Parafunctional activity 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 on
United Grinding North America spindle, and the workpiece, mounted on either a reciprocating or a rotary table, is brought into contact with the grinding wheel. MÄGERLE machines are high-performance grinding systems for handling simple and complex surface and profile grinding tasks. BLOHM produces standard machines for individual and small batch production, as well as customized production machines. JUNG manufactures small and medium-sized grinding machines for fine finishing precision parts for the tool and die industry, automotive industry and its suppliers, electronics and optical industry as well as the aerospace industry and medical technology. UNITED GRINDING North America distributes cylindrical grinders from STUDER, SCHAUDT and