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The purpose of this study was to evaluate clinically superplastic titanium alloy for maxillary complete denture. The subjects that were the 30 patients with upper edentulous ridges were selected from Tsurumi University Dental Hospital. 17 patients were maxillary and mandibular edentulous, the other patients were only maxillary edentulous. Each of metal base was made of 90 Ti-6 Al-4 V alloy by Sankin Dental Co.. The portion of a resin was used of PMMA resin with 4-META (4-methacryloxyethyl trimellitic anhydride). At the time of inserting the denture and one month after, the dentures were clinically observed about the retentive force and the adhesive condition on finish line. At the same time, the patients were examined oral mucose and inquired of the feeling relating to wear new denture. Furthermore each weight of new dentures was compared with each of old dentures. The results were as following: 1. The width and depth of the palate were measured previously on posterior palatal sealed area. The mean value of the depth was 8.8 +/- 1.8 mm and the mean value of the width was 44.9 +/- 2.7 mm. 2. The retentive force of new dentures was clinically adequate enough to achievement of function without two cases. 3. The adhesive condition on the finish line was adequate in all cases. 4. The mean weight value of the new denture was 20.1 +/- 3.9 g. 5. 2 of 30 patients were finded the slightly redness without pain on the middle palatal mucose. 6. The feelings of patients relating to wear were as following: 1) Lighter than old denture. 2) More extensive tongue space.(ABSTRACT TRUNCATED AT 250 WORDS)

The clinical evaluation of the metal-based denture using superplastic titanium alloy for upper edentulous patients.