Shinsuke Sadamori, Shinsuke
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A comparison of three dimensional change in maxillary complete dentures between conventional heat polymerizing and microwave polymerizing techniques Sadamori, Shinsuke; Ishii, Toshiya; Hamada, Taizo; Razak, Arifzan
Dental Journal (Majalah Kedokteran Gigi) Vol 40, No 1 (2007): (March 2007)
Publisher : Faculty of Dental Medicine, Universitas Airlangga

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20473/j.djmkg.v40.i1.p6-10

Abstract

The purpose of this study was to measure and compare two different polymerizing processes, heat polymerizing (HP) and microwave polymerizing (MP), on the three dimensional changes in the fitting surface and artificial teeth of maxillary complete dentures. A threedimensional coordinate measurement system was used to record distortion of the specimens. The distortion of the fitting surface was measured from the reference plane on the fitting side from which a coordinate system was set, and the movement of the artificial teeth and the distortion of the polished surface was measured from the reference plane of the artificial tooth side, from which a coordinate system was set. It was clearly showed that various distortions of denture specimens after polymerization process can be measured with this three-coordinate measuring machine. The study showed that the overall distortion of the fitting surface in HP specimens was shown to be larger than in MP ones.
Three dimensional changes in maxillary complete dentures immersed in water for seven days after polymerization Sadamori, Shinsuke; Ishii, Toshiya; Hamada, Taizo; Razak, Arifzan
Dental Journal (Majalah Kedokteran Gigi) Vol 41, No 1 (2008): (March 2008)
Publisher : Faculty of Dental Medicine, Universitas Airlangga

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20473/j.djmkg.v41.i1.p1-4

Abstract

The purpose of this study was to investigate the three dimensional changes in the fitting surface and artificial teeth of maxillary complete dentures which were fabricated using two different polymerizing processes: heat polymerization (HP) and microwave polymerization (MP), after immersion in water for seven days. The amount of distortion in the molar region of the alveolar ridge was significantly different between HP and MP. However, the overall distortion of the dentures polymerized using both methods was similar. The distortion due to immersion in water for seven days compensated for the polymerization distortion, but the amount of distortion was very slight.
Comparison of recognition about denture adhesive between Japanese and Indonesian dentists: A pilot study Sadamori, Shinsuke; Hamada, Taizo; Hong, Guang; Nakai, Nakai; Kawamura, Makoto; Razak, Arifzan
Dental Journal (Majalah Kedokteran Gigi) Vol 38, No 4 (2005): (December 2005)
Publisher : Faculty of Dental Medicine, Universitas Airlangga

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20473/j.djmkg.v38.i4.p189-193

Abstract

The purpose of this study was to compare cross-national differences of the recognition of denture adhesive among dentists. The design of the research was cross-cultural differences. The research was done in Japan and Indonesia. One hundred and ten dentists from Japan and Indonesia were surveyed using a questionnaire regarding knowledge/comprehension of denture adhesive (in Japanese and Indonesian versions respectively). Logistic regression model (forward stepwise method) showed that it was possible to distinguish Japanese dentists from Indonesian peers with a probability of 96.0 per cent by using 4 items out of 16. For the question of "How many domestic products of denture adhesive (DA) do you know?" approximately a half of the Japanese dentists answered "less than 3", whereas 93 per cent of Indonesian subjects answered "nothing". It was concluded that there were much differences in dentists understanding and experience of denture adhesive in the clinic, between Japan and Indonesia.
Is it possible to distinguish the understanding of denture adhesive between Japanese dental students and Indonesian peers by a questionnaire? Sadamori, Shinsuke; Hamada, Taizo; Hong, Guang; Kawamura, Makoto; Nakai, Nobuyuki; Razak, Arifzan
Dental Journal (Majalah Kedokteran Gigi) Vol 39, No 3 (2006): (September 2006)
Publisher : Faculty of Dental Medicine, Universitas Airlangga

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20473/j.djmkg.v39.i3.p89-92

Abstract

The purpose of this study was to compare cross-national differences in the recognition of denture adhesive between dental students. The design of the research was cross-cultural differences. The research was done in Japan and Indonesia. Seventy-seven dental students from Japan and Indonesia were surveyed using a questionnaire regarding knowledge/comprehension of denture adhesive (in Japanese and Indonesian versions respectively). Logistic regression using the Wald method showed that it was possible to distinguish Japanese dental students from Indonesian peers with a probability of 96.1 per cent by using 3 items out of 12. For the question of “How many domestic products denture adhesive do you know?” 85 per cent of the Japanese dentists answered “less than 3”, whereas 10 percent of Indonesian subjects did so. It was concluded that there were big differences between Japanese and Indonesian dental students’ understanding and experience of denture adhesive.