Abstract:
:The aim of this in vitro study was to compare the shear bond strength (SBS) and failure modes of a conventional resin-based composite with a recently developed amorphous calcium phosphate (ACP)-containing orthodontic composite system. Forty freshly extracted human maxillary premolar teeth were randomly divided into two equal groups. Conventional composite (group 1; Transbond-XT; 3M Unitek) and ACP-containing orthodontic composite (group 2; Aegis-Ortho; Harry J. Bosworth Co.) were used for bonding ceramic orthodontic brackets. The SBS of these brackets were measured and recorded in megapascals (MPa). Adhesive remnant index (ARI) scores were determined after bracket failure. Data were analysed with a Student's t-test for two independent variables and Pearson's chi-square tests. Statistical analysis showed that the bond strength of group 1 (mean: 36.7 +/- 6.8 MPa) was significantly higher than group 2 (mean: 24.2 +/- 5.4 MPa; P < 0.01). Although a greater percentage of the fractures were cohesive at the composite interface (Score 1 + Score 2 = 70 per cent in group 1 and 90 per cent in group 2), statistically significant differences were observed between the groups (P < 0.05). The ACP system is suitable for bonding ceramic orthodontic brackets due to the lower SBS values compared with conventional composite. The ACP-containing composite is recommended for use in clinical orthodontic practice in order to achieve lower decalcification scores under ceramic orthodontic brackets.
journal_name
Eur J Orthodjournal_title
European journal of orthodonticsauthors
Uysal T,Ustdal A,Nur M,Catalbas Bdoi
10.1093/ejo/cjp115subject
Has Abstractpub_date
2010-06-01 00:00:00pages
281-4issue
3eissn
0141-5387issn
1460-2210pii
cjp115journal_volume
32pub_type
杂志文章,随机对照试验abstract::The objective of this research was to investigate the effect of applying a sustained seating force during bonding on the adhesive layer and on shear bond strength (SBS) of orthodontic brackets. Forty human premolars divided into two groups were included in the study. Stainless steel brackets were bonded to the premola...
journal_title:European journal of orthodontics
pub_type: 杂志文章,随机对照试验
doi:10.1093/ejo/cjq096
更新日期:2011-08-01 00:00:00
abstract:OBJECTIVES:Loosening and loss rates of monocortical mini-implants are relatively high, therefore the following null hypothesis was tested: 'The local bone stress in mono and bicortically-anchored mini-implants is identical'. MATERIAL AND METHODS:Anisotropic Finite Element Method (FEM) models of the mandibular bone, in...
journal_title:European journal of orthodontics
pub_type: 杂志文章
doi:10.1093/ejo/cjt023
更新日期:2014-10-01 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
pub_type: 杂志文章
doi:10.1093/ejo/cjm094
更新日期:2008-02-01 00:00:00
abstract::In this study, botulinum neurotoxin type A (BoTx/A) was injected into the temporalis and masseter muscles of growing rats to induce masticatory hypoactivity. Sixty, 30-day-old, male Long-Evans rats were randomly divided into four groups. BoTx/A was bilaterally injected in the masseter muscles in group I, in the tempor...
journal_title:European journal of orthodontics
pub_type: 杂志文章
doi:10.1093/ejo/cjq029
更新日期:2011-04-01 00:00:00
abstract::The aim of this study was to test the hypothesis that there is no difference in salivary metal ion content between subjects with fixed orthodontic appliances and their same-gender sister or brother without any orthodontic appliance. This retrospective study was carried out on 28 subjects (16 females and 12 males) who ...
journal_title:European journal of orthodontics
pub_type: 杂志文章
doi:10.1093/ejo/cjq181
更新日期:2012-02-01 00:00:00
abstract::The purpose of this study was to assess the influence of two light units, a quartz-tungsten-halogen (QTH) and a light-emitting diode (LED), on the hardness and degree of conversion of an orthodontic composite resin. Sixty specimen disks were prepared from Transbond XT composite resin (3M Unitek) and light cured for 10...
journal_title:European journal of orthodontics
pub_type: 杂志文章
doi:10.1093/ejo/cjp048
更新日期:2010-02-01 00:00:00
abstract::The search for an ideal enamel surface finishing method following bracket debonding has met with equivocal response. In this study, four other methods were assessed to determine their effectiveness against the slow speed tungsten carbide bur which is regarded as the established method of removing residual composite. O...
journal_title:European journal of orthodontics
pub_type: 杂志文章
doi:10.1093/ejo/17.2.121
更新日期:1995-04-01 00:00:00
abstract::The purpose of this work was to examine whether the clinical eruption of the permanent first molars and incisors is affected by pre-term birth. The data applied to 328 prematurely born white and black children and 1804 control children who participated in the Collaborative Perinatal Project (USA) in the early 1960s an...
journal_title:European journal of orthodontics
pub_type: 杂志文章
doi:10.1093/ejo/25.3.293
更新日期:2003-06-01 00:00:00
abstract::Malocclusion assessment methods are based on measurements of study casts, which requires that impressions be taken. In addition to being costly and time consuming, this process can be unpleasant for children. Therefore, the aim of this study was to evaluate intra- and inter-examiner reliability of intraoral score meas...
journal_title:European journal of orthodontics
pub_type: 杂志文章
doi:10.1093/ejo/cjl064
更新日期:2007-02-01 00:00:00
abstract::The purpose of this investigation was to assess the vertical changes occurring in skeletal open bite patients treated orthodontically with different extraction patterns. The study was conducted using lateral cephalometric radiographs taken before and after treatment. Fifteen patients who had an anterior open bite (AOB...
journal_title:European journal of orthodontics
pub_type: 杂志文章
doi:10.1093/ejo/24.4.407
更新日期:2002-08-01 00:00:00
abstract:OBJECTIVES:Assess facial asymmetry in subjects with unilateral cleft lip (UCL), unilateral cleft lip and alveolus (UCLA), and unilateral cleft lip, alveolus, and palate (UCLP), and to evaluate which area of the face is most asymmetrical. METHODS:Standardized three-dimensional facial images of 58 patients (9 UCL, 21 UC...
journal_title:European journal of orthodontics
pub_type: 杂志文章
doi:10.1093/ejo/cju104
更新日期:2015-12-01 00:00:00
abstract::The purpose of this study was to qualitatively and quantitatively assess the nickel, chromium, and ferrous levels in a population of 17 orthodontic patients undergoing treatment, compared with seven untreated individuals, employing a novel methodological approach and a new analytical technique. Salivary samples obtain...
journal_title:European journal of orthodontics
pub_type: 杂志文章
doi:10.1093/ejo/25.1.103
更新日期:2003-02-01 00:00:00
abstract::Laser scanning can be used to visualize the face in three dimensions. These scans can then be processed to enable assessment of facial changes. The aim of this single-centre, prospective, longitudinal, cohort study was to investigate whether four different visualization methods correctly represented facial changes occ...
journal_title:European journal of orthodontics
pub_type: 杂志文章
doi:10.1093/ejo/cjl037
更新日期:2007-02-01 00:00:00
abstract::The aim of this investigation was to determine the pattern of repair of root resorption regarding the location and type of tissue in adolescents after application of a well-controlled force magnitude. In 16 adolescents (mean age 13.8 years), the maxillary first premolars were buccally moved with a weekly reactivated f...
journal_title:European journal of orthodontics
pub_type: 杂志文章
doi:10.1093/ejo/20.6.727
更新日期:1998-12-01 00:00:00
abstract::The purpose of this study was to analyse the prevalence of ectopic eruption of maxillary first permanent molars in children with cleft lip and palate, and evaluate the influence of both local and genetic factors. Radiographs from 225 children, 125 girls and 100 boys, were studied. The prevalence in cleft children was ...
journal_title:European journal of orthodontics
pub_type: 杂志文章
doi:10.1093/ejo/15.6.535
更新日期:1993-12-01 00:00:00
abstract::The aim of this randomized controlled trial was to assess the effectiveness of a mandibular advancement appliance (MAA) in managing severe snoring. Twenty-eight adults with severe snoring and normal overnight oximetry were recruited from sleep disorder clinics. A maxillary placebo appliance and a MAA were worn by each...
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/23.2.127
更新日期:2001-04-01 00:00:00
abstract:BACKGROUND:No reliable predictive factors for treatment (Tx) success and outcome quality in Class II:1 Tx have been identified yet. OBJECTIVE:To assess the influence of pre-Tx Class II severity and skeletal maturity on outcome quality after Herbst-multibracket appliance (MBA) Tx. SUBJECTS AND METHODS:All Class II:1 p...
journal_title:European journal of orthodontics
pub_type: 杂志文章
doi:10.1093/ejo/cjaa052
更新日期:2020-09-24 00:00:00
abstract::The purpose of this ex vivo study was to compare the bond strengths and modes of failure of brackets bonded with three self-etching products [Adper Prompt L-Pop (3M Espe), Futurabond NR (Voco) and Transbond Plus (3M Unitek)] and a conventional 38 per cent phosphoric acid-etching system Etch-Rite (Pulpdent Corp.) at tw...
journal_title:European journal of orthodontics
pub_type: 杂志文章,随机对照试验
doi:10.1093/ejo/cjn103
更新日期:2009-06-01 00:00:00
abstract::The Beni Solow award for the best article published in the European Journal of Orthodontics in 2014 has been won by: Karoline Dreesen, Steven Swinnen, Koenraad Devriendt, and Carine Carels from Departments of Orthodontics and Human Genetics, Katholieke Universiteit Leuven, Belgium and Department of Orthodontics and Cr...
journal_title:European journal of orthodontics
pub_type: 社论,历史文章
doi:10.1093/ejo/cjv043
更新日期:2015-08-01 00:00:00
abstract:OBJECTIVE:To compare treatment duration between 0.018-inch and 0.022-inch slot systems and determine factors influencing treatment duration. SUBJECTS AND METHODS:Eligible participants aged 12 years or over were allocated to the 0.018-inch or 0.022-inch slot MBT appliance (3M-Unitek, Monrovia, California, USA) using bl...
journal_title:European journal of orthodontics
pub_type: 杂志文章,随机对照试验
doi:10.1093/ejo/cjy037
更新日期:2019-03-29 00:00:00
abstract:OBJECTIVE:This study investigated the expression of extracellular matrix metalloproteinase inducer (EMMPRIN) in the compression area during orthodontic relapse in rat molars. MATERIALS AND METHODS:Thirty Wistar rats (6 weeks old) underwent orthodontic tooth movement (OTM) of the left first maxillary molar for 21 days,...
journal_title:European journal of orthodontics
pub_type: 杂志文章
doi:10.1093/ejo/cjz046
更新日期:2020-06-23 00:00:00
abstract:AIMS:The aim of this work was to investigate the effects of commonly used orthodontic appliances on the magnetic resonance (MR) image quality of the craniofacial region, with special interest in the soft palate and velopharyngeal wall using real-time speech imaging sequences and anatomical imaging of the temporomandibu...
journal_title:European journal of orthodontics
pub_type: 杂志文章
doi:10.1093/ejo/cju103
更新日期:2015-12-01 00:00:00
abstract::The aim of the present study was to establish whether the early signs of various orofacial dysfunctions, malocclusions, or occlusal interferences can predict the development of temporomandibular dysfunction (TMD) in young adults. Forty-eight subjects referred for speech therapy and 49 controls participated in all four...
journal_title:European journal of orthodontics
pub_type: 杂志文章
doi:10.1093/ejo/26.4.367
更新日期:2004-08-01 00:00:00
abstract::The purpose of this study was to perform a meta-analysis of articles to verify the mandibular changes produced by the Fränkel-2 (FR-2) appliance during the treatment of growing patients with Class II malocclusions when compared with untreated growing Class II subjects. The literature published from January 1966 to Jan...
journal_title:European journal of orthodontics
pub_type: 杂志文章,meta分析,评审
doi:10.1093/ejo/cjq033
更新日期:2011-02-01 00:00:00
abstract::This investigation was designed to repeat classic studies into the associations between head posture and growth as a single unified study using up-dated methods for gathering and analysing the data. The material comprised the cephalometric radiographs of 59 children (34 males and 25 females) recorded in natural head p...
journal_title:European journal of orthodontics
pub_type: 杂志文章
doi:10.1093/ejo/cjq131
更新日期:2012-08-01 00:00:00
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
更新日期:2013-08-01 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
pub_type: 杂志文章
doi:10.1093/ejo/21.6.703
更新日期:1999-12-01 00:00:00
abstract::Using lateral cephalograms and a jaw movement-recording system, the relationship between the masticatory movement path and dentofacial morphology was investigated in 17 subjects (9 males and 8 females, mean age 23.5 years) without a history of orthodontic treatment. The masticatory movement path was measured at the ri...
journal_title:European journal of orthodontics
pub_type: 杂志文章
doi:10.1093/ejo/cjl036
更新日期:2007-02-01 00:00:00
abstract:OBJECTIVES:To examine the relationships between dental appearance, characteristics of the individual and their environment, and oral health-related quality of life (OHQoL) in young people over time. METHODS:A total of 374 young people (122 boys, 252 girls) aged 11-12 years from seven different XX schools were recruite...
journal_title:European journal of orthodontics
pub_type: 杂志文章
doi:10.1093/ejo/cju076
更新日期:2015-10-01 00:00:00
abstract::Optical surface scanning technologies produce dense three-dimensional (3D) data sets, which allow detailed analysis of surface morphology. This paper describes a method of analysing change in facial shape independently of change in size. The 3D data from three male subjects from the age of 6-21 years were recorded usi...
journal_title:European journal of orthodontics
pub_type: 杂志文章
doi:10.1093/ejo/23.3.275
更新日期:2001-06-01 00:00:00