Abstract：
:It was the aim of this study to investigate radiologically the distraction site in the gonial angle area after three different protocols of unidirectional mandibular distraction in sheep. Bilateral mandibular distraction was performed in nine sheep, and one other sheep served as a sham-operated control. In the nine experimental sheep, three different distraction protocols were used. In three sheep, an oblique corticotomy line was applied and the distractors were positioned perpendicular to the corticotomy line. In three other sheep, a horizontal corticotomy line was applied and the distractors were also positioned perpendicular to this corticotomy line. In the remaining three sheep, again, a horizontal corticotomy was performed, but with an angular positioning of the distractors relative to this corticotomy line. Distraction of 20 mm was performed over 20 days at a rate of 1 mm per day. After 3 weeks of retention the sheep were sacrificed, the mandibles were dissected and hemisectioned, and standardized hemimandibular contact radiographs were made of the specimens. The distracted gaps were traced from the radiograph and the gonial angle was measured. The displacements of the distracted parts were measured, the gonial angles were determined, and the values were compared with four additional control non-distracted sheep mandibles. The results show that there was a very large variability in the distracted gaps as well as in the gonial angle changes after distraction, and it was not possible to recognize any of the three different distraction protocols radiographically after distraction. Although performed under standardized conditions it is difficult to reproduce intended mandibular corticotomy lines in sheep.
journal_name
Eur J Orthodjournal_title
European journal of orthodonticsauthors
Helmy M,Lammens J,Struelens A,Verdonck A,Willems G,Schoenaers J,Carels Cdoi
10.1093/ejo/25.2.127keywords:
subject
Has Abstractpub_date
2003-04-01 00:00:00pages
127-33issue
2eissn
0141-5387issn
1460-2210journal_volume
25pub_type
杂志文章abstract：AIMS:To establish whether adolescent orthodontic patients with hypodontia have a preference between the aesthetic outcomes of two treatment strategies for lateral incisor agenesis. MATERIALS/METHODS:Standardized photographs of pre-orthodontic patients with missing lateral incisors were manipulated to produce images th...
journal_title：European journal of orthodontics
pub_type： 杂志文章
doi：10.1093/ejo/cju021
更新日期：2015-04-01 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
pub_type： 杂志文章
doi：10.1093/ejo/23.6.751
更新日期：2001-12-01 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
pub_type： 临床试验,杂志文章,随机对照试验
doi：10.1093/ejo/26.5.515
更新日期：2004-10-01 00:00:00
abstract：:The purpose of the study was to evaluate differences in dental arch morphology among an orthodontic sample of 386 untreated adult females between 17 and 68 years of age, categorized by age group (17-25 years, 26-35 years, or 35+ years) and malocclusion (Class I, Class II division 1, or Class II division 2). The result...
journal_title：European journal of orthodontics
pub_type： 杂志文章
doi：10.1093/ejo/16.1.47
更新日期：1994-02-01 00:00:00
abstract：Background:Hawley retainers (HRs) and vacuum formed retainers (VFRs) are the most commonly used removable retainers in the orthodontic practice. Patients' cooperation in wearing these appliances is affected by the levels of discomfort and oral impairment. The evidence regarding their acceptably among orthodontic patien...
journal_title：European journal of orthodontics
pub_type： 杂志文章,随机对照试验
doi：10.1093/ejo/cjx024
更新日期：2017-08-01 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：:Orthodontic bonding with glass ionomer cement is comparatively new. The purpose of this article is to review the current literature covering both in vitro and in vivo studies of various glass ionomer cements that have been used for orthodontic bonding. The review indicates that there is little support in the literatur...
journal_title：European journal of orthodontics
pub_type： 杂志文章,评审
doi：10.1093/ejo/18.4.385
更新日期：1996-08-01 00:00:00
abstract：:Fifty-two patients with malocclusions underwent orthodontic treatment in combination with orthognathic surgery involving a Le Fort I and/or sagittal split osteotomy. Approximately 5 years after surgery, the patients were examined for signs and symptoms of temporomandibular disorders (TMD). The frequencies were found t...
journal_title：European journal of orthodontics
pub_type： 杂志文章
doi：10.1093/ejo/22.5.537
更新日期：2000-10-01 00:00:00
abstract：AIM:To assess the prevalence of adjustment for confounding within statistical analysis and matching at the design stage in leading orthodontic journals and to explore potential associations between accounting for confounding and publication characteristics. MATERIALS AND METHODS:Twenty-four issues of four leading orth...
journal_title：European journal of orthodontics
pub_type： 杂志文章
doi：10.1093/ejo/cjv004
更新日期：2016-02-01 00:00:00
abstract：:This study, performed using a specially designed apparatus that included 10 aligned brackets, evaluated the frictional resistance generated by conventional stainless steel (SS) brackets (Victory Series), self-ligating Damon SL II brackets, Time Plus brackets, and low-friction ligatures (Slide) coupled with various SS,...
journal_title：European journal of orthodontics
pub_type： 杂志文章
doi：10.1093/ejo/cjm007
更新日期：2007-08-01 00:00:00
abstract：OBJECTIVES:This study compared the stability of tapered miniscrews with cylindrical miniscrews. MATERIALS/METHODS:One hundred and five tapered and 122 cylindrical self-drilling miniscrews were placed into the maxillary and mandibular buccal alveolar areas of 132 patients (43 males and 89 females). The insertion torque...
journal_title：European journal of orthodontics
pub_type： 杂志文章
doi：10.1093/ejo/cjt092
更新日期：2014-10-01 00:00:00
abstract：:The aim of this study was to compare the effects of the Gjessing (PG) retraction spring used with and without the zygoma anchorage system (ZAS) on canine retraction. Thirty patients, with an Angle Class I or Class II malocclusion, whose upper first premolars were scheduled for extraction, were divided into two equal g...
journal_title：European journal of orthodontics
pub_type： 杂志文章
doi：10.1093/ejo/cjp167
更新日期：2010-10-01 00:00:00
abstract：:Various investigations have mentioned the use of a bonded maxillary expansion appliance. It was postulated that a full coverage of the occlusal surfaces by acrylic would remove interferences during the lateral displacement of the two maxillary bones and would lessen the resistance to maxillary expansion. The first obj...
journal_title：European journal of orthodontics
pub_type： 杂志文章
doi：10.1093/oxfordjournals.ejo.a035967
更新日期：1989-02-01 00:00:00
abstract：BACKGROUND:Pain can discourage patients from seeking orthodontic treatment or compromise their compliance during therapy. OBJECTIVES:To determine the effects of verbal and written information on orthodontic pain after fixed appliance placement. TRIAL DESIGN:Two-arm parallel design randomized controlled trial. METHOD...
journal_title：European journal of orthodontics
pub_type： 杂志文章,随机对照试验
doi：10.1093/ejo/cjz068
更新日期：2020-11-03 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
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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 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：:The purpose of this study was to clarify the contributing factors and their influences on temporomandibular joint internal derangement (TMJ ID) symptoms in subjects with mandibular asymmetry. Postero-anterior (PA) cephalograms of 187 pre-orthodontic treatment subjects (aged 18-45 years, mean 23.9 years) were used to i...
journal_title：European journal of orthodontics
pub_type： 杂志文章
doi：10.1093/ejo/cji073
更新日期：2006-02-01 00:00:00
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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
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journal_title：European journal of orthodontics
pub_type： 杂志文章
doi：10.1093/ejo/13.6.452
更新日期：1991-12-01 00:00:00
abstract：:The effect of contamination by dietary oil on acid etching has not been reported in the literature. If dietary oil adversely affects acid etching, then a decrease in bond strength is expected. This in vitro study investigated the bond strength of brackets bonded to tooth surfaces that had been contaminated with dietar...
journal_title：European journal of orthodontics
pub_type： 临床试验,杂志文章,随机对照试验
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更新日期：1997-04-01 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：:Two-hundred-and-thirty-eight subjects in three different age-groups (7, 11, and 15 years) were followed over a period of 4-5 years in respect of morphological malocclusions, and signs and symptoms of functional disturbances. About half of the 7-year-olds had at least one of the morphological malocclusions registered w...
journal_title：European journal of orthodontics
pub_type： 杂志文章
doi：10.1093/ejo/12.4.399
更新日期：1990-11-01 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
pub_type： 杂志文章
doi：10.1093/ejo/13.1.65
更新日期：1991-02-01 00:00:00
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
pub_type： 杂志文章
doi：10.1093/ejo/24.3.263
更新日期：2002-06-01 00:00:00
abstract：:The effects of an extra chromosome on tooth size were investigated and compared to male and female controls, respectively. Mesiodistal dimensions in men with Klinefelter's syndrome were generally found to be decreased when compared to the male controls. A more pronounced inhibitory effect of an extra X chromosome was ...
journal_title：European journal of orthodontics
pub_type： 杂志文章
doi：10.1093/ejo/15.3.195
更新日期：1993-06-01 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
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 purpose of this study was to compare the effect of overjet and overbite correction in non-extraction and extraction therapy in a sample of Class II malocclusions treated with the Edgewise appliance. The subjects were 20 children treated without extraction and 20 children treated with extraction of the four first p...
journal_title：European journal of orthodontics
pub_type： 杂志文章
doi：10.1093/oxfordjournals.ejo.a035984
更新日期：1989-05-01 00:00:00
abstract：:Many practitioners will recognize that subjects with a large mandibular plane inclination are characterized by an extended head posture and a forward inclined cervical column, i.e. an extended cranio-cervical posture. It is also typical that subjects with a short-face morphology often carry their heads somewhat lowere...
journal_title：European journal of orthodontics
pub_type： 杂志文章
doi：10.1093/ejo/24.5.447
更新日期：2002-10-01 00:00:00
abstract：Objectives:To assess arch width, palatal surface area, and volume in surgically treated unilateral cleft lip and palate (UCLP) in mixed dentition children in comparison with non-cleft lip and palate (NCLP) children using a 3D laser scanning. Materials and Methods:38 subjects (Caucasian origin), 5.63-11.9 years of age ...
journal_title：European journal of orthodontics
pub_type： 杂志文章
doi：10.1093/ejo/cjx019
更新日期：2017-11-30 00:00:00
