Velcro hook-and-loop fasteners invented more than 70 years ago are examples of the mechanism inspired by tiny hooks found on surface burs a plant commonly known as burdock. Several ago, novel Velcro-like fastener made two arrays hook-shaped thin NiTi wires was developed. Unique features such fasteners, high thermally-tunable strength, fair force–stroke reproducibility, forceless contact or sile...

INTRODUCTION The purpose of this study was to determine whether final-year undergraduate dental students achieved better shaping outcomes using the new ProTaper Next (PTN; Dentsply Sirona, Ballaigues, Switzerland) system to prepare root canals for the first time compared with the existing ProTaper Universal (PTU, Dentsply Sirona) system on which they had trained. A secondary aim was to explore ...

Angiostrongylus costaricensis is a parasite that causes abdominal angiostrongyliasis in humans. The treatment for it includes the use of anti-inflammatory drugs, despite the lack of studies to justify this approach. The objective of this paper was to evaluate the effect of betamethasone and Arctium lappa on the evolution of intestinal lesions induced by this parasite. Adult male Swiss mice were...

OBJECTIVE The changes in fatigue resistance of nickel-titanium rotary ProFile instruments after clinical use for shaping 10 curved molar root canals were evaluated in this study. STUDY DESIGN Twenty-five sets of files #20, #25, and #30 and tapers .04 and .06 were divided into 2 groups, one with 10 sets of new files that were tested in a fatigue test bench device as a control. The other, exper...

Acne is a cutaneous pleomorphic disorder of the pilosebaceous unit involving abnormalities in sebum production and is characterized by both inflammatory (papules, pustules and nodules) and no inflammatory (comedones, open and closed) lesions. Propionibacterium acnes and Staphylococcus epidermidis are common pus-forming microbes responsible for the development of various forms of, acne vulgaris....