Abstract：
:The aim of this retrospective study was to examine the dental changes which occurred during buccal segment retraction in 39 subjects considered suitable for treatment with headgear to the maxillary dentition. Initially, a removable en masse appliance was fitted to distalize the buccal segments. Once the molar relationship was corrected, fixed appliances were placed for upper arch consolidation and/or alignment. Only five subjects required lower appliance therapy. Twenty-nine individuals had upper second molars extracted as an adjunct to treatment: in the remaining 10 patients these teeth were left in situ. Corresponding lower second molars were extracted in 19 children, whilst 20 pairs of teeth were not removed. Measurements were made at the start of treatment, the completion of buccal segment retraction, and when active treatment was complete. After the first stage, molars and premolars had been retracted nearly 4 mm, whilst the canines showed 2 mm spontaneous distal drift. The inter-molar width had increased by 4 mm and arch perimeter by 5 mm. There was a 5 per cent reduction in crowding. Spontaneous changes were also seen in the lower arch, despite the absence of any therapy. Crowding was slightly improved and inter-molar width increased, apparently as a response to the expansion in the opposing jaw. At the end of treatment, upper arch retraction and expansion were reduced as the teeth were integrated with the lower dentition: the canines required less than 1 mm further retraction. In the lower arch, the expansion of the molars was essentially stable. The extraction of upper second molars did not appear to influence the outcome of treatment. Although slightly more movement appeared to occur in the extraction group, few measurements showed statistical significance.
journal_name
Eur J Orthodjournal_title
European journal of orthodonticsauthors
Battagel JM,Ryan Adoi
10.1093/ejo/20.1.5subject
Has Abstractpub_date
1998-02-01 00:00:00pages
5-15issue
1eissn
0141-5387issn
1460-2210journal_volume
20pub_type
杂志文章abstract：:The aim of this study was to explore the complexities in constructing league tables purporting to measure orthodontic clinical outcomes. Eighteen orthodontists were invited to participate in a cost-effectiveness study. Each orthodontist was asked to provide information on 100 consecutively treated patients. The Index ...
journal_title：European journal of orthodontics
pub_type： 杂志文章
doi：10.1093/ejo/cjn036
更新日期：2008-12-01 00:00:00
abstract：:This study investigated the prevalence of bacteraemia on removal of fixed appliances. Venous blood samples were taken before and after debonding and debanding for 30 patients (mean age 17 years 8 months) who had worn fixed appliances for an average of 19 months. Before removal of the fixed appliances, bacteraemia was ...
journal_title：European journal of orthodontics
pub_type： 杂志文章
doi：10.1093/ejo/26.4.443
更新日期：2004-08-01 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
abstract：:Lateral-skull radiographs were used to examine the hard and soft tissue changes following overjet reduction in 62 children with moderately severe Class II division 1 malocclusions. Thirty-two patients were treated by non-extraction methods using Fränkel appliances, and the remainder by a standard Edgewise technique in...
journal_title：European journal of orthodontics
pub_type： 杂志文章
doi：10.1093/ejo/12.2.154
更新日期：1990-05-01 00:00:00
abstract：Background:Detection of pubertal growth peak is vital in orthodontic treatment timing and planning. Gingival crevicular fluid (GCF) contains abundant proteins from different sources and is an ideal source of biomarkers. The aim of this research is to detect candidate GCF biomarkers of pubertal growth by tandem mass tag...
journal_title：European journal of orthodontics
pub_type： 杂志文章
doi：10.1093/ejo/cjx082
更新日期：2018-07-27 00:00:00
abstract：Background and objectives:Apart from the primary effect of bite-blocks on tooth position, they may also influence the mandibular condylar growth. Our aim was to investigate their influence on the condylar morphology, with variable masticatory forces. Material and methods:Fifty-two 4-week old male rats were divided int...
journal_title：European journal of orthodontics
pub_type： 杂志文章
doi：10.1093/ejo/cjx072
更新日期：2018-05-25 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：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：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：Aim:To assess the association between tooth wear (TW) and gingival recession (GR). Materials and Methods:Two hundred and ten orthodontically treated participants (100 males) were evaluated. GR and TW were rated independently by four raters on plaster models at four time points: before treatment (T1), mean age 13.8 yea...
journal_title：European journal of orthodontics
pub_type： 杂志文章
doi：10.1093/ejo/cjx083
更新日期：2018-07-27 00:00:00
abstract：:The effect of protruded mandibular function on the maxilla and zygoma was studied in young unilaterally condylectomized growing rats. Forty-eight-4-week-old rats were divided into two experimental and two control groups as follows: group A, 12 animals unilaterally condylectomized on the right side; the mandible was al...
journal_title：European journal of orthodontics
pub_type： 杂志文章
doi：10.1093/ejo/19.2.205
更新日期：1997-04-01 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：:The viscoelastic behaviour of prototype composite orthodontic archwires was evaluated using a bend stress relaxation test. Archwires having 10 different volume fractions of reinforcement were subjected to constant bending radii in a water bath at 37 degrees C for time periods of up to 90 days. The wires were subsequen...
journal_title：European journal of orthodontics
pub_type： 杂志文章
doi：10.1093/ejo/22.1.1
更新日期：2000-02-01 00:00:00
abstract：:The purpose of this study was to investigate the effects of rapid maxillary expansion (RME) and semi-rapid maxillary expansion (SRME) in the mixed dentition period. The SRME group consisted of 18 patients (11 girls and 7 boys) with a mean age of 8.63 +/- 1.09 years and the RME group 17 patients (11 girls and 6 boys) w...
journal_title：European journal of orthodontics
pub_type： 杂志文章,随机对照试验
doi：10.1093/ejo/cjp057
更新日期：2010-02-01 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：: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
更新日期：2013-04-01 00:00:00
abstract：:The aim of this study was to compare standard plaster models with their digital counterparts for the applicability of the Index of Complexity, Outcome, and Need (ICON). Generated study models of 30 randomly selected patients: 30 pre- (T(0)) and 30 post- (T(1)) treatment. Two examiners, calibrated in the ICON, scored t...
journal_title：European journal of orthodontics
pub_type： 杂志文章
doi：10.1093/ejo/cjn077
更新日期：2009-06-01 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：: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 demonstrate the advantage of the finite helical axis (FHA) system in the biomechanical analysis of orthodontic tooth movement by comparing it with the rectangular coordinate (XYZ) system. Ten patients (6 females and 4 males, mean age 23 years 7 months) were selected. Maxillary canine r...
journal_title：European journal of orthodontics
pub_type： 杂志文章
doi：10.1093/ejo/cjm061
更新日期：2007-12-01 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：: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
pub_type： 杂志文章
doi：10.1093/ejo/19.6.669
更新日期：1997-12-01 00:00:00
abstract：:A retrospective cephalometric study was made of the hard tissue changes in a group of 90 Class III, Skeletal III children, diagnosed as suitable for treatment by orthodontic means alone. Thirty-two were treated by a combination of upper incisor proclination and headgear to an intact mandibular dentition (Group 1), whi...
journal_title：European journal of orthodontics
pub_type： 杂志文章
doi：10.1093/ejo/13.3.212
更新日期：1991-06-01 00:00:00
abstract：:Two young patients, one female and one male, with asymmetric occlusal deviation and extreme Angle Class II division 1 malocclusions were treated with the Herbst appliance after cessation of endochondral growth (union of the radius epiphysis). During treatment, computer tomographic (CT) scanning and orthopantomograms o...
journal_title：European journal of orthodontics
pub_type： 杂志文章
doi：10.1093/ejo/22.6.649
更新日期：2000-12-01 00:00:00
abstract：:The purpose of this study was to investigate the effect of treatment of mandibular crowding with self-ligating and conventional brackets on dental arch variables. Fifty-six patients were selected from a pool of subjects satisfying the following inclusion criteria: non-extraction treatment in the mandibular or maxillar...
journal_title：European journal of orthodontics
pub_type： 临床试验,杂志文章
doi：10.1093/ejo/cjp123
更新日期：2010-06-01 00:00:00
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
更新日期：2019-05-24 00:00:00
abstract：BACKGROUND/OBJECTIVE:Facial asymmetry is very common in adult class III patients; however, the degree of facial asymmetry in growing class III subjects has been poorly investigated. Therefore, the aim was to assess the degree of facial asymmetry of growing class III subjects and to compare it with a sample of growing s...
journal_title：European journal of orthodontics
pub_type： 杂志文章
doi：10.1093/ejo/cjt069
更新日期：2014-08-01 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
pub_type： 杂志文章
doi：10.1093/ejo/19.1.1
更新日期：1997-02-01 00:00:00
abstract：:The aims of the study were to identify craniofacial characteristics in patients with the rough hypoplastic amelogenesis imperfecta (AI) phenotype and to evaluate whether craniofacial variables are related to a mutation in either of the two genes associated with AI, enamelin (ENAM) and amelogenin (AMGX). Eight children...
journal_title：European journal of orthodontics
pub_type： 杂志文章
doi：10.1093/ejo/cjq089
更新日期：2011-06-01 00:00:00
abstract：:Unilateral tip-back mechanics are challenging because of a number of undesirable side-effects associated with their use during orthodontic treatment. The purpose of this paper is to review the differential diagnosis and treatment planning of Class II subdivision malocclusions and present a treatment strategy based on ...
journal_title：European journal of orthodontics
pub_type： 杂志文章
doi：10.1093/ejo/19.1.93
更新日期：1997-02-01 00:00:00
