Parafunctional activity crew. Parafunctional activity A para-functional habit or parafunctional habit is the habitual exercise of a body part in a way that is other than the most common use of that body part. The term is most commonly used by dentists, orthodontists, or maxillofacial specialists to refer to para-functional uses of the mouth, tongue and jaw. Oral para-functional habits may include bruxism (tooth-clenching and/or grinding), tongue tension ("tongue thrusting"), fingernail biting, pencil or pen chewing, mouth breathing, and any other habitual use of the mouth unrelated to eating, drinking, or speaking. Crenated tongue is a descriptive term for when scalloping develops
United Grinding North America are used in diverse industries such as the automotive industry and its suppliers, the tool industry, power plant turbine manufacture, tool and die makers, medical technology, machine tools, clock and watch manufacturers as well as the turbine industry. MÄGERLE, BLOHM and JUNG offer machines for surface grinding, the most common form of grinding that produces smooth finishes on flat surfaces and Machines, and profile grinding, the grinding of cylindrical work without traversing the wheel whose periphery is profiled to the form required and extends over the full length of the work. In Surface grinding, the grinding wheel revolves on a