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Journal articles on the topic 'Apical size'

Author: Grafiati

Published: 4 June 2021

Last updated: 3 February 2022

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1

Souza, Ronaldo Araújo, Yara T. Corrêa Silva Sousa, José Antônio Poli de Figueiredo, João da Costa Pinto Dantas, Suely Colombo, and Jesus Djalma Pécora. "Influence of apical foramen lateral opening and file size on cemental canal instrumentation." Brazilian Dental Journal 23, no. 2 (2012): 122–26. http://dx.doi.org/10.1590/s0103-64402012000200006.

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Since instrumentation of the apical foramen has been suggested for cleaning and disinfection of the cemental canal, selection of the file size and position of the apical foramen have challenging steps. This study analyzed the influence of apical foramen lateral opening and file size can exert on cemental canal instrumentation. Thirty-four human maxillary central incisors were divided in two groups: Group 1 (n=17), without flaring, and Group 2 (n=17), with flaring with LA Axxess burs. K-files of increasing diameters were progressively inserted into the canal until binding at the apical foramen

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Kum, Kee-Yeon. "Apical prepration size in infected root canals." Journal of Korean Academy of Conservative Dentistry 35, no. 1 (2010): 1. http://dx.doi.org/10.5395/jkacd.2010.35.1.001.

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Silva, Emmanuel João Nogueira Leal, João M. Teixeira, Nancy Kudsi, Luciana M. Sassone, Renato L. Krebs, and Tauby S. Coutinho-Filho. "Influence of Apical Preparation Size and Working Length on Debris Extrusion." Brazilian Dental Journal 27, no. 1 (2016): 28–31. http://dx.doi.org/10.1590/0103-6440201600337.

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Abstract The aim of this study was to quantitatively evaluate the amount of apically extruded debris by single-file reciprocating instruments with different working lengths and apical preparation sizes. Eighty human single-rooted mandibular incisors were used and conventional access cavities were prepared. Then, the specimens were divided into four groups (n=20), according to root canal instrumentation: Reciproc size 25, .08 taper and Reciproc size 40, .06 taper instruments were used at the foramen; Reciproc size 25, .08 taper and Reciproc size 40, .06 taper instruments were used 1 mm short of

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Crossley, Aaron M., Phillip M. Campbell, Larry P. Tadlock, Emet Schneiderman, and Peter H. Buschang. "Is there a relationship between dental crowding and the size of the maxillary or mandibular apical base?" Angle Orthodontist 90, no. 2 (2019): 216–23. http://dx.doi.org/10.2319/051019-324.1.

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ABSTRACT Objective: To determine whether apical base size is related to dental crowding. Materials and Methods: Digital scans of dental casts were taken of 75 untreated Class I adults to measure maxillary and mandibular tooth size, dental arch perimeters, intermolar widths, and intercanine widths. Cone beam computed tomography (CBCT) images were used to measure the apical base of the maxilla and mandible, including the total cross-sectional area, five basal arch perimeters and five basal arch widths. Principal components factor analyses were performed to evaluate the relationships between the

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Bruurs, Lucas J. M., Lisa Donker, Susan Zwakenberg, et al. "ATP8B1-mediated spatial organization of Cdc42 signaling maintains singularity during enterocyte polarization." Journal of Cell Biology 210, no. 7 (2015): 1055–63. http://dx.doi.org/10.1083/jcb.201505118.

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During yeast cell polarization localization of the small GTPase, cell division control protein 42 homologue (Cdc42) is clustered to ensure the formation of a single bud. Here we show that the disease-associated flippase ATPase class I type 8b member 1 (ATP8B1) enables Cdc42 clustering during enterocyte polarization. Loss of this regulation results in increased apical membrane size with scattered apical recycling endosomes and permits the formation of more than one apical domain, resembling the singularity defect observed in yeast. Mechanistically, we show that to become apically clustered, Cdc

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Laslami, Kaoutar, Sara Dhoum, Amine El Harchi, and Iman Benkiran. "Relationship between the Apical Preparation Diameter and the Apical Seal: An In Vitro Study." International Journal of Dentistry 2018 (2018): 1–5. http://dx.doi.org/10.1155/2018/2327854.

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Objectives. The aim of the study is to define the relationship between the apical preparation diameter and the apical sealing ability to highlight the importance of the preservation of the diameter and the original position of the apical foramen. Materials and Methods. 50 extracted maxillary incisors were randomly allocated into three groups of 15 teeth each (n = 15) according to the apical preparation size: Group 1: finishing file F1 corresponding to size 20 reached the working length (ProTaper Universal system Dentsply®); Group 2: prepared up to size 30 corresponding to finishing file F30; G

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Wakia, Tasnim, Mohammad Aminul Islam, Mohammad Naser, Md Shamsul Alam, and Md Ismail Hossain. "Evaluation of Mineral Trioxide Aggregate for Root end Closure of Nonvital Permanent Teeth with Open Apices." Update Dental College Journal 3, no. 2 (2014): 13–19. http://dx.doi.org/10.3329/updcj.v3i2.17994.

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Objective: To evaluate the clinical and radiological outcome of MTA in nonvital teeth with open apices. Methods: Twenty-five non-vital teeth with open apices were treated with MTA apexification procedure. Standard endodontic procedures were followed and an apical plug of at least 5 mm was created by using MTA after a calcium hydroxide intra-canal dressing for at least 1 week. Final obturation was done after 24 hours by vertical compaction technique using gutta percha. Patients were recalled at 3, 6, 9 and 12 months interval. Clinical outcome was evaluated by assessing pain, tenderness, mobilit

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Teixeira, J. M. S., F. M. Cunha, R. O. Jesus, E. J. N. L. Silva, S. R. Fidel, and L. M. Sassone. "Influence of working length and apical preparation size on apical bacterial extrusion during reciprocating instrumentation." International Endodontic Journal 48, no. 7 (2014): 648–53. http://dx.doi.org/10.1111/iej.12357.

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9

Hecker, Hanjo, Tibor Bartha, Claus Löst, and Roland Weiger. "Determining the apical preparation size in premolars: part III." Oral Surgery, Oral Medicine, Oral Pathology, Oral Radiology, and Endodontology 110, no. 1 (2010): 118–24. http://dx.doi.org/10.1016/j.tripleo.2010.03.001.

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10

Pecora, J. D., A. Capelli, D. M. Z. Guerisoli, J. C. E. Spanó, and C. Estrela. "Influence of cervical preflaring on apical file size determination." International Endodontic Journal 38, no. 7 (2005): 430–35. http://dx.doi.org/10.1111/j.1365-2591.2005.00946.x.

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11

Hong, Hye-Young, Ho-Young Choi, and Gi-Woon Choi. "Effectiveness of customized master cone on apical sealing in various apical size of prepared root canals." Journal of Korean Academy of Conservative Dentistry 27, no. 1 (2002): 66. http://dx.doi.org/10.5395/jkacd.2002.27.1.066.

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12

Nathani, Tousif Iqbal, Aatif Iqbal Nathani, Ankur Mahesh Banode, et al. "Apical preparation size after repetitive pecking to the working length using different endodontic file systems." Giornale Italiano di Endodonzia 32, no. 2 (2019): 80–85. http://dx.doi.org/10.4081/j.gien.2018.7.

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Aim: The purpose of this study was to determine and evaluate the apical preparation size resulting from different pecking times to the working length (WL) with five different file systems. Materials and methods: Fifty standard simulated endodontic J-shaped blocks were instrumented using ProTaper NEXT (PTN), WaveOne (WO), WaveOne Gold (WOG), OneShape (OS) and the Self- Adjusting File (SAF) (n = 10) with different pecking times (1, 2 and 4) to the WL. For the SAF group, instrumentation was done till WL according to the time, i.e. 1, 3 and 4 min. On completion of each stage, silicone impression m

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Bruurs, Lucas J. M., Mirjam C. van der Net, Susan Zwakenberg, et al. "The Phosphatase PTPL1 Is Required for PTEN-Mediated Regulation of Apical Membrane Size." Molecular and Cellular Biology 38, no. 12 (2018): e00102-18. http://dx.doi.org/10.1128/mcb.00102-18.

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ABSTRACT PTEN is a tumor suppressor that is frequently lost in epithelial malignancies. A part of the tumor-suppressive properties of PTEN is attributed to its function in cell polarization and consequently its role in maintaining epithelial tissue integrity. However, surprisingly little is known about the function and regulation of PTEN during epithelial cell polarization. We used clustered regularly interspaced short palindromic repeat (CRISPR)/Cas9-mediated gene disruption to delete PTEN in intestinal epithelial Ls174T:W4 cells, which upon differentiation form a microvillus-covered apical m

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Loewe, Benjamin, Francesco Serafin, Suraj Shankar, Mark J. Bowick, and M. Cristina Marchetti. "Shape and size changes of adherent elastic epithelia." Soft Matter 16, no. 22 (2020): 5282–93. http://dx.doi.org/10.1039/d0sm00239a.

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Ariffin, Ahmad Fahmi, Mohd Hafizal Harudin, S. Kanagasingam, MM Rahman, and WA Wan Noorina. "Apical extrusion of sodium hypochlorite irrigation during root canal treatment using monoject or hypodermic irrigation needle." Bangladesh Journal of Medical Science 15, no. 4 (2016): 575–78. http://dx.doi.org/10.3329/bjms.v15i4.30717.

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Objective: Sodium hypochlorite has been routinely delivered into the pulp canal via irrigation needle. The study aimed at to determine the advantage and disadvantage of apical extrusion of sodium hypochloride using monoject or hypodermic irrigation needle in root canal treatment.Materials and Methods: Eighty single rooted teeth with closed apices were used in this in vitro study to determine apical extrusion of sodium hypochlorite using the gel diffusion technique. Extracted human anterior teeth were used as study samples. Monoject (size 27G) and hypodermic (27G× ½, 0.40×13mm, Terumo Needle) i

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Ashwini, TS, and Sonam Bhandari. "The Influence of Cervical Preflaring of Root Canal on Determination of Initial Apical File using Gates Glidden Drills, Protaper, Race and Diamond-Coated Galaxy Files." Journal of Contemporary Dental Practice 13, no. 4 (2012): 554–58. http://dx.doi.org/10.5005/jcdp-13-4-554.

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ABSTRACT Aim To investigate the influence of cervical preflaring on apical file size determination using four different rotary instruments. Materials and methods Fifty root canals from extracted human maxillary premolars with complete root formation, straight roots were used for the study. Access opening was done and the working length established with 8 no K-file for each canal. Teeth were randomly divided into five groups of 10 canals. In Group 1- no preflaring was done and acted as control and in Groups 2, 3, 4 and 5 cervical and middle third preflaring of the root canals were done using Ga

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Owens, John N., and Sheila J. Simpson. "Bud and shoot development in Piceaengelmannii in response to cone induction treatments." Canadian Journal of Forest Research 18, no. 2 (1988): 231–41. http://dx.doi.org/10.1139/x88-034.

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Apical size, mitotic index and developmental anatomy, and lateral shoot mitotic index and cell elongation were assessed in potted ramets of Piceaengelmannii (Parry) under seven cone-induction treatments using various combinations of drought, heat, and gibberellin A4/7. In control trees lateral shoot elongation resulted primarily from cell divisions before vegetative bud flush and cell elongation following bud flush. The most rapid phase of shoot elongation occurred as the mitotic index decreased and cell elongation increased. The best cone induction occurred with treatments that retarded apica

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Chu, Huangwei, and Dabing Zhang. "The Shoot Apical Meristem Size Regulated by FON4 in Rice." Plant Signaling & Behavior 2, no. 2 (2007): 115–16. http://dx.doi.org/10.4161/psb.2.2.3641.

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Wan, Chunyan, Guohua Yuan, Jingwen Yang, et al. "MMP9 Deficiency Increased the Size of Experimentally Induced Apical Periodontitis." Journal of Endodontics 40, no. 5 (2014): 658–64. http://dx.doi.org/10.1016/j.joen.2014.01.003.

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Tungsawat, Pakit, Pondpun Arunrukthavorn, Phawinee Phuntusuntorn, Suphakit Opatragoon, Pharsiri Sirirangsee, and Surat Inklub. "Comparison of the Effect of Three Irrigation Techniques and Root Canal Preparation Size on Sodium Hypochlorite Penetration into Root Canal Dentinal Tubules." International Journal of Dentistry 2021 (March 31, 2021): 1–6. http://dx.doi.org/10.1155/2021/6612588.

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Objective. This study aims to compare the effects of conventional syringe irrigation (CSI), passive ultrasonic irrigation (PUI), and innovative sonic-powered irrigation (EDDY) on the penetration of sodium hypochlorite (NaOCl) solutions into root canal dentinal tubules at different levels of the root canal. Materials and Methods. One hundred ninety-two extracted first mandibular premolars of 17- to 25-year-old patients were decoronated 13 mm from the root apices and separated into two groups according to apical preparation sizes (APS) 25 and 40. The root canals were dried with a paper point and

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Uzelac, Branka, Dusica Janosevic, Dragana Stojicic, and Snezana Budimir. "Effect of cytokinins on shoot apical meristem in Nicotiana tabacum." Archives of Biological Sciences 64, no. 2 (2012): 511–16. http://dx.doi.org/10.2298/abs1202511u.

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Cytokinins are involved in plant cell proliferation leading to plant growth and morphogenesis. The size, activity and maintenance of the shoot apical meristem (SAM) are defined by a balanced rate of mitotic cell divisions and functional cell differentiation that are controlled by cytokinins. In order to investigate the effect of exogenous cytokinin on SAM, morpho-anatomical changes in the shoot apices of tobacco treated with benzyladenine (BA) were compared to those of untreated control plants.

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Yu, Fengwei, Yu Cai, Rachna Kaushik, Xiaohang Yang та William Chia. "Distinct roles of Gαi and Gβ13F subunits of the heterotrimeric G protein complex in the mediation of Drosophila neuroblast asymmetric divisions". Journal of Cell Biology 162, № 4 (2003): 623–33. http://dx.doi.org/10.1083/jcb.200303174.

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The asymmetric division of Drosophila neuroblasts involves the basal localization of cell fate determinants and the generation of an asymmetric, apicobasally oriented mitotic spindle that leads to the formation of two daughter cells of unequal size. These features are thought to be controlled by an apically localized protein complex comprising of two signaling pathways: Bazooka/Drosophila atypical PKC/Inscuteable/DmPar6 and Partner of inscuteable (Pins)/Gαi; in addition, Gβ13F is also required. However, the role of Gαi and the hierarchical relationship between the G protein subunits and apical

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Chen, M. C., A. Chang, T. Buhl, M. Tanner, and A. H. Soll. "Apical acidification induces paracellular injury in canine gastric mucosal monolayers." American Journal of Physiology-Gastrointestinal and Liver Physiology 267, no. 6 (1994): G1012—G1020. http://dx.doi.org/10.1152/ajpgi.1994.267.6.g1012.

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We used primary monolayer cultures of enzyme-dispersed canine oxyntic mucosal cells mounted in Ussing chambers to characterize the apical barrier to H+. [3H]mannitol flux (MF) and [14C]inulin flux (IF) were used as size probes for tight junctions. Apical H+ produced a three-phase effect. In phase 1, as the apical pH was decreased from 7 to about 2.5, resistance (R) increased, but short-circuit current (Isc) did not change. In phase 2, an increased paracellular permeability developed at pH below 2.5-1.7, evidenced by decreased R and increased MF but not IF. Size sieving and monolayer integrity

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Gamblin, Clémence L., Émilie J. L. Hardy, François J. M. Chartier, Nicolas Bisson, and Patrick Laprise. "A bidirectional antagonism between aPKC and Yurt regulates epithelial cell polarity." Journal of Cell Biology 204, no. 4 (2014): 487–95. http://dx.doi.org/10.1083/jcb.201308032.

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During epithelial cell polarization, Yurt (Yrt) is initially confined to the lateral membrane and supports the stability of this membrane domain by repressing the Crumbs-containing apical machinery. At late stages of embryogenesis, the apical recruitment of Yrt restricts the size of the apical membrane. However, the molecular basis sustaining the spatiotemporal dynamics of Yrt remains undefined. In this paper, we report that atypical protein kinase C (aPKC) phosphorylates Yrt to prevent its premature apical localization. A nonphosphorylatable version of Yrt dominantly dismantles the apical dom

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Parveen, Sultana, Mozammal Hossain, Md Abdul Hannan Sheikh, and Md Joynal Abdin. "Healing of periapical lesion with mineral trioxide aggregate apexification." Bangabandhu Sheikh Mujib Medical University Journal 11, no. 2 (2018): 122. http://dx.doi.org/10.3329/bsmmuj.v11i2.36448.

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<p class="Abstract">In the present study, the ability of mineral trioxide aggregate in the formation of apical plug for healing of large periapical lesion with open apex was assessed and evaluated the clinical outcome. Fifteen participants with periapical lesion at the upper anterior teeth with open apex were treated with mineral trioxide aggregate. The effect on healing of apical size was evaluated at 3, 6, and 12 months by radiological examinations in the form of periapical index criteria, diameter of the lesion size and the presence or absence of apical tissue barrier. The results fou

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Hill, Austin M., Abigail Shatkin-Margolis, Benjamin C. Smith, and Rachel N. Pauls. "Associating genital hiatus size with long-term outcomes after apical suspension." International Urogynecology Journal 31, no. 8 (2019): 1537–44. http://dx.doi.org/10.1007/s00192-019-04138-x.

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Ibelli, Guilherme Siqueira, Juliana Machado Barroso, Alexandre Capelli, Júlio César Emboava Spanó, and Jesus Djalma Pécora. "Influence of cervical preflaring on apical file size determination in maxillary lateral incisors." Brazilian Dental Journal 18, no. 2 (2007): 102–6. http://dx.doi.org/10.1590/s0103-64402007000200003.

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The purpose of this study was to investigate the influence of cervical preflaring on determination of the initial apical file in maxillary lateral incisors. Forty human lateral incisors with complete root formation were used. After standard access cavities, a size 06 K-file was inserted into each canal until the apical foramen was reached. The WL (WL) was set 1 mm short of the apical foramen. Four groups (n=10) were formed at random, according to the type of cervical preflaring performed. Group 1 received the initial apical instrument without previous preflaring of the cervical and middle root

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Grob, J. A., and J. N. Owens. "Techniques to study the cell cycle in conifer shoot apical meristems." Canadian Journal of Forest Research 24, no. 3 (1994): 472–82. http://dx.doi.org/10.1139/x94-064.

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A method is presented to determine the mitotic index of conifer shoot apical meristems in a rapid and standardized manner using permanent Feulgen-stained squash preparations observed with a series of horizontal scans at fixed vertical intervals. Interpretation and application of mitotic index and its relationship to the cell cycle are discussed. Methods used to label nuclei within conifer apical meristems with tritiated thymidine and procedures that may improve incorporation of label and decrease cellular damage are discussed. The percentage of cells in S stage was determined using autoradiogr

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Manwar, Narendra, Sumeet Darda, and D. D. Shori. "An In Vivo Evaluation of Two Types of Files used to Accurately Determine the Diameter of the Apical Constriction of a Root Canal: An In Vivo Study." Journal of Contemporary Dental Practice 10, no. 4 (2009): 43–50. http://dx.doi.org/10.5005/jcdp-10-4-43.

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Abstract Aim The aim of this study was to compare sizes of the first instrument with or without a taper that binds at the apical constriction of a root canal after coronal flaring. Methods and Materials A total of 310 canals were evaluated in patients presenting for root canal therapy. Canals with intact apices were selected. After gaining straight line endodontic access, the coronal third was flared using Gates-Glidden drills. Working length was determined using an apex locator. ISO Standard K-files (tapered) were passively introduced into the canals starting with a No. 15 file. The first K-f

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Barrington, Rupert. "The influence of artificial selection on wing spot sizes, and the relationship between forewing and hindwing spots in the Meadow Brown Butterfly Maniola jurtina (Linnaeus, 1758), ssp. cassiteridum Graves, 1930 ab. anticrassipuncta Leeds, 1950 (Lepidoptera: Nymphalidae, Satyrinae)." Entomologist's Gazette 72, no. 3 (2021): 163–72. http://dx.doi.org/10.31184/g00138894.723.1796.

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Four generations of butterflies were reared from two female Maniola jurtina (Linnaeus, 1758) with enlarged apical spots (ab. anticrassipuncta Leeds, 1950) captured on St Mary's, Isles of Scilly, UK in 2013. The aim was to see how far this character could be developed through inbreeding. Previous work by Brakefield & van Noordwijk (1985) has looked at the relationship between forewing and hindwing spotting. The specimens retained from this experiment offered an opportunity to assess the correlation between the forewing spot size, additional forewing spots and hindwing spot size and number.

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Alzahrani, Omar, and Faisal Alghamdi. "Nonsurgical Management of Apical Root Perforation Using Mineral Trioxide Aggregate." Case Reports in Dentistry 2021 (March 24, 2021): 1–5. http://dx.doi.org/10.1155/2021/5583909.

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This study illustrates a conservative approach to nonsurgical management of apical root perforation in maxillary first molars. A patient was referred for retreatment of a maxillary left first molar. Her chief complaint was dull pain while biting in her maxillary left first molar. Periapical radiography showed radiolucency related to the mesiobuccal root and overextended gutta-percha through a perforation in the apical part of the distobuccal root. A CBCT scan was acquired and revealed the location and size of the apical perforation. The clinical examination showed that the tooth has been endod

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Bona, C. M., I. R. Biasetto, M. Masetto, C. Deschamps, and L. A. Biasi. "Influence of cutting type and size on rooting of Lavandula dentata L." Revista Brasileira de Plantas Medicinais 14, no. 1 (2012): 8–11. http://dx.doi.org/10.1590/s1516-05722012000100002.

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Even though the Lavandula species may be propagated by seeds, it should not be the preferred propagation method because it causes a great lack of uniformity. On the other hand, asexually propagated lavender crops would provide more homogeneous crops, and clones from high quality plant material would increase the odds for obtaining a higher quality essential oil. However, problems such as poor rooting and restrict market availability for superior clones have been a problem in vegetative propagation of the Lavandula species. The objective of this work was to define which type and size of cutting

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Kleindienst, David, Jacqueline Montanaro, Pradeep Bhandari, Matthew J. Case, Yugo Fukazawa, and Ryuichi Shigemoto. "Deep Learning-Assisted High-Throughput Analysis of Freeze-Fracture Replica Images Applied to Glutamate Receptors and Calcium Channels at Hippocampal Synapses." International Journal of Molecular Sciences 21, no. 18 (2020): 6737. http://dx.doi.org/10.3390/ijms21186737.

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The molecular anatomy of synapses defines their characteristics in transmission and plasticity. Precise measurements of the number and distribution of synaptic proteins are important for our understanding of synapse heterogeneity within and between brain regions. Freeze–fracture replica immunogold electron microscopy enables us to analyze them quantitatively on a two-dimensional membrane surface. Here, we introduce Darea software, which utilizes deep learning for analysis of replica images and demonstrate its usefulness for quick measurements of the pre- and postsynaptic areas, density and dis

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Abeysundara, Namal, Andrew J. Simmonds, and Sarah C. Hughes. "Moesin is involved in polarity maintenance and cortical remodeling during asymmetric cell division." Molecular Biology of the Cell 29, no. 4 (2018): 419–34. http://dx.doi.org/10.1091/mbc.e17-05-0294.

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An intact actomyosin network is essential for anchoring polarity proteins to the cell cortex and maintaining cell size asymmetry during asymmetric cell division of Drosophila neuroblasts (NBs). However, the mechanisms that control changes in actomyosin dynamics during asymmetric cell division remain unclear. We find that the actin-binding protein, Moesin, is essential for NB proliferation and mitotic progression in the developing brain. During metaphase, phosphorylated Moesin (p-Moesin) is enriched at the apical cortex, and loss of Moesin leads to defects in apical polarity maintenance and cor

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Running, M. P., J. C. Fletcher, and E. M. Meyerowitz. "The WIGGUM gene is required for proper regulation of floral meristem size in Arabidopsis." Development 125, no. 14 (1998): 2545–53. http://dx.doi.org/10.1242/dev.125.14.2545.

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The study of cell division control within developing tissues is central to understanding the processes of pattern formation. The floral meristem of angiosperms gives rise to floral organs in a particular number and pattern. Despite its critical role, little is known about how cell division is controlled in the floral meristem, and few genes involved have been identified. We describe the phenotypic effects of mutations in WIGGUM, a gene required for control of cell proliferation in the floral and apical meristem of Arabidopsis thaliana. wiggum flowers contain more organs, especially sepals and

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Nemes, A., Z. Kovács, Á. Kormányos, et al. "Left ventricular apical rotation is associated with mitral annular function in healthy subjects. Results from the three-dimensional speckle-tracking echocardiographic MAGYAR-Healthy Study." Physiology International 107, no. 1 (2020): 145–54. http://dx.doi.org/10.1556/2060.2020.00002.

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AbstractIntroductionLeft ventricular (LV) twist is considered an essential part of LV function due to oppositely directed LV basal and apical rotations. Several factors could play a role in determining LV rotational mechanics in normal circumstances. This study aimed to investigate the relationship between LV rotational mechanics and mitral annular (MA) size and function in healthy subjects.MethodsThe study comprised 118 healthy adult volunteers (mean age: 31.5 ± 11.8 years, 50 males). All subjects had undergone complete two-dimensional (2D) Doppler echocardiography and three-dimensional speck

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Mayberg, Marc R., and Lindsay Symon. "Meningiomas of the clivus and apical petrous bone." Journal of Neurosurgery 65, no. 2 (1986): 160–67. http://dx.doi.org/10.3171/jns.1986.65.2.0160.

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✓ Between March, 1966, and June, 1985, 23 women and 12 men underwent partial or total resection of apical petrous or clivus meningiomas at The National Hospital for Nervous Diseases. Presenting symptoms were typically of long duration (mean 29 months) and consisted primarily of gait disturbance, headache, hearing loss, and facial pain. Cranial nerve deficits, especially affecting the fifth, seventh, and eighth nerves, were observed in nearly every patient. Tumor size, but not location, was generally associated with degree of preoperative disability. Plain skull films were usually unremarkable,

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Xie, Shicong, Frank M. Mason та Adam C. Martin. "Loss of Gα12/13 exacerbates apical area dependence of actomyosin contractility". Molecular Biology of the Cell 27, № 22 (2016): 3526–36. http://dx.doi.org/10.1091/mbc.e16-05-0305.

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During development, coordinated cell shape changes alter tissue shape. In the Drosophila ventral furrow and other epithelia, apical constriction of hundreds of epithelial cells folds the tissue. Genes in the Gα12/13 pathway coordinate collective apical constriction, but the mechanism of coordination is poorly understood. Coupling live-cell imaging with a computational approach to identify contractile events, we discovered that differences in constriction behavior are biased by initial cell shape. Disrupting Gα12/13 exacerbates this relationship. Larger apical area is associated with delayed in

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Weiger, Roland, Tibor Bartha, Matthias Kalwitzki, and Claus Löst. "A clinical method to determine the optimal apical preparation size. Part I." Oral Surgery, Oral Medicine, Oral Pathology, Oral Radiology, and Endodontology 102, no. 5 (2006): 686–91. http://dx.doi.org/10.1016/j.tripleo.2005.10.058.

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Hwang, Ho-Keel, Chan-Ho Park, and Seong-Chul Bae. "The analysis of initial apical file size before and after coronal flaring." Journal of Korean Academy of Conservative Dentistry 28, no. 1 (2003): 64. http://dx.doi.org/10.5395/jkacd.2003.28.1.064.

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Hill, A. M., E. Yook, B. Smith, and R. N. Pauls. "59: Associating genital hiatus size with long-term outcomes after apical suspension." American Journal of Obstetrics and Gynecology 220, no. 3 (2019): S746—S747. http://dx.doi.org/10.1016/j.ajog.2019.01.089.

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Tong, Xiangyan, and Matthew Buechner. "CRIP homologues maintain apical cytoskeleton to regulate tubule size in C. elegans." Developmental Biology 317, no. 1 (2008): 225–33. http://dx.doi.org/10.1016/j.ydbio.2008.02.040.

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Chandran, Rachana R., Aaron Scholl, Yuyang Yang, and Lan Jiang. "rebuff regulates apical luminal matrix to control tube size in Drosophila trachea." Biology Open 7, no. 9 (2018): bio036848. http://dx.doi.org/10.1242/bio.036848.

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Tan, B. T., and H. H. Messer. "The effect of instrument type and preflaring on apical file size determination." International Endodontic Journal 35, no. 9 (2002): 752–58. http://dx.doi.org/10.1046/j.1365-2591.2002.00562.x.

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Souza, Ronaldo Araújo, José Antônio Poli Figueiredo, Suely Colombo, João da Costa Pinto Dantas, Maurício Lago, and Jesus Djalma Pé. "Location of the apical foramen and its relationship with foraminal file size." Dental Press Endodontics 1, no. 1 (2011): 64–68. http://dx.doi.org/10.14436/2178-3713.1.1.064-068.oar.

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Nelson, Kevin S., Zia Khan, Imre Molnár, József Mihály, Matthias Kaschube, and Greg J. Beitel. "Drosophila Src regulates anisotropic apical surface growth to control epithelial tube size." Nature Cell Biology 14, no. 5 (2012): 518–25. http://dx.doi.org/10.1038/ncb2467.

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Zhang, Wen Jie, Li Ming Zhai, Hai Xia Yu, et al. "The BIG gene controls size of shoot apical meristems in Arabidopsis thaliana." Plant Cell Reports 39, no. 4 (2020): 543–52. http://dx.doi.org/10.1007/s00299-020-02510-6.

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Connell, Marisa, Clemens Cabernard, Derek Ricketson, Chris Q. Doe, and Kenneth E. Prehoda. "Asymmetric cortical extension shifts cleavage furrow position in Drosophila neuroblasts." Molecular Biology of the Cell 22, no. 22 (2011): 4220–26. http://dx.doi.org/10.1091/mbc.e11-02-0173.

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The cytokinetic cleavage furrow is typically positioned symmetrically relative to the cortical cell boundaries, but it can also be asymmetric. The mechanisms that control furrow site specification have been intensively studied, but how polar cortex movements influence ultimate furrow position remains poorly understood. We measured the position of the apical and the basal cortex in asymmetrically dividing Drosophila neuroblasts and observed preferential displacement of the apical cortex that becomes the larger daughter cell during anaphase, effectively shifting the cleavage furrow toward the sm

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Rodrigues, Renata Costa Val, Homan Zandi, Anne Karin Kristoffersen, et al. "Influence of the Apical Preparation Size and the Irrigant Type on Bacterial Reduction in Root Canal–treated Teeth with Apical Periodontitis." Journal of Endodontics 43, no. 7 (2017): 1058–63. http://dx.doi.org/10.1016/j.joen.2017.02.004.

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Gesi, Andrea, Paolo Mareschi, Tiziana Doldo, and Marco Ferrari. "Apical Dimension of Root Canal Clinically Assessed with and without Periapical Lesions." International Journal of Dentistry 2014 (2014): 1–4. http://dx.doi.org/10.1155/2014/374971.

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To clinically evaluate the dimension of the more apical extent of the root canal after appropriate preflaring in the case of primary treatment and retreatment with and without the presence of periapical radiolucency, 392 single-rooted teeth with only one canal were evaluated during endodontic therapy. The canals were divided in two groups depending on the presence or absence of periapical radiolucency. After preflaring of the root canal the size of the root canal terminus (apical canal dimension) was gauged with hand-held Light Speed LS1 files inserted at the estimated working length and estab

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