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https://www.readbyqxmd.com/read/28231638/comparison-of-the-shock-absorption-capacities-of-different-mouthguards
#1
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/28231409/lip-and-tooth-injuries-at-public-swimming-pools-in-austria
#2
Katharina Lechner, Thomas Connert, Sebastian Kühl, Andreas Filippi
BACKGROUND/AIM: There is an increased risk of orofacial injuries in swimming pool facilities. Nevertheless, only a few studies have addressed this issue. The aim of this study was to identify the frequency of lip and tooth injuries at public swimming pools in Austria. A further aim was to examine which gender and age groups were affected, where and why these injuries occurred, and whether pool attendants had sufficient knowledge of dental first aid measures. MATERIAL AND METHODS: A total of 764 pool attendants in Austria were contacted by telephone and 689 participated in the study (90...
February 23, 2017: Dental Traumatology: Official Publication of International Association for Dental Traumatology
https://www.readbyqxmd.com/read/28231040/evaluation-of-the-alteration-of-occlusal-distribution-in-unilateral-free-end-and-intermediate-missing-cases
#3
Kazuhiro Kon, Makoto Shiota, Aoi Sakuyama, Maho Ozeki, Wataru Kozuma, Sawako Kawakami, Shohei Kasugai
The present study aimed to evaluate the effect of implant prostheses on the occlusal force and area as well as the distribution of occlusal loading in unilateral free-end and intermediate missing cases. Fourteen healthy subjects (7 free-end missing cases in the first and second molars and 7 intermediate missing cases in the first molar region) were included. Six months after the implant prosthesis was placed, an occlusal evaluation was performed with or without the implant superstructure by using Dental Prescale film and an occluder device...
February 2017: Journal of Oral Implantology
https://www.readbyqxmd.com/read/28231032/effects-of-live-trapping-and-isoflurane-anesthesia-on-free-ranging-american-martens-martes-americana
#4
Maria C Spriggs, Lisa I Muller, Paul Keenlance, Robert L Sanders, Jill C Witt, Debra L Miller
Seventy-two free-ranging American martens ( Martes americana ) in Michigan were immobilized using isoflurane from 2011 to 2015. In total, 129 anesthetic procedures were performed with no mortalities. Hypothermia and hyperthermia were the most common anesthetic complications, and the mean rectal temperatures were significantly higher during summer than in winter. Dental abnormalities were common; the majority of abnormal findings were broken or discolored teeth attributed to previous dental trauma and were not trap-induced...
February 23, 2017: Journal of Wildlife Diseases
https://www.readbyqxmd.com/read/28230910/adhesives-for-bonded-molar-tubes-during-fixed-brace-treatment
#5
REVIEW
Declan T Millett, Nicky A Mandall, Rye Cr Mattick, Joy Hickman, Anne-Marie Glenny
BACKGROUND: Orthodontic treatment involves using fixed or removable appliances (dental braces) to correct the positions of teeth. The success of a fixed appliance depends partly on the metal attachments (brackets and bands) being glued to the teeth so that they do not become detached during treatment. Brackets (metal squares) are usually attached to teeth other than molars, where bands (metal rings that go round each tooth) are more commonly used. Orthodontic tubes (stainless steel tubes that allow wires to pass through them), are typically welded to bands but they may also be glued directly (bonded) to molars...
February 23, 2017: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/28230896/using-carbon-oxygen-strontium-and-lead-isotopes-in-modern-human-teeth-for-forensic-investigations-a-critical-overview-based-on-data-from-bulgaria
#6
George D Kamenov, Jason H Curtis
Isotopic data obtained from human remains can provide information about an individual's origin, migration, and diet. We evaluate the usefulness of carbon, oxygen, strontium, and lead isotopes for forensic investigations by comparing data from Bulgarian teeth with data from other regions. Geo-referencing based on oxygen or strontium isotopes can be misleading due to overlap with other countries in Europe and other continents. Carbon and lead isotopes, in combination with oxygen and strontium isotopes, provide the most useful information for identification of local vs foreigner status...
February 23, 2017: Journal of Forensic Sciences
https://www.readbyqxmd.com/read/28230596/the-efficacy-of-immediate-implant-placement-in-extraction-sockets-for-alveolar-bone-preservation-a-clinical-evaluation-using-three-dimensional-cone-beam-computerized-tomography-and-resonance-frequency-analysis-value
#7
Ali Al Qabbani, Noor Hayati A Razak, Sausan Al Kawas, Suzina Sheikh Abdul Hamid, Saad Wahbi, A R Samsudin
The aim of this study was to determine the efficacy of immediate implant placement with alveolar bone augmentation on socket preservation following atraumatic tooth extraction and comparing it with a tooth alveolar socket that was allowed to heal in a conventional way.Twenty medically fit patients (8 males and 12 females aged between 18 and 40 years) who needed noncomplicated tooth extraction of mandibular premolar teeth were divided randomly and equally into 2 groups. In Group I, the empty extraction socket was left untreated and allowed to heal in a conventional way...
February 22, 2017: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/28229853/-consideration-of-the-shape-of-the-teeth-in-facial-hyperdivergency
#8
Olivier Sorel, Mohamed Naaim, Pierre-Alexandre Chataigner, Damien Brézulier, Valérie Bertaud
INTRODUCTION: The study examines how the shape of the teeth is taken into account in the context of facial hyperdivergency. One aim was to check out the widely-held belief that the hyperdivergent patient has long teeth. DISCUSSION: Our study found no link between the shape of the teeth and facial hyperdivergency, thus confirming the results in the literature. We examined the issue of how to characterize dental shapes. We found three diversely-appreciated types of shape: rectangular, triangular and ovoid...
March 2017: L' Orthodontie Française
https://www.readbyqxmd.com/read/28229851/-skeletal-anchorage-in-the-past-today-and-tomorrow
#9
Birte Melsen, Michel Dalstra
INTRODUCTION: Skeletal anchorage was not introduced as an alternative to conventional anchorage modalities. The first skeletal anchorage was a ligature through a hole in the infrazygomatic crest. This was replaced by surgical screws and finally the TADs, which were optimized with respect to the material and morphology, were developed. A bracket-like head allows for the use of the mini-implant as indirect anchorage, but should not be a tool for lost control resulting from badly planned biomechanics or failing compliance...
March 2017: L' Orthodontie Française
https://www.readbyqxmd.com/read/28229850/-effect-of-dental-arch-length-decrease-during-orthodontic-treatment-in-the-upper-airway-development-a-review
#10
Stéphanie Haddad, Jean-Baptiste Kerbrat, Thomas Schouman, Patrick Goudot
INTRODUCTION: A possible relation between an upper airway space decrease and the development of obstructive sleep apnea syndrom explains the importance to know the effect of the modification of dental arch length on the upper airway during orthodontic treatment. OBJECTIVES: The aim of this article is to expose recent knowledge about upper airway development and dental arch length decrease factors, to determine the influence of this decrease on upper airway development...
March 2017: L' Orthodontie Française
https://www.readbyqxmd.com/read/28228625/comparison-of-triple-antibiotic-paste-removal-by-different-irrigation-techniques
#11
Hacer Aksel, Selen Küçükkaya Eren, Ahmet Serper
This study compared different irrigation techniques in triple antibiotic paste (TAP) removal from root canals. Fifty-six maxillaryanterior-teeth were filled with TAP for 28 days, and assigned into 5 experimental groups (n=10): Syringe irrigation (SI), NaviTip FX (NFX), Vibringe-Syringe irrigation (V-SI), NaviTip FX-Vibringe (V-NFX), passive ultrasonic irrigation (PUI) and positive and negative control groups (n=3 for each). Following the removal of the medicament, the remaining medicament was evaluated using 4-grade scoring-system...
February 22, 2017: Dental Materials Journal
https://www.readbyqxmd.com/read/28228135/comparison-of-digital-panoramic-radiography-versus-cone-beam-computerized-tomography-for-measuring-alveolar-bone
#12
Zunan Tang, Xianchu Liu, Kejia Chen
BACKGROUND: Cone beam computerized tomography (CBCT) has been widely used in dental implanting. However, the local hospitals usually don't have access to CBCT due to the cost and medical investment, especially in West of China. The doctors in local hospitals have to make reasonable dental planting using orthopantomography (OPG) to reduce risks. Therefore, it is clinically meaningful to determine the magnification rate of OPG to obtain correct diagnosis. This study investigated the magnification rate of OPG in measuring different maxillofacial loci compared with CBCT...
February 22, 2017: Head & Face Medicine
https://www.readbyqxmd.com/read/28227885/orthodontic-force-simulation-of-tooth-pdl-bone-complex-under-archwire-loading
#13
Xinwen Zhou, Zeyang Xia, Yangzhou Gan, Dongxia Zhang, Jing Xiong, Peng Fang, Guanglin Li, Qunfei Zhao, Xinwen Zhou, Zeyang Xia, Yangzhou Gan, Dongxia Zhang, Jing Xiong, Peng Fang, Guanglin Li, Qunfei Zhao, Zeyang Xia, Peng Fang, Xinwen Zhou, Dongxia Zhang, Yangzhou Gan, Guanglin Li, Jing Xiong, Qunfei Zhao
Orthodontic force simulation is very important for the guidance of clinical orthodontic treatment. Previous works were mainly conducted by directly loading the force on a single or a few teeth. However, in clinic, the orthodontic force is provided by loading orthodontic appliances, and there currently is no appropriate way to measure the force on the teeth provided by the loaded appliances. This study presents a method to simulate the orthodontic force of a whole Tooth-Periodontal Ligament-Bone Complex (TPBC) by directly loading the archwire to the dentition applying the finite element method...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28227783/tooth-separation-from-dental-model-using-segmentation-field
#14
Hao Wang, Zhongyi Li, Hao Wang, Zhongyi Li, Zhongyi Li, Hao Wang
Tooth segmentation on dental model is an essential step of computer-aided-design systems for orthodontic virtual treatment planning. However, efficiently identifying cutting boundary to separate tooth from dental model still remains a challenge, due to various geometrical shapes of teeth, complex tooth arrangements and varying degrees of crowding problem. Most segmentation approaches presented before are not able to achieve a balance between fine segmentation results and simple operating procedure. In this article, we present a novel and efficient framework that achieves tooth segmentation based on the segmentation field...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28227044/dental-plaque-assessment-lifelogging-system-using-commercial-camera-for-oral-healthcare
#15
Mai Kasai, Yuka Iijima, Hiroshi Takemura, Hiroshi Mizoguchi, Tomoko Ohshima, Naho Satomi, Mai Kasai, Yuka Iijima, Hiroshi Takemura, Hiroshi Mizoguchi, Tomoko Ohshima, Naho Satomi, Tomoko Ohshima, Naho Satomi, Hiroshi Takemura, Mai Kasai, Hiroshi Mizoguchi, Yuka Iijima
We present a system for estimating the dental plaque adhesion area using a commercial camera image for oral healthcare via management of the intraoral environment. In recent years, several studies have reported on the relationship between a general disease and a periodontal disease. Such studies mention that normalization of the intraoral environment by tooth brushing is the most important treatment in preventive dentistry. However, evaluation of individual tooth brushing skill is difficult. Some devices for automatically measuring the quantity of dental plaque have already been proposed for the teaching tool of tooth brushing...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28226912/development-of-a-head-impact-monitoring-intelligent-mouthguard
#16
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/28226300/from-periodontal-mechanoreceptors-to-chewing-motor-control-a-systematic-review
#17
REVIEW
Maria Grazia Piancino, Gaetano Isola, Rosangela Cannavale, Giuseppina Cutroneo, Giovanna Vermiglio, Pietro Bracco, Giuseppe Pio Anastasi
PURPOSE: This critical review summarizes the current knowledge of the structural and functional characteristics of periodontal mechanoreceptors, and understands their role in the signal pathways and functional motor control. METHOD: A systematic review of the literature was conducted. Original articles were searched through Pubmed, Cochrane Central database and Embase until january 2016. RESULT: 1466 articles were identified through database searching and screened by reviewing the abstracts...
February 13, 2017: Archives of Oral Biology
https://www.readbyqxmd.com/read/28225430/association-between-osteoporosis-treatment-and-severe-periodontitis-in-postmenopausal-women
#18
Johelle de S Passos-Soares, Maria Isabel P Vianna, Isaac S Gomes-Filho, Simone S Cruz, Maurício L Barreto, Luis F Adan, Cassiano K Rösing, Soraya C Trindade, Eneida M M Cerqueira, Frank A Scannapieco
OBJECTIVE: To estimate the association between osteoporosis treatment and severe periodontitis in postmenopausal women. METHODS: This cross-sectional study comprised of 492 postmenopausal women, 113 women in osteoporosis treatment, and 379 not treated. Osteoporosis treatment consisted of systemic estrogen alone, or estrogen plus progestin, and calcium and vitamin D supplements, for at least 6 months. Severe periodontitis was defined as at least two interproximal tooth sites with clinical attachment loss of at least 6 mm, and at least one interproximal site with probing depth of at least 5 mm; and dental caries experience was measured using the decayed, missing, and filled teeth (DMFT) index...
February 20, 2017: Menopause: the Journal of the North American Menopause Society
https://www.readbyqxmd.com/read/28224607/a-giant-among-dwarfs-a-new-species-of-galago-primates-galagidae-from-angola
#19
Magdalena S Svensson, Elena Bersacola, Michael S L Mills, Rachel A Munds, Vincent Nijman, Andrew Perkin, Judith C Masters, Sébastien Couette, K Anne-Isola Nekaris, Simon K Bearder
OBJECTIVES: Based on vocalization recordings of an unknown galago species, our main objectives were to compare morphology and call structure with known closely-related taxa and describe a new species of galago. MATERIALS AND METHODS: We conducted field surveys in three forest habitats along the escarpment region in western Angola (Kumbira Forest, Bimbe Area, and Northern Scarp Forest), and examined galago specimens from museums worldwide. We digitized and analyzed calls using Avisoft SASLab Pro software...
February 22, 2017: American Journal of Physical Anthropology
https://www.readbyqxmd.com/read/28223246/physical-key-properties-of-antibiotic-free-plga-hpmc-based-in-situ-forming-implants-for-local-periodontitis-treatment
#20
K Agossa, M Lizambard, T Rongthong, E Delcourt-Debruyne, J Siepmann, F Siepmann
In-situ forming implants (ISFI) offer an interesting potential for the treatment of periodontitis, allowing for time-controlled drug release directly at the site of action (which is difficult to reach). For this purpose, ISFI loaded with antibiotics have been reported in the literature. But the use of antibiotic drugs at low doses over prolonged periods of time can lead to the development of bacterial resistances. This risk should be avoided. The aim of this study was to develop a novel type of in-situ forming implants, loaded with the antiseptic drug chlorhexidine...
February 18, 2017: International Journal of Pharmaceutics
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