An approach to normalizing micro-CT depth profiles of mineral density for monitoring enamel remineralization progress

作者：Nakata Keiko; Nikaido Toru; Nakashima Syozi^*; Nango Nobuhito; Tagami Junji

来源：Dental Materials Journal, 2012, 31(4): 533-540.

DOI：10.4012/dmj.2011-228

• Micro-CT
• Normalization
• Remineralization
• Mineral density at different depths

To indicate the possibility of a new approach to creating mineral density profiles, and to examine longitudinal changes in %26apos;the rate of remineralization (R-A)%26apos; and %26apos;the mineral density (D(A)s) at 4 different depths%26apos; (surface zone: SZ, lesion body: LB, middle zone: MZ, deep zone near to sound area: DZ) in enamel subsurface lesions, eight demineralized bovine enamel-dentin blocks were remineralized for 1 to 4 week and investigated using Micro-focus X-ray CT (micro-CT). After CT scanning, mineral density profiles were created. Mineral densities at each depth after demineralization were SZ=LB%26lt;MZ%26lt;DZ. Increase in RA was the greatest in the first week of remineralization and it decreased over time. Increments of the mineral density were greater in the order of SZ=LB%26gt;MZ%26gt;DZ. This study indicated a new approach to create a mineral density profile and suggested the greater the value of the mineral density before the remineralization, the smaller the mineral density increments.

• 出版日期2012-7