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 silicone mould. Four test groups of three preparations of primer (Rely-a-Bond) with DM and a control were examined. Five incisor brackets were bonded to each tooth using the assigned primer and cold cure composite (Rely-a-Bond). Bracket tensile bond strength was measured in vitro in an Instron machine and recorded as debonding force (N). Differences between the groups were statistically analysed using analysis of variance, and repeatability was assessed. The mean debonding force of the control group was statistically significantly greater than all the other groups to which DM had been added (P<0.001). Comparison of the mean debonding forces of 1, 2.5, and 5 per cent concentrations of DM revealed no statistically significant difference between the groups. The addition of DM to orthodontic adhesive produced a highly statistically significant reduction in debonding force. There was no statistical difference in debonding force between varying concentrations of DM.
journal_name
Eur J Orthodjournal_title
European journal of orthodonticsauthors
Swinburne ML,Willmot D,Patrick Ddoi
10.1093/ejo/cjq091subject
Has Abstractpub_date
2011-08-01 00:00:00pages
407-12issue
4eissn
0141-5387issn
1460-2210pii
cjq091journal_volume
33pub_type
杂志文章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：: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：:A high prevalence of cervical vertebrae anomalies (CVA) has been recently associated with various malocclusions. Our aim was to study the prevalence of CVA on lateral cephalograms in Class II subjects and to compare the findings with those obtained from cone beam computed tomography (CBCT). Standardized cephalograms o...
journal_title：European journal of orthodontics
pub_type： 杂志文章
doi：10.1093/ejo/cjq192
更新日期：2012-04-01 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：: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：: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：OBJECTIVES:During orthodontic arch expansion, the teeth are displaced against the perioral soft tissues. This can affect the equilibrium of forces that are thought to act on teeth, with consequent implications for long-term stability. The aim of this study was to investigate the effect of incremental lower lip advancem...
journal_title：European journal of orthodontics
pub_type： 杂志文章
doi：10.1093/ejo/cjt094
更新日期：2014-12-01 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：: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：BACKGROUND/OBJECTIVES:Facial soft tissues changes during growth roughly tend to mimic the underlying hard tissues, but not completely. The aim of this mixed longitudinal study was to assess facial growth among pre-pubertal and pubertal subjects without malocclusion using a non-invasive three-dimensional laser scanning ...
journal_title：European journal of orthodontics
pub_type： 杂志文章
doi：10.1093/ejo/cjw008
更新日期：2017-02-01 00:00:00
abstract：:Recent studies revealed that the initial root resorption occurred in the peripheries of the necrotic periodontal ligament (PDL) and was performed by mono-nucleated non-clast macrophage- and fibroblast-like cells (Brudvik and Rygh, 1993a, b). The aim of the present transmission electron microscopic (TEM) investigation ...
journal_title：European journal of orthodontics
pub_type： 杂志文章
doi：10.1093/ejo/16.4.265
更新日期：1994-08-01 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：: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：:Cleidocranial dysplasia (CCD) is a rare, well-defined skeletal disorder with autosomal dominant inheritance and complete penetrance. Although it involves the whole skeletal system, the main clinical manifestations of CCD are malformations of the skull and clavicles, which lead to a typical appearance of the face and s...
journal_title：European journal of orthodontics
pub_type： 杂志文章
doi：10.1093/ejo/cjq107
更新日期：2011-10-01 00:00:00
abstract：:The aim of this retrospective study was to examine the dental changes which occurred during buccal segment retraction in 39 subjects considered suitable for treatment with headgear to the maxillary dentition. Initially, a removable en masse appliance was fitted to distalize the buccal segments. Once the molar relation...
journal_title：European journal of orthodontics
pub_type： 杂志文章
doi：10.1093/ejo/20.1.5
更新日期：1998-02-01 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：BACKGROUND:There are few cost evaluation studies of orthodontic retention treatment. The aim of this study was to compare the costs in a randomized controlled trial of three retention methods during 2 years of retention treatment. MATERIALS/METHODS:To determine which alternative has the lower cost, a cost-minimization...
journal_title：European journal of orthodontics
pub_type： 杂志文章,随机对照试验
doi：10.1093/ejo/cjt070
更新日期：2014-08-01 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：: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：: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 physiology of masseter muscles is known to change in response to functional demands, but the effect on the satellite cell (SC) population is not known. In this study, the hypothesis is tested that a decreased functional demand of the masseter muscle causes a reduction of SCs. To this end, twelve 5-week-old male Sp...
journal_title：European journal of orthodontics
pub_type： 杂志文章
doi：10.1093/ejo/cjs044
更新日期：2014-06-01 00:00:00
abstract：:The purpose of this study was to analyse the prevalence of ectopic eruption of maxillary first permanent molars in children with cleft lip and palate, and evaluate the influence of both local and genetic factors. Radiographs from 225 children, 125 girls and 100 boys, were studied. The prevalence in cleft children was ...
journal_title：European journal of orthodontics
pub_type： 杂志文章
doi：10.1093/ejo/15.6.535
更新日期：1993-12-01 00:00:00
abstract：Background/objective:To assess the validity and reliability of a series of three questionnaires for the quantification of patient perception of fixed appliance orthodontic treatment. Subjects and methods:The study was carried out at the University of Dundee with content and face validity being assessed using proformas...
journal_title：European journal of orthodontics
pub_type： 杂志文章
doi：10.1093/ejo/cjw076
更新日期：2017-08-01 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：: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：:The publication of the three-paper series on the effects of two slot sizes on treatment parameters in this issue, targets a topic, which has attracted a lot of discussion based primarily on anecdotal evidence. The conclusive evidence contribute to the lack of variation of treatment variables with slot size selection, ...
journal_title：European journal of orthodontics
pub_type： 评论,杂志文章
doi：10.1093/ejo/cjy051
更新日期：2019-05-24 00:00:00
abstract：:To study the effects of transforming growth factor beta 2 (TGF-beta 2) on bone resorption, cultures of 17-day-old foetal mouse metatarsal long bones were used. The long bone rudiments were cultured for 5 days in medium supplemented with 10% rat serum. The effects of TGF-beta 2 were studied at concentrations of 1, 4, a...
journal_title：European journal of orthodontics
pub_type： 杂志文章
doi：10.1093/ejo/16.2.130
更新日期：1994-04-01 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：: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：BACKGROUND/OBJECTIVE:Chondrogenesis is an integral part of endochondral bone formation, by which the midline cranial base is developed. Reactive oxygen species (ROS) are required in chondrogenic differentiation and antioxidant enzymes regulate their levels. The aim of this study was to localize the antioxidant enzyme g...
journal_title：European journal of orthodontics
pub_type： 杂志文章
doi：10.1093/ejo/cju045
更新日期：2015-06-01 00:00:00
