Sex and ethnic differences in bone architecture

Nelson, Dorothy A.; Megyesi, Mary S.

doi:10.1007/s11914-004-0006-2

Cited by 20 publications

(9 citation statements)

References 37 publications

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“…fracture are well known and may be attributable to many factors such as bone structure, genotype or lifestyle (Nelson and Megyesi, 2004;Lei et al, 2006). Other epidemiological data provide some weak evidence that fracture incidence was related to higher protein intake.…”

Section: ~20-40 1 Weekmentioning

confidence: 99%

Protein intake, calcium balance and health consequences

et al. 2011

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High-protein (HP) diets exert a hypercalciuric effect at constant levels of calcium intake, even though the effect may depend on the nature of the dietary protein. Lower urinary pH is also consistently observed for subjects consuming HP diets. The combination of these two effects was suspected to be associated with a dietary environment favorable for demineralization of the skeleton. However, increased calcium excretion due to HP diet does not seem to be linked to impaired calcium balance. In contrast, some data indicate that HP intakes induce an increase of intestinal calcium absorption. Moreover, no clinical data support the hypothesis of a detrimental effect of HP diet on bone health, except in a context of inadequate calcium supply. In addition, HP intake promotes bone growth and retards bone loss and low-protein diet is associated with higher risk of hip fractures. The increase of acid and calcium excretion due to HP diet is also accused of constituting a favorable environment for kidney stones and renal diseases. However, in healthy subjects, no damaging effect of HP diets on kidney has been found in either observational or interventional studies and it seems that HP diets might be deleterious only in patients with preexisting metabolic renal dysfunction. Thus, HP diet does not seem to lead to calcium bone loss, and the role of protein seems to be complex and probably dependent on other dietary factors and the presence of other nutrients in the diet.

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Section: ~20-40 1 Weekmentioning

confidence: 99%

Protein intake, calcium balance and health consequences

et al. 2011

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“…The mandible is highly sensitive to alterations in body bone mass density (BMD), and numerous studies have demonstrated a correlation between mandibular and skeletal (vertebral) bone densities [6][7][8]. Bone quality differs among individuals [9] and can be assessed on different types of radiographs. Various indexes are available for the assessment of mandibular bone quality assessment on panoramic X-rays, based on the manual measurement of anatomical structures [10][11][12][13].…”

Section: Introductionmentioning

confidence: 99%

Alveolar bone level is not associated with vitamin D receptor gene polymorphism and bone density in mandible

Mesa

González

Souki³

et al. 2011

Clin Oral Invest

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The objective of this study was to determine, using digital panoramic radiographs, whether the bone level at the alveolar crest is related to the mandibular bone density and/or to vitamin D receptor (VDR) gene polymorphisms. We analyzed 319 digital panoramic radiographs from the same number of patients. Alveolar bone level was expressed as percentage of root length. The mandibular cortical width index was calculated as a measure of mandibular bone density, and, in 72 randomly selected cases, the haplotype of the VDR gene (BsmL) was determined by polymerase chain reaction. Alveolar bone level was not related to the mandibular cortical width index (p = 0.568) or VDR gene expression (p = 0.575). Bone loss was greater in smokers than in non-smokers (p = 0.036), and the mandibular cortical width index was higher in males (p = 0.04), the older age group (p = 0.032), and in those with more teeth (p = 0.01). Multivariate analysis confirmed the association between these variables and alveolar bone loss. Alveolar bone loss showed no significant relationship with the mandibular bone density evaluated on digital panoramic radiographs or with VDR genotype (BsmL) in Caucasian females and males aged under 47 years.

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“…In this regard, data from Asian populations is lacking. Reported ethnic variations in bone size, bone mineral density, craniofacial characteristics, differing dental disease patterns and other population specific characteristics may possibly impact residual ridge-remodeling patterns and resultantly residual alveolar bone heights (Lavelle 1973;Nelson & Megyesi 2004;Soh et al 2005;Wong et al 2007).…”

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confidence: 99%