Bruxism unaccompanied by mandibular movements."A movement disorder of the masticatory system characterized by teeth-grinding and clenching during sleep as well as wakefulness." "Non-functional contact of the mandibular and maxillary teeth resulting in clenching or tooth grinding due to repetitive, unconscious contraction of the masseter and temporalis muscles." "Parafunctional grinding of teeth or an oral habit consisting of involuntary rhythmic or spasmodic non-functional gnashing, grinding or clenching of teeth in other than chewing movements of the mandible which may lead to occlusal trauma." "Periodic repetitive clenching or rhythmic forceful grinding of the teeth." Bruxism can be subdivided into two types based upon
The Grinding Wheel The Grinding Wheel The Grinding Wheel is the 18th studio album by American thrash metal band Overkill, released on February 10, 2017. It is the last Overkill album with drummer Ron Lipnicki, who left the band shortly after its release and was replaced by Jason Bittner (formerly of Shadows Fall and Flotsam and Jetsam) for the album's tour and its follow-up "The Wings of War" (2019). Vocalist Bobby "Blitz" Ellsworth said about the album's style: "At the end of the day Overkill is Overkill. Our trademark is that we are always recognizable on every release. For the three decades we