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Molar endo

Hiroki Miura, Yumi Tanaka, Karin Nakahara, Yuka Hachiya, Keisuke Endo, Tetsuya Shishido
A Pd and Au alloy efficiently catalyzed the [2+2+2] cycloaddition of substituted alkynes. While monometallic Pd and Au catalysts totally ineffective, Pd-Au alloy nanoparticle catalysts with a low Pd/Au molar ratio showed high activity to give the corresponding polysubstituted arenes in high yields. A variety of substituted alkynes participated in various modes of cycloaddition under Pd-Au alloy catalysis. The Pd-Au alloy catalysts exhibited high air-tolerance and reusability.
March 23, 2018: Angewandte Chemie
Mariko Ogura, Ryosuke Endo, Haruto Ishikawa, Yukiko Takeda, Takeshi Uchida, Kazuhiro Iwai, Kazuo Kobayashi, Koichiro Ishimori
Iron regulatory proteins (IRPs), regulators of iron metabolism in mammalian cells, control the translation of proteins involved in iron uptake, storage and utilization by binding to specific iron-responsive element (IRE) sequences of mRNAs. Two homologs of IRPs (IRP1 and IRP2) have a typical heme regulatory motif (HRM), a consensus sequence found in "heme-regulated proteins". However, specific heme binding to HRM has been reported only for IRP2, which is essential for oxidative modification and loss of binding to target mRNAs...
May 2018: Journal of Inorganic Biochemistry
Kenji Nomiya, Kohei Endo, Yuichi Murata, Shinya Sato, Sho Shimazaki, Shogo Horie, Eri Nagashima, Yuta Yasuda, Takuya Yoshida, Satoshi Matsunaga, Toshiaki Matsubara
Novel intercluster compounds consisting of pentakis[(triphenylphosphane)gold]ammonium(2+) cation (1) and Keggin polyoxometalate (POM) anions, i.e., {[Au(PPh3 )]5 (μ5 -N)}3 [α-PM12 O40 ]2 (1-PW for M = W; 1-PMo for M = Mo), were synthesized in 30-36% yield by one-pot reaction of the protonic acid form of the Keggin POMs, H3 [α-PM12 O40 ]·nH2 O (n = 13 for M = W; n = 15 for M = Mo) with monomeric (triphenylphosphane)gold(I) carboxylate [Au(RS-pyrrld)(PPh3 )] [RS-Hpyrrld = (RS)-2-pyrrolidone-5-carboxylic acid] in the presence of aqueous NH3 at a molar ratio of 2:15:x (x = 3 for 1-PW; x = 7...
February 5, 2018: Inorganic Chemistry
Yoshiko Sugiki, Yoshiki Kobayashi, Miwa Uozu, Toshiya Endo
The purpose of this study was to clarify differences in skeletal morphologies between male and female orthodontic patients with and without agenesis of all four third molars. A total of 64 patients (32 males and 32 females) with agenesis of all four third molars without agenesis of other teeth were selected as the third molars agenesis group (group 1). In addition, 64 patients (32 males and 32 females) with all these teeth were selected as controls (group 2). Lateral cephalograms taken between the ages of 14 and 30 years were used to compare skeletal morphology between groups 1 and 2 and between sexes...
January 12, 2018: Odontology
Prahlad A Saraf, P Ratnakar, Thimmanagowda N Patil, Raghavendra Penukonda, Laxmikant Kamatagi, Sneha S Vanaki
Aim: The purpose of this clinical study was to compare and clinically, to evaluate the accuracy of six apex locators with intra oral periapical (IOPA) radiograph in multirooted teeth. Materials and Methods: A total of 90 multirooted teeth (maxillary and mandibular molars) with irreversible, infected or necrotic pulp tissue and completely formed roots were included in this study and were divided randomly into six groups (Root ZX II, Raypex 6, I-Root, Romiapex A-15, Sybron Endo Mini and Root ZX mini)...
July 2017: Journal of Conservative Dentistry: JCD
Qing Shi, Ryugo Hashimoto, Tadamune Otsubo, Kiyoshi Ikeda, Kenichiro Todoroki, Hajime Mizuno, Dongri Jin, Toshimasa Toyo'oka, Zhe Jiang, Jun Zhe Min
The lack of a highly sensitive and simple method for the quantitative analysis of glycan has impeded the exploration of protein glycosylation patterns (glycomics), evaluation of antibody drug stability, and screening of disease glycan biomarkers. In this study, we describe a novel and simplified quantitative glycomics strategy. Quantitation by mutant enzyme reaction stable isotope labeling (QMERSIL) to label the N-glycans with either a nondeuterated (d0-) or deuterated (d8-) 4-(2,4-Dinitro-5-piperazin-1-yl-phenyl)-1,1-dimethyl-piperazin-1-ium (MPDPZ)-Boc-asparaginyl-N-acetyl-d-glucosamine (Boc-Asn-GlcNAc) acceptor of a positive charge structure through the glycosynthase (Endo-M-N175Q) transglycosylation reaction with mass spectrometry facilitates comparative glycomics...
February 5, 2018: Journal of Pharmaceutical and Biomedical Analysis
Minju Song, Minji Kang, Dae Ryong Kang, Hoi In Jung, Euiseong Kim
OBJECTIVES: The purpose of this retrospective clinical study was to evaluate the effect of lesion types related to endodontic microsurgery on the clinical outcome. MATERIALS AND METHODS: Patients who underwent endodontic microsurgery between March 2001 and March 2014 with a postoperative follow-up period of at least 1 year were included in the study. Survival analyses were conducted to compare the clinical outcomes between isolated endodontic lesion group (endo group) and endodontic-periodontal combined lesion group (endo-perio group) and to evaluate other clinical variables...
November 2, 2017: Clinical Oral Investigations
Mariane F L S Lacerda, Marília F Marceliano-Alves, Alejandro R Pérez, José C Provenzano, Mônica A S Neves, Fábio R Pires, Lucio S Gonçalves, Isabela N Rôças, José F Siqueira
INTRODUCTION: The present study evaluated the cleaning and shaping ability of 3 instrumentation systems in oval canals of extracted vital teeth using a correlative analytic approach. METHODS: Oval distal canals from 33 freshly extracted mandibular molars with pulp vitality were scanned by micro-computed tomographic (micro-CT) imaging for sample selection. Specimens matched by anatomic similarities were distributed into 3 experimental groups according to the instrument system to be evaluated: the Self-Adjusting File (SAF; ReDentNOVA, Ra'anana, Israel), TRUShape (Dentsply Sirona, Tulsa, OK), and XP-endo Shaper (FKG Dentaire, La Chaux-de-Fonds, Switzerland)...
November 2017: Journal of Endodontics
G Gambarini, P Ropini, L Piasecki, R Costantini, E Carneiro, L Testarelli, P M H Dummer
AIM: To investigate in vivo the complexity of canals within mesial roots of mandibular molars using 3D Endo™ software linked to CBCT images. METHODOLOGY: The CBCT images of 100 mandibular first molars were analysed using the 3D Endo™ software. The number of canals in the mesial roots, the presence of apical confluences, the canal lengths and the canal configurations using Vertucci's classification were evaluated in buccolingual (BL) and mesiodistal (MD) views...
March 2018: International Endodontic Journal
Athina M Mavridou, Lars Bergmans, Dick Barendregt, Paul Lambrechts
INTRODUCTION: The aim of this study was to perform a descriptive analysis of the occurrence of external cervical resorption (ECR) in relation to the patients' characteristics (sex, age, and tooth type) and the potentially involved predisposing factors. METHODS: This study includes data on 284 patients (337 teeth with evidence of ECR) referred to the University Hospital Leuven (Leuven, Belgium) and Endo Rotterdam (Rotterdam, the Netherlands) for diagnosis and treatment from 2010 to 2015...
October 2017: Journal of Endodontics
Yasushi Adachi, Masanori Nojima, Mitsuru Mori, Kentaro Yamashita, Hiro-O Yamano, Hiroshi Nakase, Takao Endo, Kenji Wakai, Kiyomi Sakata, Akiko Tamakoshi
AIM: To assess the relationship between serum levels of insulin-like growth factor-1 (IGF1)/IGF-binding protein-3 (IGFBP3) and the risk of esophageal carcinoma. METHODS: We assessed the relationship between the serum levels of these molecules and the risk of esophageal cancer in a prospective, nested case-control study of participants from the Japan Collaborative Cohort Study. A baseline survey was conducted from 1988 to 1990. Of the 110585 enrolled participants, 35% donated blood samples...
May 21, 2017: World Journal of Gastroenterology: WJG
I Kaşıkçı Bilgi, I Köseler, P Güneri, M Hülsmann, M K Çalışkan
AIM: To compare the amount of apically extruded debris and of remaining filling material during the removal of root canal filling material using three rotary NiTi retreatment instruments or Hedström files. METHODOLOGY: Ninety-six severely curved human molars of both jaws were selected. The root canals were prepared to size X2 (tip size 25, .06 taper) using the ProTaper Next system (Dentsply Sirona, Ballaigues, Switzerland), filled with gutta-percha and AH Plus sealer (Dentsply De Trey, Konstanz, Germany) and then randomly divided into four experimental groups (n = 24 each) with two subgroups of maxillary and mandibular teeth each...
October 5, 2016: International Endodontic Journal
Yasushi Adachi, Masanori Nojima, Mitsuru Mori, Yasutaka Matsunaga, Noriyuki Akutsu, Shigeru Sasaki, Takao Endo, Youichi Kurozawa, Kenji Wakai, Akiko Tamakoshi
Insulin-like growth factor-1 (IGF1) is a potent mitogen. IGF-binding protein-3 (IGFBP3) binds and inhibits IGF1. High circulating IGF1 levels and low IGFBP3 levels are associated with increased risk of several cancers. We examined relationships between serum levels of these factors and hepatoma risk in a case-control study nested in a prospective cohort study (the Japan Collaborative Cohort Study (JACC Study)). A baseline survey was conducted from 1988 to 1990, and 39,242 subjects donated blood samples. Participants diagnosed with hepatoma by 1997 were considered cases for nested case-control studies...
November 2016: Tumour Biology: the Journal of the International Society for Oncodevelopmental Biology and Medicine
Flávio R F Alves, Carlos V Andrade-Junior, Marília F Marceliano-Alves, Alejandro R Pérez, Isabela N Rôças, Marco A Versiani, Manoel D Sousa-Neto, José C Provenzano, José F Siqueira
INTRODUCTION: This study evaluated the disinfecting ability of chemomechanical preparation with rotary nickel-titanium instruments, followed by 2 distinct adjunctive procedures in the root canals of extracted mandibular molars by means of a correlative analytical approach. METHODS: Twenty-two extracted mandibular molars were selected and anatomically matched between groups on the basis of micro-computed tomographic analysis. In the first phase of the experiment, root canals were contaminated with Enterococcus faecalis and subjected to chemomechanical preparation with BT RaCe instruments and 2...
November 2016: Journal of Endodontics
Chika Hirakata, Sugako Sanpei, Shinya Sanpei, Satoshi Tanaka, Toshiya Endo, Tsuneo Sekimoto
This study was conducted to investigate the association between symmetrical agenesis of the mandibular third molars and agenesis of other teeth in Japanese orthodontic patients. A sample of 64 patients with symmetrical agenesis of the mandibular third molars and without agenesis of the maxillary third molars was selected as the third molar agenesis group. In addition, 585 patients with all 4 third molars were selected as controls. The main materials examined for diagnosis of tooth agenesis were panoramic radiographs...
2016: Journal of Oral Science
Prasanna Neelakantan, Sharmila Devaraj, Nithya Jagannathan
INTRODUCTION: This study aimed to evaluate the efficacy of a new irrigation system (EndoIrrigator Plus; Innovations Endo, Nasik, India) using a histologic method ex vivo. METHODS: Mandibular molars with a normal pulp extracted for periodontal reasons (N = 68) were assessed for the presence of an isthmus using cone-beam computed tomographic imaging. Root canals of the included molars (n = 40) were instrumented up to a ProTaper F2 instrument (Dentsply Maillefer, Baillagues, Switzerland) using 3% sodium hypochlorite as irrigant in a closed apical design...
August 2016: Journal of Endodontics
Flávio R F Alves, Marília F Marceliano-Alves, Júlio Cézar N Sousa, Stephanie B Silveira, José C Provenzano, José F Siqueira
INTRODUCTION: This study compared the efficacy of a reciprocating single-instrument system and a rotary multi-instrument system followed by a supplementary approach with a finishing instrument in removing the filling material from curved canals during retreatment. METHODS: Forty mesial canals from extracted mandibular molars were instrumented and filled. Then, each mesial canal was retreated by using either Reciproc (VDW, Munich, Germany) or Mtwo (VDW) instruments, alternating the technique used per canal from root to root...
July 2016: Journal of Endodontics
Amr M Elnaghy, Ayman Mandorah, Shaymaa E Elsaka
The purpose of this study was to assess the efficacy of the XP-endo Finisher (FKG Dentaire SA, La Chaux-de-Fonds, Switzerland) file on debris and smear layer removal in curved root canals in comparison to different irrigation regimens. Seventy-five freshly extracted human mandibular molar teeth with mesial root curved more than 20° were used in this study. The mesial root canals were mechanically prepared using the BT-Race rotary system (FKG Dentaire) and divided into five groups (n = 15) according to the following irrigation techniques: positive control, non-agitated, File agitation, XP-endo Finisher, and EndoActivator (Dentsply Tulsa Dental Specialities, Tulsa, OK, USA)...
April 2017: Odontology
G B Leoni, M A Versiani, Y T Silva-Sousa, J F B Bruniera, J D Pécora, M D Sousa-Neto
AIM: To evaluate the efficacy of four final irrigation protocols on the reduction of hard-tissue debris accumulated within the mesial root canal system of mandibular first molars using micro-CT analysis. METHODOLOGY: Forty mesial roots of mandibular molars with a single and continuous isthmus connecting the mesiobuccal and mesiolingual canals (Vertucci's Type I configuration) were selected and scanned at a resolution of 8.6 μm. Canals were enlarged sequentially using WaveOne Small and Primary instruments activated in reciprocating motion without intracanal irrigation to allow debris to accumulate within the mesial root canal system...
April 2017: International Endodontic Journal
Sivil Kopilevich, Achim Müller, Ira A Weinstock
Using the hydrolysis of epoxides in water as a model reaction, the effect of multiple active sites on Michaelis-Menten compliant rate accelerations in a porous capsule is demonstrated. The capsule is a water-soluble Ih-symmetry Keplerate-type complex of the form, [{Mo(VI)6O21(H2O)6}12{Mo(V)2O4(L)}30](42-), in which 12 pentagonal "ligands," {(Mo(VI))Mo(VI)5O21(H2O)6}(6-), are coordinated to 30 dimolybdenum sites, {Mo(V)2O4L}(1+) (L = an endohedrally coordinated η(2)-bound carboxylate anion), resulting in 20 Mo9O9 pores...
October 14, 2015: Journal of the American Chemical Society
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