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. 2021 Oct;16(4):1296-1298.
doi: 10.1016/j.jds.2021.06.009. Epub 2021 Jul 1.

Study of amalgam-like particles by polarized light microscopy

Ying-Tai Jin  1   2 , Ming-Jay Hwang  3   4 , Yi-Pang Lee  3 , Chun-Pin Chiang  3   4   5
Affiliations

Study of amalgam-like particles by polarized light microscopy

Ying-Tai Jin et al. J Dent Sci. 2021 Oct.
No abstract available

Keywords: Amalgam particle; Energy dispersive X-ray analysis; Polarized light microscopy.

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Conflict of interest statement

The authors have no conflicts of interest relevant to this article.

Figures

Figure 1
Figure 1
Hematoxylin and eosin-stained histological sections studied by conventional (white light) and polarized light microscopy. (A) Medium-power microphotograph exhibiting a periapical scar composed of dense fibrous connective tissue with depositions of both large and small black amalgam particles. (B) By polarized light microscopy, only few small areas of large black amalgam particles showed birefringence (empty black-boarded arrow), but diffuse small birefringent dots were discovered in aggregates of small amalgam particles (solid black arrows). In addition, the collagen bundles in the periapical scar also exhibited thin band or fiber-like birefringence with marked cross striations. (C and D) Medium-power microphotographs of two periapical granulomas showing that each was composed of a well-vascularized fibrous connective tissue with a severe lymphoplasma cell infiltrate and foci of hemorrhage. Moreover, a few small and medium-sized amalgam particles were noted in the cytoplasm of multinuclear giant cells or free in the fibrous connective tissue stroma. (E and F) By polarized light microscopy, the amalgam-like particles in both periapical granulomas were shown as a few small or medium-sized birefringent dots. (Hematoxylin and eosin stain; original magnification; A, B, C, D, E, and F, 10 ×).
See this image and copyright information in PMC

References

    1. Lee Y.P., Hwang M.J., Wu Y.C., Lang M.J., Wu Y.H., Chiang C.P. Clinicopathological study of periapical scars. J Dent Sci. 2021;16:1140–1145. - PMC - PubMed
    1. Hwang M.J., Lee Y.P., Lang M.J., Wu Y.H., Chiang C.P., Chueh L.H. Clinicopathological study of radicular cysts with actinomycosis. J Dent Sci. 2021;16:825–830. - PMC - PubMed
    1. Huang H.K., Hwang M.J., Chiang C.P., Chueh L.H. Periapical granuloma with actinomycosis. J Dent Sci. 2021;16:1044–1046. - PMC - PubMed
    1. Koppang H.S., Koppang R., Stolen S.O. Identification of common foreign material in postendodontic granulomas and cysts. J Dent Assoc S Afr. 1992;47:210–216. - PubMed
    1. Koppang H.S., Roushan A., Srafilzadeh A., Stolen S.O., Koppang R. Foreign body gingival lesions: distribution, morphology, identification by X-ray energy dispersive analysis and possible origin of foreign material. J Oral Pathol Med. 2007;36:161–172. - PubMed

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