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orthodontic tooth movement

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https://www.readbyqxmd.com/read/28213930/antibiotic-administration-alleviates-the-aggravating-effect-of-orthodontic-force-on-ligature-induced-experimental-periodontitis-bone-loss-in-mice
#1
J Shi, Z Liu, T Kawai, Y Zhou, X Han
BACKGROUND AND OBJECTIVES: It is recognized that orthodontic force (OF) has an aggravating effect on the progression of destructive periodontitis if periodontitis have not been well controlled. However, the underlying mechanism is not completely clear. This study was to investigate the effect of antibiotic administration on OF-aggravated, ligature-induced experimental periodontitis in mice. MATERIAL AND METHODS: C57BL/6 mice (male, 8 wk old) were divided into three groups (n = 8)...
February 18, 2017: Journal of Periodontal Research
https://www.readbyqxmd.com/read/28203028/-unerupted-first-deciduous-molar-located-higher-to-the-first-premolar-a-case-report
#2
Y Zhan, H Liu
Tooth eruption is defined as the movement of a tooth from its site of development within the alveolar process to its functional position in the oral cavity. The process of tooth eruption can be divided into different phases: pre-eruptive bone stage, alveolar bone stage, mucosal stage, preocclusal stage, occlusal stage and maturation stage. Any disturbance in these phases can lead to eruptive anomalies. The incidence of unerupted teeth is usually higher among permanent teeth than among deciduous ones. Of the primary teeth reported as unerupted, second deciduous molars are the teeth most frequently involved, followed by primary central incisors...
February 18, 2017: Beijing da Xue Xue Bao. Yi Xue Ban, Journal of Peking University. Health Sciences
https://www.readbyqxmd.com/read/28197400/effect-of-gingival-fibroblasts-and-ultrasound-on-dogs-root-resorption-during-orthodontic-treatment
#3
Jacqueline Crossman, Ali H Hassan, Ali Saleem, Nayef Felemban, Saleh Aldaghreer, Elham Fawzi, Mamdouh Farid, Khaled Abdel-Ghaffar, Ausama Gargoum, Tarek El-Bialy
OBJECTIVES: To investigate the effect of using osteogenic induced gingival fibroblasts (OIGFs) and low intensity pulsed ultrasound (LIPUS) on root resorption lacunae volume and cementum thickness in beagle dogs that received orthodontic tooth movement. MATERIALS AND METHODS: Seven beagle dogs were used, from which gingival cells (GCs) were obtained and were induced osteogenically to produce OIGFs. Each third and fourth premolar was randomly assigned to one of the five groups, namely, LIPUS, OIGFs, bone morphogenetic protein-2 (BMP-2), OIGFs + LIPUS, and control...
January 2017: Journal of Orthodontic Science
https://www.readbyqxmd.com/read/28174364/evaluation-of-periodontal-changes-adjacent-to-extraction-sites-during-upper-canine-retraction
#4
Azzam Al-Jundi, Basem Al Sabbagh, Jagan K Baskaradoss
INTRODUCTION: There is an intimate relationship between orthodontic therapy and the periodontal changes that occur during tooth movement. MATERIALS AND METHODS: This prospective clinical trial aims at investigating the movement of both the free and attached gingiva, as well as the movement of the alveolar bone in the extraction site of the upper 1st premolars during the retraction of the upper canines. In this study, 17 patients (10 female, 7 male) requiring 1st premolar extraction before orthodontic tooth movement were selected and treated at the Department of Orthodontics in the Faculty of Dentistry in University of Hama, Hama, Syria...
February 1, 2017: Journal of Contemporary Dental Practice
https://www.readbyqxmd.com/read/28165889/force-induced-h2s-by-pdlscs-modifies-osteoclastic-activity-during-tooth-movement
#5
F Liu, F Wen, D He, D Liu, R Yang, X Wang, Y Yan, Y Liu, X Kou, Y Zhou
Hydrogen sulfide (H2S), a gasotransmitter, has been recently linked to mesenchymal stem cell (MSC) function and bone homeostasis. Periodontal ligament stem cells (PDLSCs) are the main MSCs in PDL, which respond to mechanical force to induce physiological activities during orthodontic tooth movement (OTM). However, it is unknown whether mechanical force might induce endogenous H2S production by PDLSCs to regulate alveolar bone homeostasis. Here, we used a mouse OTM model to demonstrate that orthodontic force-induced endogenous H2S production in PDL tissue was associated with macrophage accumulation and osteoclastic activity in alveolar bone...
February 1, 2017: Journal of Dental Research
https://www.readbyqxmd.com/read/28162971/comparison-of-friction-forces-between-stainless-orthodontic-steel-brackets-and-tini-wires-in-wet-and-dry-conditions
#6
Aphinan Phukaoluan, Anak Khantachawana, Pongpan Kaewtatip, Surachai Dechkunakorn, Niwat Anuwongnukroh, Peerapong Santiwong, Julathep Kajornchaiyakul
In sliding mechanics, frictional force is an important counter-balancing element to orthodontic tooth movement, which must be controlled in order to allow application of light continuous forces. The purpose of this study was to compare the frictional forces between a stainless steel bracket and five different wire alloys under dry and wet (artificial saliva) conditions. TiNi, TiNiCu, TiNiCo, commercial wires A and commercial wires B with equal dimensions of 0.016×0.022'' were tested in this experiment. The stainless steel bracket was chosen with a slot dimension of 0...
February 2, 2017: International Orthodontics
https://www.readbyqxmd.com/read/28149469/comparison-of-spring-characteristics-of-titanium-molybdenum-alloy-and-stainless-steel
#7
Ahmad Sheibaninia, Anahita Salehi, Armen Asatourian
BACKGROUND: Titanium-molybdenum alloy (TMA) and stainless steel (SS) wires are commonly used in orthodontics as arch-wires for tooth movement. However, plastic deformation phenomenon in these arch-wires seems to be a major concern among orthodontists. This study aimed to compare the mechanical properties of TMA and SS wires with different dimensions. MATERIAL AND METHODS: Seventy-two wire samples (36 TMA and 36 SS) of three different sizes (19×25, 17×25 and 16×22) were analyzed in vitro, with 12 samples in each group...
January 2017: Journal of Clinical and Experimental Dentistry
https://www.readbyqxmd.com/read/28133716/influence-of-uncontrolled-diabetes-mellitus-on-periodontal-tissues-during-orthodontic-tooth-movement-a-systematic-review-of-animal-studies
#8
REVIEW
Shariq Najeeb, Fahad Siddiqui, Saad Bin Qasim, Zohaib Khurshid, Sana Zohaib, Muhammad Sohail Zafar
Diabetes mellitus (DM) may adversely affect periodontal tissues during orthodontic tooth movement (OTM). The aim of this review is to systematically analyze and review animal studies investigating the effect of DM on periodontal tissues during OTM. An electronic search was conducted via PubMed/Medline, Google Scholar, Embase, ISI Web of Knowledge, and Cochrane Central Register of Controlled Trials (CONTROL) using the keywords "diabetes," "orthodontics," and "tooth movement" for studies published between January 2000 and August 2016...
December 2017: Progress in Orthodontics
https://www.readbyqxmd.com/read/28131911/effect-of-orthodontic-force-on-expression-levels-of-ten-cytokines-in-gingival-crevicular-fluid
#9
Livia Nunes, Luciana Quintanilha, Giuseppe Perinetti, Jonas Capelli
Various types of inflammatory mediators are involved in the cascade of biological events behind tissue remodeling allowing orthodontic tooth movement. This split-mouth longitudinal study aimed to evaluate the gingival crevicular fluid (GCF) levels of ten cytokines, IL-6, IL-8, IL-10, IL-13, IL-17, IFN-γ, GM-CSF, MCP-1, MIP-1β and TNF-α, during initial orthodontic treatment. The sample comprised 15 healthy patients (9 males and 6 females, 13.9±2.5 years). The lower (test) incisors were moved using fixed appliance carrying a 0...
January 21, 2017: Archives of Oral Biology
https://www.readbyqxmd.com/read/28113000/impact-of-obesity-on-orthodontic-tooth-movement-in-adolescents
#10
H F Saloom, S N Papageorgiou, G H Carpenter, M T Cobourne
Obesity is a widespread chronic inflammatory disorder characterized by an increased overall disease burden and significant association with periodontitis. The aim of this prospective clinical cohort study was to investigate the effect of obesity on orthodontic tooth movement. Fifty-five adolescent patients (27 males, 28 females) with a mean (SD) age of 15.1 (1.7) years and mean (SD) body mass index (BMI) of 30.2 (3.5) kg/m(2) in obese and 19.4 (2.2) kg/m(2) in normal-weight groups were followed from start of treatment to completion of tooth alignment with fixed orthodontic appliances...
January 1, 2017: Journal of Dental Research
https://www.readbyqxmd.com/read/28110408/gingival-recessions-of-lower-incisors-after-proclination-by-orthodontics-alone-or-in-combination-with-anterior-mandibular-alveolar-process-distraction-osteogenesis
#11
Gregory S Antonarakis, Christof Urs Joss, Albino Triaca, Anne Marie Kuijpers-Jagtman, Stavros Kiliaridis
OBJECTIVES: The aim of this study was to longitudinally compare periodontal conditions in consecutive patients who had orthodontic treatment with proclination of lower incisors either by orthodontics alone or in combination with anterior mandibular alveolar process distraction osteogenesis (DO). MATERIALS AND METHODS: Nineteen patients had orthodontic treatment with DO, 18 with extraction of lower premolars (Ex), and 18 without extractions (Nonex). Lateral cephalograms were used to evaluate lower incisor proclination, while study casts and intraoral photographs were used to evaluate labial and lingual gingival recessions before (T1) and at an average of 4...
January 21, 2017: Clinical Oral Investigations
https://www.readbyqxmd.com/read/28109519/inconclusive-evidence-for-the-effectiveness-of-nonconventional-methods-in-accelerating-orthodontic-tooth-movement
#12
Abdulraheem Alwafi
No abstract text is available yet for this article.
January 18, 2017: Journal of the American Dental Association
https://www.readbyqxmd.com/read/28102013/the-effect-of-potassium-diclofenac-and-dexamethasone-on-mmp-1-gene-transcript-levels-during-experimental-tooth-movement-in-rats
#13
G P Molina Da Silva, O M Tanaka, D F Campos Navarro, C E Repeke, G P Garlet, O Guariza-Filho, P C Trevilatto
OBJECTIVES: The aim of this study was to analyze MMP-1 transcript levels in periodontal tissues of rats that underwent orthodontic treatment using potassium diclofenac and dexamethasone at different stages of tooth movement. SETTING AND SAMPLE POPULATION: The sample comprised of ninety male Wistar rats. MATERIAL AND METHODS: A closed nickel-titanium coil spring was used to apply a force of 50 cN to move the maxillary right first molars mesially...
February 2017: Orthodontics & Craniofacial Research
https://www.readbyqxmd.com/read/28078880/orthodontic-forces-modulate-insulin-like-growth-factor-binding-protein-5-changes-in-gingival-crevicular-fluid
#14
A Ballini, L Santacroce, S Cantore, R Saini, F Mastrangelo, A Desiate, S Scacco
Orthodontic tooth movement results from the response of the periodontal tissue to orthodontic force, which leads to modeling and remodeling of the surrounding alveolar bone. The response is considered to occur through the activation of specific signaling pathways, many of which are known, all acting to ultimately result in tooth movement. Much is known about the actions of these two cells, and the signaling pathways that affect them, both in bone and orthodontic literature, however, to date, little work has been carried out to examine the effect of the insulin-like growth factor binding proteins (IGFBP) in orthodontics...
October 2016: Journal of Biological Regulators and Homeostatic Agents
https://www.readbyqxmd.com/read/28076465/the-effect-of-capsaicin-on-expression-patterns-of-cgrp-in-trigeminal-ganglion-and-trigeminal-nucleus-caudalis-following-experimental-tooth-movement-in-rats
#15
Yang Zhou, Hu Long, Niansong Ye, Lina Liao, Xin Yang, Fan Jian, Yan Wang, Wenli Lai
Objectives: The aim of this study was to explore the effect of capsaicin on expression patterns of calcitonin gene-related peptide (CGRP) in the trigeminal ganglion (TG) and trigeminal subnucleus caudalis (Vc) following experimental tooth movement. Material and Methods: Male Sprague-Dawley rats were used in this study and divided into small-dose capsaicin+force group, large-dose capsaicin+force group, saline+force group, and no force group. Closed coil springs were used to mimic orthodontic forces in all groups except for the no force group, in which springs were inactivated...
November 2016: Journal of Applied Oral Science: Revista FOB
https://www.readbyqxmd.com/read/28060561/aspirin-blocks-orthodontic-relapse-via-inhibition-of-cd4-t-lymphocytes
#16
Y Liu, T Zhang, C Zhang, S S Jin, R L Yang, X D Wang, N Jiang, Y H Gan, X X Kou, Y H Zhou
Immunologic response plays an important role in orthodontic tooth movement (OTM) and relapse. Nonsteroidal anti-inflammatory drugs, such as aspirin, affect immune cells and clinical orthodontic treatment. However, the mechanisms by which nonsteroidal anti-inflammatory drugs regulate immune cells to affect orthodontic relapse are unclear. In this study, male Sprague-Dawley rats were grouped as relapse and relapse + aspirin for 10 d after 14 d of OTM. Silicone impressions of the rats' maxillary dentitions were obtained to record the distance of OTM at the indicated time point...
January 1, 2017: Journal of Dental Research
https://www.readbyqxmd.com/read/28050063/a-radiographic-study-of-external-apical-root-resorption-in-patients-treated-with-single-phase-fixed-orthodontic-therapy
#17
S S Agarwal, S S Chopra, Prasanna Kumar, B Jayan, K Nehra, Mohit Sharma
BACKGROUND: External apical root resorption (EARR) is one of the most common iatrogenic consequences of orthodontic tooth movement. Many factors like gender, duration, orthodontic force and duration of orthodontic treatment have been implicated to cause EARR. METHODS: Pre- and post-treatment OPGs of 60 orthodontic patients (30 males and 30 females) who had undergone treatment with a single phase of fixed orthodontic therapy were randomly selected from institutional archives...
December 2016: Medical Journal, Armed Forces India
https://www.readbyqxmd.com/read/28045320/extrusion-of-severely-impacted-mandibular-first-molar-using-partial-orthodontics-and-temporary-anchorage-miniscrews
#18
R Rodriguez Y Baena, M S Lupi, G Ceriana, M F Sfondrini, A Scribante
BACKGROUND: This study reports a case in which a severely impacted lower first molar was recovered with a combined orthodontic therapy and minimally invasive oral surgery with special focus to patient's aesthetic demands. CASE REPORT: A 12-year- old female patient was complaining delayed eruption of mandibular right first molar. Radiographic exam showed a severe tooth impaction with a close relationship between tooth roots and mandibular nerve. As the patient refused full arches orthodontic treatment, a partial orthodontic approach was projected...
December 2016: European Journal of Paediatric Dentistry: Official Journal of European Academy of Paediatric Dentistry
https://www.readbyqxmd.com/read/28044198/meloxicam-medication-reduces-orthodontically-induced-dental-root-resorption-and-tooth-movement-velocity-a-combined-in-vivo-and-in-vitro-study-of-dental-periodontal-cells-and-tissue
#19
Christian Kirschneck, Matthias Meier, Kathrin Bauer, Peter Proff, Jochen Fanghänel
Non-steroidal anti-inflammatory drugs (NSAID) are used to alleviate pain sensations during orthodontic therapy but are also assumed to interfere with associated pseudo-inflammatory reactions. In particular, the effects of partially selective COX-2 inhibition over the constitutively expressed COX-1 (11:1) on periodontal cells and tissue, as induced by the NSAID meloxicam, remain unclear. We investigate possible adverse side-effects and potentially useful beneficial effects during orthodontic therapy and examine underlying cellular and tissue reactions...
January 3, 2017: Cell and Tissue Research
https://www.readbyqxmd.com/read/28024792/effects-of-local-platelet-rich-plasma-injection-on-the-rate-of-orthodontic-tooth-movement-in-a-rat-model-a-histomorphometric-study
#20
Ayşegül Güleç, Banu Çakırer Bakkalbaşı, Alev Cumbul, Ünal Uslu, Burçin Alev, Ayşen Yarat
INTRODUCTION: The aims of this study were to determine the effects of different concentrations of platelet-rich plasma (PRP) on alveolar bone density and orthodontic tooth movement. METHODS: Seventy-six rats were divided into 2 groups: a moderate concentration PRP injection group (n = 38) and a high concentration PRP injection group (n = 38). In each group, 5 time points were studied: 3, 7, 14, 21, and 60 days. Before orthodontic mesialization of the maxillary first molars, moderate and high concentrations of PRP were injected on the right sides of the molar buccal sulcus, and the left sides served as the controls...
January 2017: American Journal of Orthodontics and Dentofacial Orthopedics
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