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Ho-Jung Son, Ji-Young Sim, Ji-Hwan Kim, Woong-Chul Kim
BACKGROUND/AIMS: Previous studies have compared the thickness of the device with and without grooves. The result was a difference in thickness of the device along the groove. The aim of this study, was to assess the differences in thickness of mouthguards that result from different groove shapes of ethylene vinyl acetate sheets used to make these appliances. MATERIALS AND METHOD: Mouthguards were made using a 3-dimensional printer, and produced by softening 4-mm transparent circular sheets...
May 17, 2018: Dental Traumatology: Official Publication of International Association for Dental Traumatology
Kun Liang, Simone Carmone, Davide Brambilla, Jean-Christophe Leroux
Despite the burgeoning interest in three-dimensional (3D) printing for the manufacture of customizable oral dosage formulations, a U.S. Food and Drug Administration-approved tablet notwithstanding, the full potential of 3D printing in pharmaceutical sciences has not been realized. In particular, 3D-printed drug-eluting devices offer the possibility for personalization in terms of shape, size, and architecture, but their clinical applications have remained relatively unexplored. We used 3D printing to manufacture a tailored oral drug delivery device with customizable design and tunable release rates in the form of a mouthguard and, subsequently, evaluated the performance of this system in the native setting in a first-in-human study...
May 2018: Science Advances
Hidesuke Tada, Natsumi Fujiwara, Takaaki Tsunematsu, Yoshiko Tada, Rieko Arakaki, Naofumi Tamaki, Naozumi Ishimaru, Yasusei Kudo
Recurrent aphthous stomatitis (RAS) is the most common inflammatory ulceration in the oral mucosa of otherwise healthy individuals and is often accompanied by severe pain. However, the etiology of RAS is not completely understood, and currently, no therapy can completely prevent RAS recurrence. In our clinical experience, we noticed that patients using a night guard, which is often used for bruxism treatment, did not develop RAS. Therefore, the aim of this study was to determine whether mouthguard use can suppress RAS development...
October 2017: Clinical and Experimental Dental Research
Michael S Green, Amanda K Benson, Tyler D Martin
PURPOSE: This study investigated the physiological effects of wearing a mouthguard during submaximal treadmill exercise. METHOD: Twenty-four recreationally active males (Mage = 21.3 ± 2.4 years, Mheight = 1.78 ± 0.06 m, Mweight = 81.9 ± 10.6 kg, Mbody mass index = 25.8 ± 3.4 kg·m-2 ) performed incremental, continuous exercise at 2, 4, 6, and 8 mph (3.2, 6.4, 9.7, 12.9 kph) for 5 min at each speed on a motor-driven treadmill on 2 separate occasions in a randomized, crossover, counterbalanced design while wearing or not wearing a self-adaptable "boil and bite" mouthguard...
April 25, 2018: Research Quarterly for Exercise and Sport
Valessa F Carvalho, Priscilla Bf Soares, Crisnicaw Verissimo, Roberto S Pessoa, Antheunis Versluis, Carlos J Soares
PURPOSE: The purpose of this study was to evaluate mouthguard shock absorption ability, strain, and stress generation during impact on dental implants placed in the anterior maxilla. The mouthguard material was also characterized. MATERIALS AND METHODS: Sixty experimental models were created and divided into six groups (n = 10): implant type, external hexagon (EH) and Morse taper (MT); without and with two mouthguards (MTG), EVA custom-fitted (Ct-MTG) and standard self-adapted (St-MTG)...
March 2018: International Journal of Oral & Maxillofacial Implants
Tea Galic, Domagoj Kuncic, Tina Poklepovic Pericic, Ivan Galic, Frane Mihanovic, Josko Bozic, Mark Herceg
BACKGROUND/AIMS: The increasing popularity of participating in sports activities among children and adolescents has increased the risk of sports-related orofacial and dental injuries. Therefore, it is important to establish efficient preventive strategies regarding sports-related dental trauma. The aim of this study was to evaluate the occurrence of sports-related dental injuries in young athletes and to compare the frequency of such injuries between high-risk and medium-risk sports, along with assessing athletes' attitudes and habits regarding mouthguard use...
March 11, 2018: Dental Traumatology: Official Publication of International Association for Dental Traumatology
S Raghavan, P Dayal, K Philip, M S Gahlot
Objectives (Background): Risk of dental injury from contact sports can be prevented by the use of mouthguards. Dentists provide excellent information regarding mouthguards. Thus, the aim was to assess the awareness among dentists regarding the same, the level of training in fabricating a mouthguard and whether they regularly recommend one for their athletically active patients. Materials and Methods: This institutional cross-sectional survey was conducted in the Department of Orthodontics, Government Dental College, Kottayam, and Kerala, India...
March 2018: Nigerian Journal of Clinical Practice
Jordan Rattai, Liran Levin
BACKGROUND/AIMS: Ice hockey players of all ages experience oral and dental injuries. The aim of this study was to evaluate the rates of ice hockey-related oral injuries, time lost due to oral injury, and mechanisms of oral injuries in the province of Alberta during a 15-year period (2001-2016). METHODS: Hockey Alberta, the governing body for minor ice hockey associations across the province, collects injury report forms from injured participants in sanctioned events...
April 2018: Dental Traumatology: Official Publication of International Association for Dental Traumatology
Tomohiro Otani, Masakazu Kobayashi, Kazunori Nozaki, Tomoya Gonda, Yoshinobu Maeda, Masao Tanaka
BACKGROUND/AIM: The mouthguard (MG) is an effective device to reduce the risk of dental traumatic injuries, but the mechanical effects of wearing a MG and its design are not fully understood. The aim of this study was to evaluate the mechanical influence of wearing a MG and its palatal design on the tooth-periodontal ligament-bone complex (TPBC) by computational analysis using the finite element method. MATERIAL AND METHODS: Three-dimensional subject-specific geometry of the TPBC was reconstructed from medical computed tomography (CT) images...
February 6, 2018: Dental Traumatology: Official Publication of International Association for Dental Traumatology
Mridula Goswami, Puneet Kumar, Urvashi Bhushan
Aim: To evaluate the occurrence of dental injuries in children, the level of knowledge of the participants about preventive measures, and management of dental trauma during sports, in New Delhi. Materials and methods: A cross-sectional study was carried out among 450 children aged 6 to 16 years. A structured interviewer-guided questionnaire was used to determine the prevalence of oral injuries sustained during sport activities, the use of mouthguard as well as the athlete's awareness regarding use of mouthguard...
October 2017: International Journal of Clinical Pediatric Dentistry
Yuriko Yoshida, Hiroshi Churei, Yasuo Takeuchi, Takahiro Wada, Motohiro Uo, Yuichi Izumi, Toshiaki Ueno
The purpose of the present study was to develop an antibacterial mouthguard (MG) material using a masterbatch of silvernanoparticle-embedded ethylene-vinyl acetate (EVA) copolymers. In order to verify that the testing material was clinically applicable as an antibacterial MG material, we conducted an antibacterial test, a shock absorption test, and analysis of in vitro silver release. The colony-forming activity of Streptococcus sobrinus, Porphyromonas gingivalis, and Escherichia coli were significantly inhibited on the testing materials compared with the commercial EVA sheet (p<0...
January 26, 2018: Dental Materials Journal
Lyndia C Wu, Calvin Kuo, Jesus Loza, Mehmet Kurt, Kaveh Laksari, Livia Z Yanez, Daniel Senif, Scott C Anderson, Logan E Miller, Jillian E Urban, Joel D Stitzel, David B Camarillo
Accumulation of head impacts may contribute to acute and long-term brain trauma. Wearable sensors can measure impact exposure, yet current sensors do not have validated impact detection methods for accurate exposure monitoring. Here we demonstrate a head impact detection method that can be implemented on a wearable sensor for detecting field football head impacts. Our method incorporates a support vector machine classifier that uses biomechanical features from the time domain and frequency domain, as well as model predictions of head-neck motions...
December 21, 2017: Scientific Reports
Shinobu Tsuchiya, Masahiro Tsuchiya, Haruki Momma, Takuya Sekiguchi, Kaoru Kuroki, Kenji Kanazawa, Takeyoshi Koseki, Kaoru Igarashi, Ryoichi Nagatomi, Yoshihiro Hagiwara
BACKGROUND: Sports-related dental injuries, such as tooth fracture, loosening, and avulsion, are a major concern among young athletes because they directly impair oral function. Although the preventive efficacy of mouthguards has been well established, the prevalence of sports-related dental injuries remains high among young athletes. The aim of this study is to identify the variables contributing to the risk of sports-related dental injuries by conducting a survey on large population of young athletes in Miyagi prefecture...
December 29, 2017: BMC Oral Health
Yazan R Aljohani, Khalid H Alfaifi, Samaa K Redwan, Dania A Sabbahi, Mohammed H Zahran
To assess the incidence and awareness of taekwondo athletes in Saudi Arabia regarding oral and maxillofacial (OMF) injuries and their prevention. Methods: In this cross-sectional study, an online questionnaire about the incidence and awareness of OMF injuries and their prevention was developed and distributed to taekwondo athletes in Saudi Arabia via their coaches.  Results: Sixty-eight responses were collected. The mean age of the participants was 29.3±9.1 years and 97% of them were males. Most of the participants (83%) believed that they are vulnerable to OMF injuries during practice...
November 2017: Saudi Medical Journal
Greg Chang
No abstract text is available yet for this article.
June 22, 2017: Journal of the California Dental Association
James D Stephens
No abstract text is available yet for this article.
June 22, 2017: Journal of the California Dental Association
Jeffrey D Lloyd, Wayne S Nakamura, Yoshinobu Maeda, Tomotaka Takeda, Richard Leesungbok, David Lazarchik, Brett Dorney, Tomoya Gonda, Kazunori Nakajima, Toshikazu Yasui, Yoshihiro Iwata, Hiroshi Suzuki, Naoki Tsukimura, Hiroshi Churei, Kung-Rock Kwon, Melvin M H Choy, James B Rock
There appears to be much confusion or misinformation worldwide regarding mouthguards and their use in sports. In an effort to clarify where the international dental community stands on mouthguards and mouthguard research, the workshop looked at some important questions. The goal is to one day formulate consensus statements related to these questions, which will be based on current scientific evidence-based research, to motivate the international community of the importance of dentally fitted laminated mouthguards and the wearing of them by athletes of all sports...
October 1, 2017: Dental Traumatology: Official Publication of International Association for Dental Traumatology
Fumi Mizuhashi, Kaoru Koide
BACKGROUND/AIMS: Fabrication of mouthguards should be performed properly. However, the appropriate heating temperature for fabricating a pressure-formed mouthguard has not been determined. The aim of this study was to examine the influence of the heating temperature on the fabrication of a pressure-formed mouthguard. MATERIALS AND METHODS: Mouthguard sheets of 3.8 mm ethylene vinyl acetate were pressure-formed on a working model at three heating temperatures: 80, 100, and 120°C...
February 2018: Dental Traumatology: Official Publication of International Association for Dental Traumatology
Fumi Mizuhashi, Kaoru Koide
BACKGROUND/AIM: Mouthguard thickness is important for the prevention of orofacial trauma during sports. However, it is difficult to maintain the necessary thickness after forming the mouthguard. The aim of this study was to evaluate a pressure-forming method using a single-mouthguard sheet. MATERIALS AND METHODS: A mouthguard sheet of 3.8 mm ethylene vinyl acetate was prepared by cutting 3 mm from the anterior margin of the sheet holder with a length of 7 mm and with the width being from the buccal cusp of the upper right first premolar to the buccal cusp of the upper left first premolar and compared with the original sheet...
February 2018: Dental Traumatology: Official Publication of International Association for Dental Traumatology
Calvin Kuo, Lyndia Wu, Wei Zhao, Michael Fanton, Songbai Ji, David B Camarillo
Real-time quantification of head impacts using wearable sensors is an appealing approach to assess concussion risk. Traditionally, sensors were evaluated for accurately measuring peak resultant skull accelerations and velocities. With growing interest in utilizing model-estimated tissue responses for injury prediction, it is important to evaluate sensor accuracy in estimating tissue response as well. Here, we quantify how sensor kinematic measurement errors can propagate into tissue response errors. Using previous instrumented mouthguard validation datasets, we found that skull kinematic measurement errors in both magnitude and direction lead to errors in tissue response magnitude and distribution...
February 2018: Biomechanics and Modeling in Mechanobiology
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