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Mayara B V Mundim, Danilo R Dias, Ronaldo M Costa, Cláudio R Leles, Paulo M Azevedo-Marques, Rejane F Ribeiro-Rotta
BACKGROUND AND OBJECTIVES: Computer vision extracts features or attributes from images improving diagnosis accuracy and aiding in clinical decisions. This study aims to investigate the feasibility of using texture analysis of periapical radiograph images as a tool for dental implant treatment planning. METHODS: Periapical radiograph images of 127 jawbone sites were obtained before and after implant placement. From the superimposition of the pre- and post-implant images, four regions of interest (ROI) were delineated on the pre-implant images for each implant site: mesial, distal and apical peri-implant areas and a central area...
November 2016: Computer Methods and Programs in Biomedicine
Danilo Alessio Di Stefano, Paolo Arosio
PURPOSE: Bone density at implant placement sites is one of the key factors affecting implant primary stability, which is a determinant for implant osseointegration and rehabilitation success. Site-specific bone density assessment is, therefore, of paramount importance. Recently, an implant micromotor endowed with an instantaneous torque-measuring system has been introduced. The aim of this study was to assess the reliability of this system. MATERIALS AND METHODS: Five blocks with different densities (0...
September 2016: International Journal of Oral & Maxillofacial Implants
Yuko Fujita, Shota Goto, Maika Ichikawa, Ayako Hamaguchi, Kenshi Maki
OBJECTIVES: We examined the effects of a low-calcium diet and altered diet hardness on bone architecture and metabolism in the maxilla and mandible. MATERIALS AND METHODS: Male rats (n=48, 3 weeks old) were divided into six groups. In total, 24 rats were given a normal-calcium diet and the others were given a low-calcium diet. Each group was then divided into three subgroups, which were fed a 'hard̕ diet for 8 weeks, a 'soft̕ die for 8 weeks, or switched from the soft diet after 4 weeks to the hard diet for 4 weeks...
September 1, 2016: Archives of Oral Biology
Sjaan R Gomersall, Norman Ng, Nicola W Burton, Toby G Pavey, Nicholas D Gilson, Wendy J Brown
BACKGROUND: Activity trackers are increasingly popular with both consumers and researchers for monitoring activity and for promoting positive behavior change. However, there is a lack of research investigating the performance of these devices in free-living contexts, for which findings are likely to vary from studies conducted in well-controlled laboratory settings. OBJECTIVE: The aim was to compare Fitbit One and Jawbone UP estimates of steps, moderate-to-vigorous physical activity (MVPA), and sedentary behavior with data from the ActiGraph GT3X+ accelerometer in a free-living context...
September 7, 2016: Journal of Medical Internet Research
Kenji Yoshida, Eri Tanaka, Hiroyoshi Kawaai, Shinya Yamazaki
To obtain effective infiltration anesthesia in the jawbone, high concentrations of local anesthetic are needed. However, to reduce pain experienced by patients during local anesthetic administration, low-pressure injection is recommended for subperiosteal infiltration anesthesia. Currently, there are no studies regarding the effect of injection pressure on infiltration anesthesia, and a standard injection pressure has not been clearly determined. Hence, the effect of injection pressure of subperiosteal infiltration anesthesia on local anesthetic infiltration to the jawbone was considered by directly measuring lidocaine concentration in the jawbone...
2016: Anesthesia Progress
Tim Rolvien, Till Koehne, Uwe Kornak, Wolfgang Lehmann, Michael Amling, Thorsten Schinke, Ralf Oheim
Gnathodiaphyseal dysplasia (GDD) is a rare skeletal syndrome that involves an osteopetrosis-like sclerosis of the long bones and fibrous dysplasia-like cemento-osseous lesions of the jawbone. Although the genetic analysis of the respective patients has revealed mutations in the ANO5 gene as an underlying cause, there is still no established consensus regarding the bone status of GDD patients. We report a new case of GDD in a 13-year-old boy with recurrent diaphyseal fractures of the femur, in whom we identified a novel de novo missense mutation in the ANO5 gene, causing a p...
August 19, 2016: Journal of Bone and Mineral Research: the Official Journal of the American Society for Bone and Mineral Research
Kei Nakajima, Masamitsu Oshima, Naomi Yamamoto, Chie Tanaka, Ryosuke Koitabashi, Takashi Inoue, Takashi Tsuji
Current osseointegrated dental implants have been widely used for the rehabilitation of tooth loss. Although dental implants are considered an available treatment in the paradigm shift from traditional dental therapies, such as fixed dental bridges and removable dentures, the fundamental problems must be overcome before their clinical use in young patients who are still undergoing jawbone growth. Here, we show a novel bioengineering method for a functional biohybrid implant that is combined with adult-derived periodontal tissue and attached with bone tissue as a substitute for cementum...
September 2016: Tissue Engineering. Part A
Manjusha Pattamparambath, Sudha Sathyabhama, Rohitashwa Khatri, Sujatha Varma, Navajeevraj Machipalliyil Narayanan
Benign Fibrous Histiocytoma (BFH) is a well recognised tumour of the soft tissue, developing entirely within the subcutaneous tissue, the deep soft tissues or in the parenchymal organs. However, BFH of bones is poorly defined. It has been rarely reported in the bones with femur, tibia and pelvic bone being the most commonly affected bones. Involvement of the jawbones is rare. Their clinical and radiographic features often simulate the common odontogenic and non-odontogenic lesions of the jaws. Hence, it is imperative for a dentist to have proper knowledge of various conditions affecting the jaws...
June 2016: Journal of Clinical and Diagnostic Research: JCDR
Eun-Young Lee, Eun-Suk Kim, Kyung-Won Kim
PURPOSE: The current gold standard for clinical jawbone formation involves autogenous bone as a graft material. In addition, demineralized dentin can be an effective graft material. Although demineralized dentin readily induces heterotopic bone formation, conventional decalcification takes three to five days, so, immediate bone grafting after extraction is impossible. This study evaluated the effect of vacuum ultrasonic power on the demineralization and processing of autogenous tooth material and documented the clinical results of rapidly processed autogenous demineralized dentin (ADD) in an alveolar defects patient...
May 2014: Maxillofacial Plastic and Reconstructive Surgery
Yangjian Huang, Junkai Xu, Bo Yu, Peter B Shull
BACKGROUND: Increased physical activity can provide numerous health benefits. The relationship between physical activity and health assumes reliable activity measurements including step count and distance traveled. This study assessed step count and distance accuracy for Nike+ FuelBand, Jawbone UP 24, Fitbit One, Fitbit Flex, Fitbit Zip, Garmin Vivofit, Yamax CW-701, and Omron HJ-321 during level, upstairs, and downstairs walking in healthy adults. METHODS: Forty subjects walked on flat ground (400m), upstairs (176 steps), and downstairs (176 steps), and a subset of 10 subjects performed treadmill walking trials to assess the influence of walking speed on accuracy...
July 2016: Gait & Posture
Skyler Brooke, Hyun-Sung An, Seoung-Ki Kang, John Noble, Kris Berg, Jung-Min Lee
The purpose of this study is to evaluate the concurrent validity of wearable activity trackers in energy expenditure (EE) and sleep period time (SPT) under free-living conditions. Ninety-five (28.5 ± 9.8 years) healthy males (n=34) and females (n=61) participated in this study. The total EE and SPT were measured by eight monitors; Nike+ Fuel Band SE (NFB), Garmin VivoFit (VF), Misfit Shine (MF), Fitbit Flex (FF), Jawbone UP (JU), Polar Loop (PL), Fitbit Charge HR (FC), and SenseWear Armband (SWA) (Criterion measures: SWA for EE and a sleep-log for SPT)...
July 19, 2016: Journal of Strength and Conditioning Research
Alexa M Ortiz, Stephen J Tueller, Sarah L Cook, Robert D Furberg
BACKGROUND: Regular physical activity (PA) can be an important indicator of health across an individual's life span. Consumer wearables, such as Fitbit or Jawbone, are becoming increasingly popular to track PA. With the increased adoption of activity trackers comes the increased generation of valuable individual-based data. Generated data has the potential to provide detailed insights into the user's behavior and lifestyle. OBJECTIVE: The primary objective of the described study is to evaluate the feasibility of individual data collection from the selected consumer wearable device (the Fitbit Zip)...
2016: JMIR Research Protocols
Dieter Busenlechner, Georg Mailath-Pokorny, Robert Haas, Rudolf Fürhauser, Carina Eder, Bernhard Pommer, Georg Watzek
PURPOSE: To compare long-term survival and marginal bone loss of late interantral implants in the nonaugmented edentulous maxilla subjected to immediate vs delayed loading. MATERIALS AND METHODS: One hundred twenty-two edentulous patients with implants in native, healed jawbone were subjected to either immediate loading (179 implants) or delayed loading (403 implants) of their four to six interantral implants (part I of 362 graftless maxillary cross-arch rehabilitations performed in the years 2004 to 2013)...
July 2016: International Journal of Oral & Maxillofacial Implants
Jaime Castro-Núñez
The author presents an innovative device to decompress odontogenic cystic lesions of the jawbones. Its use and characteristics are described.
July 2016: Journal of Craniofacial Surgery
M Diéguez Pérez, J De Nova García, M R Mourelle Martínez, G Feijoo García
AIM: To assess the degree of jawbone asymmetry by drawing vertical lines on digital panoramic radiographs of paediatric patients with right or left unilateral cross-bite. MATERIALS AND METHODS: HASH(0x4500228) STUDY DESIGN: The sample consisted of 217 paediatric patients of both genders, aged 6-9 years. A set of vertical lines was drawn on the side of the mandible with the cross-bite and on the side without the cross-bite, using software program tpsDigs version 2...
June 2016: European Journal of Paediatric Dentistry: Official Journal of European Academy of Paediatric Dentistry
Evangelos Karapanos, Rúben Gouveia, Marc Hassenzahl, Jodi Forlizzi
BACKGROUND: Wearable activity trackers have become a viable business opportunity. Nevertheless, research has raised concerns over their potentially detrimental effects on wellbeing. For example, a recent study found that while counting steps with a pedometer increased steps taken throughout the day, at the same time it decreased the enjoyment people derived from walking. This poses a serious threat to the incorporation of healthy routines into everyday life. Most studies aim at proving the effectiveness of activity trackers...
2016: Psychology of Well-being
Xiuli He, Franz-Xaver Reichl, Yan Wang, Bernhard Michalke, Stefan Milz, Yang Yang, Philipp Stolper, Gabriele Lindemaier, Matthias Graw, Reinhard Hickel, Christof Högg
OBJECTIVE: The aim of this study was to measure titanium (Ti) content in human jawbones and to show that Ti was released from dental implants inserted into these jawbones. METHODS: Seven samples from four human subjects with dental implants were analysed as test group and six bone samples of similar topographical regions from six human subjects without implants served as control. The contents of various elements in human jawbones were detected by inductively coupled plasma optical emission spectrometry...
August 2016: Dental Materials: Official Publication of the Academy of Dental Materials
Y Goldman, N Yarom
Metastases to the oral cavity are rare. However, in 25% of cases, oral symptoms will be the first sign of metastatic disease. The incidence of jaws metastases is twice as high as the incidence of metastases to the soft tissues of the oral cavity. In some cases, jaws metastases can mimic dental or periodontal pain. We report a case of a 67 year old female who was referred to our clinic because of severe pain on her left posterior mandible which was not relieved by endodontic treatment of the first and second molar...
January 2016: Journal of the Israel Dental Association
Chiaki Yamada, Tomonao Aikawa, Emi Okuno, Kazuaki Miyagawa, Katsuhiko Amano, Sosuke Takahata, Masaaki Kimata, Masaya Okura, Seiji Iida, Mikihiko Kogo
Odontogenic tumors and cysts, arising in the jawbones, grow by resorption and destruction of the jawbones. However, mechanisms underlying bone resorption by odontogenic tumors/cysts remain unclear. Odontogenic tumors/cysts comprise odontogenic epithelial cells and stromal fibroblasts, which originate from the developing tooth germ. It has been demonstrated that odontogenic epithelial cells of the developing tooth germ induce osteoclastogenesis to prevent the tooth germ from invading the developing bone to maintain its structure in developing bones...
August 2016: International Journal of Oncology
Yosuke Kobayashi, Tomoki Sumida, Akiko Ishikawa, Yoshihide Mori
BACKGROUND/AIM: The aim of this study was to evaluate dental implants with regard to artificial restoration of oral function and quality of life in patients with oral cancer. PATIENTS AND METHODS: We examined 134 implants in 41 patients who had undergone jawbone resection as treatment for oral cancer. The patients were aged 44-89 (mean=61.5) years, and the male to female ratio was 27:14. RESULTS: The 5-year implant success rate was 91.0%. Of the 12 unsuccessful implants, four were embedded on bone grafts with skin flaps, four were embedded on skin flaps using muscle, and four were embedded after peripheral resection...
June 2016: Anticancer Research
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