Abstract:
OBJECTIVES:To study treatment-related factors for external root resorption during orthodontic tooth movement. DESIGN:An experimental animal study. SETTING AND SAMPLE POPULATION:Department of Orthodontics and Oral Biology, University Medical Centre Nijmegen, The Netherlands. Twenty-four young adult beagle dogs. EXPERIMENTAL VARIABLE:Mandibular premolars were bodily moved with continuous or intermittent controlled orthodontic forces of 10, 25, 50, 100, or 200 cN according to standardized protocols. At different points in time histomorphometry was performed to determine the severity of root resorption. OUTCOME MEASURE:Prevalence of root resorptions, defined as microscopically visible resorption lacunae in the dentin. Severity of resorption was defined by the length, relative length, depth, and surface area of each resorption area. RESULTS:The incidence of root resorption increased with the duration of force application. After 14-17 weeks of force application root resorption was found at 94% of the root surfaces at pressure sides. The effect of force magnitude on the severity of root resorption was not statistically significant. The severity of root resorption was highly related to the force regimen. Continuous forces caused significantly more severe root resorption than intermittent forces. A strong correlation (0.60 < r < 0.68) was found between the amount of tooth movement and the severity of root resorption. CONCLUSIONS:Root resorption increases with the duration of force application. The more teeth are displaced, the more root resorption will occur. Intermittent forces cause less severe root resorption than continuous forces, and force magnitude is probably not decisive for root resorption.
journal_name
Orthod Craniofac Resjournal_title
Orthodontics & craniofacial researchauthors
Maltha JC,van Leeuwen EJ,Dijkman GE,Kuijpers-Jagtman AMdoi
10.1111/j.1601-6343.2004.00283.xsubject
Has Abstractpub_date
2004-05-01 00:00:00pages
115-21issue
2eissn
1601-6335issn
1601-6343journal_volume
7pub_type
杂志文章abstract::Antimicrobial orthodontic adhesives aim to reduce white spot lesions' incidence in orthodontic patients, but they should not jeopardizing its properties. Systematic review and meta-analysis were performed to answer the question whether the association of antimicrobial agents with orthodontic adhesives compromises its ...
journal_title:Orthodontics & craniofacial research
pub_type: 杂志文章,meta分析,评审
doi:10.1111/ocr.12100
更新日期:2016-02-01 00:00:00
abstract:OBJECTIVE:To determine the levels of the receptor activator of NFkB ligand (RANKL) and osteoprotegerin (OPG) in the gingival crevicular fluid (GCF) during orthodontic tooth movement. A second objective was to investigate the effect of compression force on RANKL and OPG production from human periodontal ligament (hPDL) ...
journal_title:Orthodontics & craniofacial research
pub_type: 杂志文章
doi:10.1111/j.1601-6343.2006.00340.x
更新日期:2006-05-01 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::We have developed a cone beam X-ray computed tomography (CT) system to make more accurate three-dimensional (3-D) images for diagnosis of dento-maxillofacial region. The developed system has sufficient spatial resolution, resolution of 3-D images and image distortion for diagnosis of dentomaxillofacial region. ...
journal_title:Orthodontics & craniofacial research
pub_type: 杂志文章
doi:10.1034/j.1600-0544.2003.249.x
更新日期:2003-01-01 00:00:00
abstract:OBJECTIVE:To compare subjective pain experience and oral health-related quality of life (OH-QoL) in treated and untreated subjects over the first 3 months of fixed appliance therapy. SETTING AND SAMPLE POPULATION:The Department of Orthodontics, School of Medicine and Dentistry. One hundred and twenty-four subjects age...
journal_title:Orthodontics & craniofacial research
pub_type: 杂志文章
doi:10.1111/ocr.12044
更新日期:2014-08-01 00:00:00
abstract:OBJECTIVES:Bone repair strategies continue to be developed for alternatives to autografting, allogeneic implants of banked bone, and other bone substitutes. Efforts have included the delivery of potent growth and/or differentiation factors and the use of gene therapy. For bone regeneration, gene therapy is the delivery...
journal_title:Orthodontics & craniofacial research
pub_type: 杂志文章
doi:10.1111/j.1601-6343.2005.00332.x
更新日期:2005-08-01 00:00:00
abstract:OBJECTIVES:This study sought to investigate the three-dimensional (3D) changes in anteroposterior, vertical and mediolateral positions and orientations of the mandibular condyle as well as joint space parameters following maxillary first premolar extraction and incisor retraction in skeletal Class II patients. SETTING...
journal_title:Orthodontics & craniofacial research
pub_type: 杂志文章
doi:10.1111/ocr.12141
更新日期:2017-05-01 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
abstract:OBJECTIVE:This investigation evaluates the evidence of case-based reasoning (CBR) in providing additional information on the prediction of future Class III craniofacial growth. SETTINGS AND SAMPLE POPULATION:The craniofacial characteristics of 104 untreated Class III subjects (7-17 years of age), monitored with two la...
journal_title:Orthodontics & craniofacial research
pub_type: 杂志文章
doi:10.1111/ocr.12466
更新日期:2021-01-08 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
abstract:OBJECTIVES:In patients with facial paralysis, facial reanimation surgery may be needed to normalize facial soft tissue function/movements. Critical for this normalization is the dynamics of the nasolabial folds (NLFs). The objective of this prospective, observational study was to determine the 3D morphologic dynamics o...
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
abstract:OBJECTIVES:Basic research concerning craniofacial development presently runs along two pathways, namely the molecular and the morphometric. This gap needs to be bridged. DESIGN:Using histological serial sections of human fetuses computer-aided three-dimensional reconstructions were made (Software Analysis, SIS) with s...
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
abstract:OBJECTIVES:To assess total Streptococci (TS) counts and biofilm mass over tooth-tissue-borne palatal expander (TTBPE), as well as the effect of chlorhexidine (CHX) mouth rinse on these variables. DESIGN:A cross-sectional study design employed clinical procedures and laboratorial techniques. SETTING AND SAMPLE POPULAT...
journal_title:Orthodontics & craniofacial research
pub_type: 杂志文章,随机对照试验
doi:10.1111/j.1601-6343.2007.00418.x
更新日期:2008-08-01 00:00:00
abstract:OBJECTIVE:An investigation to determine the changing facial appearance of identical twins. DESIGN:Clinical study. MATERIALS AND METHODS:Two Minolta Vivid 900 3D optical laser scanners were placed as a stereo pair to capture the soft tissues of a pair of identical twins. Each scan took approximately 2.5 s. The scanned...
journal_title:Orthodontics & craniofacial research
pub_type: 杂志文章
doi:10.1111/j.1601-6343.2005.00320.x
更新日期:2005-05-01 00:00:00
abstract::It has been suggested that surgical release of synostosed sutures may ameliorate various cranial base abnormalities in craniosynostotic patients. The present study was designed to test this hypothesis in a rabbit model with familial coronal suture synostosis (CSS). Data were collected from 56 New Zealand White rabbits...
journal_title:Orthodontics & craniofacial research
pub_type: 杂志文章
doi:10.1034/j.1600-0544.2002.01178.x
更新日期:2002-05-01 00:00:00
abstract::The mental health of children, adolescents, and adults with orofacial clefts has been studied extensively. Outcomes of interest have included parental adaptation, parent-child attachment, child development, intellectual and academic outcomes, behavioral adaptation, and quality of life. The literature sheds light on me...
journal_title:Orthodontics & craniofacial research
pub_type: 杂志文章,评审
doi:10.1111/j.1601-6343.2007.00394.x
更新日期:2007-08-01 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:Concurrent maxillary and mandibular expansion is a treatment option for patients with maxillary and mandibular transverse constriction. These patients do not present with crossbite but require expansion due to narrow arches and associated crowding, dark buccal corridors and decreased anterior arch contour. Th...
journal_title:Orthodontics & craniofacial research
pub_type: 杂志文章
doi:10.1111/ocr.12359
更新日期:2020-05-01 00:00:00
abstract:OBJECTS:Isolated cleft palate (CPO) is the rarest form of oral clefting affecting 1-25 per 10 000 newborns worldwide. There is increasing evidence for the different pathogenetic backgrounds of CPO and cleft lip with or without cleft palate. The role of environmental factors in the origin of non-syndromic and syndromic ...
journal_title:Orthodontics & craniofacial research
pub_type: 杂志文章
doi:10.1111/ocr.12361
更新日期:2020-05-01 00:00:00
abstract:OBJECTIVES:To examine the potential role of next-generation sequencing (NGS) and genetic testing to guide preventive care in dental enamel disorders using publicly available databases to access the frequency of deleterious alleles in AMTN, AMLEX and ENAM, associated with amelogenesis imperfecta (AI). SETTING AND SAMPL...
journal_title:Orthodontics & craniofacial research
pub_type: 杂志文章
doi:10.1111/ocr.12266
更新日期:2019-05-01 00:00:00
abstract:OBJECTIVE:To investigate the effects of diabetes on orthodontic tooth movement and orthodontically induced root resorption in rats. SETTING AND SAMPLE POPULATION:Twenty-three 10-week-old male Sprague-Dawley rats divided into control (n = 7), diabetes (n = 9), and diabetes + insulin (n = 7) groups. MATERIALS AND METHO...
journal_title:Orthodontics & craniofacial research
pub_type: 杂志文章
doi:10.1111/ocr.12117
更新日期:2016-05-01 00:00:00
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
doi:10.1111/ocr.12192
更新日期:2017-08-01 00:00:00
abstract:OBJECTIVES:The aim of this study was to compare three-dimensional airway changes resulting from mandibular advancement surgery and mandibular advancement surgery with constriction. SETTING AND SAMPLE POPULATION:The University of Michigan School of Dentistry and Medical Center. A total of 42 patients undergoing mandibu...
journal_title:Orthodontics & craniofacial research
pub_type: 杂志文章
doi:10.1111/ocr.12292
更新日期:2019-05-01 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:OBJECTIVE:The role of oestrogen in craniofacial growth still remains unclear. Therefore, the present study aimed to assess the effect of oestrogen deficiency on maxilla and mandible dimensions. SETTING AND SAMPLE POPULATION:The study was conducted at the Department of Pediatric Dentistry at the School of Dentistry of ...
journal_title:Orthodontics & craniofacial research
pub_type: 杂志文章
doi:10.1111/ocr.12376
更新日期:2020-08-01 00:00:00
abstract::The objective of the study was to provide a comprehensive review of the literature describing research done on the stability, adaptation and growth of craniofacial structures following distraction osteogenesis (DO). The design of the study was a literature review of clinical and experimental studies using electronic s...
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
abstract:OBJECTIVES:The purpose of this study was to investigate the effects of reduced masticatory function on midline suture growth and morphology in growing pigs. SETTING AND SAMPLE POPULATION:The sample was 20 pigs separated into two dietary groups and raised at the Department of Anthropology, Harvard University. Midline s...
journal_title:Orthodontics & craniofacial research
pub_type: 杂志文章
doi:10.1111/j.1601-6343.2010.01483.x
更新日期:2010-05-01 00:00:00
abstract:OBJECTIVE:The aim of this case-control study was to investigate the association between non-syndromic hypodontia and nineteen common variants of candidate genes ectodysplasin A (EDA), paired box 9 (PAX9), msh homeobox 1 (MSX1) and axis inhibition protein 2 (AXIN2). SETTINGS AND SAMPLE POPULATION:Sixty-one hypodontia c...
journal_title:Orthodontics & craniofacial research
pub_type: 杂志文章
doi:10.1111/ocr.12419
更新日期:2021-02-01 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:Recurrence of cranial bone fusion following surgical resection in craniosynostosis patients commonly requires additional surgical procedures. Surgical implantation of engineered 3D scaffolds that control tissue mineralization could be utilized to diminish recurrence of fusion. This study investigated the abi...
journal_title:Orthodontics & craniofacial research
pub_type: 杂志文章
doi:10.1111/ocr.12159
更新日期:2017-06-01 00:00:00