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From
Histomorphometric and Histological Evaluations of the Flaxseeds Effect on Dentin Formation in Offsprings' Teeth of Diabetic and Non-Diabetic Pregnant Rats
Nancy Mamdouh Saad, Nawal A. El Masri, Fathy Ibrahim Shehata, Sahar Shafik, Mounir Mahmoud El Adawy
International Journal of Dental Sciences and Research
.
2014
, 2(6C), 1-7 doi:10.12691/ijdsr-2-6C-1
Figure
1
.
The tooth germ of lower first molar of albino rat at birth was at the beginning of late bell stage. Thin layer of dentin matrix appeared deposited at the cusps of (control, BD) group. Dentin matrix at the middle cusp showed greater extension along its slops. The odontoblasts were well differentiated with proximally situated nuclie and extended along the slops of all cusps. The inner enamel epithelium (IEE) appeared as continues layer of well differentiated tall columnar cells. The stellate reticulum appeared as star shaped cells few layer of flattened cells intervened between the inner enamel epithelium and stellate reticulum cells constituting the stratum intermedium. The dental papilla seamed of moderate vascularity as showed by thin wall blood vessels adjacent to the differentiating odontobalst cell layer. (H&Ex40)
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Figure
2
.
A marked degree of morphodifferantion of the mandibular first molars were evident, no histological evidence for the development of third molars were noticed. Increased thickness of dentin formation could be easily traced along the cusps slopes forming a continuous band of calcified tissue. The adjacent odontoblasts appeared normal, well organized and exhibited normal basal polarity of their nuclei. The inner enamel epithelium exhibited normal apical nuclei. (H&Ex40)
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Figure
3
.
The histodifferatiation of the mandibular molars were not comparable to that seen in the previous groups. The inner enamel epithelium exhibited distinguished appearance. An obvious areas of discontinuation of odontoblasts alignment and areas with failed odontoblasts differentiation. Showed irregular and very limited thickness of formed dentin matrix with poor differentiation of the odontoblast cells. The odontoblasts appear disorganized, ill differentiated and poorly arranged in homogenous row. Decreased vascularity in the dental follicle and dental papilla than the previous groups were also observed. The odontoblast cells were poorly differentiated with only a small area of dentin matrix formation at the mesial cusp. (H&Ex40)
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Figure
4
.
Advanced degree of morphodifferentiation of mandibular first molar was noticed.A thin layer of dentin matrix was formed that was continuous on all cusp slops. The adjacent odontoblastcells appeared normally aligned. (H&Ex40)
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Comparison between dentin thicknesses in the different studied groups at birth
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