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"They have been deemed effective and safe methods for teeth whitening at home," she says. Strips can brighten your smile over time, but they’re not the best option if you have deep, ...
Brighten up your smile in days or weeks with effective at-home teeth whitening options.
TPE is commonly used to make suspension bushings for automotive performance applications because of its greater resistance to deformation when compared to regular rubber bushings. Thermoplastics have experienced growth in the heating, ventilation, and air conditioning ( HVAC ) industry due to the function, cost effectiveness and adaptability to ...
Tooth whitening or tooth bleaching is the process of lightening the colour of human teeth. [1] Whitening is often desirable when teeth become yellowed over time for a number of reasons, and can be achieved by changing the intrinsic or extrinsic colour of the tooth enamel. [2]
TPU is the right choice when flexibility at low temperatures and/or an abrasion resistant thermoplastic elastomer (TPE) is requested. Polyether-based TPU in cases where additional excellent hydrolysis and microbial resistance is required, as well as in cases where extreme low-temperature flexibility is important. Ester-based TPU in cases where ...
In its uncured state, silicone rubber is a highly adhesive gel or liquid. To convert it to a solid, it must be cured, vulcanized, or catalyzed.This is normally carried out in a two-stage process at the point of manufacture into the desired shape, and then in a prolonged post-cure process.
Octamethylcyclotetrasiloxane, also called D 4, is an organosilicon compound and one of a number of cyclic siloxanes (cyclomethicones). It is a colorless viscous liquid with a high boiling point.
VFRs, if worn 24 hours per day, do not allow the upper and lower teeth to touch, as the retainers cover the occlusal (biting) surfaces of the teeth. [8] Some orthodontists feel that it is important for the top and bottom chewing surfaces to meet to allow for "favourable settling" to occur, thus the need for wearing the retainer only ...