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Takahiro Iwasaki, Hideki Fukuda, Masayasu Kitamura, Yumiko Kawashita, Hideaki Hayashida, Reiko Furugen, Zenya Koyama, Yuichi Ando, Toshiyuki Saito
We investigated the relationship between the number of pairs of posterior teeth and metabolic syndrome (MetS), abdominal obesity (AO), and obesity, among Japanese adults. In 2005, 2,807 Japanese adults aged 25-74 years participated in the Survey of Dental Diseases and the National Health and Nutrition Survey. Based on the survey data, BMI, AO (JAS) determined by the Japan Atherosclerosis Society, AO (IDF) by the International Diabetes Federation, and MetS were assessed. Total functional tooth units (t-FTUs) were scored with pairs of opposing posterior teeth, including artificial teeth...
September 14, 2018: Odontology
Cevat Emre Erik, Taha Özyürek
The aim of the present study was to compare the effect of etidronic acid (HEBP), NaOCl, and EDTA solutions and their combinations on cyclic fatigue resistance of NiTi RPC Blue (RPC Blue), HyFlex EDM (HEDM), and WaveOne Gold (WOG) instruments having different metallurgic characteristics at the body temperature (37 °C). 100 WOG, 100 RPC Blue, and 100 HEDM NiTi files were randomly divided into 5 groups and immersed in the following solutions: group 1, distilled water; group 2, 6% NaOCl; group 3, 17% EDTA; group 4, 18% HEBP; group 5, 6% NaOCl and 18% HEBP...
September 12, 2018: Odontology
Marijana Rincic Mlinaric, Sven Karlovic, Zlatko Ciganj, Darko Pop Acev, Andrej Pavlic, Stjepan Spalj
The effect of oral antiseptics on the corrosion of nickel-titanium (NiTi) alloys with various coating was investigated. Uncoated, titanium nitride-coated and rhodium-coated NiTi archwires (0.020 × 0.020″) were tested in interaction with artificial saliva pH 4.8 and oral antiseptics based on hyaluronic acid (Gengigel), chlorhexidine (Curasept) and essential oils in alcohol base (Listerine). The dynamics of nickel and titanium ions release were recorded during 28 days. Springback ratio and modulus of resilience were assessed by three-point bending test...
September 3, 2018: Odontology
Funda Fundaoğlu Küçükekenci, Ahmet Serkan Küçükekenci, Fatih Çakici
The aim of this in vitro study was to evaluate the preventive efficacy of three dentin tubule occlusion methods against discoloration caused by triple-antibiotic paste (TAP). Sixty extracted human incisors were sectioned, and the access was opened. The specimens were randomly allocated to the following four groups (n = 15): bonding application (BD), teethmate desensitizer (TM), Nd:YAG laser application (LS), and no surface treatment (control, C). Specimens were discolored with TAP over a period of 3 weeks...
August 31, 2018: Odontology
Turki A Bakhsh, Nour H Altouki, Lina S Baeesa, Ruba A Baamer, Reema M Alshebany, Zuhair Natto, Adnan Nasir, Alaa Turkistani, Fatin Hasanain, Ghada H Naguib
Despite improvements in dental adhesive materials, internal adaptation remains a challenge in bonded restorations. The aim of this study was to compare microgaps and internal floor adaptation between two different self-etch adhesives in class-V cavities using cross-polarization optical coherence tomography (CP-OCT). In this in vitro study, standardized round class-V cavities were prepared in 20 non-carious human upper central incisor teeth. They were randomly divided into two groups, TN and SE, with each group receiving a different dental adhesive...
August 9, 2018: Odontology
Mario Pérez-Sayáns, Alejandro I Lorenzo-Pouso, Pablo Galindo-Moreno, Fernando Muñoz-Guzón, Antonio González-Cantalapiedra, Mónica López-Peña, Manuel Somoza-Martín, Mercedes Gallas-Torreira, Abel García-García
This study compared the in vivo behavior of two biomaterials, xenograft (Bio-Oss® ) and alloplastic tricalcium phosphate (Sil-Oss® ), vs a control (no biomaterial) in beagle dogs treated with guided bone regeneration (GBR). Six male adult beagle dogs were included. The third and fourth mandibular premolars and first mandibular molars (3P3, 4P4 and 1M1) on both sides were extracted. After 12 weeks of healing, Straumann implants (3.3 × 8 mm) were placed, performing standardized defects (3.3 × 6 mm) in the vestibular aspect of the alveolar bone...
August 9, 2018: Odontology
Bahareh Nazemisalman, Surena Vahabi, Ehsan Sabouri, Sepanta Hosseinpour, Sara Doaju
Chronic periodontitis (CP) is a multifactorial disease and the most common type of periodontitis mainly caused by microbial plaque. Insufficient oral hygiene may initiate CP and it can be further modified and progressed by environmental and genetic susceptibilities. The aim of the present study was to investigate the association between VDBP (rs7041 and rs4588) and (Taq 1-rs7975232 and Apa1-rs731236) SNPs of VDR gene receptor and susceptibility to CP in an Iranian population. Sixty nine cases with diagnosis of CP and 78 matched healthy controls engaged in this study...
August 6, 2018: Odontology
Kayoko Fukui, Kenjirou Nakamura, Haruhiro Kuwashima, Toshiro Majima
Measuring the production of Candida dubliniensis (C. dubliniensis) phospholipase B (PLase B) by the Price's method has long been considered to be unattainable because the levels of PLase produced are undetectable. In this study, C. dubliniensis, C. glabrata, C. guilliermondii, C. krusei, C. parapsilosis and C. tropicalis were shown to produce PLase B and form clear white zones around their colonies when peptone, a component of the original Price's egg yolk (OP) agar, is replaced with a yeast nitrogen base (YNB)...
August 6, 2018: Odontology
Susanne Jung, Viktor Libricht, Sonja Sielker, Marcel R Hanisch, Edgar Schäfer, Till Dammaschke
The aim of this study was to evaluate the biocompatibility of two comparatively new calcium silicate containing sealers (MTA-Fillapex and BioRoot-RCS) with that of two established sealers (AH-Plus, epoxy resin-based; Pulp-Canal-Sealer, zinc oxide eugenol containing). Human periodontal ligament cells (PDL-cells) were brought in contact with eluates from freshly mixed and set sealer. The sealers were mixed strictly according to the manufacturers' instructions and identically samples were produced. 1:1, 1:2, and 1:10 dilutions of sealers extract were used...
July 23, 2018: Odontology
On Hasegawa, Takafumi Satomi, Michihide Kono, Masato Watanabe, Naoki Ikehata, Daichi Chikazu
Positron emission tomography/computed tomography (PET/CT) examinations are indispensable in determining the stage, evaluating the treatment response, and diagnosing recurrence and metastasis during oral cancer treatment. In this study, we examined the correlation between the maximum standardized uptake value (SUVmax) for 18 F-FDG PET/CT and the progressive factors, biological characteristics, and prognosis of oral cancer. We included 52 cases of oral squamous cell carcinoma with surgery as the initial treatment...
July 23, 2018: Odontology
Haomiao Zhang, Yasuko Moriyama, Yasunori Ayukawa, Yunia Dwi Rakhmatia, Yoko Tomita, Noriyuki Yasunami, Kiyoshi Koyano
The purpose of this study was to evaluate the effects of a poly(lactic-co-glycolic acid) (PLGA) membrane containing fluvastatin on bone regeneration at bone defects in rat calvaria and tibia for possible use as a guided bone regeneration (GBR) membrane. PLGA and fluvastatin-containing PLGA (PLGA-fluvastatin) membranes were prepared and mechanical properties were evaluated. Standardized bony defects were created in rat calvaria and the right tibia, and covered with a PLGA or PLGA-fluvastatin membrane. Bone regeneration was evaluated using image analysis based on histologic examination...
July 18, 2018: Odontology
Mustafa Ayna, Bastian Wessing, Ralf Gutwald, Andreas Neff, Thomas Ziebart, Yahya Açil, Jörg Wiltfang, Aydin Gülses
The aim of this paper was to demonstrate the treatment outcomes following immediate functional loading concept of short implants inserted for single tooth replacement in the posterior maxilla. The study was performed on 63 patients who received short (6 mm) implants for single tooth replacement in the posterior maxilla. Forty-eight patients underwent immediate functional concept, whereas 15 of the implants were loaded 3 months after insertion. The patients were evaluated for up to 5 years after prosthesis completion...
July 17, 2018: Odontology
Takashi Maehara, Masafumi Moriyama, Seiji Nakamura
Immunoglobulin G4 (IgG4)-related disease (IgG4-RD) is a chronic, systemic, inflammatory condition of unknown etiology. Histopathologic examination is the key to diagnosis of IgG4-RD. The histopathologic features of IgG4-RD are lymphoplasmacytic infiltration, storiform fibrosis, and obliterative phlebitis. As for fewer than 15 years, IgG4-RD has been recognized as a unified diagnostic entity. CD4+ T and B cells, which likely cause organ damage and disabling tissue fibrosis, constitute the major inflammatory cell population in patients with IgG4-RD...
July 17, 2018: Odontology
Michino Sakihara, Yohsuke Taira, Takashi Sawase
This study aims to evaluate the effects of etching with sulfuric acid (SA) and vinyl sulfonic acid (VSA) on the bond strength between a light-curing indirect resin composite and polyetherketoneketones (PEKK). PEKK specimens were ground with 600 silicon carbide papers, etched with 90% SA for 5 s (90-5 SA) or 95% VSA for 30 s (95-30 VSA), and then modified with a phosphate primer; afterward, a light-curing resin composite was veneered on the specimens. Two control groups were also prepared without etching (unetched/unprimed and unetched/primed)...
July 5, 2018: Odontology
Cristian Bersezio, Javier Martín, Pablo Angel, Jessica Bottner, Isidora Godoy, Francisca Avalos, Eduardo Fernández
This study aimed to evaluate color longevity after 2 years of whitening gel (6% hydrogen peroxide (HP), blue LED/infrared laser activation system) in comparison to a control 35% concentration in a split-mouth study and investigate the long-term effect on quality of life (QOL).Thirty-one patients were treated. Whitening using 6% or 35% HP gel was performed on half of the upper jaw in each patient. The color was measured at baseline and 1 week, 1 month, 1 and 2 years after treatment using the Easyshade Vita spectrophotometer and the Vita Bleached and Vita Classical Shade Guides organized by value...
June 30, 2018: Odontology
Thuy Thu Nguyen, Nam Nhat-Cong Huynh, Sujiwan Seubbuk, Thanapoj Nilmoje, Aree Wanasuntronwong, Rudee Surarit
Porphyromonas gingivalis (P. gingivalis) and nicotine have been implicated as a major pathogen in the development and progression of periodontitis. One of the possible mechanism is via the oxidative stress of human periodontal ligament fibroblasts (PDLF) which lead to the damage of cell viability and function. This study aimed to investigate oxidative stress (OS) levels in the cultured media of human PDLF under the induction of P. gingivalis lysate and nicotine. Primary PDLF was cultured in growth media under P...
June 29, 2018: Odontology
Prasanna Neelakantan, Hani F Ounsi, Sharmila Devaraj, Gary S P Cheung, Simone Grandini
The aim of this study was to evaluate the removal of the smear layer by some commonly used (needle-and-syringe irrigation, sonic activation, ultrasonically activated irrigation) and new root canal irrigation strategies (negative pressure irrigation and polymer rotary file) using a novel approach by comparing pre- and post-experimental images. Prepared root canals (n = 50) were subjected to a split tooth model and divided into 5 groups (n = 10): (1) needle-and-syringe irrigation (control); (2) sonic activation (SA); (3) negative pressure irrigation with continuous warm activated irrigation and evacuation (CWA); (4) polymer finishing file (FF); (5) ultrasonically activated irrigation (UAI)...
June 28, 2018: Odontology
Mounir Ghabriel, Kojiro Takezawa, Grant Townsend
This article, for both researchers and clinicians, presents an overview of the lingual nerve and highlights how new insights into human anatomical variability can be gained by integrating fine dissection of cadavers with neuroanatomical approaches, microscopic studies, and morphometric techniques. Textbooks mainly provide descriptions of the typical or common gross anatomical appearance of structures in the human body with little reference to the nature and extent of variation that may be encountered within and between populations...
June 25, 2018: Odontology
Stefano Ardu, O Duc, E Di Bella, I Krejci, René Daher
In the original publication of the article, the author's name "Prof. René Daher" was inadvertently missed in the author group. This has been updated in this erratum. Also, the original article has been corrected.
July 2018: Odontology
Xuefang Ding, Shoichi Suzuki, Momotoshi Shiga, Naoto Ohbayashi, Toru Kurabayashi, Keiji Moriyama
The aims of this study were to reveal the usefulness of a newly developed method for measuring tongue volume (TV) and oral cavity capacity (OCC) and to assess the relationship between them. The tongue was coated with a contrast agent, and the TV and OCC were determined using cone-beam computed tomography (CBCT). We enrolled 20 adults who were scheduled to undergo CBCT to evaluate the relationship of the third molar roots to the alveolar nerve before molar extraction. Each participant's tongue was coated with a contrast agent, and CBCT of the tongue and oral cavity was performed...
July 2018: Odontology
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