Bruxism bruxism), but also possibly grinding, and is often associated with other semivoluntary oral habits such as cheek biting, nail biting, chewing on a pen or pencil absent mindedly, or tongue thrusting (where the tongue is pushed against the front teeth forcefully). There is evidence that sleep bruxism is caused by mechanisms related to the central nervous system, involving sleep arousal and neurotransmitter abnormalities. Underlying these factors may be psychosocial factors including daytime stress which is disrupting peaceful sleep. Sleep bruxism is mainly characterized by "rhythmic masticatory muscle activity" (RMMA) at a frequency of about once per second, and also with
United Grinding North America MIKROSA. Cylindrical grinding is a process that forms the outside of an object. Common applications are cylinders, an ellipse, a cam or crankshaft. STUDER manufactures internal and external cylindrical grinders for small and mid-sized workpieces. The brand consists of more than twenty different machines ranging from standard machines to complex system solutions for tool and die makers, the automotive and aerospace industry, pneumatics/hydraulics, electronics/electrical engineering, medical technology, the watch industry and job order production. SCHAUDT supplies solutions for cylindrical grinding, noncircular grinding and universal grinding between centers. Common applications are grinding camshafts, crankshafts or gear shafts in the automotive industry