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 involving extractions and extra-oral traction. The relationships between changes in upper and lower lip positions, naso-labial angle, and labiomental fold with those in the underlying dento-skeletal elements were examined. The ratio between movement of the upper lip prominence and upper incisor crown was also calculated. Finally, the patterns of correlation between the two groups were compared. Both Spearman and partial correlations were calculated. The latter were used in an attempt to separate the true treatment effects from those of growth. This reduced the number of significant correlations considerably, 'sharpening' the results so that expected levels of agreement were enhanced, whereas spurious results were reduced. Few correlations reached a level of r = 0.7 or above. Incisor retraction was correlated with upper lip movement at this level only in the Edgewise group. No correlations were found between changes in naso-labial angle, labio-mental fold, and their underlying hard tissues. The Spearman correlations largely agreed with those of other authors, indicating that most of their apparently concordant hard and soft tissue movement was due to growth rather than appliance therapy. The use of ratios to compare upper lip and maxillary incisor retraction was not relevant in the functional appliance group because the average lip change was very small. It is concluded that the relationship between hard and soft tissue movement is too complex to be examined in a relatively simplistic way.
journal_name
Eur J Orthodjournal_title
European journal of orthodonticsauthors
Battagel JMdoi
10.1093/ejo/12.2.154subject
Has Abstractpub_date
1990-05-01 00:00:00pages
154-65issue
2eissn
0141-5387issn
1460-2210journal_volume
12pub_type
杂志文章abstract::The purpose of the present investigation was to determine the long-term prognosis of autotransplanted premolars with respect to periodontal healing. The subjects consisted of 195 patients aged 7 to 35 years, with a total of 370 autotransplanted all operated and followed with a standard technique. The observation perio...
journal_title:European journal of orthodontics
pub_type: 杂志文章
doi:10.1093/ejo/12.1.25
更新日期:1990-02-01 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::Various studies have reported a significant reduction in tensile bond strength of brackets when bonding is carried out immediately after bleaching. The purpose of this investigation was to determine the effect of an antioxidant agent on the tensile bond strength values of metal brackets bonded with composite resin to ...
journal_title:European journal of orthodontics
pub_type: 杂志文章
doi:10.1093/ejo/cji044
更新日期:2005-10-01 00:00:00
abstract::The aim of the present investigation was to examine position, occlusion, and interproximal contacts of 139 transplanted third molars in 136 patients (94 females, 42 males) with a mean age of 17.6 years at the time of transplantation. Ninety-two teeth were placed directly into favourable positions and left to erupt spo...
journal_title:European journal of orthodontics
pub_type: 杂志文章
doi:10.1093/ejo/cjn084
更新日期:2009-04-01 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::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::Soft tissue stretching has been proposed as one of the control factors in craniofacial morphogenesis. However, its mechanism remains unclear. The present study investigated electromyographic (EMG) activity and muscle fibre composition of cervical muscles following prolonged head extension in growing rats. Thirty-six m...
journal_title:European journal of orthodontics
pub_type: 杂志文章
doi:10.1093/ejo/25.1.21
更新日期:2003-02-01 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::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
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:SUMMARY:The purpose of this study was to assess the short-term psychosocial impact of dental aesthetic improvement in adult subjects. Sixty-nine adult patients (61 females and 8 males, aged 21-59 years) requesting aesthetic dental improvement were prospectively and randomly recruited for the study in a private orthodon...
journal_title:European journal of orthodontics
pub_type: 杂志文章
doi:10.1093/ejo/cjp144
更新日期:2010-08-01 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
doi:10.1093/ejo/19.2.109
更新日期:1997-04-01 00:00:00
abstract::This study evaluated the effect of sandblasting foil mesh molar tube bases on the shear bond strength obtained when bonding to first molar teeth. Fifty-two recently extracted first molar teeth were etched with 35 per cent phosphoric acid gel for 30 seconds. Twenty-six sandblasted 'A' Company molar tube attachments and...
journal_title:European journal of orthodontics
pub_type: 杂志文章
doi:10.1093/ejo/21.3.311
更新日期:1999-06-01 00:00:00
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
更新日期:2020-02-01 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::This study investigated whether there were differences between the debond stress and adhesive remnant index (ARI) of an adhesive cured with three different orthodontic light sources. Sixty sound premolar teeth were divided into three groups of 20. A standard pre-adjusted edgewise premolar bracket (Victory Series) was ...
journal_title:European journal of orthodontics
pub_type: 杂志文章
doi:10.1093/ejo/cji076
更新日期:2006-02-01 00:00:00
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
更新日期:2005-06-01 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::The aim of this investigation was to compare Swedish and immigrant groups of 12- and 13-year-old boys and girls with respect to: (1) self-perceived need for and attitude to orthodontic treatment, (2) attitude to own teeth and general appearance, (3) behaviour pattern and psychosocial functioning, and (4) self-perceive...
journal_title:European journal of orthodontics
pub_type: 杂志文章
doi:10.1093/ejo/cjh070
更新日期:2005-04-01 00:00:00
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
更新日期:2017-10-01 00:00:00
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
更新日期:1995-10-01 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::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::In 69 individuals from a randomized epidemiological material comprising 450 adults, an intra-individual comparison of the periodontal condition of 73 mesially tipped molars (30 degrees or more to a line perpendicular to the occlusal plane) and contralateral upright molars was made. The alveolar bone level mesially and...
journal_title:European journal of orthodontics
pub_type: 杂志文章
doi:10.1093/ejo/14.6.449
更新日期:1992-12-01 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: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 journ...
journal_title:European journal of orthodontics
pub_type: 杂志文章,评审
doi:10.1093/ejo/cjv049
更新日期:2016-06-01 00:00:00
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
更新日期:1991-10-01 00:00:00
abstract::The purpose of this study was to evaluate the Denture Frame Analysis. This adjunctive cephalometric analysis of the lateral headfilm was introduced in Japan, but no data exist for the Caucasian population at present. One-hundred-and-six Caucasians were randomly selected and assigned to one of four groups, according to...
journal_title:European journal of orthodontics
pub_type: 杂志文章
doi:10.1093/ejo/20.5.579
更新日期:1998-10-01 00:00:00
abstract::Orthodontic treatment is mainly dependent on the loads developed by metal wires. The load developed by a buckled orthodontic wire is of great concern for molar distalization and cannot be simply derived from mechanical properties measured through classical tests (i.e. tensile, torsion, and bending). A novel testing me...
journal_title:European journal of orthodontics
pub_type: 杂志文章
doi:10.1093/ejo/cjm112
更新日期:2008-04-01 00:00:00
abstract::The purpose of this study was to propose a growth-based structural superimposition method for assessment of cervical vertebral fusion and evaluate variations and abnormalities of the upper cervical vertebrae. Standardized lateral cephalograms of 156 patients (69 males and 87 females, age range 6-20 years), representin...
journal_title:European journal of orthodontics
pub_type: 杂志文章
doi:10.1093/ejo/cjp049
更新日期:2010-02-01 00:00:00