Academic literature on the topic 'Human premolar'

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Journal articles on the topic "Human premolar"

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Patel, Suhag, Sunita Garg, Sumit Sabharwal, Neetika Jain, Shadabul Islam, and Vineet Kumar Pandey. "Study of root canal morphology of mandibular premolars in an indian population." Journal of Research in Dentistry 3, no. 5 (2016): 814. http://dx.doi.org/10.19177/jrd.v3e52015814-822.

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AIM: The purpose of this study was to describe the external and internal anatomy of the mandibular premolars. MATERIAL AND METHODS: 100 extracted human permanent mandibular first and second premolars teeth were collected. The length of the tooth from the cusp tip to root apex was measured with the help of Vernier calliper. In case of curved roots, ligature wire was adapted to the root and then straightened and measured. Each tooth was examined for the number of roots, curvature of root, presence of root canal invagination. India ink was injected into the pulp chamber through the access opening
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Anushka Yadav, B R Adyanthaya, Somendra Sarshwat, and Om Prakash Yadav. "Aberrant Pathway from Frustration to Fascination: Mandibular Second Premolar with Three Root Canals: A Case Report." International Healthcare Research Journal 1, no. 12 (2018): 373–76. http://dx.doi.org/10.26440/ihrj/01_12/151.

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Human mandibular premolars gained popularity as they have complex root and root canal morphology. Multiple roots and canals are more common in mandibular first premolars when compared to mandibular second premolars. The occurrence of three root canals and separate foramina in mandibular second premolars is not common. In this case report, endodontic management of a three-rooted mandibular second premolar is discussed.
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Aldesoki, Mostafa, and Khaled El-Sayed El-Haddad. "GEOMETRIC ANALYSIS OF THE MANDIBULAR FIRST PREMOLAR AND CORRELATION WITH ITS FUNCTIONS USING FINITE ELEMENT METHOD." International Journal of Advanced Research 12, no. 04 (2024): 358–67. http://dx.doi.org/10.21474/ijar01/18560.

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Introduction: The geometric analysis is of important value for exploring the functional adaptation of the human teeth. The mandibular first premolar is one of the permanent teeth that has unique geometric features to properly perform its functions. Purpose: To assess the geometric features of the mandibular first premolar functional and the stress analysis of the static occlusal forces using finite element method. Materials & Methods: Ten human extracted mandibular first premolars were photographed from different aspects to analyze the geometric morphology of the premolars. Dimensional mea
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Chutimanutskul, Wanjira, M. Ali Darendeliler, Michael V. Swain, Gang Shen, and Peter Petocz. "Physical properties of human premolar cementum: hardness and elasticity." Australasian Orthodontic Journal 21, no. 2 (2005): 117–21. http://dx.doi.org/10.2478/aoj-2005-0014.

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Abstract Aims: To determine if the cementum on the maxillary right and left first premolars has identical physical properties. Methods: Ten normal maxillary first premolar teeth, extracted from five orthodontic patients with a mean age of 14.0 years, were used. The teeth had not been subjected to an orthodontic force. The hardness and elastic modulus of the cementum were measured on the buccal and lingual surfaces of the roots at three locations: cervical third, middle third and apical third. Results: There were no significant side-to-side differences in cementum hardness (Mean side-to-side di
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S, Saravana Kumar. "Morphological and morphometrical study of mental foramen in dry adult human mandible and its clinical relevance." Medpulse International Journal of Anatomy 19, no. 2 (2021): 25–29. http://dx.doi.org/10.26611/10011923.

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Background: Mental foramen is situated in the anterolateral aspect of the body of the mandible. It lies below either the interval between the premolar teeth or the second premolar tooth, midway between the upper and lower borders of the body of the mandible. It transmits mental nerves, arteries, and veins. The mental nerve is a branch of the inferior alveolar nerve which supplies sensation to the lower lip, labial mucosa, lower canines, and premolars. The most useful injection for anaesthetizing the mandibular teeth is the inferior alveolar nerve block. To anaesthetize the anterior teeth inclu
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Symons, Anne L., and Aart A. R. Taverne. "A Family Case Report: Disturbances in Tooth form and Eruption of the Second Premolar." Australasian Orthodontic Journal 14, no. 3 (1996): 168–71. http://dx.doi.org/10.2478/aoj-1996-0017.

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Abstract This report describes a family who demonstrated anomalies of tooth form and eruption of the lower second premolar. Observation of the second premolars remaining in the mother’s and father’s dentitions included ectopic eruption with impaction and substantial spacing between the first and second premolars. Four siblings were also examined - three boys aged 15, 14 and 12 years, and one girl aged 11 years. Anomalies of the second premolar recorded in the males and female include: congenital absence, ectopic eruption with impaction, delayed eruption and spacing. Associated anomalies includ
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Kottoor, Jojo, Denzil Albuquerque, Natanasabapathy Velmurugan, and Jacob Kuruvilla. "Root Anatomy and Root Canal Configuration of Human Permanent Mandibular Premolars: A Systematic Review." Anatomy Research International 2013 (December 22, 2013): 1–14. http://dx.doi.org/10.1155/2013/254250.

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Introduction. Mandibular premolars have been reported with complex anatomical aberrations, making them one of the most difficult teeth to manage endodontically. Methodology. An exhaustive search was undertaken to identify associated anatomic studies of mandibular premolars through MEDLINE/PubMed database using keywords, and a systematic review of the relevant articles was performed. Chi-square test with Yates correction was performed to assess the statistical significance of any anatomic variations between ethnicities and within populations of the same ethnicity. Documented case reports of var
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Risinger, Ronald K., and William R. Proffit. "Continuous overnight observation of human premolar eruption." Archives of Oral Biology 41, no. 8-9 (1996): 779–89. http://dx.doi.org/10.1016/s0003-9969(96)00062-3.

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Salis, Sergio G., James A. A. Hood, Ewen E. J. Kirk, and Alastair N. S. Stokes. "Impact-fracture energy of human premolar teeth." Journal of Prosthetic Dentistry 58, no. 1 (1987): 43–48. http://dx.doi.org/10.1016/s0022-3913(87)80140-3.

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Proffit, W. R., J. R. Prewitt, H. S. Baik, and C. F. Lee. "Video Microscope Observations of Human Premolar Eruption." Journal of Dental Research 70, no. 1 (1991): 15–18. http://dx.doi.org/10.1177/00220345910700010101.

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Dissertations / Theses on the topic "Human premolar"

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Malek, Sameh. "Physical properties of human premolar cementum : a structural correlation." Thesis, The University of Sydney, 2000. http://hdl.handle.net/2123/4696.

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Clark, Gary James. "An Analysis Of The Physical Properties Of Human Dental Cementum Of Premolar Teeth Using Microindentation." Thesis, Faculty of Dentistry, 2009. http://hdl.handle.net/2123/4266.

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Srivicharnkul, Pennapa. "Changes In Physical Properties Of Human Premolar Cementum After The Application Of Controlled Orthodontic Forces." Thesis, Faculty of Dentistry, 2009. http://hdl.handle.net/2123/4406.

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Chutimanutskul, Wanjira. "Changes In Physical Properties Of Human Premolar Cementum After Application Of Four Weeks Of Controlled Orthodontic Forces." Thesis, Faculty of Dentistry, 2004. http://hdl.handle.net/2123/4405.

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Wu, Wen-Chou. "In vitro compressive fracture resistance of the human maxillary first premolar with different mod cavity design and restorative materials." Thesis, Birmingham, Ala. : University of Alabama at Birmingham, 2007. https://www.mhsl.uab.edu/dt/2007m/wu.pdf.

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Foong, Kelvin W. C. "A transmission electron microscope stereological analysis of the blood vessels and nerves in the human mandibular premolar periodontal ligament /." Title page, contents and summary only, 1994. http://web4.library.adelaide.edu.au/theses/09DM/09dmf686.pdf.

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Rex, Teriko. "A Comparative Quantitative Analysis Of The Mineral Composition Of Human Premolar Cementum After The Application Of Orthodontic Forces m- An Epma Study." Thesis, Faculty of Dentistry, 2002. http://hdl.handle.net/2123/4151.

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Schluter, Nathaniel D. "Human premotor cortex : imaging and interference." Thesis, University of Oxford, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.284344.

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Almy, Diana Marie-Skinner. "Bonding Properties of Newly Erupted and Mature Human Premolars." VCU Scholars Compass, 2004. http://scholarscompass.vcu.edu/etd/668.

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Following eruption of a tooth into the oral cavity, enamel is thought to continue to calcify. The continued calcification and maturation of enamel is described as "post-eruptive enamel maturation." It is believed that an observed decrease in enamel pore size and increase in the calcification of enamel matrix over time can be attributed to this process. In recent years, there has been a significant increase in the number of adult patients seeking orthodontic treatment. Since orthodontic attachments are bonded directly to the etched enamel using composite resin, post-eruptive enamel maturation m
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Abe, Mitsunari. "Functional coupling of human prefrontal and premotor areas during cognitive manipulation." Kyoto University, 2007. http://hdl.handle.net/2433/135750.

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Book chapters on the topic "Human premolar"

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Winkler, Alisa J., and Yukimitsu Tomida. "The Lower Third Premolar of Serengetilagus praecapensis (Mammalia: Lagomorpha: Leporidae) from Laetoli, Tanzania." In Paleontology and Geology of Laetoli: Human Evolution in Context. Springer Netherlands, 2010. http://dx.doi.org/10.1007/978-90-481-9962-4_3.

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Lemon, R. N. "Interactions Between Premotor and Motor Cortices in Non-Human Primates." In Cortical Connectivity. Springer Berlin Heidelberg, 2012. http://dx.doi.org/10.1007/978-3-662-45797-9_2.

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"Damage detection in a human premolar tooth from image processing to finite element analysis." In Biodental Engineering. CRC Press, 2009. http://dx.doi.org/10.1201/9780203855195-10.

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Passingham, Richard. "Premotor area 8." In The Frontal Lobes and Voluntary Action. Oxford University PressOxford, 1993. http://dx.doi.org/10.1093/oso/9780198521853.003.0005.

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Abstract This classification is supported by the functional evidence reviewed in this chapter. The argument is that, like area 6, area 8 plays a crucial role in the selection of movements. The difference lies in the nature of the movements. In a macaque brain, Brodmann (1925) identified area 8 as the tissue in the anterior bank of the arcuate sulcus, and on the convexity between the upper and lower limbs of the sulcus. Area 8 is very extensive in the human brain (Fig. 5.1).
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Geyer, Stefan, and Karl Zilles. "Functional neuroanatomy of the human motor cortex*." In Higher-order motor disorders. Oxford University PressOxford, 2006. http://dx.doi.org/10.1093/oso/9780198525769.003.0001.

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Abstract Until the second half of the twentieth century, it was widely believed that the cortical motor system of humans could be subdivided into three regions: the primary motor cortex (area 4) in the caudal wall and on the vertex of the precentral gyrus, the supplementary motor area further rostral on the mesial aspect of the frontal lobe (mesial part of area 6), and the premotor cortex on the lateral aspect of the frontal lobe (lateral part of area 6).
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Boussaoud, Driss. "The premotor cortex: from attention to intention." In Higher-order motor disorders. Oxford University PressOxford, 2006. http://dx.doi.org/10.1093/oso/9780198525769.003.0004.

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Abstract The capacity of the brain to process information about the external world and to plan and execute appropriate behavior has increased considerably throughout evolution, and has reached its highest level in mammals, especially the human and non-human primates. Our highly sophisticated sensory organs provide us with rich information about the external world, and our central nervous system has the capacity to extract relevant messages and process them in relation to context, previous experience, state of motivation, and other affective signals. Ultimately, the brain selects and executes o
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Mills, K. R. "Conclusions and future developments." In Magnetic Stimulation of the Human Nervous System. Oxford University PressNew York, NY, 2000. http://dx.doi.org/10.1093/oso/9780192629869.003.0019.

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Abstract There can be no doubt that the ability to stimulate the human brain painlessly has led to a greater understanding of human motor control. We now know that most, if not all, human muscles possess a fast corticospinal connection. We know in great detail how a brain stimulus evokes a complex descending volley of impulses in the corticospinal tract and how this volley interacts with the spinal motoneurons. We know that brain stimuli can activate cells in the premotor, motor, sensory and visual cortices and that with threshold stimuli inhibition predominates.
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Devaux, Bertrand, Francine Chassoux, Elisabeth Landré, and Baris Turak. "Depth EEG in Sensorimotor Cortex Epilepsy." In Invasive Studies of the Human Epileptic Brain, edited by Samden D. Lhatoo, Philippe Kahane, and Hans O. Lüders. Oxford University Press, 2018. http://dx.doi.org/10.1093/med/9780198714668.003.0028.

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Surgery for intractable seizures originating from the sensorimotor cortex is associated with a risk of permanent deficit and a risk of incomplete epileptogenic tissue removal. Depth electrode implantation in the sensorimotor region has been performed over several decades with acceptable morbidity. Motor, sensory, premotor, supplementary motor area, and connected areas (parietal lobe, cingulate gyrus, and insular cortex) are explored with orthogonal and oblique electrodes. Implantation strategy is guided by ictal semiology and by the type of epileptogenic lesion identified on imaging. SEEG may
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Blakemore, Sarah-Jayne. "When the Other Influences the Self:Interference Between Perception and Action." In Human Body Perception From The Inside Out. Oxford University PressNew York, NY, 2005. http://dx.doi.org/10.1093/oso/9780195178371.003.0019.

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Abstract The notion that actions are intrinsically linked to perception goes back to the 19th century when William Carpenter developed the principle of “ideomotor action,” in which simply thinking about an action is sufficient to lead to the performance of an action (Carpenter, 1888). Similarly, William James claimed, “[E]very mental representation of a movement awakens to some degree the actual movement which is its object” (James, 1890, p. 293). The implication is that observing, imagining, or in any way representing an action excites the motor programs used to execute that same action (Jean
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McGonigal, Aileen, and Patrick Chauvel. "SEEG in Frontal Lobe Epilepsy." In Invasive Studies of the Human Epileptic Brain, edited by Samden D. Lhatoo, Philippe Kahane, and Hans O. Lüders. Oxford University Press, 2018. http://dx.doi.org/10.1093/med/9780198714668.003.0023.

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Frontal lobe epilepsy (FLE) constitutes a challenge for presurgical evaluation because of specific anatomical and physiological factors. Semiological expression of frontal lobe seizures is notably varied and complex but nevertheless certain distinct patterns can be characterized, associated with different sublobar epilepsy localizations. These electro-clinical patterns have been largely demonstrated by stereo-electroencephalographic (SEEG) studies. An electro-clinical spectrum of semiological expression has been shown, with the most anterior prefrontal regions being associated with complex mot
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Conference papers on the topic "Human premolar"

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Hedayat, Assem, and Pengyu Wu. "EndoCal 10 Obturation Voids in Root Canal and Isthmus of a Human Premolar: A Synchrotron micro-CT Imaging Study." In 5th International Conference on Bioimaging. SCITEPRESS - Science and Technology Publications, 2018. http://dx.doi.org/10.5220/0006582900430049.

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Santos, A. F., M. Polido, A. P. Serro, and C. G. Figueiredo-Pina. "COMPARATIVE TRIBOLOGICAL STUDY OF TWO PROSTHETIC DENTAL MATERIALS: ZIRCONIA AND VITA ENAMIC." In BALTTRIB. Aleksandras Stulginskis University, 2017. http://dx.doi.org/10.15544/balttrib.2017.29.

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The purpose of this study was to compare the tribological behaviour of two commercial prosthetic materials – Zirconia and a polymer infiltrated ceramic (PIC) commercially known as VITA ENAMIC – when tested against human molars/premolars. Samples of both materials were prepared and their hardness, wettability and topography were characterised. Antagonist teeth samples were prepared by cutting human molars/premolars to obtain isolated cusps. A wear test was performed during 306,000 chewing cycles, corresponding to 1.5 year of mastication, using a simulator with artificial saliva as lubricant. Th
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Branco, A., M. Polido, A. P. Serro, and C. G. Figueiredo-Pina. "STUDY OF THE EFFECT OF H2O2 USED IN WHITENING TREATMENTS ON HUMAN ENAMEL WEAR RESISTANCE." In BALTTRIB. Aleksandras Stulginskis University, 2017. http://dx.doi.org/10.15544/balttrib.2017.22.

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Tooth whitening treatments are based on the application of bleaching agents on the teeth surface, which can impair teeth health, due to its effect on enamel properties. The present work has the purpose of studying the effect of pH of H2O2 solutions on wear resistance of teeth. Friction coefficient, enamel microhardness, morphology and topography were also evaluated to better understand the induced changes. Three pH values (2, 4 and 6) of H2O2 solution were tested. First, human molars and premolars were disinfected, polished, cut in four equal pieces and darkened in a black tea solution. After,
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Patel, Krishna, Michael Stevens, Suyash Adhikari, Greg Book, Muhammad Mubeen, and Godfrey Pearlson. "Acute cannabis-related alterations in an fMRI time estimation task." In 2022 Annual Scientific Meeting of the Research Society on Marijuana. Research Society on Marijuana, 2022. http://dx.doi.org/10.26828/cannabis.2022.02.000.26.

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Introduction: Cannabis is widely popular recreational drug of choice in the US. The drug is known to alter the subjective experience of time. However, its effects on time estimation at a brain level are still largely unexplored. Our goal was to investigate acute effects of cannabis on an fMRI time estimation task by evaluating brain activation differences between cannabis and placebo conditions. We hypothesized that participants’ time estimation accuracy and corresponding BOLD response would be altered during the cannabis condition in a dose-related manner, compared to placebo. Methods: In thi
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Pachnicz, D. "Application of digital image correlation method to assess temporalis muscle activity during unilateral cyclic loading of the human masticatory system." In Experimental Mechanics. Materials Research Forum LLC, 2023. http://dx.doi.org/10.21741/9781644902578-9.

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Abstract. This paper presents an in vivo experimental study in which an optical digital image correlation system was used to assess the activity of the temporalis muscle. The muscle activity was analysed and assessed based on its displacements resulting from unilateral cyclic loading and unloading of a specimen placed on one side of the mandible between pairs of corresponding premolars and molars. Two sets of synchronised cameras (two per side) positioned on the working and non-working sides were used for the measurements. The results of the measurements were analysed individually for each par
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