Abstract：
:Reduced nasal airflow can be the result of enlarged adenoids, hypertrophic turbinates, severely deviated nasal septum, or even narrow nasal cavities. The question of whether the width of the nasal cavity may influence certain facial dimensions examined on the postero-anterior cephalometric X-ray was evaluated through the study of two different groups of subjects. Possible intercorrelations between some other frontal dimensions were also examined in these subjects. The first group consisted of 15 males and 22 females aged from 17 to 25 years diagnosed as having an anterior open bite of at least 2 mm. The second group consisted of 20 males and 16 females aged from 19 to 25 years with a normal Class I skeletal and dental pattern. Postero-anterior cephalometric X-rays were taken for all individuals and the following dimensions were measured: facial width, nasal width, maxillary width, mandibular width, nasal height, and lower facial height. Statistical analysis was performed for the primary linear measurements as well as for certain ratios. Nasal height and lower facial height were found to be significantly increased in both males and females of the open bite group. The ratios of nasal width to lower face height, as well as nasal width to nasal height, were found to differ significantly only between open bite and normal females, being higher in the latter group.
journal_name
Eur J Orthodjournal_title
European journal of orthodonticsauthors
Toutountzakis NE,Haralabakis NBdoi
10.1093/ejo/13.5.410subject
Has Abstractpub_date
1991-10-01 00:00:00pages
410-5issue
5eissn
0141-5387issn
1460-2210journal_volume
13pub_type
杂志文章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：: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：:Mandibular advancement splints (MASs) are used to advance the mandible forward in patients with sleep-disordered breathing. The conventional rigid MAS restricts the movement of the mandible, and this immobility sometimes produces discomfort, including temporomandibular disorders. A simple method for fabricating a mobi...
journal_title：European journal of orthodontics
pub_type： 杂志文章
doi：10.1093/ejo/cjp040
更新日期：2009-12-01 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：:Based on observations of longitudinal changes in dental arch dimensions, it has been stated that an individuality of arch form and an integrity of this form exists. However, longitudinal studies evaluating arch form changes have rarely been reported in the literature. The purpose of this investigation was to use a com...
journal_title：European journal of orthodontics
pub_type： 杂志文章
doi：10.1093/ejo/23.1.51
更新日期：2001-02-01 00:00:00
abstract：Objective:The aim of this in vitro study was to evaluate the progressive development of surface microdamage produced following the insertion of orthodontic miniscrews (OMs) into 1.5 mm thick porcine tibia bone using maximum insertion torque values of 12 Ncm, 18 Ncm, and 24 Ncm. Methods:Aarhus OMs (diameter 1.5 mm; len...
journal_title：European journal of orthodontics
pub_type： 杂志文章
doi：10.1093/ejo/cjx026
更新日期：2018-01-23 00:00:00
abstract：:The aim of this study was to statistically assess the morphological changes of the rat periodontal ligament (PDL) and its vascularity in relation to varied magnitudes of superelastic force in experimental tooth movement using nickel-titanium (NiTi) alloy wire. Forces of 0.8, 1.6, 4, 8, and 18 g were applied to the upp...
journal_title：European journal of orthodontics
pub_type： 杂志文章
doi：10.1093/ejo/cjn075
更新日期：2009-02-01 00:00:00
abstract：BACKGROUND:Cervical headgear (CH) is a commonly used orthodontic appliance and its dentoalveolar changes are known. However, the effects related to gender and timing have gained less attention. OBJECTIVES:To examine dimensions of dental arches among children with Class II occlusion without posterior mandibular rotatio...
journal_title：European journal of orthodontics
pub_type： 杂志文章,随机对照试验
doi：10.1093/ejo/cjy083
更新日期：2019-11-15 00:00:00
abstract：:In 138 successfully treated Class II division 1 patients (40 Activator and 98 Herbst) effective temporomandibular joint (TMJ) growth changes (a summation of condylar remodelling, glenoid fossa remodelling, and condylar position changes within the fossa), and their influence on the position of the chin and the rotation...
journal_title：European journal of orthodontics
pub_type： 杂志文章
doi：10.1093/ejo/24.6.627
更新日期：2002-12-01 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：:The aim of this laboratory-based study was to investigate the effects of different combinations of tip and torque upon friction between an orthodontic bracket and archwire using a specially made jig. Victory Twin Series upper premolar brackets (3M Unitek) were mounted on a jig, which allowed tip and torque values in t...
journal_title：European journal of orthodontics
pub_type： 杂志文章
doi：10.1093/ejo/cjn017
更新日期：2008-10-01 00:00:00
abstract：:The purpose of the present study was to evaluate the accuracy and reliability of airway volume digital measurements of cone-beam computed tomography (CBCT) compared with the manual measurements of an airway model. An acrylic airway model was constructed and attached to a human dry skull in the natural position of the ...
journal_title：European journal of orthodontics
pub_type： 杂志文章
doi：10.1093/ejo/cjr099
更新日期：2013-04-01 00:00:00
abstract：OBJECTIVE:To analyse cost-effectiveness of anchorage reinforcement with buccal miniscrews and with molar blocks. We hypothesized that anchorage with miniscrews is more cost-effective than anchorage with molar blocks. TRIAL DESIGN:A single-centre, two-arm parallel-group randomized controlled trial. METHODS:Adolescents...
journal_title：European journal of orthodontics
pub_type： 杂志文章,随机对照试验
doi：10.1093/ejo/cjy041
更新日期：2019-03-29 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：: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 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：Aim:The aim of this study was to describe hard and soft tissue changes after mandibular advancement surgery and to investigate the possible differences between Class II facial patterns. Materials and methods:Lateral cephalograms of 109 patients who underwent combined orthodontic treatment and bilateral sagittal split ...
journal_title：European journal of orthodontics
pub_type： 杂志文章
doi：10.1093/ejo/cjx003
更新日期：2017-10-01 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：: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：:This prospective study investigated the skeletal, dental, and soft-tissue effects of a mini maxillary protractor appliance in class III subjects with maxillary retrusion and mandibular protrusion and compared these changes with those of untreated, well matched control sample with normal occlusions. Twenty patients wit...
journal_title：European journal of orthodontics
pub_type： 杂志文章
doi：10.1093/ejo/cjt006
更新日期：2014-02-01 00:00:00
abstract：:The purpose of this study was to assess quantitatively the roughness of the enamel surface following debonding using two resin removal methods. The enamel surface of 30 premolar crowns was covered with black tape with a 3 mm window on the middle buccal third to standardize the area of analysis. The initial enamel surf...
journal_title：European journal of orthodontics
pub_type： 杂志文章
doi：10.1093/ejo/26.3.333
更新日期：2004-06-01 00:00:00
abstract：:The location of the centre of resistance (CR) of various consolidated units of maxillary anterior teeth was determined in this study using human autopsy material. The units studied consisted of two central incisors, four incisors, and six anterior teeth. When horizontal forces were applied the CR for the two- and six-...
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 purpose of this retrospective study was to evaluate the treatment effects of the variable anchorage straightwire technique (VAST) in Angle Class II patients using Ricketts' growth prediction analysis. The subjects belonged to two groups: a control, consisting of 30 untreated Class II Swedish individuals (20 girls,...
journal_title：European journal of orthodontics
pub_type： 杂志文章
doi：10.1093/ejo/cjn038
更新日期：2009-02-01 00:00:00
abstract：Background/objectives:Functional appliances are commonly used to correct Class II malocclusion. This study aimed to compare the facial soft tissue changes in Caucasians between pre-treatment and with the construction bite versus pre-treatment and completion of treatment with a modified Twin-block appliance (MTBA). Mat...
journal_title：European journal of orthodontics
pub_type： 杂志文章
doi：10.1093/ejo/cjx098
更新日期：2018-09-28 00:00:00
abstract：:P561T heterozygous missense mutation in the growth hormone receptor (GHR) is a candidate genetic polymorphism (single-nucleotide polymorphism) for human mandibular growth. The purpose of this study was to assess whether this mutation affects mandibular growth during early childhood. The difference in mandibular growth...
journal_title：European journal of orthodontics
pub_type： 杂志文章
doi：10.1093/ejo/cjp017
更新日期：2009-10-01 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：:The aim of the present study was to develop an index specifically for the measurement of treatment complexity. Input factors were directly related to complexity, and the output was a score measuring the degree of treatment complexity. The sample comprised 120 sets of dental casts, 30 for each of the four main malocclu...
journal_title：European journal of orthodontics
pub_type： 杂志文章
doi：10.1093/ejo/cjl080
更新日期：2007-04-01 00:00:00
abstract：:This study investigated the influence of changing the antero-posterior (AP) and vertical proportions of the lower face on the rankings of facial attractiveness. Four hundred and fifty-four (219 males and 235 females) native Jordanians of various ages and professions rated the attractiveness of a sequence of antero-pos...
journal_title：European journal of orthodontics
pub_type： 杂志文章
doi：10.1093/ejo/cjq028
更新日期：2011-02-01 00:00:00
abstract：:Non-syndromic permanent canine agenesis, or combined with agenesis, or developmental absence of other tooth types, has occasionally been described in the literature, but isolated forms are rarely observed. The purpose of the present retrospective radiographic study was to provide data on the prevalence and distributio...
journal_title：European journal of orthodontics
pub_type： 杂志文章
doi：10.1093/ejo/cjp018
更新日期：2009-08-01 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
