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https://www.readbyqxmd.com/read/28181857/subconcussive-impact-dependent-increase-in-plasma-s100%C3%AE-levels-in-collegiate-football-players
#1
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
#2
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
#3
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
#4
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
#5
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
#6
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 of 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...
December 13, 2016: 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
#7
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
#8
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
#9
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
#10
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
#11
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
#12
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
#13
Terry Buckenheimer
No abstract text is available yet for this article.
2016: Today's FDA: Official Monthly Journal of the Florida Dental Association
https://www.readbyqxmd.com/read/27500893/appropriate-fabrication-method-for-vacuum-formed-mouthguards
#14
Fumi Mizuhashi, Kaoru Koide
AIM: The aim was to examine the influence of the heating temperature on the fabrication of vacuum-formed mouthguards. MATERIALS AND METHODS: Mouthguard sheets of 3.8 mm ethylene vinyl acetate were vacuum-formed on working models at three heating temperatures: 80, 100, and 120°C. The thickness of the mouthguard was measured at the labial surface of the central incisor, and the buccal and occlusal surfaces of the first molar. Differences in the thickness of the mouthguards were analyzed by two-way analysis of variance...
August 7, 2016: Dental Traumatology: Official Publication of International Association for Dental Traumatology
https://www.readbyqxmd.com/read/27477230/application-of-addition-cured-silicone-denture-relining-materials-to-adjust-mouthguards
#15
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 and eleven commercial mouthguard 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/27324048/effect-of-thermal-shrinkage-during-thermoforming-on-the-thickness-of-fabricated-mouthguards-part-2-pressure-formation
#16
Mutsumi Takahashi, Yoshihide Satoh, Shin-Ichi Iwasaki
BACKGROUND: The aim of this study was to examine the effect of thermal shrinkage, which occurs during thermoforming of ethylene vinyl acetate (EVA) sheets on the thickness of mouthguards fabricated by pressure formation. MATERIALS AND METHODS: Mouthguards were fabricated from 4.0-mm-thick EVA sheets by utilizing a pressure-forming machine. Two molding conditions were compared: The sheets were placed in the thermoforming machine with the sheet extrusion direction either vertical or parallel to the model's center line...
June 21, 2016: Dental Traumatology: Official Publication of International Association for Dental Traumatology
https://www.readbyqxmd.com/read/27295716/a-neuromuscular-fitted-dental-splint-does-not-improve-sprint-performance
#17
Henrike Fischer, Daniel Weber, Ralph Beneke
: Mouthguards protect against orofacial and dental injuries in sports. However, special fitted dental splints have been claimed to improve strength and speed and therefore enhance athletic performance. PURPOSE: To test effects of a neuromuscular fitted dental splint in comparison with a habitual verticalizing splint and a no-splint condition on cycling sprint performance in the Wingate Anaerobic Test. METHODS: 23 males (26.0 ± 2.0 yrs; 1...
June 13, 2016: International Journal of Sports Physiology and Performance
https://www.readbyqxmd.com/read/27257799/association-of-football-subconcussive-head-impacts-with-ocular-near-point-of-convergence
#18
Keisuke Kawata, Leah H Rubin, Jong Hyun Lee, Thomas Sim, Masahiro Takahagi, Victor Szwanki, Al Bellamy, Kurosh Darvish, Soroush Assari, Jeffrey D Henderer, Ryan Tierney, Dianne Langford
IMPORTANCE: An increased understanding of the relationship between subconcussive head impacts and near point of convergence (NPC) ocular-motor function may be useful in delineating traumatic brain injury. OBJECTIVE: To investigate whether repetitive subconcussive head impacts during preseason football practice cause changes in NPC. DESIGN, SETTING, AND PARTICIPANTS: This prospective, observational study of 29 National Collegiate Athletic Association Division I football players included baseline and preseason practices (1 noncontact and 4 contact), and postseason follow-up and outcome measures were obtained for each time...
July 1, 2016: JAMA Ophthalmology
https://www.readbyqxmd.com/read/27207582/effect-of-mouthguards-on-impact-to-the-craniomandibular-complex
#19
Yuto Tanaka, Tsuyoshi Tsugawa, Yoshinobu Maeda
BACKGROUND: The aim of this study was to investigate the effect of wearing a mouthguard and teeth-clenching on impact to the head and temporomandibular joint (TMJ) during a blow to the jaw. MATERIAL AND METHODS: A custom-made mouthguard was fabricated for five participants. A 4.1-N impact load was applied to the chin with a pendulum. Two acceleration sensors were attached to the forehead and left TMJ. The amplitudes and durations of the accelerations were obtained under five conditions: mouth-open without mouthguard; light teeth-clenching without mouthguard; maximum voluntary clenching (MVC) without mouthguard; mouth-open with mouthguard and MVC with mouthguard...
February 2017: Dental Traumatology: Official Publication of International Association for Dental Traumatology
https://www.readbyqxmd.com/read/27194626/the-effect-of-antagonist-tooth-contact-on-the-biomechanical-response-of-custom-fitted-mouthguards
#20
Crisnicaw Veríssimo, Aline Aredes Bicalho, Priscilla Barbosa Ferreira Soares, Daranee Tantbirojn, Antheunis Versluis, Carlos J Soares
BACKGROUND/AIM: Custom-fitted mouthguards are devices used to prevent dental injuries. The aim of this study was to verify the influence of the antagonist contact on the stresses and strains of the anterior teeth, shock absorption and displacement of EVA custom-fitted mouthguards during a horizontal impact. MATERIALS AND METHODS: Finite element models of human maxillary central incisors with and without a mouthguard for different occlusion conditions (with and without antagonist contact) were created based on tomography...
February 2017: Dental Traumatology: Official Publication of International Association for Dental Traumatology
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