当前位置： SCI文献检索 > EUROPEAN JOURNAL OF ORTHODONTICS期刊下所有文献 > An investigation into the mechanical characteristics of select self-ligated brackets at a series of clinically relevant maximum torquing angles: loading and unloading curves and bracket deformation.

An investigation into the mechanical characteristics of select self-ligated brackets at a series of clinically relevant maximum torquing angles: loading and unloading curves and bracket deformation.

Abstract：

:Edgewise orthodontic treatment utilizes a force couple in order to achieve labial-lingual tooth angulation. Two self-ligating brackets (Damon Q and Speed) were examined across a range of clinically relevant torques in order to assess the loading and unloading curves and bracket deformation. A previously developed torquing and load measurement system was utilized to rotate a 0.199 × 0.25 in stainless steel wire in a fixed bracket slot to the following angles: 16, 20, 24, 28, 32, and 40 degrees. The torque on the bracket was measured during both wire loading and unloading cycles. The torque play for the Damon brackets was determined to increase by less than 0.4 degrees when torqued to 70 Nmm, whereas the increase for the Speed brackets was 2.1 degrees at the same torque magnitude. The deformation curves for the Damon and Speed brackets were found to be different for loading and unloading. Speed brackets were found to start to plastically deform when torqued to 24 degrees (26 Nmm of torque), while Damon brackets did not plastically deform until 28 degrees (38 Nmm of torque). Damon brackets were found not to plastically deform as easily and to have a smaller increase in torque play than Speed brackets. Both the Damon and the Speed brackets demonstrated minimal effect of plastic deformation and torque play at maximum angles of twist less than 20 degrees. Torque measured in the brackets was different for loading and unloading.

journal_name

Eur J Orthod

journal_title

European journal of orthodontics

authors

Major TW,Carey JP,Nobes DS,Heo G,Melenka GW,Major PW

doi

10.1093/ejo/cjr076

subject

Has Abstract

pub_date

2013-12-01 00:00:00

pages

719-29

issue

6

eissn

0141-5387

issn

1460-2210

pii

cjr076

journal_volume

35

pub_type

杂志文章

相关文献

EUROPEAN JOURNAL OF ORTHODONTICS文献大全
  • Unilateral molar distalization with a modified slider.

    abstract：:Although there are numerous publications on bilateral non-compliance molar distalization appliances, there is limited information on problems such as asymmetrical unilateral Class II malocclusions. The aim of the present investigation was to examine the distalization of molars unilaterally in patients with a unilatera...

    journal_title：European journal of orthodontics

    pub_type： 杂志文章

    doi：10.1093/ejo/cji118

    authors： Sayinsu K,Isik F,Allaf F,Arun T

    更新日期：2006-08-01 00:00:00

  • Effects of surface-conditioning methods on shear bond strength of brackets bonded to different all-ceramic materials.

    abstract：:The aims of this study were to investigate the effects of two surface-conditioning methods on the shear bond strength (SBS) of metal brackets bonded to three different all-ceramic materials, and to evaluate the mode of failure after debonding. Twenty feldspathic, 20 fluoro-apatite, and 20 leucite-reinforced ceramic sp...

    journal_title：European journal of orthodontics

    pub_type： 杂志文章,随机对照试验

    doi：10.1093/ejo/cjq132

    authors： Saraç YŞ,Külünk T,Elekdağ-Türk S,Saraç D,Türk T

    更新日期：2011-12-01 00:00:00

  • The impact of premature birth on the permanent tooth size of incisors and first molars.

    abstract：Background:Scientific evidence is insufficient to answer the question of whether premature birth causes altered tooth-crown dimensions. Objective:To evaluate permanent tooth-crown dimensions in prematurely born children and to compare the findings with full-term born controls. Subjects and Methods:Preterm children of...

    journal_title：European journal of orthodontics

    pub_type： 杂志文章

    doi：10.1093/ejo/cjx021

    authors： Ebrahim E,Paulsson L

    更新日期：2017-11-30 00:00:00

  • Growth changes in the cranial base and the face: a longitudinal cephalometric study of linear and angular changes in adult Norwegians.

    abstract：:The purpose of this study was to examine the natural growth changes which occur between 22 and 33 years of age. The material consisted of two series of cephalograms of 74 females and 90 males with approximately 11 years between the two series. None of the subjects had orthodontic retainers when the first exposure was ...

    journal_title：European journal of orthodontics

    pub_type： 杂志文章

    doi：10.1093/ejo/17.6.525

    authors： Bondevik O

    更新日期：1995-12-01 00:00:00

  • Self-perception of malocclusion among north Jordanian school children.

    abstract：:This study was undertaken to assess the factors affecting self-perception and the demand for orthodontic treatment among north Jordanian school children. In total, 1404 students randomly selected to represent five geographical areas of northern Jordan were examined. The students were further subgrouped according to ge...

    journal_title：European journal of orthodontics

    pub_type： 杂志文章

    doi：10.1093/ejo/cjh094

    authors： Abu Alhaija ES,Al-Nimri KS,Al-Khateeb SN

    更新日期：2005-06-01 00:00:00

  • A cephalometric investigation of the effects of the Elastic Bite-block in the treatment of Class II division 1 malocclusions.

    abstract：:The purpose of this study was to investigate cephalometrically, the effects of a functional appliance-headgear combination, the Elastic Bite-block (EBB). Of 50 Class II division 1 subjects who participated in this study, 30 made up the treatment group and 20 the control group. All of the selected cases exhibited mandi...

    journal_title：European journal of orthodontics

    pub_type： 杂志文章

    doi：10.1093/ejo/17.5.375

    authors： Erverdi N,Ozkan G

    更新日期：1995-10-01 00:00:00

  • The integration of orthodontic miniscrews under mechanical loading: a pre-clinical study in rabbit.

    abstract：Introduction:Orthodontic miniscrews are an increasingly popular choice to achieve absolute anchorage. The temporary use of miniscrews and their recent introduction have limited the debate over the biological aspect of the materials to that of the surface that permeates the field of dental implants. The aim of the prese...

    journal_title：European journal of orthodontics

    pub_type： 杂志文章

    doi：10.1093/ejo/cjw069

    authors： Maino BG,Di Blasio A,Spadoni D,Ravanetti F,Galli C,Cacchioli A,Katsaros C,Gandolfini M

    更新日期：2017-10-01 00:00:00

  • Adaptive condylar growth and mandibular remodelling changes with bionator therapy--an implant study.

    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

    pub_type： 临床试验,杂志文章,随机对照试验

    doi：10.1093/ejo/26.5.515

    authors： Araujo AM,Buschang PH,Melo AC

    更新日期：2004-10-01 00:00:00

  • Reproducibility of the assessment of the Fränkel manoeuvre for the evaluation of sagittal skeletal discrepancies in Class II individuals.

    abstract：OBJECTIVES:The Fränkel manoeuvre is a procedure by which the mandible of Class II individuals is postured forward in dental Class I relationship. The evaluation of the resulting facial profile provides information concerning the components determining the sagittal discrepancy. Data concerning the reproducibility of its...

    journal_title：European journal of orthodontics

    pub_type： 杂志文章

    doi：10.1093/ejo/cjv072

    authors： Martina R,D'Antò V,Chiodini P,Casillo M,Galeotti A,Tagliaferri R,Michelotti A,Cioffi I

    更新日期：2016-08-01 00:00:00

  • Root resorption before and after orthodontic treatment: a clinical study of contributory factors.

    abstract：:This clinical study evaluated factors related to root resorption before (T1) and after (T2) orthodontic treatment. Ninety-six subjects between 9 and 34 years (34 males and 62 females) who had been treated using fixed appliances for at least 1 year and who had panoramic radiographs at T1 and T2 were selected. The relat...

    journal_title：European journal of orthodontics

    pub_type： 杂志文章

    doi：10.1093/ejo/cjp165

    authors： Jiang RP,McDonald JP,Fu MK

    更新日期：2010-12-01 00:00:00

  • Early orthodontic treatment and interceptive treatment strategies.

    abstract：:Orthodontics as health care is sometimes at odds with modern marketing with its strong focus on aesthetics. In this commentary, I highlight how important it is that research of orthodontic treatment as a value for the entire community is performed and published. ...

    journal_title：European journal of orthodontics

    pub_type： 评论,杂志文章

    doi：10.1093/ejo/cjs081

    authors： Lindsten R

    更新日期：2013-04-01 00:00:00

  • A dynamic analysis of the display of the dentition during speech.

    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

    pub_type： 杂志文章

    doi：10.1093/ejo/cjs084

    authors： Jacobson A,Upadhyay M,Nanda R

    更新日期：2013-10-01 00:00:00

  • Accuracy and reliability of cone-beam computed tomography for airway volume analysis.

    abstract：:The purpose of the present study was to evaluate the accuracy and reliability of airway volume digital measurements of cone-beam computed tomography (CBCT) compared with the manual measurements of an airway model. An acrylic airway model was constructed and attached to a human dry skull in the natural position of the ...

    journal_title：European journal of orthodontics

    pub_type： 杂志文章

    doi：10.1093/ejo/cjr099

    authors： Ghoneima A,Kula K

    更新日期：2013-04-01 00:00:00

  • Prevalence and distribution of permanent canine agenesis in dental paediatric and orthodontic patients in Hungary.

    abstract：:Non-syndromic permanent canine agenesis, or combined with agenesis, or developmental absence of other tooth types, has occasionally been described in the literature, but isolated forms are rarely observed. The purpose of the present retrospective radiographic study was to provide data on the prevalence and distributio...

    journal_title：European journal of orthodontics

    pub_type： 杂志文章

    doi：10.1093/ejo/cjp018

    authors： Rózsa N,Nagy K,Vajó Z,Gábris K,Soós A,Alberth M,Tarján I

    更新日期：2009-08-01 00:00:00

  • Corrosion of orthodontic temporary anchorage devices.

    abstract：:Corrosion of orthodontic miniscrews or temporary anchorage devices (TADs) has been proposed as a contributor to inflammation, which in turn is a factor in the clinical success of miniscrews. The purpose of this study was to measure the electrochemical properties of orthodontic miniscrews in artificial saliva with and ...

    journal_title：European journal of orthodontics

    pub_type： 杂志文章

    doi：10.1093/ejo/cjs027

    authors： Knutson KJ,Berzins DW

    更新日期：2013-08-01 00:00:00

  • White spot formation under orthodontic bands cemented with glass ionomer with or without Fluor Protector.

    abstract：:The purpose of this study was to determine whether an additional application of Fluor Protector before band cementation with glass ionomer cement reduces white spot formation compared with band cementation with glass ionomer cement. In the in vitro study, 80 premolars were divided in half, creating a control and a tes...

    journal_title：European journal of orthodontics

    pub_type： 临床试验,杂志文章,随机对照试验

    doi：10.1093/ejo/20.3.219

    authors： van der Linden RP,Dermaut LR

    更新日期：1998-06-01 00:00:00

  • An innovative adhesive procedure for connecting transpalatal arches with palatal implants.

    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

    pub_type： 杂志文章

    doi：10.1093/ejo/cji002

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

    更新日期：2005-06-01 00:00:00

  • A cost-minimization analysis of an RCT of three retention methods.

    abstract：BACKGROUND:There are few cost evaluation studies of orthodontic retention treatment. The aim of this study was to compare the costs in a randomized controlled trial of three retention methods during 2 years of retention treatment. MATERIALS/METHODS:To determine which alternative has the lower cost, a cost-minimization...

    journal_title：European journal of orthodontics

    pub_type： 杂志文章,随机对照试验

    doi：10.1093/ejo/cjt070

    authors： Tynelius GE,Lilja-Karlander E,Petrén S

    更新日期：2014-08-01 00:00:00

  • Expansion of maxillary arches with crossbite: a systematic review of RCTs in the last 12 years.

    abstract：:The aim of this study was to review recent randomized clinical trials (RCTs) dealing with the effectiveness of various modalities of orthopaedic/orthodontic expansion of maxillary arches with crossbite and the associated 6 month post retention stability. The study selection criteria included RCTs involving subjects wi...

    journal_title：European journal of orthodontics

    pub_type： 杂志文章,评审

    doi：10.1093/ejo/cjr140

    authors： Zuccati G,Casci S,Doldo T,Clauser C

    更新日期：2013-02-01 00:00:00

  • In vitro comparison of the retention capacity of new aesthetic brackets.

    abstract：:Tensile bond strength and bond failure location were evaluated in vitro for two types of aesthetic brackets (non-silanated ceramic, polycarbonate) and one stainless steel bracket, using bovine teeth as the substrate and diacrylate resin as the adhesive. The results show that metallic bracket had the highest bond stren...

    journal_title：European journal of orthodontics

    pub_type： 杂志文章

    doi：10.1093/ejo/21.1.71

    authors： Fernandez L,Canut JA

    更新日期：1999-02-01 00:00:00

  • A randomized clinical trial comparing the impact of different oral hygiene protocols and sealant applications on plaque, gingival, and caries index scores.

    abstract：OBJECTIVE:This prospective randomized clinical trial investigated the impact of different tooth brushing strategies and sealant application on patients with fixed appliances: plaque, gingival, caries index scores, periodontal parameters, microbial, and molecular biological parameters were assessed. MATERIALS AND METHO...

    journal_title：European journal of orthodontics

    pub_type： 杂志文章,随机对照试验

    doi：10.1093/ejo/cjt043

    authors： Zingler S,Pritsch M,Wrede DJ,Ludwig B,Bister D,Kneist S,Lux CJ

    更新日期：2014-04-01 00:00:00

  • The extent of enamel surface fractures. A quantitative comparison of thermally debonded ceramic and mechanically debonded metal brackets by energy dispersive micro- and image-analysis.

    abstract：:This clinical study investigated the practical value of two methods for debonding brackets attached by the adhesive Concise to acid-etched enamel surfaces. Forty-two Ultratrimm Standard metal brackets and 42 Fascination ceramic brackets were collected from juvenile patients undergoing orthodontic treatment. All metal ...

    journal_title：European journal of orthodontics

    pub_type： 杂志文章

    doi：10.1093/ejo/18.6.655

    authors： Stratmann U,Schaarschmidt K,Wegener H,Ehmer U

    更新日期：1996-12-01 00:00:00

  • Development of a 3D human osteoblast cell culture model for studying mechanobiology in orthodontics.

    abstract：OBJECTIVES:Mechanobiology phenomena constitute a major element of the cellular and tissue response during orthodontic treatment and the implantation of a biomaterial. Better understanding these phenomena will improve the effectiveness of our treatments. The objective of this work is to validate a model of three-dimensi...

    journal_title：European journal of orthodontics

    pub_type： 杂志文章

    doi：10.1093/ejo/cjaa017

    authors： Brezulier D,Pellen-Mussi P,Tricot-Doleux S,Novella A,Sorel O,Jeanne S

    更新日期：2020-09-11 00:00:00

  • Reduced masticatory function is related to lower satellite cell numbers in masseter muscle.

    abstract：:The physiology of masseter muscles is known to change in response to functional demands, but the effect on the satellite cell (SC) population is not known. In this study, the hypothesis is tested that a decreased functional demand of the masseter muscle causes a reduction of SCs. To this end, twelve 5-week-old male Sp...

    journal_title：European journal of orthodontics

    pub_type： 杂志文章

    doi：10.1093/ejo/cjs044

    authors： Kuijpers MA,Grefte S,Bronkhorst EM,Carels CE,Kiliaridis S,Von den Hoff JW

    更新日期：2014-06-01 00:00:00

  • The development of an index of orthodontic treatment priority.

    abstract：:The aim of this study was to develop a valid and reproducible index of orthodontic treatment priority. After reviewing the available literature, it was felt that this could be best achieved by using two separate components to record firstly the dental health and functional indications for treatment, and secondly the a...

    journal_title：European journal of orthodontics

    pub_type： 杂志文章

    doi：10.1093/oxfordjournals.ejo.a035999

    authors： Brook PH,Shaw WC

    更新日期：1989-08-01 00:00:00

  • The aesthetic analysis of the face.

    abstract：:An analysis of the facial soft tissues is presented which permits aesthetic considerations of facial harmony and balance to be measured, and assessed quantitatively. The assessment is carried out in a practical and straight-forward manner, avoiding the measurement of angles. The visually determined Aesthetic Horizonta...

    journal_title：European journal of orthodontics

    pub_type： 杂志文章

    doi：10.1093/ejo/13.5.343

    authors： Bass NM

    更新日期：1991-10-01 00:00:00

  • Smartphone application-assisted oral hygiene of orthodontic patients: a multicentre randomized controlled trial in adolescents.

    abstract：OBJECTIVE:The aim of this trial was to test whether the use of a smartphone application (app) connected to a toothbrush improves the oral hygiene compliance of adolescent orthodontic patients. DESIGN:The study was designed as a multicentre, randomized, controlled clinical trial. SETTING:Two academic hospitals. ETHIC...

    journal_title：European journal of orthodontics

    pub_type： 杂志文章

    doi：10.1093/ejo/cjz105

    authors： Deleuse M,Meiffren C,Bruwier A,Maes N,Le Gall M,Charavet C

    更新日期：2020-02-01 00:00:00

  • The propellant unilateral magnetic appliance (PUMA): a new technique for hemifacial microsomia.

    abstract：:A new appliance with samarium cobalt magnets embedded in unilateral blocks of acrylic is described, as a way of stimulating an autogenous costochondral graft, in a case with hemifacial microsomia. Laser scan images are used to illustrate a reversion towards facial soft tissue symmetry, over a 3-year period of treatmen...

    journal_title：European journal of orthodontics

    pub_type： 杂志文章

    doi：10.1093/ejo/17.4.263

    authors： Chate RA

    更新日期：1995-08-01 00:00:00

  • Bracket slot size selection: after all a matter of taste?

    abstract：:The publication of the three-paper series on the effects of two slot sizes on treatment parameters in this issue, targets a topic, which has attracted a lot of discussion based primarily on anecdotal evidence. The conclusive evidence contribute to the lack of variation of treatment variables with slot size selection, ...

    journal_title：European journal of orthodontics

    pub_type： 评论,杂志文章

    doi：10.1093/ejo/cjy051

    authors： Eliades T

    更新日期：2019-05-24 00:00:00

  • The effect of oral ipriflavone on the rat mandible during growth.

    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

    pub_type： 杂志文章

    doi：10.1093/ejo/cjh099

    authors： Maki K,Nishida I,Kimura M

    更新日期：2005-02-01 00:00:00