Hard tissue of teeth and their calcium and phosphate content in Ambystoma mexicanum (Urodela: Ambystomatidae)

Bolte, M.; Krefting, E. R.; Clemen, Günter

doi:10.1016/s0940-9602(96)80016-1

Cited by 13 publications

(12 citation statements)

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“…With reflective practice, experts adapt their governing analytical premises to the complex problem at hand [ 11 - 13 , 24 ]. In decision theory, the expert attempts to calculate the probabilities of various outcomes within a specific calculative framework [ 25 , 26 ]. With tacit knowledge, the expert uses implicit decisional processes of which he/she is not consciously aware [ 27 ].…”

Section: Discussionmentioning

confidence: 99%

The interpretation of systematic reviews with meta-analyses: an objective or subjective process?

Shrier

Boivin

Platt

et al. 2008

BMC Med Inform Decis Mak

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Section: Discussionmentioning

confidence: 99%

The interpretation of systematic reviews with meta-analyses: an objective or subjective process?

Shrier

Boivin

Platt

et al. 2008

BMC Med Inform Decis Mak

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“…7). However, despite their common origin, in adult caudates the crown and pedicel possess a different Ca/P ratio (Clemen, Greven & Schröder, 1980; Bolte, Krefting & Clemen, 1996). In Ambystoma mexicanum this ratio, which determines the hardness of the tooth region, is 45.9% in the central crown versus 38.4% in the central pedicel.…”

Section: Overview Of Tooth Morphology and Structure In Lissamphibmentioning

confidence: 99%

Amphibian teeth: current knowledge, unanswered questions, and some directions for future research

et al. 2007

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Elucidation of the mechanisms controlling early development and organogenesis is currently progressing in several model species and a new field of research, evolutionary developmental biology, which integrates developmental and comparative approaches, has emerged. Although the expression pattern of many genes during tooth development in mammals is known, data on other lineages are virtually non-existent. Comparison of tooth development, and particularly of gene expression (and function) during tooth morphogenesis and differentiation, in representative species of various vertebrate lineages is a prerequisite to understand what makes one tooth different from another. Amphibians appear to be good candidates for such research for several reasons: tooth structure is similar to that in mammals, teeth are renewed continuously during life (=polyphyodonty), some species are easy to breed in the laboratory, and a large amount of morphological data are already available on diverse aspects of tooth biology in various species. The aim of this review is to evaluate current knowledge on amphibian teeth, principally concerning tooth development and replacement (including resorption), and changes in morphology and structure during ontogeny and metamorphosis. Throughout this review we highlight important questions which remain to be answered and that could be addressed using comparative morphological studies and molecular techniques. We illustrate several aspects of amphibian tooth biology using data obtained for the caudate Pleurodeles waltl. This salamander has been used extensively in experimental embryology research during the past century and appears to be one of the most favourable amphibian species to use as a model in studies of tooth development.

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“…This suture is lingually broader than labially as known from teeth of the majority of Urodela. If present, this suture, called also dividing zone or zone of weakness, is less mineralized or in part unmineralized compared to the pedicel and crown (see CLEMEN et al, 1980;MOURY et al, 1988;GREVEN et al, 1989;BOLTE et al, 1996). When treated with enzymes or lye to remove soft tissue from dentigerous bones, the dividing zone of such teeth often show collagen fi bres or especially in larvae breakthroughs to the pulp (e.g.…”

Section: Discussionmentioning

confidence: 99%

Sex dimorphic dentition and notes on the skull and hypbranchium in the hynobiid salamander Pachyhynobius shangchengensis FEI, QU & WU, 1983 (Urodela: Amphibia)

Clemen¹,

Greven²

2009

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A noticeable sex-dimorphic dentition is described in the hynobiid salamander Pachyhynobius shangchengensis. In the upper and lower jaw, the male possesses pedicellate teeth with a chisel- or spearhead-like crown, i.e. secondary (labial) cusps of teeth are largely reduced, whereas the primary (lingual) cusps are fl attened antero-posteriorly and exhibit sharp edges. In contrast, females have pedicellate, somewhat fl attened teeth more variable in shape, but with small bladed labial and large bladed lingual cusps. Vomeres of both sexes bear typical bicuspid, pedicellate teeth. Skulls including the hyobranchium are largely ossifi ed with some minor differences between males and females. However, females appear to lack the pars hypohyalis in the hyobranchial apparatus.

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Hard tissue of teeth and their calcium and phosphate content in Ambystoma mexicanum (Urodela: Ambystomatidae)

Cited by 13 publications

References 14 publications

The interpretation of systematic reviews with meta-analyses: an objective or subjective process?

The interpretation of systematic reviews with meta-analyses: an objective or subjective process?

Amphibian teeth: current knowledge, unanswered questions, and some directions for future research

Sex dimorphic dentition and notes on the skull and hypbranchium in the hynobiid salamander Pachyhynobius shangchengensis FEI, QU & WU, 1983 (Urodela: Amphibia)

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Hard tissue of teeth and their calcium and phosphate content in Ambystoma mexicanum (Urodela: Ambystomatidae)

Cited by 13 publications

References 14 publications

The interpretation of systematic reviews with meta-analyses: an objective or subjective process?

The interpretation of systematic reviews with meta-analyses: an objective or subjective process?

Amphibian teeth: current knowledge, unanswered questions, and some directions for future research

Sex dimorphic dentition and notes on the skull and hypbranchium in the hynobiid salamander Pachyhynobius shangchengensis FEI, QU &amp; WU, 1983 (Urodela: Amphibia)

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Sex dimorphic dentition and notes on the skull and hypbranchium in the hynobiid salamander Pachyhynobius shangchengensis FEI, QU & WU, 1983 (Urodela: Amphibia)