PMID: 15348266Sep 7, 2004Paper

Local mechanical and optical properties of normal and transparent root dentin

Journal of Materials Science. Materials in Medicine
M BaloochS J Marshall

Abstract

The mechanical and optical properties of healthy and transparent root dentin are compared using atomic force microscopy (AFM), micro-Raman and emission spectroscopies and fluorescence microscopy. The elastic modulus and hardness of intertubular and peritubular transparent and healthy dentin did not differ appreciably. The tubule filling material in the transparent zone, however, exhibited values between peritubular and intertubular dentin. Raman spectroscopy revealed a shift in the 1066 cm(-1) band to 1072 cm(-1) from normal to transparent intertubular dentin. The material filling the tubule lumen in transparent dentin showed an increase in frequency of the band near 1070 cm(-1) as well. The emission spectral characteristics under 351 nm photoexcitation indicate differences between normal and transparent intertubular dentin. A transition region of about 300 microm between normal and transparent dentin was identified. In this region the intertubular emission properties were the same as for normal dentin, but tubules were filled. The filling material had emission characteristics closer to the normal intertubular than to transparent intertubular dentin.

Citations

Mar 19, 2016·International Journal of Biomaterials·Peter PanfilovLarissa P Kiselnikova
Jul 2, 2003·Journal of Biomedical Materials Research. Part a·R K NallaR O Ritchie
Jan 11, 2003·Journal of Biomedical Materials Research. Part a·R R GallagherS J Marshall
Dec 16, 2003·Journal of Bone and Mineral Research : the Official Journal of the American Society for Bone and Mineral Research·Nancy E LaneThomas J Wronski
Dec 29, 2007·Journal of Biomedical Materials Research. Part B, Applied Biomaterials·Annalisa MazzoniLorenzo Breschi
Jul 22, 2014·American Journal of Physical Anthropology·Nancy TangSimon Hillson
Aug 11, 2009·Dental Materials Journal·Toshiko InoueTakashi Miyazaki
Oct 21, 2003·Journal of Biomedical Materials Research. Part a·R K NallaR O Ritchie
Jul 2, 2003·Journal of Biomedical Materials Research. Part a·V ImbeniR O Ritchie
Sep 28, 2006·Journal of Bone and Mineral Research : the Official Journal of the American Society for Bone and Mineral Research·Joel W AgerRobert O Ritchie
Sep 23, 2020·Dental Materials : Official Publication of the Academy of Dental Materials·W YanD Arola
Dec 13, 2005·Biomaterials·Devendra BajajD Arola

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