Abstract:This study compared the tubular dimensions and distribution of human and bovine dentin. Ten human molars and 10 bovine incisors were ground with a high-speed handpiece to obtain 3 sections at different dentin depths (superficial, middle and deep). The specimens were sputter-coated with gold to be examined under scanning electron microscopy (SEM). Three SEM micrographs were recorded randomly for each dentin depth. The number of tubules was counted and the diameter of 5 tubules selected at random was measured in… Show more
“…Therefore, 68 papers were included in the final review. The studies covered seven main categories: morphology (5 studies) (22)(23)(24)(25)(26), chemical composition (11 studies) (27)(28)(29)(30)(31)(32)(33)(34)(35)(36)(37), physical properties (12 studies) (38)(39)(40)(41)(42)(43)(44)(45)(46)(47)(48)(49), dental caries (7 studies) (6,9,(50)(51)(52)(53)(54), dental erosion/abrasion (10 studies) (55)(56)(57)(58)(59)(60)(61)(62)(63)(64), bonding/adhesive strength (17 studies) (65)(66)(67)(68)…”
Section: Search Resultsmentioning
confidence: 99%
“…No significant difference was found in the number of open dentin tubules in either species. In contrast, Lopes et al (26) compared the tubular dimensions and distribution of human and bovine dentin in superficial, middle and deep dentin regions. The authors found that the number of tubules per square millimeter, regardless of the region, was significantly higher in human dentin than in bovine dentin.…”
Section: Micro-morphology Studiesmentioning
confidence: 99%
“…Five studies were reviewed (22)(23)(24)(25)(26). All of the studies used scanning electron microscopy (SEM).…”
The aim of this paper was to review in vitro and in situ studies that directly compared the use of bovine teeth as a substitute for human teeth in dental experiments. A PubMed search was conducted for papers published from 1953 to December 30, 2010 using the following keywords: "human bovine enamel" or "human bovine dentin" or "human bovine teeth". The abstracts of the studies resulting from the keyword search were read, and all papers that compared human and bovine teeth were fully read. Only original articles written in English and directly comparing human and bovine substrates were included in the review. The search was supplemented by manual searches of the reference lists from each identified paper. Out of 76 studies initially selected, 68 fulfilled the selection criteria for inclusion. The studies covered seven categories: dental morphology, chemical composition, physical properties, dental caries, dental erosion/abrasion, bonding/adhesive strength, and marginal microleakage. Inconsistent data exist regarding whether bovine teeth can be considered an appropriate substitute for human teeth in dental research. Morphological, chemical composition and physical property differences between the two substrates must be considered when interpreting results obtained from any experiment using bovine tooth substrate. (J Oral Sci 53, 273-282, 2011)
“…Therefore, 68 papers were included in the final review. The studies covered seven main categories: morphology (5 studies) (22)(23)(24)(25)(26), chemical composition (11 studies) (27)(28)(29)(30)(31)(32)(33)(34)(35)(36)(37), physical properties (12 studies) (38)(39)(40)(41)(42)(43)(44)(45)(46)(47)(48)(49), dental caries (7 studies) (6,9,(50)(51)(52)(53)(54), dental erosion/abrasion (10 studies) (55)(56)(57)(58)(59)(60)(61)(62)(63)(64), bonding/adhesive strength (17 studies) (65)(66)(67)(68)…”
Section: Search Resultsmentioning
confidence: 99%
“…No significant difference was found in the number of open dentin tubules in either species. In contrast, Lopes et al (26) compared the tubular dimensions and distribution of human and bovine dentin in superficial, middle and deep dentin regions. The authors found that the number of tubules per square millimeter, regardless of the region, was significantly higher in human dentin than in bovine dentin.…”
Section: Micro-morphology Studiesmentioning
confidence: 99%
“…Five studies were reviewed (22)(23)(24)(25)(26). All of the studies used scanning electron microscopy (SEM).…”
The aim of this paper was to review in vitro and in situ studies that directly compared the use of bovine teeth as a substitute for human teeth in dental experiments. A PubMed search was conducted for papers published from 1953 to December 30, 2010 using the following keywords: "human bovine enamel" or "human bovine dentin" or "human bovine teeth". The abstracts of the studies resulting from the keyword search were read, and all papers that compared human and bovine teeth were fully read. Only original articles written in English and directly comparing human and bovine substrates were included in the review. The search was supplemented by manual searches of the reference lists from each identified paper. Out of 76 studies initially selected, 68 fulfilled the selection criteria for inclusion. The studies covered seven categories: dental morphology, chemical composition, physical properties, dental caries, dental erosion/abrasion, bonding/adhesive strength, and marginal microleakage. Inconsistent data exist regarding whether bovine teeth can be considered an appropriate substitute for human teeth in dental research. Morphological, chemical composition and physical property differences between the two substrates must be considered when interpreting results obtained from any experiment using bovine tooth substrate. (J Oral Sci 53, 273-282, 2011)
“…In human tooth DT diameters are approximately 0.9 µm at the DEJ and 2.5 µm at the surface facing a dental pulp where DT are also packed closer together [4]. Similarly, diameters of DT decrease towards the external layers of dentin in some animals (in canine teeth from 2.1 µm to 0.9 µm [5,6] and in equine teeth from 2.5 µm to 1.0 µm) [3], while in bovine teeth DT diameters are narrower at the dentin surface facing a pulp comparing to those at the periphery [7,8] (with main DT diameters measuring 1.8 µm at a pulp side and 2.3 µm at DEJ) [7].…”
Section: Introductionmentioning
confidence: 96%
“…In studies focusing adhesion to enamel and dentine bovine incisors are commonly employed as a substitute to human teeth [28,29], since they are larger and are easily obtained. Nevertheless, the use of bovine dentin in such studies is being questioned due to different microstructural characteristics [7,8] which significantly affect the strength of the adhesive bonds created among restorative materials and dentin [30]. The aim of the study was, first of all to determine variations in microstructure of porcine, canine, equine and human dentin as analysed by scanning electron microscope (SEM).…”
AbstractAnimal teeth are a common model in studies on dentin adhesive materials. The aim of this study was to compare microstructural parameters (density and diameter of dentinal tubules (DT), peritubular dentin (PTD) thickness, PTD and intertubular dentin (ITD) surface area) and chemical characteristics of canine, porcine, equine, and human root dentin. The middle layers of dentin were harvested just below a cemento-enamel junction from incisors and investigated by means of scanning electron microscopy (SEM) and energy dispersive X-ray spectroscopy (EDXS). SEM evaluation of the specimens revealed, that porcine dentin shared most similarities with human dentin. When comparing the density of DTs, canine dentin was also found to be similar to human dentin. Elemental composition of the root dentin did not differ significantly in porcine, equine and human dentin, but in canine dentin higher magnesium value in PTD compared to ITD was found. It is known that microstructural and chemical characteristics affect the strength of the adhesive bonds created among restorative materials and dentin. According to the results of this study, porcine dentin seems to be the most appropriate model to study dental materials to be used in human restorative dentistry.
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