1,154 research outputs found
Upper lip shortening combined with Lefort 1 maxillary intrusion: A novel approach to correct the long face syndrome
No full textLip lengthening is a common characteristic of aging caused by the weakening of the fascial attachments and decrease of lip volume. We report a comprehensive combined plastic-orthognathic surgery of a long face syndrome uncharacteristically associated with a long upper lip in a 37-year-old Caucasian woman. The deformity comprised increased lower face height, vertical maxillary excess, and increased gingival display upon smiling. The long lip (30.7 mm; norm, 20.1+2 mm) constituted a limitation to the routine maxillary Lefort impaction because of the expected deficient display of maxillary teeth at rest and during smile. Lip shortening (5 mm) through a crescent flap was combined with maxillary impaction (6 mm), mandibular advancement (8 mm), and genioplasty (8 mm). Post-treatment results revealed normal relations between the upper lip and both the lower facial features and the dentition, at rest and during smile. Research should explore the predictability of the observed hard and soft tissue changes in similar dysmorphologies. Level of Evidence: Level V, therapeutic study. © 2013 Springer-Verlag
The Benefits of Consulting with an Ear, Nose, and Throat (Ent) Specialist Before and During Orthodontic Treatment
No full text[No abstract available]
Correspondence between subjective and linear measurements of the palatal airway on lateral cephalometric radiographs
No full textObjective: To evaluate the correlation between and significance of 2 methods of palatal airway assessment on lateral cephalographs. Design: Diagnostic lateral cephalometric imaging study that took place from January 1, 2006, to December 31, 2007. Setting: American University of Beirut Medical Center. Patients: Children with chronic mouth breathing referred by a pediatric otolaryngologist for cephalometric evaluation by participating orthodontists. Main Outcome Measures: Two distances were measured on the digitized lateral cephalographs between the adenoid and soft palate: the shortest adenoid distance (SAD) and the most convex adenoid distance (CAD). The palatal airway was assessed on a grade-1 to grade-3 scale independently by the referring otolaryngologist and an orthodontist. Results: Atotal of 200 children were included in the study (127 boys and 73 girls; mean age, 6 years; age range, 1.71-12.62 years). High correlations were observed between the airway ratings gathered by both examiners (r = 0.96) and between SAD and CAD (r = 0.92). Significant correlations were noted between the palatal airway grade and the SAD and CAD measurements (r = -0.73 and r = -0.79, respectively). Shortest adenoid distance measures of 2mmor less corresponded mostly to grade 3 obstruction and were more prevalent in patients younger than 6 years. Age was inversely proportional to both the grade and SAD (P.001). Conclusions: Both methods are reliable for assessment of airway obstruction by the adenoid. Because SAD and CADare highly correlated, we recommend the use of SAD as a more readily identifiable distance on cephalometric radiographs. Removal of adenoids when SAD is less than 2 mm may be indicated because this condition reflects a severe airway obstruction associated with potential changes in dentofacial structure. ©2010 American Medical Association. All rights reserved.Angle EH., 1907, TREATMENT MALOCCLUSI; Chidiac J J, 2002, Orthod Craniofac Res, V5, P104, DOI 10.1034-j.1600-0544.2002.01170.x; DIAMOND O, 1980, AM J ORTHOD DENTOFAC, V78, P495, DOI 10.1016-0002-9416(80)90300-0; Faria Patrícia Toledo Monteiro, 2002, Braz Dent J, V13, P129, DOI 10.1590-S0103-64402002000200010; KERR WJS, 1989, ANGLE ORTHOD, V59, P91; King E., 1952, ANGLE ORTHOD, V22, P23; Linder-Aronson S, 1970, Acta Otolaryngol Suppl, V265, P1; LINDERARONSON S, 1993, AM J ORTHOD DENTOFAC, V103, P412, DOI 10.1016-S0889-5406(05)81792-5; LINDERARONSON S, 1983, EUR J ORTHODONT, V5, P47; LINDERARONSON S, 1986, AM J ORTHOD DENTOFAC, V89, P273, DOI 10.1016-0002-9416(86)90049-7; Macari A. T., 2006, J LEBANESE DENT ASS, V43, P29; Mattar Sara Elisa M, 2004, J Clin Pediatr Dent, V28, P315; MOORREES CFA, 1985, INTRO RADIOGRAPHIC C, P84; Oulis C J, 1994, J Clin Pediatr Dent, V18, P197; PROFFIT WR, 2000, CONT ORTHODONTICS, P137; PRUZANSKY S, 1975, ANN OTO RHINOL LARYN, V84, P55; SUBTELNY J D, 1956, Plast Reconstr Surg (1946), V17, P235, DOI 10.1097-00006534-195603000-00008; Valera FCP, 2003, INT J PEDIATR OTORHI, V67, P761, DOI 10.1016-S0165-5876(03)00095-8; WOODSIDE DG, 1991, AM J ORTHOD DENTOFAC, V100, P1, DOI 10.1016-0889-5406(91)70044-W64
Deep bite: Treatment options and challenges
No full textWhile deep overbite typically accompanies all classes of malocclusion, it is singled out in this article as the prominent component of malocclusion. We review the evidence-based treatment of deep overbite, mostly of lower tier on the evidence hierarchy. Accordingly, challenges to treatment emerge with the lack of firm guidelines for treatment. The main concerns relate to long-term stability and facial esthetics. Treatment options in children focus on possibilities of growth modification and avoidance of more severe development of the condition. Camouflage, surgical options, and compromised outcome are considered in the non-growing patient. We illustrate the various treatment strategies, including maxillary incisor esthetic differential extrusion, along with the side effects that may occur and ways to avoid them. The need for structured controlled trials and associated formulation of guidelines is demonstrated. © 2013 Elsevier Inc.Al-Buraiki H, 2005, AM J ORTHOD DENTOFAC, V127, P47, DOI 10.1016-j.ajodo.2003.10.034; Al-Farra E, 2001, AM J ORTHOD DENTOFAC, V120, P427, DOI 10.1067-mod.2001.117910; Baccetti T, 2012, AM J ORTHOD DENTOFAC, V142, P75, DOI 10.1016-j.ajodo.2012.02.024; BALL JV, 1991, EUR J ORTHODONT, V13, P53; Beane R A Jr, 1999, Semin Orthod, V5, P275, DOI 10.1016-S1073-8746(99)80021-8; BEGG PR, 1977, AM J ORTHOD DENTOFAC, V71, P1, DOI 10.1016-0002-9416(77)90175-0; Betzenberger D, 1999, ANGLE ORTHOD, V69, P27; BINDA SKR, 1994, EUR J ORTHODONT, V16, P301; Boom HPW, 2008, ARCH ORAL BIOL, V53, P273, DOI 10.1016-j.archoralbio.2007.08.013; Burstone CJ, 1995, MODERN EDGEWISE MECH, P33; Burzin J, 1993, RETENTION STABILITY, P61; Buschang PH, 2002, SEMIN ORTHOD, V8, P130, DOI 10.1053-sodo.2002.125432; CANGIALOSI TJ, 1984, AM J ORTHOD DENTOFAC, V85, P28, DOI 10.1016-0002-9416(84)90120-9; Chang YI, 1999, AM J ORTHOD DENTOFAC, V115, P29, DOI 10.1016-S0889-5406(99)70313-6; Cozza P, 2005, ANGLE ORTHOD, V75, P707; Dahl B L, 1975, J Oral Rehabil, V2, P209, DOI 10.1111-j.1365-2842.1975.tb00914.x; Devreese H, 2007, EUR J ORTHODONT, V29, P314, DOI 10.1093-ejo-cjm011; Franchi L, 2011, ANGLE ORTHOD, V81, P945, DOI 10.2319-033011-229.1; Ghafari J, 1998, BIOL MECH TOOTH ERUP, P8589; Ghafari J, 1995, BIOL MECH TOOTH ERUP, P545; Ghafari JG, 2011, EVIDENCE-BASED ORTHODONTICS, P247; Ghafari JG, 2012, CONT RESTORATION END, P115; Greig D G, 1983, Br J Orthod, V10, P214; HANS MG, 1994, ANGLE ORTHOD, V64, P265; Harrison JE, 2007, COCHRANE DB SYST REV, V18; Hartsfield Jr JK, 2011, ORTHODONTICS CURRENT, P139; Hering K, 1999, ANGLE ORTHOD, V69, P470; JANSON GRP, 1994, AM J ORTHOD DENTOFAC, V106, P409, DOI 10.1016-S0889-5406(94)70063-X; Kikuchi M, 2002, PSYCHIAT CLIN NEUROS, V56, P329, DOI 10.1046-j.1440-1819.2002.01002.x; KIM YH, 1987, ANGLE ORTHOD, V57, P290; MCFADDEN WM, 1989, AM J ORTHOD DENTOFAC, V96, P390, DOI 10.1016-0889-5406(89)90323-5; MELSEN B, 1989, AM J ORTHOD DENTOFAC, V96, P232, DOI 10.1016-0889-5406(89)90460-5; MELSEN B, 1988, AM J ORTHOD DENTOFAC, V94, P104, DOI 10.1016-0889-5406(88)90358-7; Millett DT, 2012, AM J ORTHOD DENTOFAC, V142, P159, DOI 10.1016-j.ajodo.2012.03.022; MOORREES CF, 1969, AMER J ORTHODONTICS, V55, P600, DOI 10.1016-0002-9416(69)90037-2; Nasry HA, 2006, BRIT DENT J, V200, P557, DOI 10.1038-sj.bdj.4813587; Ng J, 2005, AM J ORTHOD DENTOFAC, V128, P212, DOI 10.1016-j.ajodo.2004.04.025; Noroozi Hassan, 2002, Int J Adult Orthodon Orthognath Surg, V17, P47; Ohnishi H, 2005, ANGLE ORTHOD, V75, P444; OTTO RL, 1980, AM J ORTHOD DENTOFAC, V77, P437, DOI 10.1016-0002-9416(80)90108-6; PARKER CD, 1995, AM J ORTHOD DENTOFAC, V107, P382, DOI 10.1016-S0889-5406(95)70091-9; Polat-Ozsoy O, 2011, AM J ORTHOD DENTOFAC, V139, P526, DOI 10.1016-j.ajodo.2009.05.040; Proffit William R, 2007, Head Face Med, V3, P21, DOI 10.1186-1746-160X-3-21; Ricketts R M, 1972, Proc Found Orthod Res, P120; Sankey WL, 2000, AM J ORTHOD DENTOFAC, V118, P317, DOI 10.1067-mod.2000.106068; Shroff B, 1997, ANGLE ORTHOD, V67, P455; SIMONS ME, 1973, AM J ORTHOD DENTOFAC, V64, P349, DOI 10.1016-0002-9416(73)90243-1; Stellzig A, 1999, J Orofac Orthop, V60, P39, DOI 10.1007-BF01358714; Upadhyay M, 2008, AM J ORTHOD DENTOFAC, V134, P18, DOI 10.1016-j.ajodo.2007.03.025; van Steenbergen E, 2005, ANGLE ORTHOD, V75, P730; Weiland FJ, 1996, AM J ORTHOD DENTOFAC, V110, P647, DOI 10.1016-S0889-5406(96)80042-4; WORMS FW, 1971, AMER J ORTHODONTICS, V59, P589, DOI 10.1016-0002-9416(71)90005-41
Toponymical lexics in the pre-war period of A.T. Tvardovskiy’s creative work
No full textThe pre-war period (1926-1940) of A.T. Tvaedovskiy’s creative work, the great poet of the 20yh century, born in the Smolensk Region, is a period of his rising as an insuperable master of word, a people’s tribune, the time when the main traits of his poetry were developed and when his formation as a founder of the Smolensk Poetic School occurred. One of the central themes of the SPS poets, and first of all, A.T. Tvardovskiy himself, was the theme of “the minor” and “the big”. Motherland, which was materialized in significant motives through a system of toponyms. i.e. the names of geograpphical places. The article analyzes a system of macro- and mictrotoponyms and demonstrates their part in revealing of the thematical content of numerous pre-war poems (A Trip to Zagorye, 1939, Station Pochinok, 1936, and others), as well the first epical poem of the author Strana Muraviya (1936)
Efficient implementation of the domain-integrated field relations method for quasi-static magnetic fields
No full textAuthor accepted manuscript of the 17th Annual Review of Progress in Applied Computational Electromagnetics, Monterey, pp. 337-344, 19 Mar 2001 → 23 Mar 2001Electrical Engineering, Mathematics and Computer Scienc
Kinetics of epoxy-asphalt oxidation
No full textIn-depth understanding of the temperature effect on oxidative aging in epoxy-asphalt blends is needed to enable accurate predictions on material response through their service life. Details of the significance of developing prediction models and tools on oxidative aging of pavement materials are presented in a companion paper (Apostolidis et al., Oxidation Simulation of Thin Bitumen Film. AM3P). In this research, the chemical compositional changes of epoxy modified asphalt binders, with and without filler, were analysed after oven-conditioning by means of Fourier transform infrared (FTIR) spectroscopy. With the carbonyl and sulfoxide compounds as aging indices, the sensitivity of chemical compositional changes of bituminous and epoxy-based systems due to the applied temperatures was observed.Accepted Author ManuscriptPavement Engineerin
Constraint Propagation and Reverse Multi-Agent Learning
No full textThe development of multi-agent reinforcement learning has been largely driven by the question of how to design learning algorithms to reach some particular notion of optimality of strategies, e.g. Nash equilibria. The set of optimal strategies is not known before the execution of the learning algorithm,however we can often immediately identify a set of clearly undesirable outcomes. Therefore, we propose to consider a dual problem: given a collection of agent algorithms and a collection of unwanted strategy profiles, can one identify a setof starting strategies that invariably lead there? This leads us to study the algorithmic problem of backpropagation of con-straints defining the forbidden region by learning dynamics,through the lens of set-valued maps and interval arithmetics.Accepted author manuscriptInteractive Intelligenc
Signal Integrity in Pulse-train Excited Array Antennas in Time and Space - A Full TD Analysis
No full textSignal integrity in the far-field radiation from pulse-train excited array antennas is studied via full timedomain instruments. The disturbance in the received signal is related to the fidelity factor. At any point in our analysis, the disturbance is evaluated based on a reduced, well defined set of parameters: pulse parameters and pulse repetition rate – temporal dependence, and elementary radiator location – spatial dependence. Their effect is examined by means of illustrative numerical experiments. These results are expedient for enhancing the detectability of the signals radiated by pulse-train excited array antennas, as needed in wireless digital transfer.Accepted author manuscriptEEMS - GeneralTera-Hertz Sensin
Wavefields and reciprocity: Proceedings of a symposium held in honour of Professor dr. A.T. de Hoop, November 20-21, 1996, Delft, the Netherlands
No full textElectrical Engineering, Mathematics and Computer Scienc
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