Biomedical subjects
Publications and source records attributed to T R Saunders.
This study evaluated the effectiveness of three different disinfectant solutions against denture bioburden absorbed within the depth of acrylic resin. Specimens were taken from dentures that had been worn by the patients for 15 to 20 years and were scheduled for replacement.
This study demonstrated that bacteria penetrate three kinds of dental acrylic resin after a short time period. Samples of acrylic resin were contaminated with a variety of bacteria and were then placed in three different disinfecting solutions as directed by the manufacturers. After the specific dilution and immersion time, cultures were made from the resin samples. The only effective disinfectant was a 0.525% solution of sodium hypochlorite at a 10-minute immersion. It disinfected not only the surfaces but also the bacteria that penetrated the surfaces to a depth of 3 mm.
A procedure is described that uses thermoplastic synthetic casting tape for fabrication of facial impression trays. Once used, these trays can be disinfected without degradation of the tray material, which allows for storage and later use.
Poliomyelitis can affect patients with severe hypoxia and hypercapnia. Historically, most of these patients were supported by mechanical ventilation via tracheostomy. However, this procedure can lead to serious complications. Subsequently, non-invasive alternative procedures have been introduced that provide mechanical respiratory support; these include negative pressure ventilators and positive pressure ventilation via a nasal, oral, and oronasal interface. Although these ventilators are effective, various limitations have been noted. The strapless oronasal interface positive pressure ventilator appears to have the fewest limitations, and through the use of advanced dental techniques and improved dental materials, this ventilator is easily fabricated and has been noted by patients to be more comfortable.
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The procedure described uses cast metal bars in the master cast to ensure cast strength and accuracy in processing, rebasing, relining, or repairing bar-supported removable prostheses. This method has been found to be an easy way to ensure accurate processing reliability.
A procedure has been described that can improve speech deficiencies associated with anterior maxillary implant-supported prostheses. The speech-aid prosthesis has been found to be safe, effective, and cost-efficient.
A procedure is described for use of a cast metal cover cap to protect implant prosthesis attachments during finishing and polishing. The cap helps prevent distortion or damage to the implant.
A modified curing technique that will extend the useful clinic life of temporary soft liners has been described. This technique offers the following distinct advantages over the traditional method of intraoral curing: (1) a liner that is less porous; (2) a liner that maintains its resilience intraorally for extended periods; (3) a liner that exhibits minimal discoloration over time; (4) increased density that allows adjustments to be made when necessary; and (5) minimized separation from the acrylic resin denture base.
A modified procedure for using breathing tubes during nasal moulage has been described. This method offers several advantages over traditional techniques, namely, reduction of alar distortion, greater detail of the internal nares and columella, and increased support to the nares while under the weight of the moulage.
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Explore the source record for details and available documents.
A modified procedure that aids in the fabrication of a nasal prosthesis has been described. This method offers several distinct advantages over traditional techniques. These are (1) use of the silicone putty impression material reduces sculpturing time, (2) the tinted wax allows improved patient acceptance of the wax model at the try-on, and (3) use of conditioning material at the try-on improves marginal adaptation.
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Explore the source record for details and available documents.
Explore the source record for details and available documents.
If intracavitary implantation is the most desirable treatment modality for nasopharyngeal carcinoma, then the use of the polysulfide rubber as a intracavitary implant is the preferred method. This technique is currently used at various patient treatment centers. Given sufficient time and significant patient numbers, this method of intracavitary implantation will prove to be the most convenient treatment modality.
Prior to the development of these two rehabilitation programs, there was no informational material available for patients having undergone debilitative maxillary or mandibular surgery. Realizing that what little information the patients and their families did receive during the rehabilitative process was often fragmented, misunderstood, or simply forgotten, two audiovisual programs were designed to fulfill a long-neglected need. Experience with this project indicates that if patient rehabilitation programs are to be effective, it is essential that the patients contribute to the program's development. Only in this way can members of the health-care team be assured that the transmission of pertinent information through variatious educational materials is totally effective.