歯根尖部治療に応用された骨補填材ハイドロキシアパタイトのSEM観察

概要

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Two kinds of hydroxyapatite fillings which had been used to fill up the deficiencies during apicotomy a few years earlier, were taken out from patients with a curettage of the periapical lesion. These two kinds of hydroxyapatite were observed through SEM. The surfaces of the two kinds of hydroxyapatite fillings (i.e, Apaseram G and Bonetite) taken out of the root apical focus were covered with a thin layer of substances. On the surfaces of Apaseram G, many thicker-grown crystals and bone like substances of various sizes were observed on the thin layer of substance. Though crater-like depressions were seen on a part of the surface as well as collapses at the joint of crystals. On the surface of Bonetite, there were a number of cubic and formless crystals. The surface of joint crystals of Bonetite was partly destroyed and had become rough. Calcification and collapse, clinically good prognosis and bad respectively, were recognized for both kinds of hydroxyapatite used for periapical treatment. This may be due to the fact that the hydroxyapatite fillings were taken out of re-treated foci.
福岡歯科大学学会の論文
1991-06-30