The quadhelix maxillary expansion appliance: Part I. Mechanics.

abstract：:This radiographic study analysed the changes that occurred in the airway and surrounding structures when subjects with sleep disordered breathing moved from the upright to the supine position. Radiographs of 100 dentate, Caucasian males were examined. Fifty individuals were non-apnoeic snorers and in 50 a diagnosis of...

journal_title：European journal of orthodontics

authors： Battagel JM,Johal A,Smith AM,Kotecha B

更新日期：2002-06-01 00:00:00

abstract：:As orthodontic appliances can corrode with time in the oral environment, the aim of this study was to compare the release of metal ions from new and recycled brackets immersed in buffers of different pH values over a 48 week period. To simulate commercial recycling, the stainless steel brackets were divided into two g...

journal_title：European journal of orthodontics

authors： Huang TH,Ding SJ,Min Y,Kao CT

更新日期：2004-04-01 00:00:00

abstract：:Tooth displacement was analysed on human autopsy material for various types of orthodontic force systems using an electronic strain gauge technique. Tooth movements were registered in two dimensions with low force clip gauges on three sections of the mandible, containing the first premolar and the first molar. The sen...

journal_title：European journal of orthodontics

authors： Pedersen E,Andersen K,Melsen B

更新日期：1991-02-01 00:00:00

abstract：:Cleidocranial dysplasia (CCD) is a rare, well-defined skeletal disorder with autosomal dominant inheritance and complete penetrance. Although it involves the whole skeletal system, the main clinical manifestations of CCD are malformations of the skull and clavicles, which lead to a typical appearance of the face and s...

journal_title：European journal of orthodontics

authors： Marchisella C,Rolando F,Muscarella LA,Zelante L,Bracco P,Piemontese MR

更新日期：2011-10-01 00:00:00

abstract：:It has been suggested that subjects with increased vertical craniofacial dimensions have relatively oblique orientated jaw muscles with a reduced possibility to restrain the vertical component of craniofacial growth. To test this hypothesis, relationships were investigated between the spatial orientation of the jaw mu...

journal_title：European journal of orthodontics

authors： van Spronsen PH,Koolstra JH,van Ginkel FC,Weijs WA,Valk J,Prahl-Andersen B

更新日期：1997-06-01 00:00:00

abstract：BACKGROUND:The Scandcleft trial is a randomized controlled trial that includes children with unilateral cleft lip and palate where registrations are standardized and therefore provides the opportunity to describe craniofacial characteristics in a very large sample of patients. OBJECTIVES:The aim of this study was to d...

journal_title：European journal of orthodontics

authors： Küseler A,Heliövaara A,Mølsted K,Marcusson A,Karsten A,Bellardie H,Sæle P,Brinck E,Skaare P,Rizell S,Chalien MN,Mooney J,Botticelli S,Eyres P,Shaw W,Semb G

更新日期：2020-12-24 00:00:00

abstract：:The location of the centre of resistance (CR) of various consolidated units of maxillary anterior teeth was determined in this study using human autopsy material. The units studied consisted of two central incisors, four incisors, and six anterior teeth. When horizontal forces were applied the CR for the two- and six-...

journal_title：European journal of orthodontics

authors： Pedersen E,Isidor F,Gjessing P,Andersen K

更新日期：1991-12-01 00:00:00

abstract：:Orthodontic treatment is mainly dependent on the loads developed by metal wires. The load developed by a buckled orthodontic wire is of great concern for molar distalization and cannot be simply derived from mechanical properties measured through classical tests (i.e. tensile, torsion, and bending). A novel testing me...

journal_title：European journal of orthodontics

authors： De Santis R,Dolci F,Laino A,Martina R,Ambrosio L,Nicolais L

更新日期：2008-04-01 00:00:00

abstract：:Deviations in the growth of the mandibular condyle can affect both the functional occlusion and the aesthetic appearance of the face. The reasons for these growth deviations are numerous and often entail complex sequences of malfunction at the cellular level. The aim of this review is to summarize recent progress in t...

journal_title：European journal of orthodontics

authors： Pirttiniemi P,Peltomäki T,Müller L,Luder HU

更新日期：2009-02-01 00:00:00

abstract：:Different types of ipriflavone (IF) have been reported to be effective when used as a remedy for bone loss due to osteoporosis. However, no information is available regarding the relationship between IF and jaw bone structure. The aim of this study was to examine the effect of IF on rat mandibles during the growth sta...

journal_title：European journal of orthodontics

authors： Maki K,Nishida I,Kimura M

更新日期：2005-02-01 00:00:00

abstract：:A number of investigations have looked at psychological changes occurring in association with orthognathic treatment. However, most of these studies have used a pre-surgery questionnaire as the baseline measurement. There is little data relating to the true baseline, i.e. that prior to any active treatment. Until this...

journal_title：European journal of orthodontics

authors： Cunningham SJ,Gilthorpe MS,Hunt NP

更新日期：2001-12-01 00:00:00

abstract：OBJECTIVES:During orthodontic arch expansion, the teeth are displaced against the perioral soft tissues. This can affect the equilibrium of forces that are thought to act on teeth, with consequent implications for long-term stability. The aim of this study was to investigate the effect of incremental lower lip advancem...

journal_title：European journal of orthodontics

authors： Jack HC,Kieser J,Antoun JS,Farella M

更新日期：2014-12-01 00:00:00

abstract：:Many animal experiments dealing with function-form interaction and mandibular condylar growth have utilized hyperpropulsion of the animal's mandible. Numerous hyperpropulsive appliances have been described in the literature. However, there are significant discrepancies between reported results which are most likely du...

journal_title：European journal of orthodontics

authors： Tsolakis AI,Spyropoulos MN

更新日期：1997-02-01 00:00:00

abstract：:Orthodontic torque expression is the result of axial rotation of rectangular archwires within a rectangular bracket slot. This study investigates the effect of bracket material on torque expression. Torque exerted by a rotating archwire on each bracket will be measured as well as the relative deformation of each brack...

journal_title：European journal of orthodontics

authors： Melenka GW,Lacoursiere RA,Carey JP,Nobes DS,Heo G,Major PW

更新日期：2014-08-01 00:00:00

abstract：:The aim of this prospective study was to quantify the display of the dentition through the soft tissue frame during speech using videography for different age groups. Two hundred and sixty-one subjects were initially screened and were divided into five groups: group 1 (G1) (15-19 years), G2 (20-29 years), G3 (30-39 ye...

journal_title：European journal of orthodontics

authors： Jacobson A,Upadhyay M,Nanda R

更新日期：2013-10-01 00:00:00

abstract：:Clinical outcomes in children born with a cleft lip and palate (CLP) have been an area of interest for orthodontists for a number of years. Whilst tools for measurement of these outcomes are available, there is no widely accepted measure of initial cleft severity and no known quantitative indices. Therefore, the poten...

journal_title：European journal of orthodontics

authors： Johnson N,Williams A,Singer S,Southall P,Sandy J

更新日期：2000-02-01 00:00:00

abstract：:To compare force levels obtained from glass fibre-reinforced composite (FRC) archwires. Specifically, FRC wires were compared with polymer matrices having different dimethacrylate monomer compositions. FRC material (E-glass provided by Stick Tech Ltd, Turku, Finland) with continuous unidirectional glass fibres and fou...

journal_title：European journal of orthodontics

authors： Ohtonen J,Vallittu PK,Lassila LV

更新日期：2013-02-01 00:00:00

abstract：:The aim of this in vitro study was to investigate both shear bond strength (SBS) by shear testing of indirectly bonded brackets, and the accuracy of a new transfer method, the Aptus bonding device (ABD). For comparison, the SBS of directly bonded brackets in two experimental arrangements was also measured. The precisi...

journal_title：European journal of orthodontics

authors： Wendl B,Droschl H,Muchitsch P

更新日期：2008-02-01 00:00:00

abstract：:Recent studies revealed that the initial root resorption occurred in the peripheries of the necrotic periodontal ligament (PDL) and was performed by mono-nucleated non-clast macrophage- and fibroblast-like cells (Brudvik and Rygh, 1993a, b). The aim of the present transmission electron microscopic (TEM) investigation ...

journal_title：European journal of orthodontics

authors： Brudvik P,Rygh P

更新日期：1994-08-01 00:00:00

abstract：:The age- and gender-related shape variations of the craniofacial skeleton in skeletal Class I children were quantified using a Fourier analysis on the pre-treatment lateral head films of 122 orthodontic patients (age range 7-15 years), who were subdivided into six groups for sex and age (2-year intervals). Seven landm...

journal_title：European journal of orthodontics

authors： Ferrario VF,Sforza C,Poggio CE,Colombo A,Cova M

更新日期：1997-12-01 00:00:00

abstract：:To study the effects of transforming growth factor beta 2 (TGF-beta 2) on bone resorption, cultures of 17-day-old foetal mouse metatarsal long bones were used. The long bone rudiments were cultured for 5 days in medium supplemented with 10% rat serum. The effects of TGF-beta 2 were studied at concentrations of 1, 4, a...

journal_title：European journal of orthodontics

authors： Berghuis HM,Dieudonné SC,Goei W,Veldhuijzen JP

更新日期：1994-04-01 00:00:00

abstract：:Mechanical stress induces human periodontal ligament (PDL) cells to express an osteoblastic phenotype in vitro. Core binding factor a1 (CBFA1) is a key regulator of osteoblast differentiation. This study was designed to investigate the role of CBFA1 in alveolar bone remodelling, specifically the expression of CBFA1 me...

journal_title：European journal of orthodontics

authors： Yang Y,Yang Y,Li X,Cui L,Fu M,Rabie AB,Zhang D

更新日期：2010-12-01 00:00:00

abstract：:Premature and low birth weight infants often require neonatal oral intubation for resuscitation and to relieve respiratory distress. The endotracheal tube exerts pressure on the developing palate, which can result in palatal groove formation, a high-arched palate, and palatal asymmetry. The purpose of this investigati...

journal_title：European journal of orthodontics

authors： Macey-Dare LV,Moles DR,Evans RD,Nixon F

更新日期：1999-12-01 00:00:00

abstract：:This study investigated the changes in the initial centres of rotation (Crot) of the upper six anterior teeth in response to a horizontal load. Six upper anterior teeth were extracted, splinted as a unit, and embedded in dental stone after the roots were uniformly coated with silicone. An aluminium fixture was bonded ...

journal_title：European journal of orthodontics

authors： Choy K,Kim KH,Burstone CJ

更新日期：2006-10-01 00:00:00

abstract：Background:Orthodontically induced external root resorption (OIRR) is a pathologic consequence of orthodontic tooth movement. However, the limitations of two-dimensional radiography suggest that cone beam computed tomography (CBCT) with its three-dimensional capabilities might be more suitable to assess OIRR. Objectiv...

journal_title：European journal of orthodontics

authors： Samandara A,Papageorgiou SN,Ioannidou-Marathiotou I,Kavvadia-Tsatala S,Papadopoulos MA

更新日期：2019-01-23 00:00:00

abstract：:The aim of this presentation is to describe an innovative adhesive procedure for connecting palatal implants with transpalatal arches (TPAs). The steps required for completing the procedure, the costs involved and the requisite time were reviewed and compared with those of two alternative procedures reported in the li...

journal_title：European journal of orthodontics

authors： Crismani AG,Bernhart T,Bantleon HP,Kucher G

更新日期：2005-06-01 00:00:00

abstract：AIM:To assess the risk of bias (RoB) in a subset of randomized controlled trials (RCTs) published in orthodontic journals using the Cochrane RoB tool and to identify associations between domain RoB assessment and treatment effect estimates. MATERIALS AND METHODS:Fifty consecutive issues of four major orthodontic journ...

journal_title：European journal of orthodontics

authors： Koletsi D,Spineli LM,Lempesi E,Pandis N

更新日期：2016-06-01 00:00:00

abstract：:Seven-hundred-and-ninety-one 15-year-olds were subjected to an anamnestic and clinical examination of craniomandibular disorders. These individuals had been examined at the age of 12 years and this is one section of an extensive longitudinal investigation into the effects of malocclusion, and the effectiveness of orth...

journal_title：European journal of orthodontics

authors： Pilley JR,Mohlin B,Shaw WC,Kingdon A

更新日期：1992-04-01 00:00:00

abstract：:The purpose of this study was to describe condylar growth and mandibular remodelling changes associated with bionator therapy. Twenty-five patients (15 males and 10 females) between 6.9 and 11.2 years of age with Class II division 1 malocclusions were randomly allocated to either control (n = 11) or treatment (n = 14;...

journal_title：European journal of orthodontics

authors： Araujo AM,Buschang PH,Melo AC

更新日期：2004-10-01 00:00:00

abstract：:Some Class II malocclusions are due, at least in part, to a retruded lower dental arch relative to the mandibular body. The purpose of this study was to determine if a direct anterior force on the lower incisors could lead to bodily movement of these teeth. Twenty-seven patients (9 males, 18 females; mean age: 9.8 yea...

journal_title：European journal of orthodontics

authors： Strahm C,De Sousa AP,Grobéty D,Mavropoulos A,Kiliaridis S

更新日期：2009-08-01 00:00:00