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https://www.readbyqxmd.com/read/28301714/formation-of-vacuum-formed-and-pressure-formed-mouthguards
#1
Fumi Mizuhashi, Kaoru Koide
BACKGROUND/AIM: The method used to form mouthguards should be carefully selected in order to obtain their full preventive benefits. The aim of this study was to examine the differences of mouthguard characteristics according to the forming methods. MATERIALS AND METHODS: Mouthguard sheets of 3.8-mm ethylene vinyl acetate were vacuum-formed and pressure-formed on a working model. The sheets were formed when heating causing them to displace 15 mm from baseline. Mouthguard thickness was measured at the labial surface of the central incisor, the buccal surface of the first molar, and the occlusal surface of the first molar...
March 16, 2017: Dental Traumatology: Official Publication of International Association for Dental Traumatology
https://www.readbyqxmd.com/read/28296061/influence-of-continuous-use-of-a-vacuum-forming-machine-for-mouthguard-thickness-after-thermoforming
#2
Mutsumi Takahashi, Yoshiaki Araie, Yoshihide Satoh, Shin-Ichi Iwasaki
Mouthguards can reduce the risk of sports-related injuries such as tooth fracture or avulsion, but the sheet material and thickness have a large effect on their efficacy and safety. The aim of this study was to investigate the effect of the continuous use of a vacuum-forming machine on mouthguard thickness MATERIALS AND METHODS: Ethylene vinyl acetate sheets and olefin copolymer sheets were used for thermoforming with a vacuum-forming machine. The working model was trimmed to a height of 23 mm at the maxillary central incisor and 20 mm at maxillary first molar...
March 15, 2017: Dental Traumatology: Official Publication of International Association for Dental Traumatology
https://www.readbyqxmd.com/read/28294184/crystallization-and-hardening-of-poly-ethylene-co-vinyl-acetate-mouthguards-during-routine-use
#3
Ryoko Kuwahara, Ryotaro Tomita, Natsumi Ogawa, Kazunori Nakajima, Tomotaka Takeda, Hiroki Uehara, Takeshi Yamanobe
Mouthguards (MGs) made from poly(ethylene-co-vinyl acetate) (EVA) are widely used in contact sports to prevent injuries such as breaking teeth and lip lacerations and to reduce brain concussion. However, the changes in morphology and the molecular mobility of EVA, which can affect its physical properties during practical usage, have not been precisely examined. Therefore, we attempted to determine the main factors which lead to changes in MG performance after one season of practical use by high school rugby players...
March 15, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28268724/development-of-a-head-impact-monitoring-intelligent-mouthguard
#4
Daniel S Hedin, Paul L Gibson, Adam J Bartsch, Sergey Samorezov
The authors present the development and laboratory system-level testing of an impact monitoring "Intelligent Mouthguard" intended to help with identification of potentially concussive head impacts and cumulative head impact dosage. The goal of Intelligent Mouthguard is to provide an indicator of potential concussion risk, and help caregiver identify athletes needing sideline concussion protocol testing. Intelligent Mouthguard may also help identify individuals who are at higher risk based on historical dosage...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28254746/what-strategies-can-be-used-to-effectively-reduce-the-risk-of-concussion-in-sport
#5
REVIEW
Carolyn A Emery, Amanda M Black, Ash Kolstad, German Martinez, Alberto Nettel-Aguirre, Lars Engebretsen, Karen Johnston, James Kissick, David Maddocks, Charles Tator, Mark Aubry, Jiří Dvorák, Shinji Nagahiro, Kathryn Schneider
AIM OR OBJECTIVE: To examine the effectiveness of concussion prevention strategies in reducing concussion risk in sport. DESIGN: Systematic review according to the PRISMA (Preferred Reporting Items for Systematic Reviews and Meta-Analysis) guidelines. DATA SOURCES: Eleven electronic databases searched and hand-search of references from selected studies. ELIGIBILITY CRITERIA FOR SELECTING STUDIES: The following were the study inclusion criteria: (1) contained original human research data; (2) investigated an outcome of concussion or head impact; (3) evaluated a concussion prevention intervention; (4) included sport participants; (5) analytical study designand (6) peer-reviewed...
March 2, 2017: British Journal of Sports Medicine
https://www.readbyqxmd.com/read/28231638/comparison-of-the-shock-absorption-capacities-of-different-mouthguards
#6
Melina Simonetta Bochnig, Min-Jung Oh, Theresa Nagel, Fred Ziegler, Paul-Georg Jost-Brinkmann
BACKGROUND/AIMS: In this in vitro study the protective qualities of different mouthguard types were examined during small hard object collisions. The aim was to investigate inconclusive aspects of hard inserts, nylon nets and air spaces as reinforcements in the anterior region and the protection qualities of ethylene vinyl acetate (EVA). MATERIALS AND METHODS: Five different mouthguards with a labial thickness between 2 mm and 11 mm made of materials of varying stiffness were investigated...
February 23, 2017: Dental Traumatology: Official Publication of International Association for Dental Traumatology
https://www.readbyqxmd.com/read/28226912/development-of-a-head-impact-monitoring-intelligent-mouthguard
#7
Daniel S Hedin, Paul L Gibson, Adam J Bartsch, Sergey Samorezov, Daniel S Hedin, Paul L Gibson, Adam J Bartsch, Sergey Samorezov, Adam J Bartsch, Paul L Gibson, Sergey Samorezov, Daniel S Hedin
The authors present the development and laboratory system-level testing of an impact monitoring "Intelligent Mouthguard" intended to help with identification of potentially concussive head impacts and cumulative head impact dosage. The goal of Intelligent Mouthguard is to provide an indicator of potential concussion risk, and help caregiver identify athletes needing sideline concussion protocol testing. Intelligent Mouthguard may also help identify individuals who are at higher risk based on historical dosage...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28181857/subconcussive-impact-dependent-increase-in-plasma-s100%C3%AE-levels-in-collegiate-football-players
#8
Keisuke Kawata, Leah H Rubin, Masahiro Takahagi, Jong Lee, Thomas Sim, Victor Szwanki, Al Bellamy, Ryan Tierney, Dianne Langford
The current study investigates whether repetitive subconcussive impacts cause changes in plasma S100β levels, and further to test the associations between S100β changes and frequency/magnitude of impacts sustained. This prospective study of 22 Division-I collegiate football players included baseline and pre-season practices [1 helmet-only and 4 full-gear]. Blood samples were obtained and assessed for S100β levels at baseline and pre-post practices; symptom scores were assessed at each time point. An accelerometer-embedded mouthguard was employed to measure number of impacts (hits), peak linear acceleration (PLA), and peak rotational acceleration (PRA)...
February 9, 2017: Journal of Neurotrauma
https://www.readbyqxmd.com/read/28167165/the-use-of-a-custom-made-mouthguard-stabilizes-the-electromyographic-activity-of-the-masticatory-muscles-among-karate-d%C3%A5-athletes
#9
Gilsane Raquel, Eli Luis Namba, Daniel Bonotto, Edvaldo Antônio Ribeiro Rosa, Paula Cristina Trevilatto, Maria Ângela Naval Machado, Michelle Santos Vianna-Lara, Luciana Reis Azevedo-Alanis
AIMS: To analyze and compare the electromyographic activity of the temporal (anterior portion) and masseter muscles among Karate-Dō athletes before and after training, with and without the use of a mouthguard. METHODS: Twenty athletes (14 males and 6 females) with a mean age of 23.7 ± 7.5 years participated. They had surface electromyography recordings taken of their bilateral temporal and masseter muscles before and after training under the following conditions: no mouthguard, with a ready-made mouthguard, and with a custom-made mouthguard...
January 2017: Journal of Bodywork and Movement Therapies
https://www.readbyqxmd.com/read/28160512/prevalence-of-dental-trauma-and-use-of-mouthguards-in-professional-handball-players
#10
Lana Bergman, Slađana Milardović Ortolan, Davor Žarković, Joško Viskić, Dražen Jokić, Ketij Mehulić
BACKGROUND / AIM: Published data about orofacial injuries and mouthguard use by professional handball players is scarce. The aim of this study was to investigate the prevalence of orofacial trauma and mouthguard use in professional handball players. MATERIALS AND METHODS: Data were collected among 100 professional handball players through a questionnaire which contained 17 questions about age, experience in playing handball, playing position, orofacial trauma experience during the past 12 months, type of injury and mouthguard use...
February 4, 2017: Dental Traumatology: Official Publication of International Association for Dental Traumatology
https://www.readbyqxmd.com/read/28116877/prevalence-of-dental-injuries-and-awareness-regarding-mouthguards-among-basketball-players-and-coaches
#11
Murat Tiryaki, Gunce Saygi, Sevda Ozel Yildiz, Zuhal Yildirim, Ugur Erdemir, Taner Yucel
BACKGROUND: Dental injuries are frequently occurred by an impact to facial area among basketball players. In fact, mouthguards are able to absorb the power of impacts and protect teeth from excessive forces, it is crucial for players even at training to wear mouthguards. To determine the prevalence of dental injuries and investigate the awareness about the use of mouthguards among basketball players and coaches. METHODS: A 14-item questionnaire was designed and tested among licensed basketball players and coaches, all of whom were continuously exposed to the risk of dental injuries...
January 23, 2017: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/27960037/influence-of-working-model-angle-on-the-formation-of-a-pressure-formed-mouthguard
#12
Fumi Mizuhashi, Kaoru Koide, Ryo Mizuhashi
BACKGROUND/AIM: Custom-made mouthguards are fabricated on working models. However, the influence of the working model to the mouthguard characteristics has not been clearly established. The aim of this study was to examine the influence of the angle of the working model on the formation of a pressure-formed mouthguard. MATERIALS AND METHODS: Mouthguard sheets of 3.8 mm ethylene vinyl acetate were pressure-formed onto working models. The angle of the working model formed by the labial surface of the central incisor and the base of the working model was set at 85°, 90°, and 95°...
December 13, 2016: Dental Traumatology: Official Publication of International Association for Dental Traumatology
https://www.readbyqxmd.com/read/27960035/shape-change-in-mouthguard-sheets-during-thermoforming-part-2-effect-of-the-anteroposterior-position-of-the-model-on-mouthguard-thickness
#13
Mutsumi Takahashi, Yoshiaki Araie, Yoshihide Satoh, Shin-Ichi Iwasaki
BACKGROUND/AIM: Mouthguards can reduce the risk of sports-related injuries, but the sheet material and thickness have a large effect on their efficacy and safety. The aim of this study was to investigate the effect of model position in the molding machine on the reduction in mouthguard thickness. MATERIALS AND METHODS: Ethylene vinyl acetate sheets and olefin copolymer sheets were used for thermoforming by a pressure- or a vacuum-forming machine. The working model was trimmed to the height of 25 mm at the maxillary central incisor and 20 mm at maxillary first molar...
April 2017: Dental Traumatology: Official Publication of International Association for Dental Traumatology
https://www.readbyqxmd.com/read/27904091/erratum-to-application-of-addition-cured-silicone-denture-relining-materials-to-adjust-mouthguards
#14
Shintaro Fukasawa, Hiroshi Churei, Ruman Uddin Chowdhury, Takahiro Shirako, Sharika Shahrin, Abhishekhi Shrestha, Takahiro Wada, Motohiro Uo, Hidekazu Takahashi, Toshiaki Ueno
The purposes of this study were to examine the shock absorption capability of addition-cured silicone denture relining materials and the bonding strength of addition-cured silicone denture relining materials and a commercial mouthguard material to determine its applicability to mouthguard adjustment. Two addition-cured silicone denture relining materials were selected as test materials. The impact test was applied by a free-falling steel ball. On the other hand, bonding strength was determined by a delamination test...
2016: Dental Materials Journal
https://www.readbyqxmd.com/read/27875057/national-athletic-trainers-association-position-statement-preventing-and-managing-sport-related-dental-and-oral-injuries
#15
Trenton E Gould, Scott G Piland, Shane V Caswell, Dennis Ranalli, Stephen Mills, Michael S Ferrara, Ron Courson
OBJECTIVE: To provide athletic trainers, health care professionals, and all those responsible for the care of athletes with clinical recommendations for preventing and managing sport-related dental and oral injuries. BACKGROUND: Participation in competitive sports continues to grow at both the interscholastic and intercollegiate levels. Therefore, exposure to, and the incidence of athletic-related injury, including orofacial injury, will also likely increase. At the time of this writing, the leading governing agencies for interscholastic (National Federation of State High School Associations) and intercollegiate (National Collegiate Athletic Association) sports require only protective orofacial equipment (eg, mouthguards) for 5 and 4, respectively, of their sanctioned sports...
October 2016: Journal of Athletic Training
https://www.readbyqxmd.com/read/27642856/do-neuromuscular-dentistry-designed-mouthguards-enhance-dynamic-movement-ability-in-competitive-athletes
#16
Joshua A Cotter, Steven T Jamison, Sarah A Schloemer, Ajit M W Chaudhari
The purpose of this study was to examine the effect of a neuromuscular dentistry-designed mouthguard (NMDD) on dynamic movement ability. Forty-two competitive athletes (8 females, 21.9 ± 2.9 yrs, 66.8 ± 18.8 kg, 1.68 ± 0.11 m; 34 males, 22.8 ± 4.8 yrs, 77.4 ± 12.7 kg, 1.78 ± 0.08 m) with greater than two years' experience in their designated sport were enrolled in the study. Participants completed the Functional Movement Screen (FMS), modified Star Excursion Balance Test (mSEBT), and a single leg landing (SLL) task...
September 6, 2016: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/27622524/dental-and-general-trauma-in-team-handball
#17
Mateja Petrović, Sebastian Kühl, Martina Šlaj, Thomas Connert, Andreas Filippi
Handball has developed into a much faster and high-impact sport over the past few years because of rule changes. Fast sports with close body contact are especially prone to orofacial trauma. Handball belongs to a category of sports with medium risk for dental trauma. Even so, there is only little literature on this subject. The aim of this study was to examine the prevalence and the type of injuries, especially the occurrence of orofacial trauma, habits of wearing mouthguards, as well as degree of familiarity with the tooth rescue box...
2016: Swiss Dental Journal
https://www.readbyqxmd.com/read/27608354/a-cheap-fix-for-an-expensive-problem-the-use-of-a-thermoplastic-mouthguard-to-reduce-the-risk-of-dental-trauma-during-orotracheal-intubation
#18
E B Bowcock, P Goonan
No abstract text is available yet for this article.
September 2016: Anaesthesia and Intensive Care
https://www.readbyqxmd.com/read/27599279/mouthguard-usage-by-middle-and-high-school-student-athletes-in-houston-texas
#19
Michael B Miller, Cleverick D Johnson, Ralph A Cooley, Holly Sharp, Thomas A Servos
This survey recorded utilization levels of stock and custom mouthguards among middle and high school athletes in a US metropolitan area and gathered data on the prevalence of traumatic injuries that have occurred as a consequence of school-based athletic competition. The data also included reasons for the athletes' noncompliance. A 23-question, online survey form was developed. A geographically diverse list of public and private schools in the Houston metropolitan area was identified and included 30 public middle schools, 32 public high schools, 8 private middle schools, and 10 private high schools...
September 2016: General Dentistry
https://www.readbyqxmd.com/read/27526522/mouthguards
#20
Terry Buckenheimer
No abstract text is available yet for this article.
2016: Today's FDA: Official Monthly Journal of the Florida Dental Association
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