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P-type transparent conducting characteristics of delafossite Ca doped CuScO prepared by hydrothermal synthesis.

Dalton Trans 2021 Apr;50(15):5262-5268

State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, Wuhan 430070, P. R. China. and Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan 430074, P. R. China.

Ca doped CuScO2 (CSO) delafossite oxides of 3-4 μm were synthesized through the hydrothermal method using Cu(NO3)2·3H2O, Sc(NO3)3·xH2O as the precursor at 240 °C for 24 h in this work. The influence of the process parameters (reaction temperature, Cu/Sc molar ratios, EG (ethylene glycol) quantity, NaOH mineralizer, reactant concentration) on the structure and morphology of CSO was studied systematically. The crystal structure, morphology, and chemical composition of these Ca doped CSO (0, 1 at%, 3 at%, and 5 at%) sheets were analyzed by X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), transmission electron microscopy (TEM), and X-ray photoelectron spectroscopy (XPS). Read More

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Carbon source affects synthesis, structures, and activities of mycelial polysaccharides from medicinal fungus .

J Microbiol Biotechnol 2021 Apr 21;31(5). Epub 2021 Apr 21.

State Key Laboratory of Agricultural Microbiology, College of Life Science and Technology, Huazhong Agricultural University, Wuhan 430070, PR China.

Effects of various carbon sources on mycelial growth and polysaccharide synthesis of the medicinal fungus in liquid fermentation were investigated. After 12-d fermentation, mycelial biomass, polysaccharide yield, and polysaccharide content were significantly higher in Glc+Lac group (glucose and lactose used as combined carbon source) than in other groups. Crude polysaccharides (CIOPs) and the derivative neutral polysaccharides (NIOPs) were obtained from mycelia fermented using Glc, fructose (Fru), Lac, or Glc+Lac as carbon source. Read More

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An Effective Strategy for the Production of Lauric Acid-Enriched Monoacylglycerol via Enzymatic Glycerolysis from Black Soldier Fly (Hermetia illucens) Larvae (BSFL) Oil.

Appl Biochem Biotechnol 2021 Apr 19. Epub 2021 Apr 19.

School of Food Science and Engineering, South China University of Technology, Guangzhou, 510640, China.

Here, we developed an efficient strategy for the production of lauric acid-enriched monoacylglycerol (MAG) via enzymatic glycerolysis using black soldier fly (Hermetia illucens) larvae (BSFL) oil. The effects of the substrate molar ratio, reaction temperature, type of immobilized lipase, and organic solvent on the MAG content and conversion degree of BSFL oil were optimized. The maximum substrate conversion rate (97. Read More

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Failure Load of Monolithic Lithium Disilicate Implant-Supported Single Crowns Bonded to Ti-base Abutments versus to Customized Ceramic Abutments after Fatigue.

J Prosthodont 2021 Apr 19. Epub 2021 Apr 19.

Department of Prosthodontics, Medical Faculty and University Hospital Düsseldorf, Heinrich-Heine-University, Düsseldorf, Germany.

Purpose: This laboratory study analyzed the influence of retention mode (screw- vs. cement retained) and fatigue application on the failure load of monolithic lithium-disilicate (LDS) implant-supported single crowns (ISSC).

Material And Methods: A total of 72 samples of monolithic LDS (*Ivoclar Vivadent) ISSC were divided into three Groups (n = 24) according to their type of retention mode: Group Ti-CAD: Titanium base (SICvantage CAD/CAM Abutment red (SIC invent AG), screw-retained milled monolithic LDS (IPS e. Read More

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Mouse mandibular retromolar taste buds associated with a mucus salivary gland.

Chem Senses 2021 Apr 15. Epub 2021 Apr 15.

Monell Chemical Senses Center, Philadelphia, PA, USA.

We have characterized a recently rediscovered chemosensory structure at the rear of the mandibular mucosa in the mouse oral cavity originally reported in the 1980s. This consists of unorganized taste buds, not contained within troughs, associated with the ducts of an underlying minor salivary gland. Using whole-mount preparations of transgenic mice expressing green fluorescent protein under the promoter of taste-signaling-specific genes, we determined that the structure contains taste bud clusters and salivary gland orifices at the rear of each mandible, distal to the last molar and anterior to the ascending ramus. Read More

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Short-Wave Infrared-Sensing Organic Phototransistors with a Triarylamine-Based Polymer Doped with a Lewis Acid-Type Small Molecule.

ACS Appl Mater Interfaces 2021 Apr 14. Epub 2021 Apr 14.

Organic Nanoelectronics Laboratory and KNU Institute for Nanophotonics Applications (KINPA), Department of Chemical Engineering, School of Applied Chemical Engineering, Kyungpook National University, Daegu 41566, Republic of Korea.

Here, we report that a triarylamine-based polymer, poly[,'-bis(4-butylphenyl)-,'-bis(phenyl)benzidine] (PolyTPD), is effectively doped with tris(pentafluorophenyl)borane (BCF) and the doping level is dependent on the molar ratio of BCF to PolyTPD (repeating unit). The doping reaction is performed at 25 °C at the solution states using chlorobenzene solvent by varying the BCF molar ratio up to 2.0. Read More

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Comparison of the treatment outcomes of the conventional stainless steel crown restorations and the hall technique in the treatment of carious primary molars.

Niger J Clin Pract 2021 Apr;24(4):584-594

Department of Child Dental Health, College of Medicine, University of Lagos, Nigeria.

Background: Dental caries is a multifactorial disease that causes reversible decalcification and cavitation of susceptible teeth exposed to sugary substrates over a period of time in the oral cavity. It gives clinical and social burdens to the child patients and their parents/carers. Stainless steel crown (SSC) restoration is one of the restorative treatment options in the management of carious primary molars. Read More

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Bacterial Microcompartments Coupled with Extracellular Electron Transfer Drive the Anaerobic Utilization of Ethanolamine in Listeria monocytogenes.

mSystems 2021 Apr 13;6(2). Epub 2021 Apr 13.

Food Microbiology, Wageningen University and Research, Wageningen, the Netherlands

Ethanolamine (EA) is a valuable microbial carbon and nitrogen source derived from cell membranes. EA catabolism is suggested to occur in a cellular metabolic subsystem called a bacterial microcompartment (BMC), and the activation of EA utilization () genes is linked to bacterial pathogenesis. Despite reports showing that the activation of is regulated by a vitamin B-binding riboswitch and that upregulation of genes occurs in mice, it remains unknown whether EA catabolism is BMC dependent in Here, we provide evidence for BMC-dependent anaerobic EA utilization via metabolic analysis, proteomics, and electron microscopy. Read More

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Copper molybdate synthesized by sonochemistry route at room temperature as an efficient solid catalyst for esterification of oleic acid.

Ultrason Sonochem 2021 May 26;73:105541. Epub 2021 Mar 26.

Department of Chemistry, Federal University of Amazonas, Manaus 69077-000, Brazil.

Copper molybdate nanoplates were synthesized by a sonochemical process at room temperature, which we report as a simple and cost-effective route. Structural analysis of the material by the Rietveld method of X-ray diffraction (XRD) data revealed lindgrenite Cu(MoO)(OH) in a single-phase structure. All the vibrational modes characteristic of the space group were identified by Raman vibrational and near-infrared (NIR) spectroscopies. Read More

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Three-Dimensional Tooth Models with Pulp Cavity Enhance Dental Anatomy Education.

Anat Sci Educ 2021 Apr 8. Epub 2021 Apr 8.

Jiangsu Key Laboratory of Oral Diseases, Nanjing Medical University, Nanjing, People's Republic of China.

Dental anatomy is an integrated, core fundamental dental course, which prepares students for all future clinical dental courses. This study aimed to build up an online dental learning platform of micro-computed tomography-based three-dimensional (3D) tooth models with pulp cavity, and to further evaluate its effectiveness for dental anatomy education using a cohort study. First, ninety-six extracted permanent teeth were scanned by micro-computed tomography and the enamel, dentine, and pulp cavity of each was distinguished by different grey-scale intensities using Mimics software. Read More

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Tuning morphology of Pickering emulsions stabilised by biodegradable PLGA nanoparticles: How PLGA characteristics influence emulsion properties.

J Colloid Interface Sci 2021 Aug 17;595:202-211. Epub 2021 Mar 17.

Université Paris-Saclay, CNRS, Institut Galien Paris-Saclay, 92296 Châtenay-Malabry, France. Electronic address:

In this study, we proved that the stabilisation of Pickering emulsions by polymer nanoparticles (NPs) heavily depends on polymer characteristics. We prepared NPs with four poly(lactide-co-glycolide) polymers (PLGA), of different molar masses (14,000 and 32,000 g/mol) and end groups (acid or alkylester). NPs were either bare (without stabilising polymer) or covered by polyvinyl alcohol (PVA). Read More

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Prevalence of Peri-Implantitis and Peri-Implant Mucositis among Implant Patients: A Dental University Based Study.

J Long Term Eff Med Implants 2021 ;31(1):59-64

Department of Pedodontics and Preventive Dentistry, Saveetha Dental College and Hospitals, Saveetha Institute of Medical and Technical Sciences (SIMATS), Saveetha University, Chennai - 600077, India.

The term peri-implantitis describes an inflammatory disease that results in the loss of supporting bone around an implant. It differs from mucositis in which the inflammation of mucosa surrounding an implant is not accompanied by bone loss and is reversible. Peri-implant diseases are not uncommon following implant therapy. Read More

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January 2021

Microdont Developing Outside the Alveolar Process and Within Oral Diffuse and Plexiform Neurofibroma in Neurofibromatosis Type 1.

Anticancer Res 2021 Apr;41(4):2083-2092

Private Practice in Orthodontics, Hamburg-Lokstedt, Germany.

Background/aim: Numerical aberrations of permanent dentition and dystopic tooth eruption are part of the phenotype of the tumor predisposition syndrome neurofibromatosis type 1 (NF1). In these cases, surplus tooth germs usually develop in the alveolar processes of the jaw. This report attests to the dystopic development of a dysplastic supernumerary tooth in NF1 arising outside the jaw. Read More

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An Update on Endodontic Microsurgery of Mandibular Molars: A Focused Review.

Medicina (Kaunas) 2021 Mar 16;57(3). Epub 2021 Mar 16.

Department of Conservative Dentistry, School of Dentistry, Jeonbuk National University, Jeonju 54896, Korea.

Endodontic microsurgery is a highly predictable treatment option in most cases when conventional endodontic treatment is not feasible. Nevertheless, mandibular molars are still considered by clinicians to be the most difficult type of teeth, with the lowest success rate. In recent years, endodontic microsurgery has been attempted more frequently with the emergence of modern cutting-edge technologies such as dental operating microscopes, various microsurgical instruments, and biocompatible materials, and the success rate is increasing. Read More

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Green Solvents as an Alternative to DMF in ZIF-90 Synthesis.

Molecules 2021 Mar 12;26(6). Epub 2021 Mar 12.

Department of Inorganic Chemistry and Technology, National Institute of Chemistry, Hajdrihova 19, SI-1001 Ljubljana, Slovenia.

The use of green solvents as an alternative to dimethylformamide (DMF) in the synthesis of zeolitic imidazolate framework-90 (ZIF-90) was investigated. Two biobased aprotic dipolar solvents Cyrene and γ-valerolactone (GVL) proved to successfully replace DMF in the synthesis at room temperature with a high product yield. While the Cyrene-based product shows reduced porosity after activation, the use of GVL resulted in materials with preserved crystallinity and porosity after activation, without prior solvent exchange and a short treatment at 200 °C. Read More

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Synthesis and Characterization of Polymer-Based Coatings Modified with Bioactive Ceramic and Bovine Serum Albumin.

J Funct Biomater 2021 Mar 30;12(2). Epub 2021 Mar 30.

Institute of Materials Science, Faculty of Materials Science and Physics, Cracow University of Technology, 37 Jana Pawła II Av., 31-864 Krakow, Poland.

This study involves the synthesis of hydroxyapatite and describes the preparation and characterization of polymer coatings based on poly(ethylene glycol) diacrylate and poly(ethylene glycol) and modified with bovine serum albumin and hydroxyapatite. Hydroxyapatite was obtained by wet chemical synthesis and characterized by X-ray diffraction and FTIR spectroscopy, and its Ca/P molar ratio was determined (1.69 ± 0. Read More

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Simple Synthesis of Molybdenum Carbides from Molybdenum Blue Nanoparticles.

Nanomaterials (Basel) 2021 Mar 30;11(4). Epub 2021 Mar 30.

Department of Chemical Technology of Carbon Materials, Faculty of Petroleum Chemistry and Polymers, D. Mendeleev University of Chemical Technology of Russia, Miusskaya sq., 9, 125047 Moscow, Russia.

In recent years, much attention has been paid to the development of a new flexible and variable method for molybdenum carbide (MoC) synthesis. This work reports the applicability of nano-size clusters of molybdenum blue to molybdenum carbide production by thermal treatment of molybdenum blue xerogels in an inert atmosphere. The method developed made it possible to vary the type (glucose, hydroquinone) and content of the organic reducing agent (molar ratio R/Mo). Read More

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Macromolecular Model of the Pectic Polysaccharides Isolated from the Bark of Norway Spruce ().

Polymers (Basel) 2021 Mar 31;13(7). Epub 2021 Mar 31.

Division of Wood Chemistry and Pulp Technology, Department of Fibre and Polymer Technology, KTH Royal Institute of Technology, Teknikringen 56, SE-100 44 Stockholm, Sweden.

The bark of Norway spruce () contains up to 13% pectins that can be extracted by pressurized hot water, which constitute a valuable renewable resource in second-generation lignocellulosic biorefineries. This article proposes, for the first time, structural molecular models for the pectins present in spruce bark. Pectin fractions of tailored molar masses were obtained by fractionation of the pressurized hot water extract of the inner bark using preparative size-exclusion chromatography. Read More

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Gossypol Exhibited Higher Detrimental Effect on Ruminal Fermentation Characteristics of Low-Forage in Comparison with High-Forage Mixed Feeds.

Toxics 2021 Mar 8;9(3). Epub 2021 Mar 8.

State Key Laboratory of Animal Nutrition, College of Animal Science and Technology, China Agricultural University, Beijing 100193, China.

Gossypol is a key anti-nutritional factor which limits the feeding application of cottonseed by-products in animal production. A 2 × 4 factorial in vitro experiment was conducted to determine the effect of gossypol addition levels of 0, 0.25, 0. Read More

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Modulating solvation interactions of deep eutectic solvents formed by ammonium salts and carboxylic acids through varying the molar ratio of hydrogen bond donor and acceptor.

J Chromatogr A 2021 Apr 18;1643:462011. Epub 2021 Feb 18.

Ames Laboratory-USDOE and Department of Chemistry, Iowa State University, Ames, Iowa 50011, United States. Electronic address:

Deep eutectic solvents (DESs) have gained increasing popularity in separation science due to the fact that their physico-chemical properties can be easily fine-tuned by varying the type or ratio of hydrogen bond acceptor (HBA) and hydrogen bond donor (HBD). While it is well-known that the molar ratio of HBA/HBD affects the melting point of a eutectic mixture, much less is understood regarding its effect on the magnitude of individual solvation interactions. This is largely due to the fact that established solvatochromic dye methods lack sensitivity when the HBA/HBD ratio is varied slightly in a eutectic mixture. Read More

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Effects of Impacted Lower Third Molar Extraction on Periodontal Tissue of the Adjacent Second Molar.

Ther Clin Risk Manag 2021 22;17:235-247. Epub 2021 Mar 22.

Shanxi Medical University School and Hospital of Stomatology, Taiyuan, 030001, People's Republic of China.

The extraction of impacted lower third molars (ILTM) is one of the most common procedures in oral-maxillofacial surgery. Being adjacent to lower second molars, most impacted lower third molars often lead to distal periodontal defects of adjacent second molars. Several symptoms may occur after extraction, such as periodontal pocket formation, loss of attachment, alveolar bone loss and even looseness of second molar resulting in extraction. Read More

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Orally administered saccharide-sequestering nanocomplex to manage carbohydrate metabolism disorders.

Sci Adv 2021 Mar 31;7(14). Epub 2021 Mar 31.

School of Biomedical Engineering, Shanghai Jiao Tong University, Shanghai 200240, P. R. China.

Excessive carbohydrate intake is linked to the growing prevalence of diabetes, nonalcoholic fatty liver disease (NAFLD), and obesity. α-Glucosidases inhibitor, the only Food and Drug Administration-approved drug for limiting the absorption of polysaccharides and disaccharides, is ineffective for monosaccharides. Here, we develop a boronic acid-containing polymer nanocomplex (Nano-Poly-BA), absorbing all saccharides into nanocomplex with the diol/boronic acid molar ratio far above 1, to prevent saccharides' absorption in the gut. Read More

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A critical analysis of sono-hybrid advanced oxidation process of ferrioxalate system for degradation of recalcitrant pollutants.

Chemosphere 2021 Mar 19;277:130324. Epub 2021 Mar 19.

Department of Chemical Engineering, Indian Institute of Science Education and Research Bhopal, Bhopal, 462 066, Madhya Pradesh, India. Electronic address:

The emerging contaminants in wastewater discharged from numerous chemical process industries, pharmaceutical industries, textile, and wineries have attracted the attention of the scientific community due to their toxicity and persistence in the environment. The conventional techniques are incompetent to treat many of such recalcitrant toxic pollutants. To achieve high mineralization, advanced oxidation processes (AOPs) are found to be more efficient for the degradation of these organic pollutants without producing secondary pollutants with no/less amount of sludge. Read More

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Analysis of complications after the removal of 339 third molars.

Dent Med Probl 2021 Jan-Mar;58(1):75-80

Department of Cranio-Maxillofacial, Oncological and Reconstructive Surgery, Jagiellonian University Medical College, Kraków, Poland.

Background: Extractions of third molars constitute about 90% of the scheduled surgical procedures performed by oral surgeons. Wisdom tooth surgery is associated with complications, such as the lingual and inferior alveolar nerve damage, bleeding, tooth/jaw fractures, tooth displacement into the adjacent anatomical spaces, trismus, infections, and other.

Objectives: The aim of the study was to analyze complications after wisdom tooth extraction in patients treated at the Department of Oral Surgery of Jagiellonian University Medical College in Kraków, Poland, in the years 2016-2018. Read More

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Systemic azithromycin as an adjunct to scaling and root planing in patients with stage III/IV periodontitis: 12-month results of a randomized controlled clinical trial.

Clin Oral Investig 2021 Mar 30. Epub 2021 Mar 30.

Department of Oral Medicine and Periodontology, Faculty of Medicine, University of Ljubljana, Hrvatski trg 6, 1000, Ljubljana, Slovenia.

Objectives: To determine whether azithromycin (AZI) as an adjunct to scaling and root planing (SRP), when compared to placebo, decreases the number of sites demonstrating pocket depth (PD) ≥ 5 mm and bleeding on probing (BOP) 12 months post-treatment in stage III/IV periodontitis patients.

Materials And Methods: In a double-blind randomized parallel-arm placebo-controlled trial, 40 stage III/IV periodontitis patients received steps 1 and 2 of periodontal treatment in two sessions within 7 days. Patients then received systemic antibiotic therapy (n = 20; AZI 500 mg/day, 3 days) or placebo (n = 20). Read More

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Organic J-Aggregate Nanodots with Enhanced Light Absorption and Near-Unity Fluorescence Quantum Yield.

Nano Lett 2021 Apr 30;21(7):2840-2847. Epub 2021 Mar 30.

King Abdullah University of Science and Technology, Biological and Environmental Science and Engineering Division, Thuwal 23955-6900, Saudi Arabia.

Development of biocompatible fluorophores with small size, bright fluorescence, and narrow spectrum translate directly into major advances in fluorescence imaging and related techniques. Here, we discover that a small donor-acceptor-donor-type organic molecule consisting of a carbazole (Cz) donor and benzothiazole (BT) acceptor (CzBTCz) assembles into quasi-crystalline J-aggregates upon a formation of ultrasmall nanoparticles. The 3. Read More

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Do composite restorations in primary molar teeth have a higher survival rate following total or selective caries removal?

Evid Based Dent 2021 01;22(1):38-39

Newcastle upon Tyne Hospital NHS Foundation Trust, Newcastle upon Tyne, UK; Senior Lecturer/Honorary Consultant in Paediatric Dentistry, School of Dental Sciences, Faculty of Medical Sciences, Newcastle University, Newcastle upon Tyne, UK.

Study design A double-blind randomised clinical trial, conducted between June 2009 and June 2011, in a paediatric dental department in a Brazilian dental school.Study selection Children aged 3-8 years, in good general health, with deep carious lesions (caries radiographically located in the inner quarter of dentine) affecting either one or two surfaces in primary molars were eligible for inclusion. Teeth were excluded if clinical or radiographic evidence of pulpal inflammation or necrosis or clinical mobility were observed. Read More

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January 2021

Simple new method for labelling of PSMA-11 with Ga in NaHCO.

Appl Radiat Isot 2021 Jun 18;172:109692. Epub 2021 Mar 18.

Department of Radiopharmaceuticals, Nuclear Physic Institute, Czech Academy of Sciences, Řež, Czech Republic. Electronic address:

Background: Prostate specific membrane antigen (PSMA) is a type II membrane protein widely expressed on the surface of prostate cancer cells. One of its functions is to act as a receptor mediating the ligand internalization. This PSMA property is employed in the diagnostics and therapy of prostate cancer. Read More

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Does the Lingual-Based Mucoperiosteal Flap Reduce Postoperative Morbidity Compared With the Buccal-Based Mucoperiosteal Flap After the Surgical Removal of Impacted Third Molars? A Meta-analysis Review.

J Oral Maxillofac Surg 2021 Feb 24. Epub 2021 Feb 24.

Professor, Department of Oral and Maxillofacial Surgery, School and Hospital of Stomatology, Cheeloo College of Medicine, Shandong University & Shandong Key Laboratory of Oral Tissue Regeneration & Shandong Engineering Laboratory for Dental Materials and Oral Tissue Regeneration, Jinan, Shandong, China. Electronic address:

Purpose: The lingual-based mucoperiosteal flap, a novel flap, was unclear about the effects on the prognosis of surgery for impacted mandibular third molars. This study aimed to compare the lingual- and buccal-based mucoperiosteal flaps with respect to postoperative responses and complications.

Materials And Methods: A systematic review with a meta-analysis was designed and the PubMed, Cochrane Library, EMBASE, and Web of Science databases and Google Scholar from January 1, 2000 to April 30, 2020 were searched for randomized clinical trials. Read More

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February 2021

Proximity of the roots of maxillary posterior teeth to the floor of maxillary sinus and cortical plate: A cone-beam computed tomography assessment.

Indian J Dent Res 2020 Nov-Dec;31(6):911-915

Department of Oral Medicine and Radiology, Nair Hospital Dental College, Mumbai, Maharashtra, India.

Introduction: The purpose of the study is to assess the vertical and horizontal relationship between the roots of maxillary posterior teeth and neighboring structures like the floor of the maxillary sinus and cortical plates using cone-beam computed tomography (CBCT).

Method And Materials: 100 CBCT scans of the patients from the Indian population were analyzed. Vertical and horizontal relationship between the roots of maxillary posterior teeth and the floor of the maxillary sinus was divided into 4 types and 3 types, respectively. Read More

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