Abstract:
OBJECTIVE:To compare the concentration of nickel, chromium and cobalt in oral mucosa cells of patients with and without fixed orthodontic appliances. MATERIALS AND METHODS:A total of 60 patients were included in this study. The control group consisted of 30 patients without any type of fixed orthodontic appliances or metal restoration in the mouth (20 females and 10 males from 16 to 20 years with a mean age of 18 years). The test group consisted of 30 patients who had fixed orthodontic appliance in their upper and lower arches (20 females and 10 male from 16 to 20 years with a mean age of 18.2 years). The metal content determinations were carried out using atomic absorption spectrophotometry with a graphite furnace. RESULTS:According to spectrophotometric analysis, no significant differences in chromium (p = 0.09) and cobalt (p = 0.10) content of oral mucosa cells were found between the test and control samples. The nickel content in mucosa samples was significantly higher (p = 0.003) in orthodontic patients compared with the controls. The mean levels of nickel in control and orthodontic patient group were 12.26 and 21.74 ng / ml, respectively. CONCLUSION:Our findings indicate that there was no difference in the concentration of chromium and cobalt in oral mucosa cells of patients with or without fixed appliances. However, a significantly higher concentration of nickel can be found in oral mucosa cells of patients wearing fixed orthodontic appliances. Continued follow-up is needed to determine the long-term significance of nickel release.
journal_name
Orthod Craniofac Resjournal_title
Orthodontics & craniofacial researchauthors
Amini F,Borzabadi Farahani A,Jafari A,Rabbani Mdoi
10.1111/j.1601-6343.2008.00414.xsubject
Has Abstractpub_date
2008-02-01 00:00:00pages
51-6issue
1eissn
1601-6335issn
1601-6343pii
OCR414journal_volume
11pub_type
杂志文章abstract:OBJECTIVE:To evaluate orthodontic tooth movement (OTM) in rats treated with two types of bisphosphonates (BPs), alendronate sodium (A) and zoledronic acid (Z). DESIGN:In all, 15 male Wistar rats were randomly divided into three groups. Group OTM+A: orthodontic tooth movement and subcutaneous administration of alendron...
journal_title:Orthodontics & craniofacial research
pub_type: 杂志文章
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更新日期:2017-08-01 00:00:00
abstract:OBJECTIVES:To assess the effects of a modified alternate rapid maxillary expansion and constriction (Alt-RAMEC) protocol in combination with facemask (FM) in Class III growing patients. SETTING AND SAMPLE POPULATION:Thirty one Class III patients (17 males, 14 females) were treated with a modified Alt-RAMEC/FM protocol...
journal_title:Orthodontics & craniofacial research
pub_type: 杂志文章
doi:10.1111/ocr.12051
更新日期:2014-11-01 00:00:00
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journal_title:Orthodontics & craniofacial research
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更新日期:2021-01-08 00:00:00
abstract:INTRODUCTION:Functional appliances lead, in different degrees, to loss of anchorage in the lower arch. By anchoring them to the mandibular bone, any dental side effects may be avoided and the skeletal effect enhanced. Stability of bone-borne fixation would be affected by forces created by the pull of the masticatory mu...
journal_title:Orthodontics & craniofacial research
pub_type: 杂志文章
doi:10.1111/ocr.12004
更新日期:2013-02-01 00:00:00
abstract:OBJECTIVES:To explore centre-level variation in otitis media with effusion (OME), hearing loss and treatments in children in Cleft Care UK (CCUK) and to examine the association between OME, hearing loss and developmental outcomes at 5 and 7 years. SETTING AND SAMPLE POPULATION:Two hundred and sixty-eight 5-year-old Br...
journal_title:Orthodontics & craniofacial research
pub_type: 杂志文章
doi:10.1111/ocr.12184
更新日期:2017-06-01 00:00:00
abstract:OBJECTIVE:The present study aimed to analyse palatal changes due to rapid maxillary expansion (RME) by using modern geometric morphometric analysis (GMA) on 3D models. SETTINGS AND SAMPLE POPULATION:Forty children with posterior crossbite and maxillary deficiency were selected for this study. Twenty children were trea...
journal_title:Orthodontics & craniofacial research
pub_type: 杂志文章
doi:10.1111/ocr.12387
更新日期:2020-11-01 00:00:00
abstract:OBJECTIVES:To review the historic context for digital imaging in dentistry and to outline the fundamental issues related to digital imaging modalities. CONTEXT:Digital dental X-ray images can be achieved by scanning analog film radiographs (secondary capture), with photostimulable phosphors, or using solid-state detec...
journal_title:Orthodontics & craniofacial research
pub_type: 历史文章,杂志文章
doi:10.1034/j.1600-0544.2003.231.x
更新日期:2003-01-01 00:00:00
abstract:OBJECTIVES:To evaluate the accuracy of three-dimensional stereophotogrammetry by comparing values obtained from direct anthropometry and the 3dMDface system. To achieve a more comprehensive evaluation of the reliability of 3dMD, both linear and surface measurements were examined. SETTING AND SAMPLE POPULATION:UCLA Sec...
journal_title:Orthodontics & craniofacial research
pub_type: 杂志文章
doi:10.1111/ocr.12178
更新日期:2017-06-01 00:00:00
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journal_title:Orthodontics & craniofacial research
pub_type: 杂志文章
doi:10.1111/ocr.12069
更新日期:2015-04-01 00:00:00
abstract:OBJECTIVE:To investigate the effect of lithium on alveolar bone formation during orthodontic retention in rats. MATERIALS AND METHODS:After 2 weeks of orthodontic tooth movement (OTM), 42 8-week-old male Wistar rats were randomly divided into two orthodontic retention groups: one without (control) and the other with L...
journal_title:Orthodontics & craniofacial research
pub_type: 杂志文章
doi:10.1111/ocr.12190
更新日期:2017-08-01 00:00:00
abstract:OBJECTIVES:To introduce a new, fast, reliable, and free from software-related bias method to predict three-dimensionally the root position and angulation during and after orthodontic treatment. The final goal is to keep to a minimum the use of ionizing radiation by eliminating the necessity of multiple radiation exposu...
journal_title:Orthodontics & craniofacial research
pub_type: 杂志文章
doi:10.1111/ocr.12252
更新日期:2019-02-01 00:00:00
abstract::In cranial sutural samples derived from five children with premature cranial suture fusion we have performed immunostaining for the urokinase plasminogen activator (uPA) and urokinase receptor (uPAR). We have found a strong reactivity for cell- or matrix-bound uPA and uPAR in the sutural connective tissue and associat...
journal_title:Orthodontics & craniofacial research
pub_type: 杂志文章
doi:10.1034/j.1600-0544.2002.50101.x
更新日期:2002-02-01 00:00:00
abstract:UNLABELLED:AUTHOR: Shen G Objective -This review was compiled to explore the role of type X collagen in growth, development and remodeling of articular cartilage by elucidating the linkage between the synthesis of this protein and the phenotypic changes in chondrogenesis and the onset of endochondral ossification. DES...
journal_title:Orthodontics & craniofacial research
pub_type: 杂志文章,评审
doi:10.1111/j.1601-6343.2004.00308.x
更新日期:2005-02-01 00:00:00
abstract:OBJECTIVES:To investigate the 3D morphological variations in 169 temporomandibular ioint (TMJ) condyles, using novel imaging statistical modeling approaches. SETTING AND SAMPLE POPULATION:The Department of Orthodontics and Pediatric Dentistry at the University of Michigan. Cone beam CT scans were acquired from 69 subj...
journal_title:Orthodontics & craniofacial research
pub_type: 杂志文章
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更新日期:2015-04-01 00:00:00
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journal_title:Orthodontics & craniofacial research
pub_type: 杂志文章
doi:10.1111/ocr.12400
更新日期:2021-02-01 00:00:00
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journal_title:Orthodontics & craniofacial research
pub_type: 杂志文章,评审
doi:10.1111/ocr.12302
更新日期:2019-05-01 00:00:00
abstract:OBJECTIVES:The purpose of our study was to determine morphological changes and bone mineral density (BMD) differences in the adult mandible of offspring exposed to high calcium, low phosphorus diets in utero until weaning age. MATERIALS AND METHODS:Time-mated FVB wild-type mice were fed normal or experimental diet dur...
journal_title:Orthodontics & craniofacial research
pub_type: 杂志文章
doi:10.1111/ocr.12269
更新日期:2019-05-01 00:00:00
abstract:OBJECTIVES:To test the following two hypotheses: 1) different types of retainers result in distinct levels of biomarkers in gingival crevicular fluid (GCF) and 2) the retainer bonded to all mandibular anterior teeth induces more detrimental outcomes to the periodontium. SETTING AND SAMPLE POPULATION:The Department of ...
journal_title:Orthodontics & craniofacial research
pub_type: 杂志文章
doi:10.1111/ocr.12129
更新日期:2016-11-01 00:00:00
abstract::Repair of tooth supporting alveolar bone defects caused by periodontal and peri-implant tissue destruction is a major goal of reconstructive therapy. Oral and craniofacial tissue engineering has been achieved with limited success by the utilization of a variety of approaches such as cell-occlusive barrier membranes, b...
journal_title:Orthodontics & craniofacial research
pub_type: 杂志文章,评审
doi:10.1111/j.1601-6343.2005.00352.x
更新日期:2005-11-01 00:00:00
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journal_title:Orthodontics & craniofacial research
pub_type: 杂志文章
doi:10.1034/j.1600-0544.2003.240.x
更新日期:2003-01-01 00:00:00
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journal_title:Orthodontics & craniofacial research
pub_type: 杂志文章
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更新日期:2016-05-01 00:00:00
abstract:OBJECTIVES:While some eruption disorders occur as part of a medical syndrome, primary failure of eruption (PFE) - defined as a localized failure of secondary tooth eruption - exists without systemic involvement. Recent studies support that heredity may play an important role in the pathogenesis of PFE. The objective of...
journal_title:Orthodontics & craniofacial research
pub_type: 杂志文章
doi:10.1111/j.1601-6343.2009.01440.x
更新日期:2009-05-01 00:00:00
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journal_title:Orthodontics & craniofacial research
pub_type: 杂志文章,评审
doi:10.1111/j.1601-6343.2009.01452.x
更新日期:2009-08-01 00:00:00
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journal_title:Orthodontics & craniofacial research
pub_type: 杂志文章,多中心研究,随机对照试验
doi:10.1111/ocr.12093
更新日期:2015-08-01 00:00:00
abstract:OBJECTIVE:To clarify the correlation between variations in maximum occlusal force and the maxillofacial skeletal pattern in subjects with malocclusion using a compact device. DESIGN:Three hundred and fifty patients (150 males 200 females) with malocclusion were included. The male and female subjects were divided into ...
journal_title:Orthodontics & craniofacial research
pub_type: 杂志文章
doi:10.1111/j.1601-6343.2007.00405.x
更新日期:2007-11-01 00:00:00
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journal_title:Orthodontics & craniofacial research
pub_type: 杂志文章
doi:10.1034/j.1600-0854.2003.c245.x
更新日期:2003-05-01 00:00:00
abstract::The skin and the oral mucosa act as a barrier against the external environment. Loss of this barrier function causes dehydration and a high risk of infection. For the treatment of extensive skin wounds such as in severe burns, autologous skin for transplantation is often not available in sufficient amounts. Reconstruc...
journal_title:Orthodontics & craniofacial research
pub_type: 杂志文章,评审
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更新日期:2010-02-01 00:00:00
abstract:OBJECTIVES:To evaluate the reliability of a new technique for measuring 3D-scanned orthodontic cast models with cross-section planes using teledent, a new software, developed at Technion - for the purpose of this research. EXPERIMENTAL VARIABLE:Thirty orthodontic plaster models were divided into three equal groups acc...
journal_title:Orthodontics & craniofacial research
pub_type: 杂志文章
doi:10.1111/j.1601-6343.2007.00417.x
更新日期:2008-05-01 00:00:00
abstract:AIMS AND OBJECTIVES:Documentation of dental and orthodontic implications of osteoglophonic dysplasia (OGD). SETTINGS AND PARTICIPANTS:Case report describing oral and dental manifestations of a female with OGD, aged 39 years, who was first documented three decades ago. RESULTS:This rare genetic disorder manifests with...
journal_title:Orthodontics & craniofacial research
pub_type: 杂志文章
doi:10.1111/j.1601-6343.2006.00369.x
更新日期:2006-08-01 00:00:00
abstract:OBJECTIVES:To detect changes in mandibular growth between a historical group (HG) from the American Association of Orthodontics Foundation Craniofacial Growth Legacy Collection (AAOF Legacy) and a contemporary group (CG) of normodivergent or hypodivergent Class II untreated subjects. SETTING AND SAMPLE POPULATION:The ...
journal_title:Orthodontics & craniofacial research
pub_type: 杂志文章
doi:10.1111/ocr.12321
更新日期:2019-11-01 00:00:00