Search PubMed⌕ Search

Biomedical subjects

H Ishigami

Publications and source records attributed to H Ishigami.

At least 37 records · Page 2Linked to original sources
PubMed1990

Acoustic analysis of experimental prosthetic apparatus on spatial distribution formants.

This study concerns the effects of various prosthetic apparatus on speech perception. In this study we analyzed not only the first and second formant frequencies (as have often been studied previously) but also the third formant frequencies, and the three formant frequencies en masse. Our study demonstrated that of the six kinds of prosthetic apparatus we examined, the least effective apparatus was the L.S. type, while the most effective was the M.P. type.

Adult↗
PubMed1990

[Observation of occlusal force in prosthetic crown cementings].

The method of pressure force in crown cementing was examined. Continuous occlusal force was always supported by the patients' personal occlusal force in cementing crowns. We found that continuous occlusal force continuously decreased as the occlusal force increased, and the decreasing morphologies were classified into four types, 'Rapid decrease', 'Step-wise decrease', 'Intermediate decrease' and 'Gradual decrease'.

Bite Force↗
PubMed1989

[Performance of various prepared abutment forms. Posterior fixed bridge abutment].

The clinical techniques of the students were examined by analyzing the results of some measurements on the side wall inclination as a width and height of the full formed abutment of posterior fixed bridge, and the results of full covered crown data were compared. Significant differences in the inclination degree to the axis between upper and lower were not noticed in either premolars or molars on the mesio-distal side wall and bucco-lingual side wall, and were noticed between premolars and molars of the same jaw on both side walls. Margin diameter and height of diameter of the premolars showed a closer rank correlation than molars in mesio-distal side wall, but in bucco-lingual side wall, molars showed a closer rank correlation than premolars.

Bicuspid↗
PubMed1989

[Principal component analysis of the masticatory motion path during gum chewing].

This study examined the characteristics of masticatory motion path using multivariate analysis. Principal component analysis was selected as the method and various important results were revealed as follows; Approximately 70% of the information describing gum chewing motion was explained by three principal components. From factor loading, the first principal component explains back and forth movement from the end of the opening phase to the closed position, the second principal component explains left to right movement at the onset of the mouth opening phase, and the third principal component explains left and right movement at about the position of maximum opening. Using scatter diagrams combining the first and second principal components, as well as the first and third principal components, we were able to recognize delicate differents among the subjects, but to the different strokes of any subject, characteristic patterns were emerged.

Chewing Gum↗