Drum W
J Periodontol. 1975 Aug;46(8):504-10. doi: 10.1902/jop.1975.46.8.504.
Both the inflammatory and noninflammatory types of periodontal diseases begin with an aseptic, traumatic destruction of alveolar bone, caused by traumatizing parafunctions and followed by changes in the gingiva. The latter may or may not have a superimposed infectious inflammatory process. A new concept to fit these facts is proposed: periodontal diseases are autodestructive processes in the masticatory system, with or without superimposed septic inflammation. To confirm the theory of autodestruction, direct evidence as well as indirect but conclusive evidence is given for the existence of traumatizing forces in the masticatory system, for traumatic destruction of alveolar bone, for changes in the gingiva following destruction of alveolar bone, and for the parafunctions by all persons afflicted by periodontal disease. It is concluded that traumatizing parafunctions are the main factor in the etiology of periodontal diseases and that in therapy recurrences are inevitable unless parafunctions have been eliminated.
炎症性和非炎症性牙周疾病均始于无菌性、由异常功能创伤引起的牙槽骨创伤性破坏，随后牙龈发生改变。后者可能有也可能没有叠加的感染性炎症过程。提出了一个符合这些事实的新概念：牙周疾病是咀嚼系统的自毁性过程，伴有或不伴有叠加的化脓性炎症。为了证实自毁理论，给出了直接证据以及间接但确凿的证据，证明咀嚼系统中存在创伤力、牙槽骨的创伤性破坏、牙槽骨破坏后牙龈的变化以及所有牙周病患者的异常功能。得出的结论是，创伤性异常功能是牙周疾病病因中的主要因素，并且在治疗中，除非消除异常功能，否则复发是不可避免的。
