Find research datasets worth reusing
Search datasets from major research repositories and use ShareScore to quickly assess how well each record supports discovery, access, and reuse.
1,210
datasets available to search
ShareScore release 0.9.0
Dataset results
1,210 results for “teeth”
Figure 1 in Integration patterns of cheek teeth and ecomorphological evolution in grinding herbivores: the case of caviine rodents (Caviomorpha: Caviidae)
Figure 1. Landmarks (large red circles) and semilandmarks (small orange circles) used to digitize cheek tooth series: A, B, the lower cheek teeth of Cavia (A) and Galea (B); and C, D, upper cheek teeth of Cavia (C) and †Dolicavia (D). See Supporting Information, File S2 for landmark and semilandmark definition.
Figure 4 in Integration patterns of cheek teeth and ecomorphological evolution in grinding herbivores: the case of caviine rodents (Caviomorpha: Caviidae)
Figure 4. Summary scheme of the shape optimization analyses of p4-m3 (lower diagrams) and P4-M3 (upper diagrams) onto a phylogenetic metatree (see Material and Methods section) using parsimony. Discussed ancestral reconstructions and terminal configurations at the generic level are illustrated (for the complete sets of ancestral reconstructions and terminal configurations at the species level, see Supporting Information, File S4). Red trails indicate trajectories of landmarks from the previous reconstruction. The extinct species are indicated by a cross. For fossils represented only by a single series, greydash diagrams represent the missing configurations illustrated by the closer ancestral reconstructed series.
Figure 5 in Integration patterns of cheek teeth and ecomorphological evolution in grinding herbivores: the case of caviine rodents (Caviomorpha: Caviidae)
Figure 5. Plot of the PLS 1 of the p4-m3 (lower) and the PLS 1 of the P4-M3 (upper) series. Deformation grids for extremes of each axis are illustrated.
Figure 1 in The killer's toolkit: remarkable adaptations in the canine teeth of mammalian carnivores
Figure 1. Variation in mammalian canine tooth shape (sharpness, robustness and curvature) as shown for representative marsupial and placental taxa. Each tooth shown is an upper canine. Top to bottom: leopard (Panthera pardus; NMV C36818), coyote (Canis latrans; NMV C31314), wolverine (Gulo gulo; USNM 290407), Tasmanian devil (Sarcophilus harrisii; NMV C6246) and Virginia opossum (Didelphis virginiana; USNM 149726).
Figure 3 in The killer's toolkit: remarkable adaptations in the canine teeth of mammalian carnivores
Figure 3. Morphospace of all upper and lower canine teeth measured in this study, showing shape variation in robustness, curvature and tip sharpness among families. Principal components analysis (PCA) of the Procrustes coordinates, where principal component 1 (PC1) is correlated with robustness and explains 50.63% of the shape variation present, and PC2 is correlated with curvature and explains 16.91% of the shape variation present. A, H, show the variation present in terrestrial mammalian carnivores across family groups. B–G, I–N, show differences in upper and lower canine teeth for key families, as indicated by minimum convex hulls (upper canine convex hulls are depicted by a lighter shade of the family colour and lower canine convex hulls by a darker shade of the family colour). Family groups represented are as follows: Canidae (B, I), Felidae (C, J), Ursidae (D, K), Mustelidae (E, L), Herpestidae (F, M) and Dasyuridae (G, N).
Figure 2 in The killer's toolkit: remarkable adaptations in the canine teeth of mammalian carnivores
Figure 2. Sharpness measurements (A, B) and landmarking protocol (C) as shown on a jaguar (Panthera onca; NMV R2541) upper canine. The cross-sectional area at 50% of the cusp height is indicated by the yellow line, and the sharpness areas measured are indicated by yellow-outlined areas. The three curves used in three-dimensional geometric morphometric analysis are indicated by red lines, and the landmarks are indicated by dots (blue, fixed landmark; red, sliding semi-landmark).
Figure 5 in The killer's toolkit: remarkable adaptations in the canine teeth of mammalian carnivores
Figure 5. Morphospace of all upper and lower canine teeth measured in this study, showing shape variation in robustness, curvature and tip sharpness among killing techniques. Principal components analysis (PCA) of the Procrustes coordinates, where principal component 1 (PC1) is correlated with robustness and explains 50.63% of the shape variation present, and PC2 is correlated with curvature and explains 16.91% of the shape variation present. A, H, show the variation present in terrestrial mammalian carnivores across killing technique groups. B–G, I–N, show differences in upper and lower canine teeth for key killing techniques, as indicated by minimum convex hulls (upper canine convex hulls are depicted by a lighter shade of the family colour and lower canine convex hulls by a darker shade of the family colour). Killing technique groups represented are as follows: shake toss (B, I), nape throat (C, J), anterior bite (D, K), invertebrate feeder (E, L), head bite (F, M) and rarely (G, N). In O–Q, the lower case letters denote significant differences and are based on phylogenetically corrected analyses (series of phylogenetic ANOVAs, followed by pairwise post hoc testing for significant differences among killing technique groups) of robustness (PC1; O), curvature (PC2; P) and canine tip sharpness (based on standardized crosssectional areas; Fig. 2; Q).
Figure 6 in The killer's toolkit: remarkable adaptations in the canine teeth of mammalian carnivores
Figure 6. Differences between upper and lower canine teeth of the same individual. A, canine tooth length based on a phylogenetic generalized least squares (PGLS) regression of log10(upper and lower canine tooth length). The dashed black line indicated a 1:1 relationship. B, plot of the differences in robustness [principal component 1 (PC1)] and curvature (PC2) between upper and lower canines; differences in PC scores were calculated as: (lower canine PC score) minus (upper canine PC score).
Figure 4 in The killer's toolkit: remarkable adaptations in the canine teeth of mammalian carnivores
Figure 4. Morphospace of all upper and lower canine teeth measured in this study, showing shape variation in robustness, curvature and tip sharpness among diets. Principal components analysis (PCA) of the Procrustes coordinates, where principal component 1 (PC1) is correlated with robustness and explains 50.63% of the shape variation present, and PC2 is correlated with curvature and explains 16.91% of the shape variation present. A, H, show the variation present in terrestrial mammalian carnivores across diet groups. B–G, I–N, show differences in upper and lower canine teeth for key diets, as indicated by minimum convex hulls (upper canine convex hulls are depicted by a lighter shade of the family colour and lower canine convex hulls by a darker shade of the family colour). Diet groups represented are as follows: meat (B, I), meat/bone (C, J), generalist (D, K), invertebrate terrestrial (E, L), carrion/bone (F, M) and plant (G, N). In O–Q, the lower case letters denote significant differences and are based on phylogenetically corrected analyses (series of phylogenetic ANOVAs, followed by pairwise post hoc testing for significant differences among diet groups) of robustness (PC1; O), curvature (PC2; P) and canine tip sharpness (based on standardized cross-sectional areas; Fig. 2; Q).
Supplementary Data for: Life history in primate teeth is revealed by changes in major and minor element concentrations measured via field-emission SEM-EDS analysis
<p>Overcoming the non-specificity of histological accentuated growth lines in hard tissues is an ongoing challenge. Identifying season at death and reproductive events has profound implications for evolutionary, ecological and conservation studies. Dental cementum is a mineralized tissue with yearly periodicity that continues deposition from tooth formation until death, maintaining a record spanning almost the entire life of an individual. Recent work has successfully employed elemental analysis of calcified incremental tissues to detect changes in extrinsic conditions such as diet and climate and to identify two important life history milestones: weaning and sexual maturity. Here, we employ field-emission scanning electron microscopy and energy-dispersive X-ray analysis to measure the relative concentrations of calcium, phosphorous, oxygen, magnesium and sodium in the cementum of 34 teeth from seven male and female rhesus macaques with known medical and life history information. We find that changes in relative magnesium concentrations correspond with reproductive events in females and breastfeeding in infants. Additionally, we observe seasonal calcium patterns in 77.3% of the samples.</p>
FIGURE 3 in On the first Baryonychinae (Theropoda, Spinosauridae) teeth from South America
FIGURE 3. Denticulated carinae in spinosaurids. A, LPUFS 5860 specimen; B, LPUFS 5870 specimen; C, LPUFS 5871 specimen; D, Baryonyx NHMUK PV R.9951 R.278 specimen; E, Suchomimus MNN G73-3 specimen. Scale bar equals 1 mm. Images D and E extracted and modified from Hendrickx et al. (2019; Fig. 15, p. 59).
FIGURE 5 in On the first Baryonychinae (Theropoda, Spinosauridae) teeth from South America
FIGURE 5. Results of multivariate analysis (LDA). Graphical result of discriminant analysis (bivariate plot of the first two axes [linear discriminant, LD], which account for 59.6% of the total variance); LPUFS specimens (red stars) are plotted within/ next to the Spinosauridae morphospace (delimited by green convex hulls). For the variables plotted on the graphs, see Table 2. Theropod silhouettes from phylopic.org, see acknowledgements.
FIGURE 2 in On the first Baryonychinae (Theropoda, Spinosauridae) teeth from South America
FIGURE 2. Photograph of Baryonychinae teeth from the Feliz Deserto Formation. LPUFS 5860: A, mesial view; B, distal view; C, labial view; D, lingual view; E, apical view; F, highlight of flutes (out of scale); G, highlight of enamel texture (out of scale); H, serrated carina. LPUFS 5870: I, mesial view; J, distal view; K, labial view; L, lingual view; M, apical view; N, highlight of flutes (out of scale); O, highlight of enamel texture (out of scale); P, serrated carina. LPUFS 5871: Q, mesial view; R, distal view; S, labial view; T, lingual view; U, apical view; V, highlight of flutes (out of scale); W, highlight of enamel texture (out of scale); X, serrated carina. Scale bars equals 10 mm, but in H, P, and X scale bars equals 1 mm. Anatomical abbreviations: dca-distal carina; de-denticles; ent-enamel surface texture; flu-flutes; mca-mesial carina.
FIGURE 4. Seven topologically parsimonious constrained trees retrieved from cladistic analysis using a in On the first Baryonychinae (Theropoda, Spinosauridae) teeth from South America
FIGURE 4. Seven topologically parsimonious constrained trees retrieved from cladistic analysis using a dentition-based data matrix (tree length = 1318; CI = 0.198; RI = 0.466), Bremer support is displayed below each node; LPUFS specimens (bold) are recovered within the Spinosauridae clade. Theropod silhouette from phylopic.org, see acknowledgements.
FIGURE 6 in On the first Baryonychinae (Theropoda, Spinosauridae) teeth from South America
FIGURE 6. Highlight for the denticulated carina in the specimen LPUFS 5871. Note that the individual denticles are composed of dentin, below the dental enamel. Scale bar equals 0.5 mm. Anatomical abbreviation: de-denticles.
FIGURE 1 in On the first Baryonychinae (Theropoda, Spinosauridae) teeth from South America
FIGURE 1. South American map with emphasis on the Canafístula 01 site (UTM DATUM WGS 84, Zone 24 L, 8 857 550 N/739 980 E), Sergipe State, Brazil. Silhouettes exemplify previous findings of this locality. Silhouettes from phylopic.org, see acknowledgements. Map modified from Lacerda et al. (2023).
Effect of radiotherapy on microhardness and surface morphology of pretreated primary teeth with silver diamine fluoride: an in vitro study
<p> Surface Microhardness (SMH) of the samples was tested by a Vickers microhardness testing machine (MITUTOYA, Japan) under a load of 50 grams for 10 seconds. The microhardness for each sample was assessed at five different sites within the sample, 300 µum <a href="#_msocom_4">]</a> apart from each other and their mean was considered as the final microhardness for that particular sample. Two representative samples for from each group that is 2 samples from SDF group and 2 samples from control group were prepared to be evaluated using carry out SEM (JEOL JSM-6380A). The samples were scanned at power of 100X, 500X and 1000X magnification and photomicrographs were taken to observe the structural changes in the enamel.</p> <p> </p>
Data for: Coping with abrasive food – diverging composition of radular teeth in two Porifera-consuming nudibranch species (Mollusca, Gastropoda)
<p><span>Molluscs forage with their radula, a chitinous membrane with teeth. Adaptations to hard or abrasive ingesta were well studied in Polyplacophora and Patellogastropoda, but for other taxa, there are large gaps in knowledge. Here, we investigated the nudibranch gastropods <em>Felimare</em> <em>picta</em> and <em>Doris</em> <em>pseudoargus</em>, both of which feed on Porifera. Tooth morphologies were documented by scanning electron microscopy and mechanical properties were tested by nanoindentation. We found that these parameters are rather similar in both species, indicating that teeth are similar in their function. To study the composition, teeth were visualized using confocal laser scanning microscopy (CLSM), to determine the degree of tanning, and analysed with energy-dispersive X-ray spectroscopy, to test the elemental composition. The emitted autofluorescence signal and the inorganic content differed between the species. This was especially prominent when studying the inner and outer tooth surfaces (leading and trailing edges). In <em>F. picta</em>, we detected high proportions of Si, whereas teeth of <em>D. pseudoargus</em> contained high amounts of Ca, which influenced the autofluorescence signal in CLSM. Employing nanoindentation, we determined high Young's modulus and hardness values for the leading edges of teeth, which relate to the Si- and Ca-content. This highlights that teeth with a similar morphology and mechanical properties can be mechanically enhanced via different chemical pathways in Nudibranchia.</span></p>
SEM images of SDF and control teeth
<p>This file contains SEM images of the SDF and control teeth for the study "Effect of radiotherapy on microhardness and surface morphology of pretreated primary teeth with silver diamine fluoride: an <em>in vitro</em> study"</p>
SEM images of control and SDF treated teeth after radiation therapy
<p>SEM images of control and SDF treated teeth after radiation therapy</p>
ScienceDex guides
Understand access before you commit
These curated guides explain access requirements, typical timelines, costs, and reuse considerations for widely used research datasets.
Allen Brain Atlas
Allen Brain Atlas is an Allen Institute collection of brain map atlases, datasets, APIs, and analysis tools covering mouse, human, and non-human primate brain resources.
Annotated Behaviour and Observability Dataset (ABODe)
ABODe is a University of Edinburgh DataShare dataset for behavior classification in group-housed mice using home-cage video, identities, bounding boxes, ground-plate positions, and annotator labels.
DANDI Archive for NWB datasets
DANDI is a BRAIN Initiative archive for publishing and sharing neurophysiology data, including electrophysiology, optophysiology, and behavioral data packaged as NWB and related standards.
International Brain Laboratory public data
The International Brain Laboratory public data releases expose standardized mouse decision-making experiments, including Neuropixels recordings, widefield calcium imaging, behavior, and session metadata accessed through the ONE API.
OpenNeuro
OpenNeuro is a free, open platform for sharing neuroimaging datasets, with public search, dataset pages, and download paths for web, S3, DataLad, and the OpenNeuro CLI.