose nanofibers, hydroxyapatite nanocrystals, and walnut shell nanopowders.

Methodology: The objectives are to evaluate the differences in fatigue resistance and biomechanics and surface mechanical characteristics by infiltrating these nanomaterials into the root canal of endodontically treated teeth. Forty human permanent single-rooted teeth were collected with the patient's consent.

Routine use of jejunostomy tubes after esophagectomy: The good, the bad, and the ugly!

Objective: The study objective was to assess adverse events, readmissions, and resource use associated with routine jejunostomy tube placement after esophagectomy.

Methods: From September 2018 to October 2021, 215 patients, with a median age of 65 years and a median body mass index of 27 kg/m, underwent routine jejunostomy tube placement during esophagectomy. J-tube-related adverse events were collected from date of surgery to date of removal and categorized as (1) nonserious, resource-nonintensive (eg, skin irritations, discomfort); (2) nonserious, resource-intensive (eg, infection, clogged, and dislodged tubes); and (3) serious, resource-intensive (eg, bowel obstruction, volvulus, tube feed intolerance).