Purpose: To describe the clinical characteristics and surgical outcomes of patients with myopic tractional maculopathy (MTM) who underwent macular buckling (MB) surgery using a novel L-shaped buckle. Methods: A titanium stent, a style 507 sponge, and a silicone sleeve were used to create an L-shaped macular buckle. The titanium stent was bent through 90° over the last third. The sponge was cut to about 1 cm in length and placed on the extremity. The remaining part of the stent was then covered with a 2-cm-long silicone sleeve; the total buckle length was 3 cm. The buckle was implanted supero-temporally to allow access to the macular region. Intraoperative optical coherence tomography (Zeiss Rescan 700, Carl Zeiss, Jena, Germany) was performed to ensure that the buckle was appropriately positioned. Results: Three patients with MTM underwent MB surgery under general anesthesia. In all patients, the foveae lay at the greatest distances possible from the posterior staphyloma. Given the location of the posterior staphyloma and the posterior scleral expansion, anteroposterior traction was evident in every patient. After surgery, although the extent varied, all patients exhibited reduced anteroposterior traction, evidenced by decreased retinoschisis, staphyloma flattening, and smaller macular holes. In one case, vitrectomy was added to release epiretinal membrane-induced tangential traction. No patient reported any significant ocular complication after surgery. Conclusions MB using an L-shaped buckle, safely and efficiently relieves anteroposterior traction and improves the macular anatomy in patients with MTM.

PURPOSE: The aim of this study was to evaluate the effects of relining materials on the flexural strength of relined thermoplastic denture base resins (TDBRs). MATERIALS AND METHODS: For shear bond strength testing, 120 specimens were fabricated using four TDBRs (EstheShot-Bright, Acrytone, Valplast, Weldenz) that were bonded with three autopolymerizing denture relining resins (ADRRs: Vertex Self-Curing, Tokuyama Rebase, Ufi Gel Hard) with a bond area of 6.0 mm in diameter and were assigned to each group (n=10). For flexural strength testing, 120 specimens measuring 64.0×10.0×3.3 mm (ISO-1567:1999) were fabricated using four TDBRs and three ADRRs and were assigned to each group (n=10). The thickness of the specimens measured 2.0 mm of TDBR and 1.3 mm of ADRR. Forty specimens using four TDBRs and 30 specimens using ADRRs served as the control. All specimens were tested on a universal testing machine. For statistical analysis, Analysis of variance (ANOVA) with Tukey's test as post hoc and Spearman's correlation coefficient analysis (P=.05) were performed. RESULTS: Acry-Tone showed the highest shear bond strength, while Weldenz demonstrated the lowest bond strength between TDBR and ADRRs compared to other groups. EstheShot-Bright exhibited the highest flexural strength, while Weldenz showed the lowest flexural strength. Relined EstheShot-Bright demonstrated the highest flexural strength and relined Weldenz exhibited the lowest flexural strength (P < .05). Flexural strength of TDBRs (P=.001) and shear bond strength (P=.013) exhibited a positive correlation with the flexural strength of relined TDBRs. CONCLUSION: The flexural strength of relined TDBRs was affected by the flexural strength of the original denture base resins and bond strength between denture base resins and relining materials.
Denture Bases ; Denture Liners ; Denture Rebasing ; Dentures