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Abstract：
Prosthodontic rehabilitation of acquired defects of the maxilla is a challenge in terms of reestablishing oronasal separation. Most of the times these goals are met by means of obturator prosthesis. Preservation of the remaining hard and soft tissues in such patients is very much essential in order to have a good retention, stability and support for the prosthesis. It is very much imperative to fabricate a prosthesis to provide proper function to the patient. Various techniques have been developed to enhance the retention and stability of the prosthesis, some of them being extension of the obturator bulb into the undercuts within the defect, use of magnets, implants etc. Telescopic crowns have been an adjunctive utility to prosthetic dentistry since a very long time. The biomechanics of telescopic crowns aid in providing a good retention and stability to the prosthesis. In the following clinical report a patient with a status of Subtotal Hemi Maxillectomy is presented in whom telescopic copings were incorporated into the cast hollow bulb obturator to enhance the retention and stability of the prosthesis.
摘要：
上颌骨获得性缺损的修复修复在重建口鼻分离方面是一个挑战。大多数情况下，这些目标都是通过闭孔假体来实现的。在这些患者中保留剩余的硬组织和软组织是非常重要的，以便具有良好的保留。稳定性和支持的假体。制造假体以给患者提供适当的功能是非常必要的。已经开发了各种技术来增强假体的保留和稳定性，其中一些是闭孔灯泡延伸到缺陷内的底切中，使用磁铁，植入物等。自很长一段时间以来，伸缩冠一直是假牙牙科的辅助用途。伸缩牙冠的生物力学有助于为假体提供良好的保持力和稳定性。在以下临床报告中，介绍了患有上颌骨小半切除术状态的患者，其中将伸缩盖结合到铸造的空心球塞中，以增强假体的保留和稳定性。
