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 were identified. After exclusion of 89 patients with incomplete records, 1353 subjects (635 males and 718 females) remained for analysis. Of these, 1130 had no missing permanent teeth, 52 had cleft lips, 110 had one to two teeth missing, 34 had three to five missing teeth, and 27 had greater than or equal to six missing teeth. The analyses focused on the type and number of missing teeth and on differences in the severity of dental agenesis according to gender and to referrals from various geographic regions around Regensburg. The data were statistically analysed using two-tailed tests. The following teeth were most frequently missing: tooth 35 (5.9 per cent), 45 (5.1 per cent), 22 (4.0 per cent), 12 (3.6 per cent), 15 (3.1 per cent), and 25 (3.0 per cent). No statistically significant difference in gender was found for one to two missing permanent teeth (low degree), hypo- or oligodontia (severe degree), or cleft lip. The odds ratio (OR) of presenting with hypo- or oligodontia compared with no missing teeth was higher among subjects originating from geographic regions outside Regensburg than from those from Regensburg, and it was statistically significantly higher for patients from Passau {OR = 3.53 [95% confidence interval (CI) = 1.18-10.52]} and Landshut [OR = 3.65 (95% CI = 1.22-10.99)]. The high prevalence and severe degree of dental agenesis of permanent teeth found in these groups of patients likely reflects distinct referral patterns for patients originating from geographic regions outside Regensburg. These data reinforce the need for a specialized dental treatment centre with the capacity to adequately serve a large rural area in Eastern Bavaria.
journal_name
Eur J Orthodjournal_title
European journal of orthodonticsauthors
Behr M,Proff P,Leitzmann M,Pretzel M,Handel G,Schmalz G,Driemel O,Reichert TE,Koller Mdoi
10.1093/ejo/cjq021subject
Has Abstractpub_date
2011-02-01 00:00:00pages
32-6issue
1eissn
0141-5387issn
1460-2210pii
cjq021journal_volume
33pub_type
杂志文章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::The aim of this study was to develop a valid and reproducible index of orthodontic treatment priority. After reviewing the available literature, it was felt that this could be best achieved by using two separate components to record firstly the dental health and functional indications for treatment, and secondly the a...
journal_title:European journal of orthodontics
pub_type: 杂志文章
doi:10.1093/oxfordjournals.ejo.a035999
更新日期:1989-08-01 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 aim of this study was to investigate if debonding microspheres (DM) could enhance electrothermal orthodontic debonding, and specifically to evaluate if the addition of DM, in varying concentrations to the orthodontic adhesive process, will affect bond strength. Bovine teeth (n=8) were mounted in acrylic using a si...
journal_title:European journal of orthodontics
pub_type: 杂志文章
doi:10.1093/ejo/cjq091
更新日期:2011-08-01 00:00:00
abstract::To compare force levels obtained from glass fibre-reinforced composite (FRC) archwires. Specifically, FRC wires were compared with polymer matrices having different dimethacrylate monomer compositions. FRC material (E-glass provided by Stick Tech Ltd, Turku, Finland) with continuous unidirectional glass fibres and fou...
journal_title:European journal of orthodontics
pub_type: 杂志文章
doi:10.1093/ejo/cjr128
更新日期:2013-02-01 00:00:00
abstract:OBJECTIVE:To compare treatment duration between 0.018-inch and 0.022-inch slot systems and determine factors influencing treatment duration. SUBJECTS AND METHODS:Eligible participants aged 12 years or over were allocated to the 0.018-inch or 0.022-inch slot MBT appliance (3M-Unitek, Monrovia, California, USA) using bl...
journal_title:European journal of orthodontics
pub_type: 杂志文章,随机对照试验
doi:10.1093/ejo/cjy037
更新日期:2019-03-29 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 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
abstract::This prospective study analysed the lateral cephalometric radiographs of 59 dentate, white, Caucasian males. Thirty-five patients with proven obstructive sleep apnoea (OSA) formed the experimental group, while 24 subjects with no history of respiratory disease acted as controls. Radiographs were traced and digitized, ...
journal_title:European journal of orthodontics
pub_type: 杂志文章
doi:10.1093/ejo/18.6.557
更新日期:1996-12-01 00:00:00
abstract::The objective of the present study was to evaluate the cytotoxicity and degree of monomer conversion of resin-reinforced glass ionomer cements (RGIC) over different time periods. Four RGICs: Fuji Ortho LC (FOLC), Fuji Ortho Band (FOB), Orthoglass (OGL), and Multicure Glass Ionomer (MCI) were evaluated for cytotoxicity...
journal_title:European journal of orthodontics
pub_type: 杂志文章
doi:10.1093/ejo/cjr009
更新日期:2012-06-01 00:00:00
abstract::The role of matrix metalloproteinases (MMPs) in response to mechanical forces in orthodontic tooth movement has only been partially clarified. In the present in vivo pilot study, the presence, levels, and degree of activation of MMP-1 and -8 were measured daily for 1 month in gingival crevicular fluid (GCF) of patient...
journal_title:European journal of orthodontics
pub_type: 杂志文章
doi:10.1093/ejo/cjh097
更新日期:2005-04-01 00:00:00
abstract::Patients with mandibular prognathism have, for a number of years, been treated by orthognathic surgery and post-surgical changes in the facial profile have been widely reported. However, little is known about the influence of gender and age on the soft tissues. The aim of this study was to investigate changes in the s...
journal_title:European journal of orthodontics
pub_type: 杂志文章
doi:10.1093/ejo/cjn025
更新日期:2008-08-01 00:00:00
abstract::Mechanical stress induces human periodontal ligament (PDL) cells to express an osteoblastic phenotype in vitro. Core binding factor a1 (CBFA1) is a key regulator of osteoblast differentiation. This study was designed to investigate the role of CBFA1 in alveolar bone remodelling, specifically the expression of CBFA1 me...
journal_title:European journal of orthodontics
pub_type: 杂志文章
doi:10.1093/ejo/cjq010
更新日期:2010-12-01 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 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::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: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::Metabolism by peptidases plays an important role in modulating the levels of biologically-active neuropeptides, while that of substance P (SP), a component of gingival crevicular fluid (GCF), may potentiate the inflammatory process in orthodontic tooth movement. The aim of this study was two-fold: (1) to investigate G...
journal_title:European journal of orthodontics
pub_type: 杂志文章
doi:10.1093/ejo/cji100
更新日期:2006-06-01 00:00:00
abstract::It has previously been shown by light (LM) and scanning electron microscopy (SEM), that after force is terminated, repair of the orthodontic root resorption lacunae occur by deposition of new cementum. The ultrastructural details of the process are not well established. Since it has been hypothesized that a new barrie...
journal_title:European journal of orthodontics
pub_type: 杂志文章
doi:10.1093/ejo/17.3.189
更新日期:1995-06-01 00:00:00
abstract:BACKGROUND:Although ceramic brackets have been extensively used for decades in orthodontics there is not till today any study focusing on the possible deterioration of mechanical properties after in vivo ageing. OBJECTIVES:To determine whether the mechanical properties of alumina orthodontic brackets change after intr...
journal_title:European journal of orthodontics
pub_type: 杂志文章
doi:10.1093/ejo/cjz024
更新日期:2020-01-27 00:00:00
abstract::Tensile bond strength and bond failure location were evaluated in vitro for two types of aesthetic brackets (non-silanated ceramic, polycarbonate) and one stainless steel bracket, using bovine teeth as the substrate and diacrylate resin as the adhesive. The results show that metallic bracket had the highest bond stren...
journal_title:European journal of orthodontics
pub_type: 杂志文章
doi:10.1093/ejo/21.1.71
更新日期:1999-02-01 00:00:00
abstract::The persistence of childlike deglutition after the replacement of deciduous teeth is described as atypical deglutition. This condition has been attributed to sucking action without nutritive purposes, use of a feeding bottle, oral respiration, and anatomical abnormalities. Among the possible anatomical alterations, th...
journal_title:European journal of orthodontics
pub_type: 杂志文章
doi:10.1093/ejo/cjq167
更新日期:2012-02-01 00:00:00
abstract:Objectives:To assess the potential effects of casein phosphopeptides (CPPs) on orthodontically induced iatrogenic root resorption (OIIRR) and orthodontic teeth movement. Materials and methods:Forty Wistar rats (aged 11 weeks) were randomly divided into experimental group (EG; n = 20) that received a diet supplemented ...
journal_title:European journal of orthodontics
pub_type: 杂志文章
doi:10.1093/ejo/cjw085
更新日期:2017-10-01 00:00:00
abstract::The purpose of this investigation was to evaluate the effects of dental tipping and rotation immediately after surgically assisted rapid palatal expansion (SARPE). Fourteen patients (10 females, four males; mean age 25.6 years) who required a SARPE procedure were available for this study. A palatal expander appliance ...
journal_title:European journal of orthodontics
pub_type: 杂志文章
doi:10.1093/ejo/25.4.353
更新日期:2003-08-01 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 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 provides sex specific reference data for the incremental growth of the mandibular condyle. The results pertain to a mixed-longitudinal sample of 113 males and 108 females followed annually between 6 and 16 years of age (total of 1647 observations). Growth of condylion was evaluated using naturally stable ma...
journal_title:European journal of orthodontics
pub_type: 杂志文章
doi:10.1093/ejo/21.2.167
更新日期:1999-04-01 00:00:00
abstract:Objective and design:Our aim was to evaluate the effect of mandible advancement splint (MAS) in mild, moderate, and severe obstructive sleep apnea (OSA). We also determined, if and in which OSA-groups the adequate forward movement in MAS could be quantified without sleep registration for different OSA levels. A retrosp...
journal_title:European journal of orthodontics
pub_type: 杂志文章
doi:10.1093/ejo/cjw068
更新日期:2017-10-01 00:00:00
abstract::Fifteen patients, eight males and seven females with a mean age of 13.32 years, were selected for unilateral molar distalization. Dentally, all presented with a unilateral Class II molar relationship. The subjects were all in the permanent dentition with second molars erupted and with a well aligned lower dental arch....
journal_title:European journal of orthodontics
pub_type: 杂志文章
doi:10.1093/ejo/23.5.507
更新日期:2001-10-01 00:00:00
abstract::The Beni Solow award for the best article published in the European Journal of Orthodontics in 2014 has been won by: Karoline Dreesen, Steven Swinnen, Koenraad Devriendt, and Carine Carels from Departments of Orthodontics and Human Genetics, Katholieke Universiteit Leuven, Belgium and Department of Orthodontics and Cr...
journal_title:European journal of orthodontics
pub_type: 社论,历史文章
doi:10.1093/ejo/cjv043
更新日期:2015-08-01 00:00:00