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They have the advantage of being inert in the human body, and their hardness and resistance to abrasion makes them useful for bone and tooth replacement. Some ceramics also have excellent resistance to friction, making them useful as replacement materials for malfunctioning joints .
Parts-per-million cube of relative abundance by mass of elements in an average adult human body down to 1 ppm. About 99% of the mass of the human body is made up of six elements: oxygen, carbon, hydrogen, nitrogen, calcium, and phosphorus. Only about 0.85% is composed of another five elements: potassium, sulfur, sodium, chlorine, and magnesium ...
Related to the terpenes, resin acid is oxidized terpenes. Resin acids dissolve in alkalis to form resin soaps, from which the resin acids are regenerated upon treatment with acids. Examples of resin acids are abietic acid (sylvic acid), C 20 H 30 O 2, plicatic acid contained in cedar, and pimaric acid, C 20 H 30 O 2, a constituent of galipot ...
Cyanoacrylate adhesives may adhere to body parts, and injuries may occur when parts of the skin are torn off. [27] [28] Without force, however, the glue will spontaneously separate from the skin in time (up to four days). The glue can also cause chemical burns, and exposed skin should be washed with soap and warm water. [29]
Conventional glass ionomer cements (GICs) have many applications in dentistry. They are biocompatible with the dental pulp to some extent. Clinically, this material was initially used as a biomaterial to replace the lost osseous tissues in the human body. GIC fillings are a mixture of glass and an organic acid.
Gecko toes have the unique ability to adhere to most surfaces, including smooth glass. In 2014, a team at Stanford University scaled up the sticky structures found in tokay gecko toes to create a ...
Decals and stickers that adhere to glass without using any chemical adhesives are fairly common as toys and decorations and useful as removable labels because they do not rapidly lose their adhesive properties, as do sticky tapes that use adhesive chemical compounds.
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