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Odontology

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https://www.readbyqxmd.com/read/27913930/letter-to-the-editor-enigmatic-morphological-traits-in-human-teeth-from-early-bronze-age
#1
LETTER
Iztok Štamfelj
No abstract text is available yet for this article.
December 2, 2016: Odontology
https://www.readbyqxmd.com/read/27888369/prevalence-of-periodontal-pathogens-as-predictor-of-the-evolution-of-periodontal-status
#2
Miriam Puig-Silla, José María Montiel-Company, Francisco Dasí-Fernández, José Manuel Almerich-Silla
The aim of this study was to determine the relationship between the prevalence of Porphyromonas gingivalis, its fimA genotypes, Aggregatibacter actinomycetemcomitans, Tannerella forsythia, and Treponema denticola and the evolution of periodontal health. In a longitudinal prospective study, samples of subgingival plaque were taken from 114 patients (37 with chronic periodontitis, 17 with gingivitis, and 60 periodontally healthy) in the course of a full periodontal examination. PCR was employed to determine the presence of the periodontopathogenic bacteria...
November 25, 2016: Odontology
https://www.readbyqxmd.com/read/27878641/dental-arch-spatial-changes-after-premature-loss-of-first-primary-molars-a-systematic-review-of-controlled-studies
#3
Eleftherios G Kaklamanos, Dimitra Lazaridou, Dimitra Tsiantou, Nikolaos Kotsanos, Athanasios E Athanasiou
Studies investigating dental arch spatial changes following first primary molar premature loss are controversial regarding clinical significance. The purpose of this review was to systematically investigate the relevant literature. Controlled studies investigating changes before and after premature loss of first primary molars were searched in various databases. Split-mouth design studies were considered eligible for inclusion. The risk of bias was judged according to ADA Clinical Practice Guidelines. Only two analyzable split-mouth studies on mandibular first primary molar loss were identified...
November 23, 2016: Odontology
https://www.readbyqxmd.com/read/27853978/sex-differences-of-dental-pathology-in-early-modern-samurai-and-commoners-at-kokura-in-japan
#4
Joichi Oyamada, Yoshikazu Kitagawa, Masahito Hara, Junya Sakamoto, Takayuki Matsushita, Toshiyuki Tsurumoto, Yoshitaka Manabe
So-called "Ohaguro", teeth blackening, in the married females was a general custom regardless of class in the early modern period. As a result, Ohaguro was thought to have enhanced the acid resistance of tooth substance and tightened gingiva and prevented tooth morbidity due to periodontal disease. For investigation into the influence of Ohaguro, the skeletal remains of early modern samurai and commoners at Kokura were examined for differences in the dental pathology based on sex. Though females from archeological sites have significantly more carious teeth and antemortem tooth loss (AMTL) than males in the previous studies, the prevalence of caries and AMTL in males was higher than in females among the early modern samurai and commoners in Kokura...
November 16, 2016: Odontology
https://www.readbyqxmd.com/read/27848100/stress-distribution-difference-between-lava-ultimate-full-crowns-and-ips-e-max-cad-full-crowns-on-a-natural-tooth-and-on-tooth-shaped-implant-abutments
#5
Ivo Krejci, René Daher
The goal of this short communication is to present finite element analysis comparison of the stress distribution between CAD/CAM full crowns made of Lava Ultimate and of IPS e.max CAD, adhesively luted to natural teeth and to implant abutments with the shape of natural teeth. Six 3D models were prepared using a 3D content-creating software, based on a micro-CT scan of a human mandibular molar. The geometry of the full crown and of the abutment was the same for all models representing Lava Ultimate full crowns (L) and IPS e...
November 15, 2016: Odontology
https://www.readbyqxmd.com/read/27848099/dental-pulp-tissue-engineering-of-pulpotomized-rat-molars-with-bone-marrow-mesenchymal-stem-cells
#6
Takafumi Ito, Tomoatsu Kaneko, Yukiko Sueyama, Reika Kaneko, Takashi Okiji
The major goal of dental pulp tissue engineering is to enable the healing of inflamed tissue or to replace necrotic pulp tissue with newly formed dental pulp tissue. Here, we report a protocol for pulp tissue engineering in vivo in pulpotomized rat teeth using constructs of rat bone marrow mesenchymal stem cells, preformed biodegradable scaffolds, and hydrogel. The constructs were implanted into pulpotomized pulp chambers for 3, 7, or 14 days. At 3 days, cells were located mainly along the preformed scaffolds...
November 15, 2016: Odontology
https://www.readbyqxmd.com/read/27807653/localization-and-expression-pattern-of-amelotin-odontogenic-ameloblast-associated-protein-and-follicular-dendritic-cell-secreted-protein-in-the-junctional-epithelium-of-inflamed-gingiva
#7
Yohei Nakayama, Ryoki Kobayashi, Sari Matsui, Hiroyoshi Matsumura, Yasunobu Iwai, Keisuke Noda, Mizuho Yamazaki, Tomoko Kurita-Ochiai, Atsutoshi Yoshimura, Tamayuki Shinomura, Bernhard Ganss, Yorimasa Ogata
The purpose of this study is to elucidate the localization of amelotin (AMTN), odontogenic ameloblast-associated protein (ODAM) and follicular dendritic cell-secreted protein (FDC-SP) at the junctional epithelium (JE) in Porphyromonas gingivalis and Aggregatibacter actinomycetemcomitans infected mice and inflamed and non-inflamed human gingiva. We performed immunostaining to determine the localization and expression pattern of AMTN, ODAM and FDC-SP. AMTN, ODAM and FDC-SP in A. actinomycetemcomitans infected mice did not change dramatically compared with non-infected mice...
November 2, 2016: Odontology
https://www.readbyqxmd.com/read/27803985/marginal-integrity-of-low-shrinking-versus-methacrylate-based-composite-effect-of-different-one-step-self-etch-adhesives
#8
Ladislav Gregor, Lefever Dorien, Tissiana Bortolotto, Albert J Feilzer, Ivo Krejci
The aim of the study was to evaluate the influence of composite type and adhesive system on the quality of marginal adaptation in standardized Class V cavities before and after thermo-mechanical loading (TML). The cavities were restored using different combinations of three adhesive systems [(Silorane System Adhesive (SSA), Clearfil S(3) Bond (S3), G-Bond (G-B)] and two resin composite materials (Filtek Silorane, Clearfil AP-X). Six groups (n = 10): Group A (SSA-Primer + SSA-Bond, Filtek Silorane), Group B (SSA-Primer + SSA-Bond, Clearfil AP-X), Group C (S3 + SSA-Bond, Filtek Silorane), Group D (S3 + SSA-Bond, Clearfil AP-X), Group E (G-B + SSA-Bond, Filtek Silorane) and Group F (G-B + SSA-Bond, Clearfil AP-X) were defined...
November 1, 2016: Odontology
https://www.readbyqxmd.com/read/27796598/soft-tissue-changes-after-a-mandibular-osteotomy-for-symmetric-skeletal-class-iii-malocclusion
#9
Seigo Ohba, Haruka Kohara, Takamitsu Koga, Takako Kawasaki, Kei-Ichirou Miura, Noriaki Yoshida, Izumi Asahina
The soft tissue profile is crucial to esthetics after orthognathic surgery. The aim of this study was to assess the soft tissue changes of the subnasal and submental regions more than 1 year after a sagittal split ramus osteotomy (SSRO) in patients with skeletal class III malocclusion. A total of 22 patients with mandibular prognathism were included in this study. Patients had lateral cephalograms before and more than 1 year after they underwent an isolated SSRO. Soft and hard tissue changes were assessed using the lateral cephalograms...
October 31, 2016: Odontology
https://www.readbyqxmd.com/read/27778135/effect-of-adhesive-system-application-for-cavities-prepared-with-erbium-chromium-yttrium-scandium-gallium-garnet-laser-on-rat-dental-pulp-tissue
#10
Mayo Takada, Masaya Suzuki, Maiko Haga-Tsujimura, Koichi Shinkai
We examined the effects of adhesive systems under study applied for a laser-cut cavity using an Er,Cr:YSGG laser on rat dental pulp at 24 h and 14 days postoperatively. Group 1, laser-cut cavities were treated with a self-etching-primer and bonding agent; group 2, pretreated with a phosphoric-acid, and then treated with a self-etching-primer and bonding agent; group 3, pretreated with a phosphoric-acid and sodium-hypochlorite, and then treated with a self-etching-primer and bonding agent; and group 4, treated with an all-in-one adhesive...
October 24, 2016: Odontology
https://www.readbyqxmd.com/read/27771807/effects-of-photodynamic-therapy-2%C3%A2-chlorhexidine-triantibiotic-mixture-propolis-and-ozone-on-root-canals-experimentally-infected-with-enterococcus-faecalis-an-in-vitro-study
#11
Fabio Camacho-Alonso, P Salmerón-Lozano, Y Martínez-Beneyto
The aim of this study was to evaluate the antibacterial effect of photodynamic therapy (PDT), 2 % chlorhexidine (CHX). The teeth were contaminated with 0.1 mL Enterococcus faecalis (3 × 10(8) cell/mL) and randomized into eight treatment groups: Group 1 (2.5 % NaOCl); Group 2 (PDT); Group 3 (2 % CHX); Group 4 (TAM); Group 5 (propolis), Group 6 (ozone), Group 7 (positive control) and Group 8 (negative control). Following treatment, the canal content was sampled. The samples were cultured in triplicate on blood agar plates to determine the number of colony forming units (CFU)/mL...
October 22, 2016: Odontology
https://www.readbyqxmd.com/read/27770302/the-utility-of-bone-scintigraphy-in-the-assessment-of-mandibular-metabolism-during-long-term-bisphosphonate-administration
#12
Yumiko Ohbayashi, Fumi Nakai, Akinori Iwasaki, Takaaki Ogawa, Yuka Yamamoto, Yoshihiro Nishiyama, Minoru Miyake
The duration of antiresorptive therapy is an important risk factor for medication-related osteonecrosis of the jaw. We performed a pilot study using quantitative analysis by bone scintigraphy to test the hypothesis that mandibular metabolism is affected by long-term bisphosphonate (BP) therapy. Our primary objectives were to assess changes in bone metabolism of the mandible in response to long-term BP therapy and compare the bone metabolism changes of the mandible with other bone sites. We compared the metabolic difference at the site in the mandible unaffected by disease, the humerus and the femur between 14 osteoporosis patients who were being treated with BP (BP group) and 14 patients who were not being treated with BP (control group) using a quantitative analysis and bone scintigraphy...
October 21, 2016: Odontology
https://www.readbyqxmd.com/read/27743231/effect-of-er-cr-ysgg-laser-irradiation-on-bovine-enamel-surface-during-in-office-tooth-bleaching-ex-vivo
#13
Dimitrios Dionysopoulos, Dimitrios Strakas, Eugenia Koliniotou-Koumpia, Effimia Koumpia
The aim of this in vitro study was to evaluate the effect of using Er,Cr:YSGG laser during in-office tooth bleaching on bovine enamel surface to evaluate the safety of this therapy on tooth tissues. Thirty-six enamel specimens were prepared from bovine incisors and divided into three groups: Group 1 specimens (control) received no bleaching treatment; Group 2 received a conventional in-office bleaching treatment (40 % H2O2); Group 3 received laser-assisted bleaching procedure (40 % H2O2) utilizing an Er,Cr:YSGG laser...
October 14, 2016: Odontology
https://www.readbyqxmd.com/read/27655625/caries-diagnosis-using-light-fluorescence-devices-in-comparison-with-traditional-visual-and-tactile-evaluation-a-prospective-study-in-152-patients
#14
María Melo, Agustín Pascual, Isabel Camps, Ángel Del Campo, Javier Ata-Ali
The objective of the study was to evaluate the in vivo effectiveness of two fluorescence techniques (DIAGNOdent and VistaProof) and of visual and tactile evaluation in the diagnosis of occlusal caries in permanent teeth. A total of 302 teeth (molars and premolars) from 152 patients were studied. The occlusal surfaces were cleaned using pumice mixed with water, followed by application of the diagnostic methods according to the instructions of the manufacturer, and of the visual and tactile methods according to the recommendations...
September 21, 2016: Odontology
https://www.readbyqxmd.com/read/27655624/periodontal-tissue-repair-after-sealing-of-the-gap-in-vertical-root-fracture
#15
Tsutomu Sugaya, Mahito Tomita, Youji Motoki, Khurshiduz Zaman, Hirofumi Miyaji, Masamitsu Kawanami
The aim of this study was to determine whether sealing of fracture gap using adhesive resin through the root canal can prevent inflammation of periodontal tissue, and resealing the incompletely sealed fracture gap from outside can resolve such inflammation in experimentally created vertical root fractures. Vertical root fractures were created in incisor of beagles. In the experimental group, the fracture gap was sealed through the root canal with adhesive resin. After 5 weeks, sites with the clinical attachment level ≥4 mm were further divided randomly into the poor-replanting group and the poor-untreated group...
September 21, 2016: Odontology
https://www.readbyqxmd.com/read/27613193/collagen-based-barrier-membranes-for-periodontal-guided-bone-regeneration-applications
#16
Zeeshan Sheikh, Javairia Qureshi, Abdullah M Alshahrani, Heba Nassar, Yuichi Ikeda, Michael Glogauer, Bernhard Ganss
Certain cell populations within periodontal tissues possess the ability to induce regeneration, provided they have the opportunity to populate the wound or defect. Guided regeneration techniques have been investigated for regenerating periodontal tissues and such therapies usually utilize barrier membranes. Various natural and synthetic barrier membranes have been fabricated and tested to prevent epithelial and connective tissue cells from invading while allowing periodontal cells to selectively migrate into the defect...
September 9, 2016: Odontology
https://www.readbyqxmd.com/read/27585669/novel-bioactive-tetracycline-containing-electrospun-polymer-fibers-as-a-potential-antibacterial-dental-implant-coating
#17
R G Shahi, M T P Albuquerque, E A Münchow, S B Blanchard, R L Gregory, M C Bottino
The purpose of this investigation was to determine the ability of tetracycline-containing fibers to inhibit biofilm formation of peri-implantitis-associated pathogens [i.e., Porphyromonas gingivalis (Pg), Fusobacterium nucleatum (Fn), Prevotella intermedia (Pi), and Aggregatibacter actinomycetemcomitans (Aa)]. Tetracycline hydrochloride (TCH) was added to a poly(DL-lactide) [PLA], poly(ε-caprolactone) [PCL], and gelatin [GEL] polymer blend solution at distinct concentrations to obtain the following fibers: PLA:PCL/GEL (TCH-free, control), PLA:PCL/GEL + 5 % TCH, PLA:PCL/GEL + 10 % TCH, and PLA:PCL/GEL + 25 % TCH...
September 1, 2016: Odontology
https://www.readbyqxmd.com/read/27550338/amelogenesis-imperfecta-review-of-diagnostic-findings-and-treatment-concepts
#18
Martin M I Sabandal, Edgar Schäfer
Mineralization defects like amelogenesis imperfecta are often of hereditary origin. This article reviews the diagnostic findings and summarizes the suggested treatment approaches. Currently, there are no defined therapy recommendations available for patients suffering from amelogenesis imperfecta. The mentioned therapies are more or less equal but no comprehensive therapy recommendation is evident. When treating patients suffering from amelogenesis imperfecta, a comprehensive therapy of almost every dental discipline has to be considered...
September 2016: Odontology
https://www.readbyqxmd.com/read/27540733/polymerization-shrinkage-assessment-of-dental-resin-composites-a-literature-review
#19
Dalia Kaisarly, Moataz El Gezawi
Composite restorations are widely used worldwide, but the polymerization shrinkage is their main disadvantage that may lead to clinical failures and adverse consequences. This review reports, currently available in vitro techniques and methods used for assessing the polymerization shrinkage. The focus lies on recent methods employing three-dimensional micro-CT data for the evaluation of polymerization shrinkage: volumetric measurement and the shrinkage vector evaluation through tracing particles before and after polymerization...
September 2016: Odontology
https://www.readbyqxmd.com/read/26886570/a-systematic-review-on-the-long-term-success-of-calcium-phosphate-plasma-spray-coated-dental-implants
#20
B A J A van Oirschot, E M Bronkhorst, J J J P van den Beucken, G J Meijer, J A Jansen, R Junker
The objectives of the current review were (1) to systematically appraise, and (2) to evaluate long-term success data of calcium phosphate (CaP) plasma-spray-coated dental implants in clinical trials with at least 5 years of follow-up. To describe the long-term efficacy of functional implants, the outcome variables were (a) percentage annual complication rate (ACR) and (b) cumulative success rate (CSR), as presented in the selected articles. The electronic search yielded 645 titles. On the basis of the inclusion criteria, 8 studies were finally included...
September 2016: Odontology
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