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Biomedical subjects

T Tabata

Publications and source records attributed to T Tabata.

At least 343 records · Page 19Linked to original sources
PubMed1979

Biocompatibility of apatite ceramics in mandibles.

Apatite ceramics composed of synthetic hydroxyapatite, Ca10(PO4)6(OH)2 were implanted in mandibles of adults dogs. The histological observations indicated that the apatite ceramic was closely contacted with newly formed bone tissue without any rejection phenomenon up to 2 weeks. An electron micrograph of non-decalcified ultra-thin section at 8 weeks showed that the apatite ceramic was directly bonded to newly formed bone and the mineralized bone tissue was grown into the micro pores of the ceramics independent on the pore size. It seemed that the outer surface of the apatite was exchanged by bone tissue. From these results it was considered that the apatite ceramic was a successful implant material in dental and surgical fields.

Animals↗
PubMed1978

A biomathematical study on implant design and stress distribution.

Three types of implant were simulated by the two-dimensional finite element method using the mechanical properties of human mandible and implant material as input data. Type 1 was a blade implant, type 2 was blade implant with subperiosteal wings in buccolingual direction, and type 3 was subperiosteal implant with no blade. The effect of bucco-lingual subperiosteal wings in decreasing the stress concentration around the neck portion of the blade implant was investigated under three kinds of occlusal force. In conclusion, the greatest stress concentration was observed at the cortical bone around the neck portion of T-1 blade implant. It was effective in decreasing the stress concentration at this neck portion to change the implant design from T-1 to T-2 or T-3.

Blade Implantation↗
PubMed1976

Localization of E and EAC binding lymphocytes in human tonsils.

The localization of T and B lymphocytes in frozen sections of human tonsils was determined using E and EAC binding techniques. It was revealed that there were thymus-dependent areas with E binding lymphocytes in peri- and interfollicular zones. EAC binding lymphocytes were found mainly in the follicles. This suggests that B cells are produced in germinal centres. The present experiment confirmed that human tonsils contain two different kinds of lymphocytes demonstrating selective localizations in the tissues as similar to the lymph nodes.

Adolescent↗