tooth movement

..For stabilization, the corrected Class II unilateral molar relationship was maintained with a Nance button for 2 months. The results show that this newly developed device achieved bodily distal molar movement with minimum anchorage loss...

..75 degrees to the palatal plane and 4.25 degrees to the anterior basal plane. Palatal movements of the first molars were avoided. The proportion of molar distalization in the total movement was 73.53%...

..To evaluate the intra-arch displacements of the molars and the change in molar relationship following the use of a maxillary lip bumper combined with a bite plate...

..the early response of periodontal tissues to mechanical stress involves several metabolic changes that allow tooth movement. Many studies have evaluated these modifications through the analysis of various metabolites released into ..

..Possible future studies in these areas are also discussed, with particular emphasis on translation of fundamental knowledge to improve dental treatments...

The first experimental investigation of orthodontic tooth movement was published by Sandstedt in 1904-1905...

..interleukin-1 beta (IL-1 beta) and IL-1 receptor antagonist (IL-1RA) probably play a part in orthodontic tooth movement. Here, the force magnitudes and the area of force application in the compressed periodontal ligament (PDL) ..

Bone remodeling that occurs during orthodontic tooth movement is a biologic process involving an acute inflammatory response in periodontal tissues...

Corticotomy-assisted and osteotomy-assisted tooth movement involves surgical incisions through the alveolar bone...

The endothelin system is involved in orthodontic tooth movement (OTM). The aim of the study was to examine the role of ET-1, ET(A) and ET(B) in bone modeling during OTM in rats...

Orthodontic tooth movement is induced by mechanical stimuli and facilitated by remodeling of the periodontal ligament (PDL) and alveolar bone...

For orthodontic tooth movement, remodeling of the alveolar bone is maintained by a repeated process of bone resorption and new bone formation, controlled, respectively, by osteoclasts and osteoblasts...

..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 GCF levels of SP and interleukin-1beta (IL-1beta) ..

The purpose of this study was to investigate whether there are any differences in tooth movement or in the response of periodontal tissue to orthodontic force when the force is applied at different times of the day...

To test if leptin can be detected in the gingival crevicular fluid (GCF) around moving teeth, and to determine whether any changes occur during orthodontic tooth movement.

..The results of the intrusion could, according to the new hypothesis, be perceived as bending of the alveolar wall produced by the pull from Sharpey's fibres...

..crevicular fluid (GCF) levels of lysosomal cystein protease, cathepsin B (CAB), during human orthodontic tooth movement. The study included 10 patients (five males, mean age 22.5 +/- 2.8 years and five females, mean age 23.4 +/- 3...

..However, the effects of medications on the rate of orthodontic tooth movement have not been evaluated.

..Determining the correlation between cathepsin B and cystatin levels in gingival crevicular fluid at various times might provide a better understanding of both the dynamics and the metabolic stages of orthodontic tooth movement.

..To study the tissue reaction to orthodontic load in normal, high, and low bone turnover states...

To investigate the precise longitudinal change in the periodontal ligament (PDL) space width and three-dimensional tooth movement with continuous-force magnitudes in living rats.

..To study this problem, we studied orthodontic tooth movement in two groups of 30 rats, aged 6 wks and 9-12 mos, respectively...

Orthodontic forces deform the extracellular matrix and activate cells of the paradental tissues, facilitating tooth movement. Discoveries in mechanobiology have illuminated sequential cellular and molecular events, such as signal ..

..Numerous reports have described the pharmacological acceleration of tooth movement (TM) through the activation of osteoclasts...

..The objective of this study was to compare the locations of the centers of resistance (CRes) in the buccolingual (BL) and mesiodistal (MD) directions of the mandibular central incisors of 6 dogs...

To understand the molecular basis of early orthodontic tooth movement by looking at the expression of KI-67, runt-related transcription factor 2 (Runx2), and tumor necrosis factor ligand superfamily member 11 (RANKL) proteins.

..of this study was to observe the time-lapse changes in the rat periodontal ligament (PDL) during function and tooth movement. Under Nembutal anaesthesia, time-lapse changes in the thickness of the PDL of the first molars were ..

Accelerating the speed of orthodontic tooth movement should contribute to the shortening of the treatment period. This would be beneficial because long treatment times are a negative aspect of orthodontic treatment...

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This study was designed to determine whether or not high-frequency and low-magnitude vibration affects orthodontic tooth movement caused by magnetic or/and mechanical forces.

To test the hypothesis that there is no difference in the effect of different continuous moderate to very heavy forces on root resorption or amount of tooth movement.

This review describes the mechanical and biological signalling pathways during orthodontic tooth movement and provides an update of the current literature...

Root resorption is an unwanted effect of orthodontic tooth movement. Analysis of dentine proteins in gingival crevicular fluid (GCF) is a potentially safer method of quantifying root resorption compared with conventional radiographic ..

A single orthodontic activation lasting one hour can initiate tooth movement. The purpose of this study is to examine tooth movement, osteoclasts, and root resorption in rats following several one-hour activations...

..alveolar bone cells that change mechanical force into molecular events (signal transduction) and orthodontic tooth movement (OTM)...

..A novel method was to be developed to directly and accurately measure orthodontic tooth movement in a group of human volunteers. This was to be used to validate the finite element-based computer model...

..Our data support the hypothesis that these proinflammatory cytokines may play important roles in bone resorption after the application of orthodontic force...

Orthodontic tooth movement is achieved by mechanical loading; however, the biological mechanism involved in this process is not clearly understood owing to the lack of a suitable experimental model...

..Mechanical loading stimulates dentin matrix protein 1 (DMP1) in osteocytes in vivo. J Bone Min Res 2003;18(5):807-17]...

..We have studied the effects of sympathectomy and orthodontic tooth movement (OTM) on root resorption, immunocompetent cell recruitment, neuropeptide, neurokinin-1 receptor (NK1-R), and ..

..They were videotaped on days 1, 3, 5, 7, and 14 after experimental tooth movement and their directed face-grooming behavior was evaluated...

..The purpose of this study was to examine the behavior of the ERM during experimental tooth movement. Tooth movement was achieved in 12 male Sprague-Dawley rats (each, 120-200 g) by placing elastic bands between ..

Orthodontic tooth movement is achieved by the remodeling of periodontal ligament (PDL) and alveolar bone in response to mechanical loading and is believed to be mediated by several host mediators, such as cytokines...

b>Tooth movement and alveolar bone reaction after corticotomies have not been thoroughly examined. In this study, the effects of corticotomies on orthodontic tooth movement and alveolar bone reaction were investigated in dogs.

..MMPs) are enzymes that play a central role in periodontal ligament (PDL) space remodelling during orthodontic tooth movement. It has previously been shown that messenger RNA levels of MMP-13 increase significantly following the ..

..When no longer needed, the palatal implant is explanted and leaves no permanent deformation or defect after 2 or 3 weeks of healing...

..DESIGN: 'Split-mouth' design to perform orthodontic tooth movement in 64 six-month-old male rats divided into groups: no drug administration (n = 19), acute (n = 22) and chronic ..

Orthodontic tooth movement is dependent on efficient remodelling of bone...

It has been reported that oral surgery can accelerate orthodontic tooth movement. The purpose of this study was to evaluate the effects of alveolar surgery that undermines interseptal bone in orthodontic tooth movement.

..In addition, high-resolution microtomography of the alveolar bone/periodontal ligament (PDL) interface revealed that the actual surface of the alveolar bone was very rough, predisposing it to high local stress/strain peaks...

This study investigated the tooth movement of standardized simulated dentures processed by traditional closure or the new Rafael Saide (RS) tension system when cooled in the curing water itself or in curing water followed by bench storage ..

..ligament tissue is remodeled on both the tension and compression sides of moving teeth during orthodontic tooth movement. The present study was designed to clarify the hypothesis that the expression of MMP-8 and MMP-13 mRNA is ..

..study was to perform a meta-analysis on the literature concerning hyalinization in relation to experimental tooth movement in animals and humans...

..local administrations of prostaglandin E2 (PGE2) and 1,25-dihydroxycholecalciferol (1,25-DHCC) on orthodontic tooth movement in rats. Thirty-seven 6-week-old male Sprague-Dawley rats, weighing 160 +/- 10 g were used...

..to perform a meta-analysis of the literature concerning the optimal force or range of forces for orthodontic tooth movement. Over 400 articles both on human research and animal experiments were found in Medline and by hand searching ..

The question of whether the repair of an alveolar bony defect can be enhanced by orthodontic tooth movement was addressed.

The influence of bone metabolism on both the rate and the type of orthodontic tooth movement was investigated. A rat model in which high (n = 16) and low (n = 17) bone turnover was pharmacologically induced was used...

..75 x 7 mm) with the use of a sectional arch wire technique for orthodontic mesiodistal tooth movement, as assessed by the osseointegration of implants and tooth movement...

The ability of the periodontal ligament (PDL) to rapidly remodel is the basis of orthodontic tooth movement. During the tooth movement, matrix proteoglycans (PGs) may play important roles in spatial, mechanical and biological aspects for ..

..in evaluating the potential for proteoglycan metabolites, alongside other connective tissue metabolites, as biomarkers for assessing the deep-seated metabolic changes and as a diagnostic tool in monitoring orthodontic tooth movement.

..The efficacy and potency of microscrew implants in open bite treatment are discussed...

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Orthodontic tooth movement is achieved by (re)modeling processes of the alveolar bone, which are triggered by changes in the stress/strain distribution in the periodontium...

..The efficacy and potency of the microscrew implants aid mechanics in the nonextraction treatment of both labial and lingual treatments...

The biological response to orthodontic tooth movement has generally focused on reactions within the periodontal ligament (PDL), whereas less attention has been paid to the behavior of neighboring bone...

..9 mm) whereas the EOA created decreased overjet (0.9 mm). It can be concluded that the IOA was more effective than the EOA to create distal movement of the maxillary first molars...

..05). The results show that the zigzag elastic system is preferable, especially in hyperdivergent Class II division 1 subjects, as the use of such elastics does not cause an unfavourable effect on vertical jaw base relationship...

..Although cortical anchorage did not impede lower molar movement, it was no less effective in controlling molar movement with a partial appliance than was the fully banded Straight-wire appliance...

..The impact on the soft tissue profile was minimal with both appliances...

..Distalization and distal tipping of the second premolar on the distalization side was also reduced in this group. Incisors were retruded in both groups but were retruded more in the CHG-RP group...

..However, anchorage loss and individual variation have to be seriously considered. Bilaterally symmetrical effectiveness should not be relied upon...

..To study the 3D positional changes occurring to anchor molars of 37 patients treated with MBT appliance...

..The aim of this study was to assess dental anchorage qualities when the pendulum appliance is used for distal molar movement...

..The mini-implant, in conjunction with the lever-arm, is useful not only for absolute anchorage but also for anterior torque control during retraction in lingual orthodontic treatment...

..In conclusion, immediately loaded intraosseous screw-supported anchorage unit was successful in achieving sufficient molar distalization without major anchorage loss...

..The purposes of this study were to measure and compare the rates of canine retraction with titanium microimplant anchorage and conventional molar anchorage...

..To evaluate mandibular tooth position changes following treatment with a lip bumper and fixed appliance. Specifically, we aimed to determine how space was obtained to align crowded lower incisors...

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..To compare the effects of 3 molar distalization appliances, the intraoral bodily molar distalizer, the Keles slider, and the acrylic cervical occipital appliance, from the viewpoint of skeletal and soft tissue changes...

..CONCLUSIONS: Residual or unwanted forces produced during rapid maxillary expansion can be used to correct an upper dental midline shift...

..The author's Case Study guides the reader step by step to a successful result of the difficult orthodontic case...

..001) in this group, and thus the movement rate was two times higher. CONCLUSIONS: It is more effective to distalize the first maxillary molars before the second molars have erupted...

..In the mandibular arch the incisors were proclined to alleviate the severe crowding. Good overjet and overbite was achieved and has been maintained one year after completion of active orthodontic treatment...

..To determine the treatment effects of the Hyrax screw, when used with a lip bumper appliance, on the distalization of maxillary molars and the reciprocal effects on the anchor premolars and maxillary incisors...

..To compare the effects of Forsus Nitinol Flat Spring (FNFS) and Jasper Jumper (JJ) in the correction of Class II division I malocclusions...

..To investigate the amount and pattern of relapse of maxillary front teeth previously retained with a bonded retainer...

..05). Both anchor units similarly enhanced the mandibular first molar anchorage. However, particularly in the utility group, mandibular incisor anchorage control seemed to be inadequate...

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..There was, however, a substantial anchorage loss. Case selection is strongly recommended because significant anterior crowding, ectopic canines, or spacing can lead to significant anchorage loss...

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..Once placed, the NiTi Distalizer requires no adjustment and is easily put into passive mode when sufficient distalization has been accomplished...

..In order to achieve successful results, the side-effects of each treatment modality on dentofacial structures need to be taken into consideration...

..The control of these tooth movements has been clinically and radiologically substantiated...

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..A controlled tipping and an intrusive force were generated when the traction force was applied on the buccal surface of the maxillary second molar...

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..of maxillary incisor inclination and to compare the effect of labial vs lingual intrusive/extrusive forces on tooth movement. Basic anatomic and geometric hypotheses were assumed, ie, tooth length (crown and root), location of the ..

..steps leading from the application of orthodontic forces to a tooth and the remodeling events that accompany tooth movement are not well understood...

..IV. Molecular biology and genetics of orthodontic tooth movement and resorption...

..two problems presents investigators with the opportunity to address both problems with a common goal: That tooth movement could be better managed if a systematic scientific approach were coupled with the practice of orthodontics...

While orthodontic tooth movement occupies a prominent position in clinical dentistry, teeth are capable of extensive movement and displacement without the use of orthodontic appliances...

..embryonic and adolescent phases of mammary development, attempt to implicate PTHrP in multiple iterations of tooth movement/osteoclastic resorption, and explore the question of whether PTHrP deficiency in skin is associated with ..

..Our laboratory has established a reproducible rat animal model for tooth movement resulting in tooth resorption...

..a non- mineralized periodontal ligament space facilitated by HERS, we have performed gene array analyses in a tooth movement model featuring simultaneous periodontal tissue regeneration and periodontal ligament maintenance (Holliday et ..

..The expression of MEPE increases in response to mechanical stimulation several fold in vivo in the tooth movement model...

..three dimensional (3D) clinical orthodontic load systems will be controlled; the clinical outcomes based on tooth movement theory will be predicted; and the actual clinical outcomes in terms of treatment time, tooth movement, and ..

..Finally, because the periodontal ligament (PDL) is derived from the DF, the molecular regulation of osteoclastogenesis by the DF may suggest a similar role for the PDL in regulating alveolar bone loss seen in periodontitis. ..

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..turn, molecular treatment may someday be used to induce impacted teeth to erupt, as well as perhaps initiate tooth movement that often is required in orthodontics...

..Elucidation of these relationships will provide insight into soft tissue function as a factor in the etiology of dentofacial deformity as well as a determinant of post-treatment stability...

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..possibly by regulating concurrent events of tooth eruption; namely, bone resorption, bone formation and tooth movement. My laboratory has shown that there is an influx of mononuclear cells (monocytes?) into the DF prior to tooth ..

..It enables the orthodontic community to optimize the appliance design and better understand orthodontic tooth movement because tooth moves in response to the orthodontic force system...

..Finally, because the periodontal ligament (PDL) is derived from the DF, the molecular regulation of osteoclastogenesis by the DF may suggest a similar role for the PDL in regulating alveolar bone loss seen in periodontitis. ..