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 journals were electronically searched to identify RCTs. The quality of the included studies was assessed using the Cochrane RoB tool, which involves seven domains rated as 'low', 'unclear' or 'high': random sequence generation, allocation concealment, blinding of participants and personnel, blinding of outcome assessment, incomplete outcome data, and selective outcome reporting, and other threats to internal validity. Estimates and confidence intervals (CIs) were recorded or calculated where possible for binary and continuous outcome measures. Meta-regression models were employed to assess the impact of RoB per domain on the magnitude of treatment effect. RESULTS:One hundred and one eligible studies involving 128 pair-wise comparisons were retrieved. Blinding of outcome assessors and incomplete outcome data were frequently judged as 'high' for RoB both for studies with binary and continuous outcome (42.9 and 48.8 per cent, respectively). For binary outcomes, high RoB regarding random sequence generation [odds ratio (OR): 5.97, 95% CI: 2.03, 17.63, P-value: 0.002] and incomplete outcome data (OR: 4.07, 95% CI: 1.03, 16.15, P-value: 0.05) were more likely to provide exaggerated effect estimates. CONCLUSIONS:There is a need for improved clinical trial methodology and reporting, in order to avoid inflated associations and erroneous conclusions.
journal_name
Eur J Orthodjournal_title
European journal of orthodonticsauthors
Koletsi D,Spineli LM,Lempesi E,Pandis Ndoi
10.1093/ejo/cjv049subject
Has Abstractpub_date
2016-06-01 00:00:00pages
308-12issue
3eissn
0141-5387issn
1460-2210pii
cjv049journal_volume
38pub_type
杂志文章,评审abstract::It is well known that elastomers exhibit viscoelasticity and as such have their mechanical properties modified by temperature. Nickel titanium archwires are also affected by temperature and have been modified with specific temperature related properties for clinical use. What is less well known is the effect that othe...
journal_title:European journal of orthodontics
pub_type: 杂志文章
doi:10.1093/ejo/20.2.169
更新日期:1998-04-01 00:00:00
abstract::The aim of the present study was to examine dentoalveolar development in subjects with an 'ideal' (normal) occlusion. The material comprised 436 study casts of 189 male and 247 female subjects of Swedish origin between the ages of 5 and 31 years with no history of orthodontic treatment. Tooth width, and arch length, w...
journal_title:European journal of orthodontics
pub_type: 杂志文章
doi:10.1093/ejo/cjn124
更新日期:2009-04-01 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
pub_type: 杂志文章
doi:10.1093/ejo/cjaa060
更新日期:2020-12-24 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
pub_type: 杂志文章
doi:10.1093/ejo/cjr128
更新日期:2013-02-01 00:00:00
abstract:OBJECTIVE:To investigate the factors associated with the change in alveolar bone level of mandibular second and third molars after second molar protraction into the space of the missing first molar (L6) or second premolar (LE). METHODS:Fifty-one patients in whom space of the missing L6 or LE was treated with second mo...
journal_title:European journal of orthodontics
pub_type: 杂志文章
doi:10.1093/ejo/cjz001
更新日期:2019-09-21 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::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
pub_type: 杂志文章
doi:10.1093/ejo/14.2.152
更新日期:1992-04-01 00:00:00
abstract::The persistence of childlike deglutition after the replacement of deciduous teeth is described as atypical deglutition. This condition has been attributed to sucking action without nutritive purposes, use of a feeding bottle, oral respiration, and anatomical abnormalities. Among the possible anatomical alterations, th...
journal_title:European journal of orthodontics
pub_type: 杂志文章
doi:10.1093/ejo/cjq167
更新日期:2012-02-01 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
pub_type: 杂志文章
doi:10.1093/ejo/cjh099
更新日期:2005-02-01 00:00:00
abstract::This retrospective study examined the occurrence of congenitally missing permanent teeth and the need for dental treatment in the Regensburg University Medical Centre of Eastern Bavaria. Using a dental administration software tool, a total of 1442 patients who presented for orthodontic treatment between 1994 and 2006 ...
journal_title:European journal of orthodontics
pub_type: 杂志文章
doi:10.1093/ejo/cjq021
更新日期:2011-02-01 00:00:00
abstract::A prospective study of 23 consecutive adult Class II division 1 malocclusion subjects (19 female and 4 male) treated with the Herbst/multibracket (MB) appliance is presented. The skeletal, dental, and facial profile changes were evaluated in addition to the mechanism of Class II correction during the Herbst phase and ...
journal_title:European journal of orthodontics
pub_type: 杂志文章
doi:10.1093/ejo/cji116
更新日期:2006-08-01 00:00:00
abstract::The aim was to analyse 27-year-olds' perceptions of their own dental arrangement and any orthodontic care they may have received as a child or adolescent. All of the individuals in a sample of young adults in Kronoberg County, Sweden, who had received orthodontic care during childhood or adolescence (n = 121) were sel...
journal_title:European journal of orthodontics
pub_type: 杂志文章
doi:10.1093/ejo/20.3.319
更新日期:1998-06-01 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:SUMMARY:The aim of this study was to evaluate the effects of orthodontic treatment on systemic levels of the inflammatory markers, C-reactive protein (CRP), tumour necrosis factor-alpha (TNF-alpha), and interleukin-6 (IL-6). The study group comprised 11 girls and 6 boys (mean age 13.1 years) treated with fixed applianc...
journal_title:European journal of orthodontics
pub_type: 杂志文章
doi:10.1093/ejo/cjp108
更新日期:2010-08-01 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
pub_type: 杂志文章
doi:10.1093/ejo/cjq010
更新日期:2010-12-01 00:00:00
abstract::This paper describes and illustrates an innovative versatile skull-holding device for experimental research in cephalometrics. Repositioning of the skulls was evaluated and found to be highly reproducible. ...
journal_title:European journal of orthodontics
pub_type: 杂志文章
doi:10.1093/ejo/18.2.193
更新日期:1996-04-01 00:00:00
abstract:BACKGROUND AND OBJECTIVES:High-angle Class II malocclusion is considered challenging to treat to a stable result and, although studies report treatment outcome in terms of morphology, patient satisfaction has not been addressed. The objectives of the present study were to examine patients' motives for treatment and sat...
journal_title:European journal of orthodontics
pub_type: 杂志文章
doi:10.1093/ejo/cjaa038
更新日期:2020-06-20 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::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
更新日期:1989-08-01 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
pub_type: 杂志文章
doi:10.1093/ejo/cjn114
更新日期:2009-08-01 00:00:00
abstract::The surface topography of 100 clinically used archwires of stainless steel, beta-, or nickel-titanium were investigated that had contacted either ceramic or stainless steel brackets. One group consisted of two sets: 60 wires with no treatment records accessed to bias analyses, and 40 wires for which extensive clinical...
journal_title:European journal of orthodontics
pub_type: 杂志文章
doi:10.1093/ejo/22.4.409
更新日期:2000-08-01 00:00:00
abstract:BACKGROUND/OBJECTIVES:Facial soft tissues changes during growth roughly tend to mimic the underlying hard tissues, but not completely. The aim of this mixed longitudinal study was to assess facial growth among pre-pubertal and pubertal subjects without malocclusion using a non-invasive three-dimensional laser scanning ...
journal_title:European journal of orthodontics
pub_type: 杂志文章
doi:10.1093/ejo/cjw008
更新日期:2017-02-01 00:00:00
abstract::The purpose of this study was to examine the mechanical behaviour of orthodontic delta retraction springs. Twelve titanium-molybdenum (0.016 × 0.022 inch) delta loops were studied. The springs were analysed by means of the finite element (FE) method and experimental tests using a platform transducer. Each spring was a...
journal_title:European journal of orthodontics
pub_type: 杂志文章
doi:10.1093/ejo/cjr062
更新日期:2013-08-01 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:OBJECTIVES:The aim of this study was to evaluate the cephalometric outcome of bone-anchored maxillary protraction (BAMP) in individuals with unilateral complete cleft lip and palate (UCLP). MATERIAL AND METHODS:The experimental group (EG) comprised 23 individuals (17 males and 6 females) with UCLP and a mean age of 11...
journal_title:European journal of orthodontics
pub_type: 杂志文章
doi:10.1093/ejo/cjz005
更新日期:2019-09-21 00:00:00
abstract:Objective:To assess the dental, skeletal, and profile changes after functional appliances and subsequent fixed appliances treatment in order to quantify their effect and evaluate the influence of initial incisal inclination and growth pattern. Materials and methods:A retrospective cephalometric analysis was performed ...
journal_title:European journal of orthodontics
pub_type: 杂志文章
doi:10.1093/ejo/cjw064
更新日期:2017-06-01 00:00:00
abstract::It was the aim of the present study to cast light on the role of the mandible in relation to head posture and airway space by evaluating patients before and after surgical correction of mandibular prognathism. The material comprised standardized profile cephalograms of 52 patients with mandibular prognathism. All pati...
journal_title:European journal of orthodontics
pub_type: 杂志文章
doi:10.1093/oxfordjournals.ejo.a035962
更新日期:1989-02-01 00:00:00
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
更新日期:2014-06-01 00:00:00
abstract:Background:Caries is an undesirable side-effect of treatment with fixed orthodontic appliances. Therefore, it is crucial to understand how orthodontic treatment and different fluoride regimens affect caries risk and individual risk factors. Objective:To evaluate the effects of orthodontic treatment and different fluor...
journal_title:European journal of orthodontics
pub_type: 杂志文章,随机对照试验
doi:10.1093/ejo/cjy025
更新日期:2019-01-23 00:00:00
abstract::The analysis of the non-linear and time-dependent viscoelasticity of the periodontal ligament (PDL) enables a better understanding of the biomechanical features of the key regulator tissue for tooth movement. This is of great significance in the field of orthodontics as targeted tooth movement remains still one of the...
journal_title:European journal of orthodontics
pub_type: 杂志文章
doi:10.1093/ejo/cjs103
更新日期:2013-12-01 00:00:00