Dudani Mohit T, Hindocha Amit D
Department of Prosthodontics, Sinhgad Dental College and Hospital, Pune, Maharashtra, India.
J Prosthodont. 2015 Jan;24(1):87-91. doi: 10.1111/jopr.12173. Epub 2014 Jun 17.
Patients having undergone hemi-mandibulectomy without further reconstruction (to restore the lost mandibular continuity) suffer functional limitations due to the resultant deviation of the segmental mandible. A palatally based guidance prosthesis (or palatal ramp prosthesis) is often indicated and is usually fabricated chairside in self-cured acrylic resin. Establishing the correct angulation of the slope of the palatal ramp may take several attempts before a satisfactory correction is achieved. This clinical report describes a laboratory technique in which a semi-adjustable articulator was used for fabricating the palatal ramp prosthesis. The patient's deviated mandibular position was transferred to the articulator by means of a facebow and interocclusal record. The angulation of the palatal ramp was then established on the semi-adjustable articulator and the prosthesis fabricated in heat-cured acrylic resin. Reduced chairside time, improved patient comfort levels, and ease in fabrication of the prosthesis on the semi-adjustable articulator are proposed advantages of the described technique.
接受了半侧下颌骨切除术且未进行进一步重建(以恢复缺失的下颌骨连续性)的患者,会因节段性下颌骨的移位而出现功能受限。通常需要使用腭部基托导向义齿(或腭部斜面导板义齿),且通常在椅旁用自凝丙烯酸树脂制作。在获得满意的矫正效果之前,可能需要多次尝试才能确定腭部斜面导板的正确倾斜角度。本临床报告描述了一种实验室技术,其中使用半可调式牙合架来制作腭部斜面导板义齿。通过面弓和牙合间记录将患者偏斜的下颌位置转移至牙合架。然后在半可调式牙合架上确定腭部斜面导板的倾斜角度,并使用热凝丙烯酸树脂制作义齿。所描述的技术具有减少椅旁操作时间、提高患者舒适度以及便于在半可调式牙合架上制作义齿等优点。