Abstract：
:This clinical study evaluated factors related to root resorption before (T1) and after (T2) orthodontic treatment. Ninety-six subjects between 9 and 34 years (34 males and 62 females) who had been treated using fixed appliances for at least 1 year and who had panoramic radiographs at T1 and T2 were selected. The relationship between root resorption at T1 and T2, with regard to gender, age, extraction versus non-extraction patterns, specific teeth and treatment duration was investigated. No statistically significant differences in root resorption were found in relation to gender. Significant differences in root resorption (P = 0.000, P < 0.01) and also in treatment duration (P = 0.036, P < 0.05) were noted between the extraction and non-extraction groups; extraction and treatment duration correlated with T2 mean root resorption. Patient age correlated with root resorption of the upper incisors at T1 and T2. Using multiple regression analysis, age and duration of treatment were found to be more associated with root resorption than with extractions; the presence of root resorption at T1 was associated with T2 root resorption, especially of the anterior teeth.
journal_name
Eur J Orthodjournal_title
European journal of orthodonticsauthors
Jiang RP,McDonald JP,Fu MKdoi
10.1093/ejo/cjp165subject
Has Abstractpub_date
2010-12-01 00:00:00pages
693-7issue
6eissn
0141-5387issn
1460-2210pii
cjp165journal_volume
32pub_type
杂志文章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 investigate the short- and long-term effects induced by rapid maxillary expansion (RME) on the shape of the maxillary and circummaxillary structures by means of thin-plate spline (TPS) analysis. The sample consisted of 42 patients who were compared with a control sample of 20 subjects. The...
journal_title：European journal of orthodontics
pub_type： 杂志文章
doi：10.1093/ejo/24.2.143
更新日期：2002-04-01 00:00:00
abstract：:A new appliance with samarium cobalt magnets embedded in unilateral blocks of acrylic is described, as a way of stimulating an autogenous costochondral graft, in a case with hemifacial microsomia. Laser scan images are used to illustrate a reversion towards facial soft tissue symmetry, over a 3-year period of treatmen...
journal_title：European journal of orthodontics
pub_type： 杂志文章
doi：10.1093/ejo/17.4.263
更新日期：1995-08-01 00:00:00
abstract：OBJECTIVES:The objective of the study was to evaluate the impact of temporomandibular joint (TMJ) arthritis on the functional disability and quality of life in patients affected by juvenile idiopathic arthritis (JIA). MATERIALS AND METHODS:Sixty-two consecutive patients with JIA with or without TMJ arthritis and 35 he...
journal_title：European journal of orthodontics
pub_type： 杂志文章
doi：10.1093/ejo/cjy034
更新日期：2019-03-29 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：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：:Orthodontic torque expression is the result of axial rotation of rectangular archwires within a rectangular bracket slot. This study investigates the effect of bracket material on torque expression. Torque exerted by a rotating archwire on each bracket will be measured as well as the relative deformation of each brack...
journal_title：European journal of orthodontics
pub_type： 杂志文章
doi：10.1093/ejo/cjr120
更新日期：2014-08-01 00:00:00
abstract：:The performance of 5941 stainless steel orthodontic brackets bonded with a no-mix adhesive (Right-on) in 563 patients was reviewed over a 5-year period. The effects of age and sex of the patient, treatment mechanics, operator experience, and arch location on the failure rate and mean survival time (MST) of bonded orth...
journal_title：European journal of orthodontics
pub_type： 杂志文章
doi：10.1093/ejo/16.3.203
更新日期：1994-06-01 00:00:00
abstract：:The aim of this study was to review recent randomized clinical trials (RCTs) dealing with the effectiveness of various modalities of orthopaedic/orthodontic expansion of maxillary arches with crossbite and the associated 6 month post retention stability. The study selection criteria included RCTs involving subjects wi...
journal_title：European journal of orthodontics
pub_type： 杂志文章,评审
doi：10.1093/ejo/cjr140
更新日期：2013-02-01 00:00:00
abstract：:The purpose of the present investigation was to consider possible aetiological aspects of mandibular tooth agenesis by comparing the pattern of mandibular molar and premolar agenesis with radiological evidence of the mandibular canal. Orthopantomograms from 33 children affected by agenesis of at least four premolar an...
journal_title：European journal of orthodontics
pub_type： 杂志文章
doi：10.1093/ejo/16.5.371
更新日期：1994-10-01 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：:The aim of this investigation was to study symptoms of temporomandibular disorders (TMD) and headaches longitudinally in girls with Class II malocclusions receiving orthodontic treatment in comparison with subjects with untreated Class II malocclusions and girls with normal occlusion, and to evaluate the need and dema...
journal_title：European journal of orthodontics
pub_type： 杂志文章
doi：10.1093/ejo/22.3.283
更新日期：2000-06-01 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：: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 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：: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：:The aetiology of palatal canine impaction is unclear. The aim of this research was to investigate the occlusal features that could contribute to the aetiology of palatal maxillary canine impaction. The material consisted of the pre-treatment dental casts of 34 patients (27 female and seven male) with unilateral palata...
journal_title：European journal of orthodontics
pub_type： 杂志文章
doi：10.1093/ejo/cji022
更新日期：2005-10-01 00:00:00
abstract：:The long-term goal of this research is to define the dimensions of nasal airway adequacy in children. Nasal airway size and variables associated with growth were assessed in 138 healthy children aged 7-15 years. The pressure-flow technique (Warren, 1984) was used to calculate the smallest cross-sectional area of the n...
journal_title：European journal of orthodontics
pub_type： 杂志文章
doi：10.1093/ejo/13.4.311
更新日期：1991-08-01 00:00:00
abstract：:The prevalence of signs and symptoms attributed to craniomandibular disorders (CMD) was established in an orthodontically treated sample. The effect of orthodontic therapy upon this prevalence was studied by monitoring three groups of patients whose treatment procedures were different. The first group was treated with...
journal_title：European journal of orthodontics
pub_type： 杂志文章
doi：10.1093/ejo/14.1.16
更新日期：1992-02-01 00:00:00
abstract：BACKGROUND:Low-frequency vibrations have been proposed as a means of accelerating tooth movement and reducing orthodontic treatment times. OBJECTIVE:To determine any differences in the accuracy of dental movement in patients treated with a low-frequency vibration aligner protocol and/or by reducing the aligner replace...
journal_title：European journal of orthodontics
pub_type： 杂志文章,随机对照试验
doi：10.1093/ejo/cjy076
更新日期：2019-08-08 00:00:00
abstract：OBJECTIVES:The aim of this study was to evaluate the effects of premaxillary advancement with distraction osteogenesis (DO) on the skeletal, dental, and soft tissues. MATERIALS AND METHODS:A total of 21 cases with Angle class I molar relationship and negative overjet or edge-to-edge incisor relationship were included....
journal_title：European journal of orthodontics
pub_type： 杂志文章
doi：10.1093/ejo/cjt056
更新日期：2014-06-01 00:00:00
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 ...
journal_title：European journal of orthodontics
pub_type： 杂志文章
doi：10.1093/ejo/13.5.410
更新日期：1991-10-01 00:00:00
abstract：Aim:The aim of this study was to describe the longitudinal changes in facial morphology, dental arch alterations and oral functional capacities that occur in growing patients with Duchenne muscular dystrophy (DMD) in order to identify the effects of the progression of the disease. Subjects and Methods:Twelve DMD patie...
journal_title：European journal of orthodontics
pub_type： 杂志文章,多中心研究
doi：10.1093/ejo/cjx038
更新日期：2018-04-06 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：:Clinical outcomes in children born with a cleft lip and palate (CLP) have been an area of interest for orthodontists for a number of years. Whilst tools for measurement of these outcomes are available, there is no widely accepted measure of initial cleft severity and no known quantitative indices. Therefore, the poten...
journal_title：European journal of orthodontics
pub_type： 杂志文章
doi：10.1093/ejo/22.1.93
更新日期：2000-02-01 00:00:00
abstract：:Differential scanning calorimetry (DSC) was used to determine the transition temperature ranges (TTR) of four types of super-elastic orthodontic nickel-titanium coil springs (Sentalloy). A knowledge of the TTR provides information on the temperature at which a NiTi wire or spring can assume superelastic properties and...
journal_title：European journal of orthodontics
pub_type： 杂志文章
doi：10.1093/ejo/21.5.497
更新日期：1999-10-01 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 purpose of this study was to assess the influence of two light units, a quartz-tungsten-halogen (QTH) and a light-emitting diode (LED), on the hardness and degree of conversion of an orthodontic composite resin. Sixty specimen disks were prepared from Transbond XT composite resin (3M Unitek) and light cured for 10...
journal_title：European journal of orthodontics
pub_type： 杂志文章
doi：10.1093/ejo/cjp048
更新日期：2010-02-01 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
