THE STUDY OF CLINICAL APPLICATION ON DENTAL IMPLANT AS RETAINER OF SURGICAL PROSTHESIS

本研究的目的是探讨在颌骨切除后应用颌面部和外科假体治疗手术缺损的患者中，种植体作为辅助固位体的使用，这些患者与缺损不太吻合。推进恶性肿瘤的治疗。与近年来恶性肿瘤治愈率的显著提高有关。颌面部肿瘤也是如此，这种肿瘤通过外科手术积极治疗，即切除癌灶和受影响的颌骨。然而，原发疾病可以通过广泛的根治性治疗治愈，但其手术后遗症，包括咀嚼、发音、吞咽功能障碍和由于下颌变形引起的审美问题正在增加。由于颌面假体用于颌骨的重大缺损，难以拟合，因此牙种植体用作固位体。即使在无牙颌本身或小的侧颌缺损带闭孔的情况下，颌面部假体也普遍稳定，牙种植体的使用进一步提供了良好而稳定的假体适应度。然而，如果颌骨缺损范围很广，种植体就会承受很大的压力，以换取稳定的适应性。为了防止所使用的假体在植入牙种植体后倾覆，从而获得稳定的颌面和外科假体的适应性，我们开发了颌面和外科假体，并设计了一种新的固定系统，用于修复体应用问题的患者。

The purpose of the present study is to investigate the use of an dental implant as a supplementary retainer in patients with maxillofacial and surgical prostheses applied to a surgical defect after resection of the jaw bones, which are not well fitted to the defect. Advance intreatment of malignant tumors.have been associated with the recent marked improvement in the cure rate of malignant tumors. It is also true in maxillofacial tumors, which are aggressively treated with surgical procedured, i.e., resection of carcinoma lesions and affected Jaw bones. However, primary disease is cured by extensive radical therapy, but its surgical sequelae, including functional disorders in mastication, pronunciation, swallowing, and esthetic problems due to jaw deformation are increasing. Since maxillofacial prosthesis used for such substantial defect of the jaw bone is hard to be fitted, the dental implant is used as a retainer.Maxillofacial prosthesis is generally stable even in edentulous jaw itself or with an obturator for a small anilateral jaw defect, and using of dental implant provides further favorable and stable fitness of prosthesis. However, if a jaw defect is extensive, a great strain is loaded on the dental implant in return for stable fitness. To attain stable fitness of maxillofacial and surgical prostheses by preventing the overturn of a applied prosthesis after inserting the dental implant, we have developed maxillofracial and surgical prosthses and devised a new retaining system for patients with problems of prosthetic application.