Davis J W, Lazarus C, Logemann J, Hurst P S
J Prosthet Dent. 1987 Jun;57(6):715-9. doi: 10.1016/0022-3913(87)90370-2.
Swallowing was found to be substantially improved with the prosthesis. Less aspiration, less time necessary to complete the swallow, and greater variation in food consistency tolerated were all positive results of the prosthesis. In addition, videofluoroscopic studies of tongue movements during speech revealed that tip-alveolar /t-d/ and back-velar /k-g/ productions were more normal with the prosthesis. With the prosthesis, the understandibility of /t/ and /d/ was improved 20% and that of /k/ and /g/, 33%. It is clear that compromises must be effected in prosthesis design to facilitate improvement in both speech and swallowing. A large prosthetic mass in the oral cavity can also negatively change speech resonance. These issues are being investigated, as are acoustic and perceptual studies of speech articulation. Future research should address whether a combination of maxillary and mandibular prostheses would result in better speech and swallowing function. A mandibular prosthesis could replace missing teeth and alveolar contour that might influence speech and swallowing. A mandibular prosthesis might also allow construction of a smaller maxillary glossectomy prosthesis to interact with the mandibular prosthesis.
研究发现，使用该假体后吞咽功能有显著改善。误吸减少、完成吞咽所需时间缩短以及可耐受的食物稠度变化更大，这些都是该假体带来的积极效果。此外，对言语过程中舌头运动的视频荧光透视研究表明，佩戴假体时舌尖-齿龈音/t-d/和舌根-软腭音/k-g/的发音更接近正常。佩戴假体后，/t/和/d/的可懂度提高了20%，/k/和/g/的可懂度提高了33%。显然，在假体设计中必须做出妥协，以促进言语和吞咽功能的改善。口腔内较大的假体质量也会对言语共鸣产生负面影响。目前正在对这些问题以及言语清晰度的声学和感知研究进行调查。未来的研究应探讨上颌和下颌假体联合使用是否会带来更好的言语和吞咽功能。下颌假体可以替代可能影响言语和吞咽的缺失牙齿和牙槽轮廓。下颌假体还可能允许制作更小的上颌舌切除术假体，以便与下颌假体相互作用。
