کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
3146407 | 1197258 | 2008 | 6 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Dentin tubule numerical density variations below the CEJ Dentin tubule numerical density variations below the CEJ](/preview/png/3146407.png)
AimTo evaluate dentin tubule numerical density variations below the CEJ.MethodologyThree human non-carious permanent canines were sectioned parallel to the CEJ to obtain dentin disks 1 mm thick whose surfaces were 1 mm and 2 mm below the CEJ. Each disk was sectioned into quarters resulting in four segment locations: facial, lingual, mesial, and distal. The outer (PDL side) and inner (pulp side) surfaces of the specimens were shaped to expose dentin with SiC papers and polished. Numerical tubule density was determined from SEM images. All data were statistically analyzed using a three-way ANOVA.ResultsThe dentin tubule density (number/mm2) ranged from 13,700 to 32,300. Dentin tubule density was relatively uniform at 1 mm and 2 mm below the CEJ and increased by a factor of about two from the outer to the inner surface, which was significantly different (P < 0.0001).ConclusionsThe tubule density variations at the cervical root did not present marked.
Journal: Journal of Dentistry - Volume 36, Issue 11, November 2008, Pages 953–958