상악골 절제술을 받은 부분 무치악 환자에서 생역학을 고려해 제작한 구개 폐색장치를 이용한 보철 수복 증례
Prosthetic rehabilitation by obturator considering the biomechanics in partially edentulous patient after maxillectomy
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초록
상악골 절제술을 받은 환자는 구개부의 결손으로 인해 연하, 저작, 발음 기능이 심각하게 손상되는데, 식사 시 비강과 코를 통한 누출이 있게 되고, 치아 및 치조제의 소실로 저작이 어려워지며, 구강과 비강이 분리되지 않아 과비음이 발생하는 등 삶의 질이 현저히 저하된다. 결손부를 보철적으로 재건하기 위해서는 폐색장치의 무게를 최대한 줄여 중력에 의한 탈락을 최소화하고, 폐색장치의 bulb를 결손부 내로 적절히 연장시켜 부가적인 유지, 안정을 얻도록 해야 한다. 본 증례는 종양의 재발로 인해 추가적인 상악골 절제를 받은 부분 무치악 환자에서 가철성 국소의치의 기본적인 설계 원칙을 적용하여 금속 구조물을 디자인하고, 기능 인상을 통해 유지, 안정, 지지를 향상시킨 폐색장치를 제작하였다. 환자는 개선된 안모 및 저작, 연하, 발음 기능 향상에 만족하였고, 경과관찰 기간 동안 안정적인 교합 및 구강위생관리를 보여 이를 보고하는 바이다.
Abstract
Patients who went through maxillectomy can have severely impaired swallowing, mastication, and pronunciation functions because of palatal defects. Leakage occurs through the nasal cavity while eating, chewing becomes difficult due to the loss of teeth and alveolar ridges, and oral and nasal passages are not separated, leading to hyper-nasal sound, and significantly reducing the quality of life. To prosthetically reconstruct the defect, the weight of the obturator should be reduced as much as possible to minimize dropout because of gravity, and the bulb of the obturator should be properly extended into the defect to get additional retention and stability. In this case of a partially edentulous patient who underwent additional maxillary resection because of tumor recurrence, a metal framework was designed by applying the basic design principles of removable partial dentures. An obturator with improved retention, stability, and support was fabricated through functional impressions. The patient was satisfied with the improved facial expression, mastication, swallowing, and pronunciation, and showed stable occlusion and oral hygiene management during the follow-up period.
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