Turkaslan Suha, Baykul Timucin, Aydin M Asim, Ozarslan M Mustafa
Department of Prosthodontics, Faculty of Dentistry, Süleyman Demirel University, Isparta, Turkey.
Eur J Dent. 2009 Jul;3(3):185-90.
The primary goal of prosthetic obturation is closure of the maxillectomy defect and separation of the oral cavity from the sinonasal cavities by use of different bulb designs. The aim of this study was to evaluate the articulation performance of obturator patients with three different buccal extension designs.
Five patients with palatal defects of comparable sizes at ages ranging from 42 to 74 were evaluated. Starting at postoperative 4 months, speech intelligibility (SI) was assessed without a prosthetic obturator and with an obturator of buccal extensions 15 mm (high), 10 mm (medium) and 5 mm (low), respectively. Assessments were performed at four week intervals for adaptation. The articulation performance of patients with different buccal extension designs were evaluated on speech intelligibility. The data tested using Friedman test.
The mean SI score without an obturator was 45.04%+/-5.86%. SI was found to be significantly increased with obturators of any buccal extensions with the mean values 90.50%, %94.24% and 91.20% for high, medium, and low buccal extensions respectively. When the SI score was compared between three buccal extension types medium was found to be significantly higher compared to others (P<.05).
Obturators improve speech intelligibility irrespective of their buccal extension levels. Nevertheless, medium size buccal extension enables the optimum sealing for better articulation.
修复性阻塞的主要目标是通过使用不同的球状物设计来封闭上颌骨切除缺损，并将口腔与鼻窦腔分隔开。本研究的目的是评估具有三种不同颊侧延伸设计的阻塞器患者的发音性能。
评估了5例年龄在42至74岁之间、腭部缺损大小相当的患者。从术后4个月开始，分别在不使用修复性阻塞器以及使用颊侧延伸为15毫米（高）、10毫米（中）和5毫米（低）的阻塞器的情况下评估语音清晰度（SI）。为适应过程，每隔四周进行一次评估。根据语音清晰度评估不同颊侧延伸设计患者的发音性能。数据采用Friedman检验。
不使用阻塞器时的平均SI评分为45.04%±5.86%。发现使用任何颊侧延伸的阻塞器时SI均显著提高，高、中、低颊侧延伸的平均值分别为90.50%、94.24%和91.20%。比较三种颊侧延伸类型之间的SI评分时，发现中等颊侧延伸的评分显著高于其他类型（P<0.05）。
阻塞器无论其颊侧延伸水平如何，均可提高语音清晰度。然而，中等大小的颊侧延伸能够实现最佳密封，以获得更好的发音效果。
