Distribution of fluoride in the enamel of rat incisors examined by an abrasive microsampling technique

Kato, Kazúo; Nakagaki, Haruo; Sakakibara, Yukitaro; Kameyama, Yôichiro; Weatherell, J.A.; Robinson, C.

doi:10.1016/0003-9969(88)90119-7

Cited by 8 publications

(2 citation statements)

References 17 publications

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“…Fluoride profiles have been described previously in human dental tissues , in rat enamel [Kato et al, 1988] and rat bone [Narita et al, 1989], The present results provide analogous detailed information about fluoride distribution in rat cemen tum, dentine and bone.…”

Section: Discussionsupporting

confidence: 69%

“…Previous reports of flu oride concentration in enamel [Kato et al, 1988] and bone [Narita et al, 1989] of rats under the same exper imental conditions indicated that the fluoride concen tration in the surface of cementum was approximately twice that of bone and 4-5 times that of enamel. It would appear that, as in human dental tissues, the av erage concentration of fluoride in the rat was highest in cementum and decreased, in descending order, in dentine and enamel .…”

Section: Discussionmentioning

confidence: 93%

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Distribution of Fluoride across Cementum, Dentine and Alveolar Bone in Rats

et al. 1990

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This study was undertaken to determine the fluoride distribution in cementum and neighboring hard tissues of the rat after different levels of fluoride administration via the drinking water. Specimens of cementum with underlying dentine and adjacent bone were removed from the distal roots of the first lower molars. The fluoride distribution in each specimen was determined in samples removed sequentially using an abrasive microsampling technique. Fluoride concentrations were highest at or near the surface and decreased towards the interior of cementum, dentine and alveolar bone in both control and experimental groups. With increasing fluoride intake, concentrations increased throughout the tissue. The distribution patterns of fluoride in cementum of contralateral teeth from the same animal were similar. Fluoride concentrations in cementum were higher than those of dentine and alveolar bone.

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Section: Discussionsupporting

confidence: 69%

Section: Discussionmentioning

confidence: 93%

Distribution of Fluoride across Cementum, Dentine and Alveolar Bone in Rats

et al. 1990

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Distribution of fluoride concentration in the rat's bone

et al. 1990

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The present study was undertaken to determine the fluoride distribution profile in the rat femur. Male Wistar rats were divided into four groups and given water containing 0, 25, 50, and 100 ppm of fluoride, respectively, for 10 weeks. The fluoride distribution from the periosteum to the endosteum was determined in each specimen after sampling using the abrasive microsampling technique. In the outer circumferential lamellae, the concentration of fluoride was relatively high in the periosteal layer and then decreased gradually towards its interior. In the haversian and interstitial lamellae, it was lower and roughly constant through the tissue. In the inner circumferential lamellae, it rose again to reach the highest level towards the endosteal surface. Fluoride concentration throughout the cortex increased significantly with increasing intake of fluoride. These increases were especially marked at periosteal and endosteal surfaces.

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