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Dental attrition is a type of tooth wear caused by tooth-to-tooth contact, [1] resulting in loss of tooth tissue, usually starting at the incisal or occlusal surfaces. Tooth wear is a physiological process and is commonly seen as a normal part of aging.
Bruxism is excessive teeth grinding or jaw clenching. It is an oral parafunctional activity; [1] i.e., it is unrelated to normal function such as eating or talking. Bruxism is a common behavior; the global prevalence of bruxism (both sleep and awake) is 22.22%. [2]
These timelines of world history detail recorded events since the creation of writing roughly 5000 years ago to the present day. For events from c. 3200 BC – c. 500 see: Timeline of ancient history; For events from c. 500 – c. 1499, see: Timeline of post-classical history; For events from c. 1500, see: Timelines of modern history
Timeline of Warren County, Indiana history; Timeline of the Watergate scandal; Timeline of women in the United States; Women in dentistry in the United States; Timeline of women in mathematics in the United States; Timeline of women in religion in the United States; Timeline of women in science in the United States
The date used as the end of the ancient era is arbitrary. The transition period from Classical Antiquity to the Early Middle Ages is known as Late Antiquity.Late Antiquity is a periodization used by historians to describe the transitional centuries from Classical Antiquity to the Middle Ages, in both mainland Europe and the Mediterranean world: generally from the end of the Roman Empire's ...
Genocide by attrition is the prohibited act of "deliberately inflicting on the group conditions of life calculated to bring about its physical destruction in whole or in part". [ 1 ] [ 2 ] References
Occlusal trauma; Secondary occlusal trauma on X-ray film displays two lone-standing mandibular teeth, the lower left first premolar and canine. As the remnants of a once full complement of 16 lower teeth, these two teeth have been alone in opposing the forces associated with mastication for some time, as can be evidenced by the widened PDL surrounding the premolar.
The Zizhi Tongjian, a work in chronicle format published a few decades after the New Book of Tang, is largely in agreement with the Books of Tang, [8] [9] but also reconstructs a more detailed timeline of the siege, according to which food supplies started to run out in July, four months before the fall of the city. At that time, only 1,600 ...