Purpose: To compare hearing results and complication rates between two groups of patients operated on by endoscopic stapes surgery (ESS) for otosclerosis, either with CO fiber laser or microdrill.
Methods: A case-control study was performed. All consecutive cases of CO fiber laser ESS operated at a single center during the period 2017-2020 (case group) were matched to a control group of patients operated by traditional technique, according to year of surgery, preoperative mean air-bone gap, sex and age. Audiological data from preoperative and postoperative examinations and complication rates were compared.
Results: 46 cases were included. Mean operative time was significantly longer in the laser cohort (65 min) than in the drill one (45 min) (p = 0.003). Similar results were found in the two groups regarding the mean postoperative BC-PTA. The high-frequency bone conduction resulted significantly higher in the laser group (p = 0.002), suggesting an overclosure effect in the laser group. Consistently, a significant improvement of the BC-PTA threshold at 2000 Hz postoperatively was found in the laser group (p = 0.034). The postoperative AC-PTA significantly improved in both groups at all frequencies (p < 0.05), except for the AC threshold at 8 kHz. Similar rates of complications were found in the two groups.
Conclusion: This study is the first to compare hearing results and complications between CO fiber laser and microdrill in ESS. Our results demonstrated similar functional outcomes between the two groups, confirming ESS as safe and effective, regardless of the technique used.
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http://dx.doi.org/10.1007/s00405-022-07739-3 | DOI Listing |
Lasers Med Sci
January 2025
Department of Stomatology, the First Medical Centre, Chinese PLA General Hospital, Beijing, 100853, China.
Objective: This study evaluated dentin morphology and pulp cavity temperature changes during nanosecond‑ and microsecond‑pulse Er, Cr: YSGG laser debonding restoration and residual adhesive.
Materials And Methods: Ten caries-free teeth had their enamel removed perpendicular to the long axis, followed by bonding of glass ceramic restorations. The samples were randomly divided into two groups and subjected to Er, Cr: YSGG laser (3 mJ, 100 Hz, 100 ns), (3 mJ, 100 Hz, 150 µs) for debonding of restoration and residual adhesive on dentin surfaces.
Nanomaterials (Basel)
December 2024
State Key Laboratory of High Power Semiconductor Lasers, School of Physics, Changchun University of Science and Technology, Changchun 130022, China.
As an emerging two-dimensional (2D) Group-VA material, bismuth selenide (BiSe) exhibits favorable electrical and optical properties. Here, three distinct morphologies of BiSe were obtained from bulk BiSe through electrochemical intercalation exfoliation. And the morphologies of these nanostructures can be tuned by adjusting solvent polarity during exfoliation.
View Article and Find Full Text PDFLasers Surg Med
January 2025
Dermatology, Venereology and Andrology Department, Faculty of Medicine, Tanta University, Tanta, Egypt.
Background: Alopecia areata (AA) is a chronic inflammatory disease that affects the hair follicles and sometimes the nails. It usually presents as a single or multiple patches of hair loss on the scalp, but any hair-bearing skin can be involved. AA treatment depends on the severity and extent of the disease.
View Article and Find Full Text PDFWorld J Urol
January 2025
Department of Urology, Zhangjiagang Hospital Affiliated to Soochow University, Suzhou, Jiangsu, China.
Purpose: The purpose of this study was to investigate the efficacy of Transurethral Holmium Laser of the Prostate (HoLEP) with Double-n Technology in the treatment of benign prostatic hyperplasia (BPH), with a focus on preserving sexual function postoperatively.
Methods: Conducted as a multicenter, prospective, single-blind randomized controlled trial, this study enrolled sexually active male patients with BPH. Participants were randomized into three groups: standard HoLEP (Group A), single-n technology (Group B), and innovative double-n technology (Group C), which emphasizes the preservation of the urethral mucosa and nearby structures.
Sci Rep
January 2025
Department of Gynecology, Guilin People's Hospital, Guilin, 541002, China.
To investigate the efficacy and mechanisms of fractional CO2 laser treatment for Vaginal Relaxation Syndrome (VRS) combined with recurrent bacterial vaginitis. Patients with VRS and recurrent bacterial vaginitis were randomly assigned to an intervention group (n = 60) receiving fractional CO2 laser therapy in addition to metronidazole, or a control group (n = 60) receiving metronidazole alone. Post-treatment assessments included vaginal relaxation, vaginal health index (VHI) scores, lactobacilli distribution, vaginal pH, recurrence rates, and the correlation between lactobacilli distribution and VHI.
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