Anupam Purwar, Anandakrishna G N, Vibha Shetty, Suma Janya, Shally Khanna
Department of Prosthodontics, Purvanchal Institute of Dental Sciences, Gorakhpur, Uttar Pradesh India.
Department of Prosthodontics, M.S. Ramaiah Dental College and Hospital, Bengaluru, India.
J Indian Prosthodont Soc. 2014 Dec;14(Suppl 1):328-33. doi: 10.1007/s13191-012-0194-x. Epub 2012 Oct 19.
The preservation of remaining root structure and alveolar bone covering them with denture has been used since many years. Tooth-retained overdentures transfer occlusal forces to the alveolar bone through the periodontal ligament of the retained tooth roots and thereby prevent bone resorption. Applications of magnets in overdenture technique has been widely used in dentistry in the field of prosthodontics, as they can be manufactured in small dimensions as retentive devices for complete denture, removable partial dentures, obturators and maxillofacial prosthesis. This article presents a simple and efficient method of fabrication of mandibular over denture retained by magnets in a patient whose mandibular residual ridge is severely resorbed with few remaining teeth and maxillary conventional removable partial denture. Mandibular over denture retained by magnets assembly consist of magnet and coping with keeper on remaining tooth structure to rehabilitate the patient since magnetic attachments can provide support, stability and retention.
多年来，一直采用保留剩余牙根结构并用义齿覆盖其牙槽骨的方法。牙支持式覆盖义齿通过保留牙根的牙周韧带将咬合力传递至牙槽骨，从而防止骨吸收。磁体在覆盖义齿技术中的应用已在口腔修复学领域广泛用于牙科，因为磁体可以制成小尺寸，作为全口义齿、可摘局部义齿、阻塞器和颌面修复体的固位装置。本文介绍了一种为下颌残余牙槽嵴严重吸收、余留牙少且上颌为传统可摘局部义齿的患者制作磁体固位下颌覆盖义齿的简单有效方法。磁体固位下颌覆盖义齿组件由磁体和附着于剩余牙结构上的衔铁组成，以修复患者，因为磁性附着体可提供支持、稳定和固位作用。
