“…Background: It has been suggested that fissures of the occlusal surface of equine cheek teeth may develop into crown fractures. Objectives: To examine the evolution of fissures present on the occlusal surface of cheek teeth. …”
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“…Here, we present the development of CdSe/CdTe/CdSe core/crown/crown (multi-crowned) type-II NPLs and systematic investigation of their optical properties, including their comparison with the traditional core/crown counterparts. …”
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“…In its natural forest environment, this triatomine is mainly found in palm tree crowns, where it easily establishes and develops dense populations. …”
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“…This was done at a distance corresponding to half the radius of the tree crown. The sampling points in the open pasture area (out of crown) were made in the same way, but at 15 m from the crown border. …”
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“…The independent units have distinctly different inter­action patterns between the aza­crown macrocycle and the chloro­form solvent mol­ecule. …”
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“…Following parameters are recorded from dental cast, i.e., crown length, crown width, papillary length (PL) and papillary width. …”
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“…The chemical reduction of π‐conjugated bilayer nanographene 1 (C(138)H(120)) with K and Rb in the presence of 18‐crown‐6 affords [K(+)(18‐crown‐6)(THF)(2)][{K(+)(18‐crown‐6)}(2)(THF)(0.5)][C(138)H(122) (3−)] (2) and [Rb(+)(18‐crown‐6)(2)][{Rb(+)(18‐crown‐6)}(2)(C(138)H(122) (3−))] (3). …”
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“…We, therefore, combined iodine and copper with the highly selective crown ether 1,4,7,10-tetraoxacyclododecane (12-crown-4). …”
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“…Teeth were randomly assigned into two groups of single-length and crown-down preparation techniques. In both mentioned groups, EdgeEvolve rotary system was used. …”
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“…The paper presents crown lengthening of severely mutilated teeth to increase the clinical crown height for adequate restoration.…”
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“…There is no consensus to date on the interrelationship of Paleozoic chondrichthyans, although three main phylogenetic hypotheses exist in the current literature: 1. the Paleozoic shark-like chondrichthyans, such as the Symmoriiformes, are grouped along with the modern sharks (neoselachians) into a clade which is sister group of holocephalans; 2. the Symmoriiformes are related to holocephalans, whereas the other Paleozoic shark-like chondrichthyans are related to neoselachians; 3. many Paleozoic shark-like chondrichthyans, such as the Symmoriiformes, are stem chondrichthyans, whereas stem and crown holocephalans are sister group to the stem and crown neoselachians in a crown-chondrichthyan clade. …”
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“…The stresses created by Gerber appliance were higher in the crown and PDL of the deciduous canine than the crown of the first permanent molar crown. …”
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“…The results showed that the images generated using the network constructed in this study had high quality, and the detailed pit and fissure features on the crown were effectively restored, with a standard deviation of 0.1802mm compared to the expert-designed tooth crown models.…”
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“…Combinations of post lengths of 6 mm (shorter than 1/1 clinical crown length), 9 mm (1/1 clinical crown length), and 12 mm (longer than 1/1 clinical crown length) made up 6 different groups consisting of 13 teeth each. …”
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“…The organotin molecules exhibit a six-coordinate metal atom and are linked to the crown ether molecules by water–crown ether O—H⋯O hydrogen bonds into a linear chain running along [101]. …”
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“…In this clinical report, a structurally compromised mandibular second molar with symptomatic irreversible pulpitis and normal apical tissue was endodontically treated. Surgical crown lengthening was attempted thereafter to increase the crown height. …”
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“…In order to promote dialogue on this subject, we here review factors (phylogeny, preservational megabiases, spatial and temporal patterns in the tetrapod fossil record) that complicate assignment of prior node age constraints for deep divergences in the tetrapod tree, focusing on the origin of crown-group Amniota, crown-group Amphibia, and crown-group Tetrapoda. …”
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“…MATERIALS AND METHODS: Total 45 primary maxillary incisors were randomly selected and divided into three groups of 15 each: group I—strip crowns (Pedoform strip crowns, 3M, United States), group II—zirconia crown (kids-e-crown, India), and group III—luxa crown (DMG, Germany). …”
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“…MATERIAL/METHODS: Pretreatment cone beam computed tomography (CBCT) of 40 patients (age range 11–34 years) with unilateral impacted maxillary canines (IC) were analyzed. The crown length, crown width, root length, and dilacerations of IC were assessed and compared with that of contralateral erupted canines (CC). …”
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“…With current coming from the “rear” (aboral) side of the crinoid, the conical opening of the crown produces a backward oriented flow in its wake that transports particles into the crown. …”
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