A scoping review on traditional medicine for bruxism

Objective:To investigate the current evidence on traditional medicine in managing bruxism and its clinical efficacy.Methods:A search was conducted in nine databases to identify potential eligible articles published from the date of inception until August 3,2022.All clinical studies that used traditional medicine of any type in treating bruxism were eligible for inclusion.Two authors performed data extraction and quality as-sessments independently.Retrieved data were tabulated and discussed narratively.Results:A total of 16 clinical studies were included in this scoping review.Of the 16 studies,three studies were randomized controlled trials,one was a caseecontrol study,10 were case series,and two were case reports.Our review identified studies of interventions based on herbal medicine and acupuncture-related therapies.Most studies reported positive results,but the overall quality of the included studies was typically fair to poor.Conclusions:This study is the first scoping review on traditional medicine for bruxism despite the limited evidence.More research on traditional medicine in bruxism management should be conducted for better clarification and application in daily practice.

Conceptual Design of Hybrid Cable-Stayed Bridge with Central Span of 1000 m Using UHPC

Ultra-high performance concrete (UHPC) is featured by a compressive strength 5 times higher than that of ordinary concrete and by a high durability owing to the control of the chloride penetration speed by its dense structure. The high strength characteristics of UHPC offer numerous advantages like the reduction of the quantities of cables and foundations by the design of a lightweight superstructure in the case of the long-span bridge preserving its structural performance through axial forces and structures governed by compression. This study conducted the conceptual design of a hybrid cable-stayed bridge with central span of 1000 m and exploiting 200 MPa-class UHPC. The economic efficiency of the conceptual design results of the hybrid cable-stayed bridge with central span of 1000 m and of Sutong Bridge, the longest cable-stayed bridge in the world, was analyzed.

Development of an Efficient Tapered Slip-Form System Applying BIM Technology

Slip-form system constitutes the latest technology for the erection of elevated concrete pylons. This paper investigates the design of slip-form system applying BIM technology for the efficient development of the slip-form system. The considered pylon has a height of 10 m and presents the rectangular hollow section generally adopted in cable-supported bridges. The slip-form was thus designed to accommodate the tapered cross-section and changing thickness considering the continuous placing of concrete. In addition, the safety of the system was examined with regard to the various loads applied on the slip form along the construction. The design results could be verified visually through BIM and the applicability of the designed slip-form was validated in advance through virtual assembly and construction.

A Study on the Quality Control of Concrete during the Slip Form Erection of Pylon

The construction market of super-high-rise buildings and long-span bridges has recognized unprecedented expansion owing to the development of high performance and high strength materials and the advances achieved in the design and construction technologies. In parallel to the lengthening and enlargement in scale of the structures, securing quality control technology of concrete while reducing the construction duration using improved construction methods emerges as a critical problem for concrete structures. In the erection of concrete pylons, slip forming represents the latest method offering the advantage of reducing drastically the construction duration compared to other methods by adopting automated slip-up of the forms and enabling 24-hour continuous placing. This study determines the slip-up time of the slip form by evaluating the early strength through the surface wave velocity and develops lightweight GFRP form in order to secure the quality of concrete during the slip form erection of pylons. A slip form system is fabricated and mockup test is conducted to verify the performances of the developed techniques through the construction of 10 m-high pylon with a hollow section.