Ali Islam E, Otomaru Takafumi, Sumita Yuka
Department of Maxillofacial Prosthetics, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU), Tokyo, Japan.
Department of Prosthodontics, Faculty of Dentistry, Mansoura University, Mansoura, Egypt.
J Prosthodont Res. 2023 Jan 6;67(1):157-160. doi: 10.2186/jpr.JPR_D_21_00126. Epub 2022 Feb 19.
We aimed to introduce a simple method for refabrication of an implant-retained obturator using the denture duplication technique while retaining the custom abutments for a patient who underwent bilateral maxillectomy and reconstruction with a free fibula osteocutaneous flap. We have proposed this technique to facilitate the impression-making procedure for this extensive maxillary defect and to avoid lengthy and complicated laboratory procedures.
A custom tray was developed by duplicating the fitting surface of an old obturator using silicone putty. The tray was used for a bite-pressure impression wherein both definitive impression and jaw relation were obtained simultaneously, reducing the time required for the placement of a new obturator.
We used the denture duplication technique to refabricate an implant-retained obturator while retaining the custom abutments. Decreased chairside time, fewer visits, the use of easily available materials, and uncomplicated laboratory procedures make this technique more economical and acceptable for patients. Using this approach, the patient was able to use the old prosthesis until the delivery of the new prosthesis. The replacement obturator that was developed using this method maintained an acceptable level of oral function.
我们旨在介绍一种简单的方法，即使用义齿复制技术重新制作种植体固位的闭孔器，同时为接受双侧上颌骨切除术并用游离腓骨骨皮瓣重建的患者保留定制基台。我们提出了这种技术，以方便对这种广泛的上颌骨缺损进行印模制作，并避免冗长而复杂的实验室程序。
通过用硅酮油灰复制旧闭孔器的贴合面来制作定制托盘。该托盘用于咬合压力印模，可同时获得最终印模和颌关系，减少了放置新闭孔器所需的时间。
我们使用义齿复制技术重新制作种植体固位的闭孔器，同时保留定制基台。减少了椅旁时间、就诊次数，使用了容易获得的材料，并且实验室程序简单，使该技术对患者来说更经济且可接受。采用这种方法，患者能够在新义齿交付之前一直使用旧义齿。使用这种方法制作的替换闭孔器维持了可接受的口腔功能水平。
