This study was performed to investigate the effect of age on the efficiency of orthodontic tooth movement based on critical literature reviews, studies on a standardized orthodontic animal model and a non-invasive clinical investigation. A systematic review was performed on the optimum force for orthodontic tooth movement. It appeared that no evidence about the optimal force level in orthodontics could be extracted from literature. Therefore, a mathematic model that was developed to describe the relation between the rate of orthodontic tooth movement and the magnitude of the applied force. The results showed that the maximum rates of tooth movement in humans and in dogs are very similar. A threshold for force magnitude that would switch on tooth movement could not be defined. As there are general drawbacks in literature using rat as a model for experimental tooth movement, a newly designed experimental appliance for tooth movement in rats was proposed and evaluated. This rat model was used then ...
It is generally accepted that the effect of orthodontic tooth movement on the dental pulp in adolescents is reversible and that it has no long-lasting effect on pulpal physiology. However, it is not clear yet if the same conclusion is also valid for adult subjects. Thus, in two groups of rats, aged 6 and 40 weeks respectively, 3 molars at one side of the maxilla were moved together in a mesial direction with a standardized orthodontic appliance delivering a force of 10 cN. The contralateral side served as a control. Parasagittal histological sections were prepared after tooth movement for 1, 2, 4, 8, and 12 weeks. The pulp tissue was characterized for the different groups, with special emphasis on cell density, inflammatory cells, vascularity, and odontoblasts. Dimensions of dentin and the pulpal horns was determined and related with the duration of orthodontic force application and age ware evaluated. We found that neither in young nor in adult rats, force application led to long-lasting or
upper left abdominal pressure - MedHelps upper left abdominal pressure Center for Information, Symptoms, Resources, Treatments and Tools for upper left abdominal pressure. Find upper left abdominal pressure information, treatments for upper left abdominal pressure and upper left abdominal pressure symptoms.
The freeMD virtual doctor has found 29 conditions that can cause Tummy Cramps and Upper Left Sided Belly Tenderness. There are 2 common conditions that can cause Tummy Cramps and Upper Left Sided Belly Tenderness. There is 1 somewhat common condition that can cause Tummy Cramps and Upper Left Sided Belly Tenderness. There are 9 uncommon conditions that can cause Tummy Cramps and Upper Left Sided Belly Tenderness. There are 17 rare conditions that can cause Tummy Cramps and Upper Left Sided Belly Tenderness.
Purpose: The purpose of this study was to compare the effects of ibuprofen, a conventional NSAID, and celebrex, a COX-2 specific inhibitor, on tooth movement and root resorption. Methods: 49 female wistar rats were placed into 5 groups: (1) control (no dosage), (2) high dose celebrex (80mg/kg body weight), (3) high dose ibuprofen (50 mg/kg), (4) low dose celebrex (40 mg/kg), and (5) low dose ibuprofen (25 mg/kg). Rats were anesthetized by IP injection of Phenobarbital (0.1 mg/gm body weight), and a force of 80 grams was applied to the maxillary left first molars using a nickel titanium closed-coil spring. Tissue samples analyzed by light microscopy, and areas of resorption were quantified. Results: Ibuprofen and celebrex reduced resorption compared to control. High dose celebrex caused a reduction of tooth movement. Conclusions: There is minimal advantage in using selective COX-2 inhibitors to limit resorption; however, treatment time may be lengthened ...
Aims: Previous studies on maxillary molar distalization have usually concentrated on only one appliance and featured small sample sizes. The purpose of this retrospective study was two-fold: (1) to determine the skeletal, dental, and soft tissue effects of 3 molar distalization appliances, 2 of which do not depend upon patient compliance (ie, distal jet and Greenfield molar distalizing appliance) and 1 that does (ie, sagittal appliance combined with cervical headgear); and (2) to determine differences in treatment effects among the 3 appliances. Methods: Pretreatment and post-distalization cephalometric radiographs were obtained for each appliance (14 females and 11 males for the distal jet; 12 females and 13 males for the Greenfield molar distalizing appliance; and 17 females and 13 males for the sagittal appliance with headgear). Results: Pretreatment to transition evaluation showed significant distal movement of the first molars for the distal jet (3.4 mm), the Greenfield molar distalizing ...
Periodontal inflammation and alveolar bone remodeling during orthodontic tooth movement are considered regional reactions. However, how systemic immune responses are involved in this regional reaction remains unclear. In this study, we explored the systemic effects of orthodontic force by focusing on the mononuclear phagocyte system. Flow cytometric analysis showed that the percentage of inflammatory monocytes, in peripheral blood and in the monocyte reservoir spleen, decreased on days 1 and 3 and then recovered on day 7 after force application. Along with the systemic decrease of inflammatory monocyte percentage, the number of tartrate-resistant acid phosphatase-positive osteoclasts increased in the compression side of the periodontal tissue during orthodontic tooth movement. Systemic transfusion of enhanced green fluorescent protein-labeled inflammatory monocytes showed recruitment of these monocytes to the orthodontic force compression side of periodontal tissues. These monocytes were ...
The purpose of this study was to develop a new finite element method for simulating long-term tooth movements and to compare the movement process occurring in canine retraction using a T-loop spring having large bends and with that having small bends.. Orthodontic tooth movement was assumed to occur in the same manner as the initial tooth movement, which was controlled by the moment-to-force (M/F) ratios acting on the tooth. The M/F ratios were calculated as the reaction forces from the spring ends. For these M/F ratios, the teeth were moved based on the initial tooth movements, which were calculated by using the bilinear elastic model of the periodontal ligament. Repeating these calculations, the teeth were moved step by step while updating the M/F ratio.. In the spring with large bends, the canine at first moved bodily, followed by root distal tipping. The bodily movement was quickly achieved, but over a short distance. In the spring with small bends, the canine at first rotated and root ...
INTRODUCTION: Recently, miniscrews have been used to provide anchorage during orthodontic treatment, especially for incisor intrusion. Miniscrews during incisor intrusion are commonly used in implant orthodontics. Traditionally, effective incisor intrusion has been accomplished with J-hook headgear. In this study, we compared the effect of incisor intrusion, force vector, and amount of root resorption between implant orthodontics and J-hook headgear.. METHODS: Lateral cephalometric radiographs from 8 patients in the implant group and 10 patients in the J-hook headgear group were analyzed for incisor retraction. The estimated force vector was analyzed in the horizontal and vertical directions in both groups. Root resorption was also measured on periapical radiographs.. RESULTS: In the implant group, significant reductions in overjet, overbite, maxillary incisor to palatal plane, and maxillary incisor to upper lip were observed after intrusion of the incisors. In the J-hook headgear group, ...
The present invention provides methods and systems of repositioning teeth for use in orthodontic treatment, with particular applicability to removable elastic repositioning appliances. Such appliances may be challenged by traditional tooth movements which intrude the crown of the tooth or present tooth positions which reduce available points of purchase. These challenges may be overcome with a series of tooth movements in which a tooth is translated in a
It is the wish of every one of us to have clean and Crystal Clear swimming pool water. Clear water that you can almost see the bottom creates a distinct sense of safety and confidence. Parents also prefer clean swimming pools for their children.. Undoubtedly, there are numerous swimming pool cleaning products and devices, but it is not all of them that are efficient. However, nothing can match the best pressure side pool cleaner in terms of efficiency and convenience.. In our review to find the best pressure pool cleaner, Polaris Vac-Sweep 280 Pressure Side Pool Cleaner was a revelation. In second place is Pentair LL505G Kreepy Krauly Legend Pool Cleaner. The two side pool cleaners are highly efficient, easy-to-use, and durable. We must also mention that they come from reliable brands, and that is a source of confidence when buying. ...
Orthodontic force-induced osteogenic differentiation and bone formation at tension sites play a critical role in orthodontic tooth movement. However, the molecular mechanism underlying this phenomenon is poorly understood. In the current study, we investigated the involvement of the GSK-3β/β-catenin signaling pathway, which is critical for bone formation during tooth movement. We established a rat tooth movement model to test the hypothesis that orthodontic force may stimulate bone formation at the tension site of the moved tooth and promote the rate of tooth movement via regulation of the GSK-3β/β-catenin signaling pathway ...
Sigma-Aldrich offers abstracts and full-text articles by [Hong-Shi Li, Jie Ke, Gui-Zhi Zhao, Li-An Wu, Jun-Ping Kou, Hong-Chen Liu].
After initial sedation with the ketamine and xylazine cocktail previously described, the dogs were intubated and administered 1% to 1.5% isoflurane in oxygen at a rate of 1 L per minute. Vital signs were monitored throughout. Local anesthetic (2% lidocaine with 1:100,000 epinephrine) was administered at the surgical sites via regional infiltration and an inferior alveolar block. Both mandibular second premolars were sectioned, elevated, and extracted. On the experimental side, chosen using an electronically generated random number table, a full-thickness mucoperiosteal flap was elevated from the distal aspect of the third premolar to the mesial aspect of the first premolar. A vertical releasing incision was made at the mesial limit of the flap that went past the keratinized gingiva and into the level of the buccal mucosa ( Fig 1 , B ). The tissue was reapproximated with simple interrupted 4-0 vicryl resorbable sutures. A 12-fluted carbide bur was used to remove calculus and debris from the teeth ...
OBJECTIVES: To establish a rat model of a one-piece mandible using the principles of gingivoperiosteoplasty and guided bone regeneration to fuse the midline symphyseal area. MATERIALS & METHODS: Twenty-four Sprague-Dawley female rats were divided into two groups: 12 experimental and 12 control. Both groups were imaged using in vivo micro-computed tomography at baseline and at end point (5 months). The experimental group received regenerative surgery at the symphysis area; the control group received no treatment. Outcomes were evaluated by radiographic examination of gross and volumetric bony changes in the symphyseal region of interest marked between the mental foramina bilaterally and the two central incisors near the most coronal margin of the alveolar crests. These landmarks were chosen as they can be reproduced on the computed tomography images at baseline and end point. Histologic examination was performed on all samples at a level 5 mm apical to the alveolar bone crest. RESULTS: Radiologic ...
Principal Investigator:MATSUMOTO Mitsunari, Project Period (FY):1989 - 1991, Research Category:Grant-in-Aid for General Scientific Research (B), Research Field:小児・社会系歯学
Upper left side back pain can be caused by acute pancreatitis, Healthline says. Although the pain manifests mostly in the upper left side of the abdomen, it can spread to the left side of the back...
Pain in upper left back and chest - Jus dx w/lupus. Elev CRP hair loss low grade fevers at times. ANA 1:320. Pain in upper left back. Minor chest pain. Any ideas! ? Mgt. You may have inflammation or scarring in that area of the lung lining called the pleura. I would suggest a Chest X Ray. A virtual consult may be booked online.
Upper Left Abdominal Pain - FastMed: There are several conditions known to cause upper left abdominal pain. FastMed Urgent Care explores some of these conditions and their symptoms.
Provided is a method of removing carboxylic acids from effluent streams comprising the steps of pretreatment which may include chemical conditioning, clarification and filtering the effluent stream to remove suspended solid particles to provide a filtered stream. The filtered stream is subjected to membrane filtration to remove organic compounds having a molecular weight of greater than 150 while simultaneously permitting permeation of the membrane by the carboxylic acids to provide a membrane filtered stream. A reverse osmosis membrane is provided having a high pressure side and a low pressure side, and the membrane filtered stream is introduced to the high pressure side of the reverse osmosis membrane. The carboxylic acids are concentrated in the high pressure side of the reverse osmosis membrane. In a preferred embodiment, purified liquid (permeate) is neutralized and passed to the high pressure side of a second pass reverse osmosis membrane, producing a high-purity final permeate for plant reuse or
Methods and Materials: For Aim 1, different magnitudes (0 to 100 cN) of constant, continuous force were applied on the maxillary first molar of Sprague Dawley rats. The maxillae were collected for RNA and protein analysis, immunohistochemistry, and micro CT at different time points. For Aim 2, human subjects in different age groups (age 11-14 and 21-45) were recruited. Canine retraction was rendered with a constant force of 50 cN, and gingival crevicular fluid (GCF) was collected at different time points up to 28 days after retraction. The activity of inflammatory markers in GCF including IL-1β, CCL2, TNF-α, RANKL, and MMP-9 were measured using protein arrays. The rate of canine retraction in 28 and 56 days was measured on study models. For Aim 3, human subjects in different age groups (same as Aim 2) were recruited. Each subject in both age groups was randomly assigned to receive certain magnitude of constant force (50 to 200 cN) for canine retraction. The activity of different inflammatory ...
Orthodontic tooth movement is brought about by prolonged application of force on the attachment apparatus. This results in cellular and extracellular changes within the periodontium. As shown in numerous studies, tooth movement is achieved after the
A computational investigation is carried out to understand the film cooling performance and flow phenomenon on a pressure side of gas turbine airfoil. A specific geometry with multiple rows of cylindrical holes is considered on the pressure surface and opposite to which a flat surface is kept so as to avoid effect of imposed flow conditions. Meshing of the present model is done by using GAMBIT. Computations are carried out with K-epsilon Realizable model available in the commercial code FLUENT. The film cooling performance is discussed with flow structure followed by the effectiveness distribution on the pressure surface. The blowing ratio is varied from 0.4-2.4 and it is found that, at very low blowing ratio cases in the initial part of the pressure surface higher effectiveness values are observed but at higher blowing ratio these values become very low whereas close to the trailing edge side the effectiveness distribution is just the reverse. It was found that the optimum blowing ratio was ...
PubMed journal article: Maxillary molar distalization with a bone-anchored pendulum appliance. Download Prime PubMed App to iPhone, iPad, or Android
We make it easier for you to identify the source of your pain based on its location. Stomach Pain, Lower Left Abdominal Pain & Upper Left Abdominal Pain.
Question - Warm sensation in chest on upper left side, no pain or tingling. What is it?. Ask a Doctor about diagnosis, treatment and medication for Hypertension, Ask a Cardiologist
See how others experience pain in upper left and right quadrant of the stomach. Join the community to connect with others like you and learn about their real-world experiences.
I am having this upper left back pain since many years.Most of the times it used to silent , unless if accidentally a stretch came across to the effected area , in that case it starts with severe pain to the extent that i cant even move & my voice also changes with it. What i used to do was taking a pill of voltarin , vortex or bruffin & sleep for 2 - 3 hours which helped me alot in fighting with this problem. I consulted doctor he told me that its cold in your blood just keep that area warm & use deep heat massaging creams. I did but nothing happened , then i consulted to other physician he told me to have some back related exercises , nothing happened ...
greetings to all, new development in pain range. pain is in my upper left side almost directly under my ribcage. occasionaly reaching a leve7-8 , i.e. pretty intense. comes mostly after ieat, but ...
UNLABELLED The use of implants as anchorage for orthodontic forces seems to be a good alternative in partially edentulous patients needing orthodontic treatment. This study is aimed at assessing the performance and behavior of microtextured surface endosseous implants obtained by means of a double acid etching against orthodontic forces, as well as their adequacy to be used first as anchorage and later as fixtures for the definitive prosthesis. MATERIALS AND METHODS A total of 93 double acid-etched surface parallel wall implants (Osseotite(R) Implants, Implant Innovations Inc., Palm Beach, Florida, USA) were inserted in 38 partially edentulous patients prior to orthodontic treatment This was carried out by following two-stage surgery protocols in the maxilla as well as in the mandible. After a healing period of six months for the maxilla and four months for the mandible, the implants were used as anchorage for sliding, compression and traction orthodontic forces between 100 to 200 g by means of Ni-TI
Summary: Continuous tensile strain from the device changed the cell morphology and increased the expression of inflammatory and osteogenic gene. These effects were similar to those in the PDL during orthodontic tooth movement. ...
Tinlet = 47F. Toutlet = 87F. Flow rate = 550 fpm for 6 inch duct -- about 97 cfm with 90% velocity profile correction, or about 3.0 cfm/sf. This shows higher temperatures on the glazing all over as you would expect with the lower flow resulting in higher air temps through the collector.. The upper left corner hot spot appears somewhat larger, and there is more temperature difference between this hot corner and the lower down area.. How serious a performance hit this upper warmer area is hard (for me) to say. When the earlier version of the screen collector was run vertically, it had spots in the upper left and right corners that ran hotter than the exit area -- so, this is not strictly a function of the horizontal orientation. The performance penalty compared to a collector with perfectly even flow is basically that the hotter glazing up in the upper left corner loses more heat out the glazing to the air. As a rough estimate, if you said the hot spot corner is 12F hotter than it would be with ...
TAN S. D. , XIE R. , KLEIN-NULEND J. , VAN RHEDEN R. E. , BRONCKERS A. L. J. J. , KUIJPERS-JAGTMAN A. M. , VON DEN HOFF J. W. , MALTHA J. C. Journal of dental research 88(3), 255-260, 2009-03-01 参考文献35件 ...
My orthodontist recently suggested a device called Acceledent to speed up my orthodontic treatment. I dont know much about it, and it seems crazy that putting something that vibrates on my teeth will help them move, but hes convinced it works. Id love to get out of these braces as soon as possible, so is my orthodontist right - will Acceledent speed up my treatment?. Sincerely ...
The above plots show the binomial confidence intervals discussed last time for four different binary mushroom characteristics: GillSize (upper left), GillAtt (upper right), Bruises (lower left), and StalkShape (lower right). Specifically, these plots show the estimated probability that mushrooms with each of the two possible values for these variables are edible. Thus, the upper left plot shows that mushrooms with GillSize characteristic "b" ("broad") are much more likely to be edible than mushrooms with GillSize characteristic "n" ("narrow"). The other three plots have analogous interpretations: mushrooms with GillAtt value "a" ("attached") are more likely to be edible than those with value "f" ("free"), mushrooms with bruises (Bruises value "t") are more likely to be edible than those without (Bruises value "f"), and mushrooms with StalkShape value "t" ("tapering") are slightly more likely to be edible than those with value "e" ("enlarging"). Also, while the smaller slopes for GillAtt and ...
Sharp pain in the upper right side of my back - Ive been having this sharp pain on the upper right side of my back and it hurts to move it in any way. What are some possible causes? Is it serious? See a sportsmed spec. See a non-surgical sports medicine specialist. It could be muscle strain.
Attention: Either you have JavaScript disabled or your browser does not support JavaScript. To work properly, this site requires that you enable JavaScript.. ...
This patient came to the office with severe pain on the left side of his lower jaw, referred to the ear, very sensitive when he bites over the molars
Attention: Either you have JavaScript disabled or your browser does not support JavaScript. To work properly, this site requires that you enable JavaScript.. ...
is a comprehensive guide to the innovative Tip-Edge applicance, which introduces the concept of differential tooth movement into what is essentially a straight-wire bracket system. The second edition of this highly successful text explains the Tip-Edge technique from the first principles and now includes important advances in the field, in particular the introduction of the Plus bracket, an innovation which will greatly enhance the use of this rapidly emerging technique ...
My fiancé is suffering from pain on the left side below the ribs. The |b|X-ray revealed that his diaphragm has enlarged by a couple of inches|/b|. I wanted to know how is this possible and how serious is it? Whom should we approach for treatment?
It looks like that your dental bridge is high and due to this you are not able to close your mouth. Sometimes in such cases, the dentist do grind the bridge but that is very selective and is done for minor adjustments but it is not indicated to grind the natural teeth. So if the bridge is too high then he has to get it remade or get the bridge adjusted according your your occlusion. for more info on dental bridges you can check this article.... http://www.identalhub.com/articlecategory-crowns-bridges-22.aspx. ...
For 30 years, OrthoSource in Los Angeles has manufactured Orthodontic and Dental Products and Supplies. Buy Orthodontic Supplies Factory Direct and Save!
For 30 years, OrthoSource in Los Angeles has manufactured Orthodontic and Dental Products and Supplies. Buy Orthodontic Supplies Factory Direct and Save!
If you are a paid subscriber to Arch Peds or an AMA member, click on the Full Text link at the upper left or on the .pdf hyperlink at the upper left of the first page of the article ...
I completed the root canal on the upper left first molar 2 months ago,not often that I see a molar with such premolar like shape,found only 2 canals,one buccal and one palatal which joined 2 mm from apex.Slight overfill of cement
Affiliation:鶴見大学,歯学部,准教授, Research Field:矯正・小児・社会系歯学,Functional basic dentistry, Keywords:酒石酸耐性酸性ホスファターゼ,adult Wistar rats,骨芽細胞,tension side,osteoblast,tooth movement,破骨細胞,serum BGP,歯の移動,血清BGP, # of Research Projects:5, # of Research Products:0
Hello, I am a 36 year old male and have had hep c for about five years. For the past 9 months or so I have had a lot of pain in my abdominal upper right
Question - What is the cause for experiencing heat in upper right side body while on percocet?. Ask a Doctor about diagnosis, treatment and medication for Long term diabetes, Ask an Orthopaedic Surgeon
I have acute Hepatitis B. Still feeling this occasional stinging in my upper right ab. Been 2 months now since all the other symptoms went away. Is th...