Woodmansey Karl F, Ayik Murat, Buschang Peter H, White Cathy A, He Jianing
Department of Endodontics, Baylor College of Dentistry, The Texas A&M University System Health Science Center, Dallas, Texas 75246, USA.
J Endod. 2009 Jan;35(1):10-4. doi: 10.1016/j.joen.2008.10.016. Epub 2008 Nov 18.
Endodontic treatment and dental implants are both viable treatment options to restore a compromised dentition. How these treatments impact patients' ability to chew has not been studied. The purpose of this study was to compare various parameters of masticatory function in patients with endodontically treated teeth and single-implant supported prostheses. Fifty patients were included in this study. Twenty-five patients had mandibular molar root canals, and 25 had single implant-supported prostheses in the mandibular molar region. The natural tooth contralateral to the treated side served as the internal control. Maximum bite force, chewing efficiency, and areas of occlusal contact and near contact (ACNC) were recorded for each subject, along with a questionnaire to evaluate subjective chewing ability. When compared with contralateral controls, dental implants were found to have significantly lower maximum bite forces, reduced chewing efficiency, and smaller ACNC. Endodontically treated teeth were not statistically different than their contralateral controls. These results indicate that endodontically treated natural teeth may provide more effective occlusal contact during masticatory function compared with implant-supported restorations, leading to more efficient mastication.
牙髓治疗和牙种植体都是修复受损牙列的可行治疗选择。这些治疗如何影响患者的咀嚼能力尚未得到研究。本研究的目的是比较接受牙髓治疗的牙齿和单种植体支持修复体患者的咀嚼功能的各种参数。本研究纳入了50名患者。25名患者有下颌磨牙根管治疗，25名患者在下颌磨牙区有单种植体支持修复体。治疗侧对侧的天然牙作为内部对照。记录了每个受试者的最大咬合力、咀嚼效率、咬合接触面积和近接触面积（ACNC），并通过问卷评估主观咀嚼能力。与对侧对照相比，发现牙种植体的最大咬合力显著降低，咀嚼效率降低，ACNC更小。接受牙髓治疗的牙齿与对侧对照相比无统计学差异。这些结果表明，与种植体支持的修复体相比，接受牙髓治疗的天然牙在咀嚼功能期间可能提供更有效的咬合接触，从而导致更高效的咀嚼。
