Effects of a low calcium maternal and weaning diet on the thickness and microhardness of rat incisor enamel and dentine

Lozupone, E; Favia, A

doi:10.1016/0003-9969(89)90085-x

Cited by 25 publications

(14 citation statements)

References 14 publications

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“…This is not the case with E l enamel, because its degree of von Kossa staining (low) was compared to that (high) of the closely adjacent dentin in the same section. However, the low degree of calcification of E l enamel is in agreement with the reduction of its microhardness (not variable with section thickness) reported by Lozupone an Favia (1989) and found by the same authors in the maturation zone of the incisors of the section; (b) section decalcified by flotation on formic acid and stained with uranyl acetate and lead citrate (PEDS method). Note the similarity between untreated enamel (a) and the decalcified organic matrix of the same zone (b).…”

Section: Discussionsupporting

confidence: 87%

“…On the contrary, the experimental evidence shows that thickness and degree of mineralization of enamel of adult rats fed a low calcium diet are the same as those of the controls (Ferguson and Hartles, 1966). However, only reduction of enamel thickness and not of enamel micro-hardness is demonstratable a t the end of the lactating period in pone and Favia, 1989). It seems that reduction of enamel calcification occurs only when the effect of lactation by mothers on a low calcium diet is combined with the effect of low calcium weaning.…”

Section: Discussionmentioning

confidence: 91%

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Morphological studies of hypomineralized enamel of rat pups on calcium‐deficient diet, and of its changes after return to normal diet

Bonucci¹,

Lozupone²,

Silvestrini³

et al. 1994

Anat. Rec.

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The results lead to the conclusions that: (1) E1 enamel is hypomineralized, and its degree of calcification is restored by return to a normal calcium diet; (2) intra- and interprismatic calcification occurs in a different way; (3) crystallite thickness is initially greater in dentinal than in the superficial zone and is reversed as crystallite growth is completed; and (4) loss of enamel proteins is necessary for completion of crystallite growth and not for crystallite formation.

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Section: Discussionsupporting

confidence: 87%

Section: Discussionmentioning

confidence: 91%

Morphological studies of hypomineralized enamel of rat pups on calcium‐deficient diet, and of its changes after return to normal diet

Bonucci¹,

Lozupone²,

Silvestrini³

et al. 1994

Anat. Rec.

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show abstract

“…Vitamin A, zinc (Zn), and calcium (Ca) deficiencies have been studied, employing the rat as the experimental model [10][11][12][13][14][15]. Other minerals present in the diet such as boron (B) have received less attention [16].…”

Section: Introductionmentioning

confidence: 99%

Histomorphometric and Microchemical Characterization of Maturing Dental Enamel in Rats Fed a Boron-Deficient Diet

Durand¹,

Mesones²,

Nielsen³

et al. 2009

Biol Trace Elem Res

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Few reports are available in the literature on enamel formation under nutritional deficiencies. Thus, we performed a study to determine the effects of boron (B) deficiency on the maturing dental enamel, employing the rat continuously erupting incisor as the experimental model. Male Wistar rats, 21 days old, were used throughout. They were divided into two groups, each containing ten animals: +B (adequate; 3-mg B/kg diet) and -B (boron deficient; 0.07-mg B/kg diet). The animals were maintained on their respective diets for 14 days and then euthanized. The mandibles were resected, fixed, and processed for embedding in paraffin and/or methyl methacrylate. Oriented histological sections of the continuously erupting incisor were obtained at the level of the mesial root of the first molar, allowing access to the maturation zone of the developing enamel. Dietary treatment did not affect food intake and body weight. Histomorphometric evaluation using undecalcified sections showed a reduction in enamel thickness (hypoplasia), whereas microchemical characterization by energy-dispersive X-ray spectrometry did not reveal alterations in enamel mineralization.

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“…However, the relationship between diet, morbidity and generalized stress, and the reduction of phenotypic structures is well established from experimental models, studies of secular trends, and clinical data on tooth growth disturbance. In dietary terms, experimental models on rodents suggest high sugar and carbohydrate consumption and diminished calcium consumption can reduce adult tooth size, whereas high fat and protein consumption is associated with increased dental size (Holloway et al, 1961;Lozupone and Favia, 1989;Nakano et al, 1992). Maternal .…”

Section: Age-specific Tooth Size Differencesmentioning

confidence: 99%

Biological structure and health implications from tooth size at Mission San Luis de Apalachee

Stojanowski

Larsen

Tung

et al. 2006

American J Phys Anthropol

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This study analyzes dental metric variation to examine the biological structure of the native population at Mission San Luis de Apalachee, a late 17th century mission located in the Apalachee Province of Spanish colonial Florida. Three topics are addressed: (1) comparison of tooth sizes among adult and subadults, (2) analysis of the bio-spatial structure of skeletons within the church area, and (3) comparison of phenotypic profiles of individuals interred within coffins in the ritual nucleus of the church: the altar region. Analyses indicate that subadults had smaller average tooth sizes than adults for the posterior dentition that was particularly evident in mandibular nonpolar molars and premolars. This disparity, also documented in two other mission populations, likely represents ontogenetic stress and resulting increased mortality among those most at risk for early death. Analysis of the spatial structure of graves failed to document biological structuring by side of the aisle or by burial row, although some gross differences were evident when front, middle, and rear church burials were compared. Individuals buried in coffins within the same row were phenotypically similar to one another. However, inter-row comparisons indicated lack of phenotypic similarity among all coffin interments. These analyses suggest maintenance of kin-structured burial for elites alone within the San Luis community.

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Effects of a low calcium maternal and weaning diet on the thickness and microhardness of rat incisor enamel and dentine

Cited by 25 publications

References 14 publications

Morphological studies of hypomineralized enamel of rat pups on calcium‐deficient diet, and of its changes after return to normal diet

Morphological studies of hypomineralized enamel of rat pups on calcium‐deficient diet, and of its changes after return to normal diet

Histomorphometric and Microchemical Characterization of Maturing Dental Enamel in Rats Fed a Boron-Deficient Diet

Biological structure and health implications from tooth size at Mission San Luis de Apalachee

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