Academic literature on the topic 'Fatigue Resistant Device'

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Journal articles on the topic "Fatigue Resistant Device"

1

Elkordy, Sherif A., Mona M. Salah Fayed, Khaled H. Attia, and Amr M. Abouelezz. "Complications encountered during Forsus Fatigue Resistant Device therapy." Dental Press Journal of Orthodontics 25, no. 3 (2020): 65–72. http://dx.doi.org/10.1590/2177-6709.25.3.065-072.oar.

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ABSTRACT Introduction: Fixed functional appliances are non-compliant solutions to Class II malocclusion treatment. The clinician, however, should be careful of unexpected complications during the therapy. Methods: 58 female adolescents who presented with Class II malocclusion due to deficient mandible were treated with Forsus Fatigue Resistant Device (FFRD) therapy until an overcorrection to an edge to edge incisor relationship was achieved. Results: Incisor relationship and overjet were corrected successfully in all the subjects. Twenty-two patients had a complications-free treatment, while several complications were encountered with the remaining 36 subjects. In particular, mandibular canine rotation and development of posterior crossbites were the most common complications, with percentages of 51.7% and 25.9% respectively. Other complications included the breakage and shearing of the extraoral tubes of the first molar bands, and excessive intrusion of the upper first molars. Conclusions: FFRD is an efficient appliance for treatment of Class II malocclusion; however, different complications were encountered during the appliance therapy. A focus on taking precautions and applying preventive measures can help to avoid such problems, reducing the number of emergency appointments and enhancing the treatment experience with the appliance.
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2

Bowman, Amy C., Humam Saltaji, Carlos Flores-Mir, Brian Preston, and Sawsan Tabbaa. "Patient experiences with the Forsus Fatigue Resistant Device." Angle Orthodontist 83, no. 3 (2012): 437–46. http://dx.doi.org/10.2319/081112-647.1.

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ABSTRACT Objective: To investigate patients' experiences with the Forsus Fatigue Resistant Device (FFRD). Methods: This was a survey focused on patient's comprehensive experience with FFRD, both initially and after several months of wear, including the patient's overall impression of the appliance. The survey was administered to 70 patients wearing FFRD in both university and private practice settings. Results: A high percentage (81.5%) reported a neutral to favorable experience with FFRD; 89.8% reported growing accustomed to the appliance within 4 weeks. The majority of those who had previously worn rubber bands found FFRD to be “easier.” Cheek irritation was the most serious side effect (about 50%). Cheek irritation and other negative effects generally decreased over time. Conclusions: The FFRD is relatively well accepted by patients. Most patients experience some discomfort and functional limitations; however, the effect generally diminishes with time, and patients adapt to the appliance. Practitioners should be especially vigilant about problems with cheek irritation.
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3

Aslan, Belma I., Ebru Kucukkaraca, Cagri Turkoz, and Mufide Dincer. "Treatment effects of the Forsus Fatigue Resistant Device used with miniscrew anchorage." Angle Orthodontist 84, no. 1 (2013): 76–87. http://dx.doi.org/10.2319/032613-240.1.

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ABSTRACT Objective: To evaluate the dentofacial effects of the Forsus Fatigue Resistant Device (FRD) used with miniscrew anchorage (FRDMS) and compare them with those of conventional FRD and an untreated Class II control group. Materials and Methods: The sample consisted of 48 Class II subjects. Sixteen patients (13.68 ± 1.09 years of age) were treated with FRDMS, whereas 17 subjects (14.64 ± 1.56 years of age) were treated with only FRD. Also, a control sample of 15 untreated Class II subjects (14.13 ± 1.50 years of age) was constructed. Angular and linear measurements were made on 96 lateral cephalograms. Paired t, one-way analysis of variance, and Tukey tests were used for statistical analysis. Results: Class I molar relationship and overjet correction were achieved in an average period of 6.5 ± 1.97 and 5.5 ± 1.80 months in the FRDMS and FRD groups, respectively. No skeletal effect was determined in both treatment groups. Greater overbite correction was found in the FRD group. Retrusion and extrusion of maxillary incisors, distalization of maxillary molars, and extrusion of mandibular molars were significant in both treatment groups. Labial tipping of mandibular incisors was significantly greater in the FRD group than in the FRDMS group. Conclusion: Overjet and molar correction was totally dentoalveolar. Unfavorable labial tipping of mandibular incisors was effectively minimized with the usage of miniscrews.
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4

Jonnalagadda, VenkataNaga Sravanthi, and SB V. Ramana Reddy. "Treatment of Class II division 1 malocclusion using forsus fatigue-resistant device." International Journal of Orthodontic Rehabilitation 9, no. 4 (2018): 168. http://dx.doi.org/10.4103/ijor.ijor_19_18.

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5

Sood, S., Om Kharbanda, R. Duggal, M. Sood, and S. Gulati. "Muscle Response during Treatment of Class II Division 1 Malocclusion with Forsus Fatigue Resistant Device." Journal of Clinical Pediatric Dentistry 35, no. 3 (2011): 331–38. http://dx.doi.org/10.17796/jcpd.35.3.5v86511u4h1mw144.

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Purpose: To evaluate the muscle response in order to determine the mechanism of neuromuscular adaptations with Forsus Fatigue Resistant DeviceTM which has greater elasticity and flexibility; allows greater range of movement of mandible; is available in pre fabricated assembly of springs, tubes and rods and is a simple, effective and reliable corrective appliance that benefits not only growing patients but also malocclusions that previously required extractions, headgears and surgery. Method: Bilateral EMG activity from anterior temporalis and masseter muscles was monitored longitudinally on 10 young growing females with Class II Division 1 malocclusion to determine changes in postural, swallowing, and maximal voluntary clenching over an observation period of 6 months. Results: There was a significant decrease in the muscle activity at one month after Forsus Fatigue Resistant DeviceTM insertion during swallowing of saliva and maximal voluntary clenching which gradually returned to pre treatment levels at the end of six months.Conclusion: This study suggests that Forsus Fatigue Resistant DeviceTM should be given for at least six months to allow for adequate neuromuscular adaptations to occur for long term stability of the result.
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6

Aras, Isil, and Aylin Pasaoglu. "Class II subdivision treatment with the Forsus Fatigue Resistant Device vs intermaxillary elastics." Angle Orthodontist 87, no. 3 (2016): 371–76. http://dx.doi.org/10.2319/070216-518.1.

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ABSTRACT Objective: To compare the effectiveness of comprehensive fixed appliance treatments implemented in combination with Forsus or intermaxillary elastics in Class II subdivision subjects. Materials and Methods: Twenty-eight Class II subdivision patients were allocated to two groups using matched randomization: Forsus group (mean age, 14.19 ± 1.02 years) and elastics group (mean age, 13.75 ± 1.16 years). Patients received fixed appliance therapy in combination with either Forsus or intermaxillary elastics. The study was conducted on lateral cephalograms and digital models acquired before orthodontic treatment and 10–12 weeks after the fixed appliances were removed. Results: The treatment phase comprising the use of Forsus (4.53 ± 0.91 months) was significantly shorter compared with elastics application (6.85 ± 1.08 months). This was also true for comparing duration of overall comprehensive treatment in both groups. Extrusion and palatal tipping of maxillary incisors and clockwise rotation of the occlusal plane were greater in the elastics group (P < .05). The mandibular incisors were proclined in both groups (P < .001), but no significant difference was observed between groups (P > .05). The mandibular incisors showed intrusion in the Forsus group and extrusion in the elastics group; the difference between groups was significant (P < .05). Overbite was decreased in both groups (P < .001) in similar amounts. Improvement in overjet, mandibular midline deviation, and correction of molar relationship on the Class II side were greater in the Forsus group (P < .05). Conclusion: Forsus is more effective for correcting Class II subdivision malocclusion in a shorter treatment period with minimal patient compliance required.
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7

Li, Hegang, Xun Ren, Yun Hu, and Lijun Tan. "Effects of the Forsus Fatigue-resistant Device on Skeletal Class II Malocclusion Correction." Journal of Contemporary Dental Practice 21, no. 1 (2020): 105–12. http://dx.doi.org/10.5005/jp-journals-10024-2748.

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8

Testarelli, L., N. M. Grande, G. Plotino, et al. "Cyclic Fatigue of Different Nickel-Titanium Rotary Instruments: A Comparative Study." Open Dentistry Journal 3, no. 1 (2009): 55–58. http://dx.doi.org/10.2174/1874210600903010055.

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Since the introduction of nickel-titanium alloy to endodontics, there have been many changes in instrument design, but no significant improvements in the raw material properties, or enhancements in the manufacturing process. Recently, a new method to produce nickel-titanium rotary (NTR) instruments has been developed, in an attempt to obtain instruments that are more flexible and resistant to fatigue. NTR instruments produced using the process of twisting (TF, SybronEndo, Orange, CA) were compared to NTR instruments from different manufacturers produced by a traditional grinding process. The aim of the study was to investigate whether cyclic fatigue resistance is increased for TF NTR files. Tests were performed with a cyclic fatigue device that evaluated cycles to failure of rotary instruments inside curved artificial canals. Results indicated that size 06-25 TF instruments showed a significant increase (P< .05). In the mean number of cycles to failurewhen compared to the other tested 06-25 NTR. Hence, it can be concluded that size 06-25 TF NTR instruments were found to be significantly more resistant to fatigue than those produced with the traditional grinding process.
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9

Goyal, Varun, and US Krishna Nayak. "Treatment of division II malocclusion in young adult with Forsus™ fatigue-resistant device." Indian Journal of Dental Research 23, no. 2 (2012): 289. http://dx.doi.org/10.4103/0970-9290.100444.

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10

Ren, Yongyuan, Jiangna Guo, Ziyang Liu, et al. "Ionic liquid–based click-ionogels." Science Advances 5, no. 8 (2019): eaax0648. http://dx.doi.org/10.1126/sciadv.aax0648.

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Gels that are freeze-resistant and heat-resistant and have high ultimate tensile strength are desirable in practical applications owing to their potential in designing flexible energy storage devices, actuators, and sensors. Here, a simple method for fabricating ionic liquid (IL)–based click-ionogels using thiol-ene click chemistry under mild condition is reported. These click-ionogels continue to exhibit excellent mechanical properties and resilience after 10,000 fatigue cycles. Moreover, due to several unique properties of ILs, these click-ionogels exhibit high ionic conductivity, transparency, and nonflammability performance over a wide temperature range (−75° to 340°C). Click-ionogel–based triboelectric nanogenerators exhibit excellent mechanical, freeze-thaw, and heat stability. These promising features of click-ionogels will promote innovative applications in flexible and safe device design.
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