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Odontology

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https://www.readbyqxmd.com/read/29071451/effect-of-antimicrobial-photodynamic-therapy-apdt-on-the-sterilization-of-infected-dentin-in-vitro
#1
Yuta Nagai, Anri Suzuki, Hiroaki Katsuragi, Koichi Shinkai
The aim of this study was to evaluate the bactericidal effect of antimicrobial photodynamic therapy (aPDT) on an infected dentin model. Dentin plates were prepared from extracted human molars and infected through immersion in a solution of Streptococcus mutans. The nine experimental groups consisted of two laser irradiation groups (650 nm laser: 650 laser and 940 nm laser: 940 laser), two photosensitizer groups (methylene blue: MB, and azulenocyanine: Azc), four aPDT groups (650 nm laser irradiation of MB: 650 laser-MB, 650 nm laser irradiation of Azc: 650 laser-Azc, 940 nm laser irradiation of MB: 940 laser-MB and 940 nm laser irradiation of Azc: 940 laser-Azc) and a control...
October 25, 2017: Odontology
https://www.readbyqxmd.com/read/28936637/significant-prognostic-factors-affecting-treatment-outcomes-of-salivary-gland-carcinoma-a-multicenter-retrospective-analysis
#2
Shin-Ichi Yamada, Hiroshi Kurita, Takahiro Kamata, Tadaaki Kirita, Michihiro Ueda, Tetsuro Yamashita, Yoshihide Ota, Mitsunobu Otsuru, Nobuhiro Yamakawa, Masaya Okura, Tomonao Aikawa, Masahiro Umeda
The purpose of this study was to investigate the prognostic factor in salivary gland carcinoma patients. Clinical and pathological data of 211 consecutive patients who treated with curative intent were analyzed. The overall survival (OS) rate, local control rate, and distant metastasis rate were calculated. To examine a prognostic factor in salivary gland carcinoma patients, a multivariate analysis was performed. The 5-year-OS rate was 84.0%, and 10-year was 69.2%. The 5-year-local control rate was 84.6%, and 10-year was 70...
September 21, 2017: Odontology
https://www.readbyqxmd.com/read/28840411/long-term-durability-of-orthodontic-mini-implants
#3
Mona Aly Abbassy, Ahmed Samir Bakry, Khalid Hashim Zawawi, Ali Habib Hassan
The current study aimed at examining surface and chemical composition changes of retrieved mini-implants after different periods of service as aids of anchorage for orthodontic patients. This study examined 72 retrieved orthodontic self-tapping and self-drilling mini-implants, 1.7 mm in diameter and 8 mm in length (OrthoEasy system, Forestadent, Pforzheim, Germany) from 36 adult orthodontic patients (18 men and 18 women, mean age = 23 years). The retrieved mini-implants were divided into 3 groups according to service period: 3-6 months (3M-6M) group, 6-12 months (6M-12M) group, and 12-24 months (12M-24M) group, with 24 mini-implants in each group...
August 24, 2017: Odontology
https://www.readbyqxmd.com/read/28988286/odontology-prize-2017
#4
(no author information available yet)
No abstract text is available yet for this article.
October 2017: Odontology
https://www.readbyqxmd.com/read/28831602/plaque-accumulation-on-titanium-disks-with-different-surface-treatments-an-in-vivo-investigation
#5
Enrico Conserva, Luigi Generali, Alberto Bandieri, Francesco Cavani, Francesco Borghi, Ugo Consolo
Implants with rough surfaces are today widely used. It has been speculated that rough surfaces (Ra > 0.2 μm) provide a better "substrate" for retention and accumulation of plaque in terms of area, thickness and colony-forming unit that can eventually lead to peri mucositis and/or peri-implantitis. The aim of this investigation was to evaluate in vivo the plaque accumulation after 48 h on three implant surfaces with different treatments. For this investigation, we used 21 sterilized titanium disks, with a diameter of 8mm and a thickness of 3 mm, provided by the manufacturer: 7 with machined surface, as smooth control, 7 with HA grit sandblasted RBM surface and 7 with Ca(++) incorporated in titanium Xpeed surface...
August 22, 2017: Odontology
https://www.readbyqxmd.com/read/28776281/expression-of-optineurin-isolated-from-rat-injured-dental-pulp-and-the-effects-on-inflammatory-signals-in-normal-rat-kidney-cells
#6
Kyoko Senoo, Keisuke Yamashairo, Tadashi Yamamoto, Fumio Myokai, Mari Kawamura, Shogo Takashiba
We previously isolated rat 14.7K-interacting protein-2 (rFIP-2) from the rat-wounded pulp. The protein, homologous to human FIP-2, is known as optineurin and was initially identified as a novel tumor necrosis factor-α (TNF-α)-inducible protein, and more recently, as an autophagy receptor. However, the biological role of optineurin in dental pulp remains elusive. We hypothesized that optineurin has a crucial role in regulating molecular processes during pulp inflammatory responses induced by TNF-α. We examined the kinetics of optineurin expression in pulp inflammation...
August 3, 2017: Odontology
https://www.readbyqxmd.com/read/28770416/a-stepwise-under-prepared-osteotomy-technique-improves-primary-stability-in-shallow-placed-implants-a-preliminary-study-for-simultaneous-vertical-ridge-augmentation
#7
Daisuke Ueno, Kei Nakamura, Kousuke Kojima, Takeshi Toyoshima, Hideaki Tanaka, Kazuhiko Ueda, Kiyoshi Koyano, Toshiro Kodama
Simultaneous vertical ridge augmentation (VRA) can reduce treatment procedures and surgery time, but the concomitant reduction in primary stability (PS) of a shallow-placed implant imparts risk to its prognosis. Although several studies have reported improvements in PS, there is little information from any simultaneous VRA model. This study aimed to evaluate whether tapered implants with stepwise under-prepared osteotomy could improve the PS of shallow-placed implants in an in vitro model of simultaneous VRA...
August 2, 2017: Odontology
https://www.readbyqxmd.com/read/28770415/measurement-accuracy-of-alveolar-soft-tissue-contour-using-a-laboratory-laser-scanner
#8
Daisuke Ueno, Mariko Kobayashi, Kenko Tanaka, Tsuneaki Watanabe, Tetsuro Nakamura, Kazuhiko Ueda, Takatoshi Nagano
Steric analysis of morphological changes is important for evaluation of surgical techniques. This study was performed to assess the measurement accuracy of alveolar soft tissue contour with a laboratory laser scanner. The width of the maxillary alveolar soft tissue contour was evaluated in 20 volunteers. Measurement sites were established in the alveolar soft tissue contour of the maxillary incisor and canine areas. Each site was evaluated by direct measurement with a microcaliper for each subject (DMM) and image measurement using a laboratory laser scanner (IMS)...
August 2, 2017: Odontology
https://www.readbyqxmd.com/read/28770414/oral-status-quality-of-life-and-anxiety-and-depression-in-hemodialysis-patients-and-the-effect-of-the-duration-of-treatment-by-dialysis-on-these-variables
#9
F Camacho-Alonso, C Cánovas-García, C Martínez-Ortiz, T De la Mano-Espinosa, T Ortuño-Celdrán, J I Marcello-Godino, R Ramos-Sánchez, M Sánchez-Siles
This study aimed is to evaluate the oral health status, quality of life, anxiety and depression among hemodialysis patients and to analyze the effect of the duration of dialysis on these variables. 120 patients on hemodialysis and 120 control subjects underwent oral examination, periodontal evaluation, xerostomia study using a Visual Analogue Scale (VAS), sialometry evaluation; quality of life (QOL) using the OHIP-14 questionnaire and anxiety/depression. Bleeding index, CPTIN, clinical attachment level, and probing depth were significantly higher in the hemodialysis group than the control group (p < 0...
August 2, 2017: Odontology
https://www.readbyqxmd.com/read/28748270/color-difference-of-composite-resins-after-cementation-with-different-shades-of-resin-luting-cement
#10
Esra Cengiz, Sevcan Kurtulmus-Yilmaz, Izgen Karakaya, Huseyin Aktore
The purpose of this study was to evaluate the color difference of nanohybrid and ormocer-based composite resins with different thicknesses when 4 different shades of resin luting cement were used. 56 disc specimens of each composite resin (Aelite aesthetic enamel, Ceram-X mono) with 0.5 and 1 mm thicknesses were fabricated. Baseline color measurements were performed using a clinical spectrophotometer. The specimens of each thicknesses of each resin were randomly divided into 4 groups according to the shades of resin luting cement (white/A1, yellow/universal/A3, transparent and white opaque) (n = 7)...
July 26, 2017: Odontology
https://www.readbyqxmd.com/read/28748269/presence-of-bpifb1-in-saliva-from-non-obese-diabetic-mice
#11
Tomoko Nashida, Junko Shimomura-Kuroki, Fumi Mizuhashi, Maiko Haga-Tsujimura, Ken Yoshimura, Sachiko Hayashi-Sakai
We previously showed that mRNA expression of BPIFB1 (Bpifb1), an antibacterial protein in the palate, lung, and nasal epithelium clone protein family, was increased in parotid acinar cells in non-obese diabetic (NOD, NOD/ShiJcl) mice, which is an animal model for Sjögren's syndrome. However, we did not previously assess the protein levels. In this report, we confirmed the expression of BPIFB1 protein in the parotid glands of NOD mice. Immunoblotting of subcellular fractions revealed that BPIBB1 was localised in secretory granules in parotid glands from NOD mice, and was almost not in parotid glands from the control mice...
July 26, 2017: Odontology
https://www.readbyqxmd.com/read/28070701/use-of-a-continual-sweep-motion-to-compare-air-polishing-devices-powders-and-exposure-time-on-unexposed-root-cementum
#12
Mandy L Herr, Ralph DeLong, Yuping Li, Scott A Lunos, Jill L Stoltenberg
Low abrasive air polishing powders are a viable method for subgingival biofilm removal. This in vitro study evaluated the effects of air polishing using a standard tip on cementum following clinically recommended protocols. Forty-eight teeth were randomly divided into eight groups with six teeth per group. Teeth were treated using either a Hu-Friedy EMS or DENTSPLY Cavitron(®) air polishing device. One of three glycine powders (Air-flow 25 µm, Clinpro 45 μm, Clinpro+TCP 45 μm) or a sodium bicarbonate powder (NaHCO3  85 μm) was sprayed on cementum using a clinically relevant sweeping motion...
July 2017: Odontology
https://www.readbyqxmd.com/read/27878641/dental-arch-spatial-changes-after-premature-loss-of-first-primary-molars-a-systematic-review-of-controlled-studies
#13
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...
July 2017: Odontology
https://www.readbyqxmd.com/read/27853978/sex-differences-of-dental-pathology-in-early-modern-samurai-and-commoners-at-kokura-in-japan
#14
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...
July 2017: 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
#15
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...
July 2017: Odontology
https://www.readbyqxmd.com/read/27803985/marginal-integrity-of-low-shrinking-versus-methacrylate-based-composite-effect-of-different-one-step-self-etch-adhesives
#16
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...
July 2017: Odontology
https://www.readbyqxmd.com/read/27796598/soft-tissue-changes-after-a-mandibular-osteotomy-for-symmetric-skeletal-class-iii-malocclusion
#17
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...
July 2017: 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
#18
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...
July 2017: 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
#19
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...
July 2017: Odontology
https://www.readbyqxmd.com/read/27770302/the-utility-of-bone-scintigraphy-in-the-assessment-of-mandibular-metabolism-during-long-term-bisphosphonate-administration
#20
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...
July 2017: Odontology
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