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https://www.readbyqxmd.com/read/28789668/two-years-retrospective-study-of-maxillofacial-trauma-at-a-tertiary-center-in-north-west-ethiopia
#1
Amare Teshome, Getaneh Andualem, Rediet Tsegie, Samuel Seifu
BACKGROUND: Maxillofacial injury poses a challenge to oral and maxillofacial surgeons working in developing countries with limited resource and human power. The present study aimed to determine the etiology, pattern, and management of maxillofacial trauma in Gondar university of Gondar hospital. METHODS: A retrospective descriptive study design was used. Medical registration retrieving of patients with maxillofacial trauma visited dental center of University of Gondar Hospital from September 2013 to August 2015 was done...
August 8, 2017: BMC Research Notes
https://www.readbyqxmd.com/read/28782099/knowledge-perceptions-and-clinical-application-of-the-shortened-dental-arch-concept-among-malaysian-government-dentists
#2
Siti Kamilah Mohd Kasim, Ishak Abdul Razak, Zamros Yuzadi Mohd Yusof
AIM: To assess the knowledge and perceptions of Malaysian government dentists regarding the shortened dental arch (SDA) concept and its application in clinical practice. BACKGROUND: The SDA concept refers to a specific type of dentition with intact anterior teeth and a reduction in posterior occlusal pairs. Dentists' knowledge and perceptions of the SDA concept can influence its application in clinical practice. METHODS: A self-administered questionnaire on the SDA concept was distributed to 326 government dentists in the states of Selangor and Kuala Lumpur, Malaysia...
August 7, 2017: International Dental Journal
https://www.readbyqxmd.com/read/28771955/mineral-features-of-connective-dental-hard-tissues-in-hypoplastic-amelogenesis-imperfecta
#3
Rym Kammoun, Catherine Behets, Lamia Mansour, Sonia Ghoul-Mazgar
To explore the mineral features of dentin and cementum in hypoplastic AI teeth MATERIALS AND METHODS: Forty four (44) teeth cleaned and free of caries were used: 20 control and 24 affected by hypoplastic amelogenesis imperfecta. Thirty-two teeth were studied by pQCT, cut in sections and analysed under microradiography, polarized light microscopy and confocal Raman spectroscopy. Eight teeth were observed under scanning electron microscope. Four teeth were used for an X-ray diffraction. The mineral density data were analysed statistically with the Mann-Whitney U test, using GraphPad InStat Software RESULTS: Both coronal and radicular dentin were less mineralized in AI teeth when compared to control (respectively 6...
August 3, 2017: Oral Diseases
https://www.readbyqxmd.com/read/28771886/alternative-method-to-evaluate-the-adaptation-of-implant-supported-multi-unit-prosthetic-frameworks
#4
Ying Zhou, Yong Li, Xiao Ma, Yiqing Huang, Jiawei Wang
PURPOSE: Various methods to evaluate the adaptation of dental prostheses are available; however, only a few of these methods assess the adaptation of the framework as a whole. This study aimed to propose an alternative method to evaluate the adaptation of implant-supported multi-unit Co-Cr alloy frameworks. MATERIALS AND METHODS: A four-unit framework supported by two implants was designed using a computer. Six dots with a diameter of 0.2 mm were designed randomly using 3Shape software on the abutment surface of the framework for measurement...
August 3, 2017: Journal of Prosthodontics: Official Journal of the American College of Prosthodontists
https://www.readbyqxmd.com/read/28768230/thermal-stress-analysis-of-ceramic-laminate-veneer-restorations-with-different-incisal-preparations-using-micro-computed-tomography-based-3d-finite-element-models
#5
Alper Tunga Celebi, Esra Icer, Meltem Mert Eren, Cengiz Baykasoglu, Ata Mugan, Esra Yildiz
Main objective of this study is to investigate the thermal behavior of ceramic laminate veneer restorations of the maxillary central incisor with different incisal preparations such as butt joint and palatinal chamfer using finite element method. In addition, it is also aimed to understand the effect of different thermal loads which simulates hot and cold liquid imbibing in the mouth. Three-dimensional solid models of the sound tooth and prepared veneer restorations were obtained using micro-computed tomography images...
July 27, 2017: Journal of the Mechanical Behavior of Biomedical Materials
https://www.readbyqxmd.com/read/28764269/analysis-of-clinical-indicators-of-quality-in-patients-with-endotracheal-intubation
#6
Sulochana Dash, Sreelatha Balasubramanian
INTRODUCTION: Quality and safety in anaesthesia is usually monitored by analysis of perioperative mortality-morbidity and are influenced by anaesthetic and non-anaesthetic factors. AIM: This study was conducted to analyse the incidence of clinical indicators of quality in endotracheally intubated patients undergoing general abdominal surgeries and obstetric and gynaecological procedures under general anaesthesia and to determine contributing factors for the same...
June 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28760285/effects-of-unilateral-premolar-extraction-treatment-on-the-dental-arch-forms-of-class-ii-subdivision-malocclusions
#7
Ginu Dahiya, Ahmed I Masoud, Grace Viana, Ales Obrez, Budi Kusnoto, Carla A Evans
INTRODUCTION: A retrospective study evaluating posttreatment symmetry in dental arch form and midlines was carried out in Class II subdivision patients treated with unilateral and bilateral maxillary premolar extractions. METHODS: Using Geomagic (version 14; Geomagic, Research Triangle Park, NC) and MATLAB (version 8.4; MathWorks, Natick, Mass) software, best-fit curves expressed as quartic polynomials were generated for 13 Class II subdivisions treated with unilateral extractions and 20 treated with bilateral maxillary premolar extractions...
August 2017: American Journal of Orthodontics and Dentofacial Orthopedics
https://www.readbyqxmd.com/read/28757938/postextraction-computer-guided-implant-surgery-in-partially-edentate-patients-with-metal-restorations-a-case-report
#8
A Pinto, C Raffone
OBJECTIVES: The aim of the present study was to describe a postextraction, computer-guided protocol for implant-prosthetic rehabilitations in partially edentate patients with metal restorations. METHODS: A 60-year-old man with a loose FDP (fixed dental prosthesis) in the first quadrant was selected for a postextraction computer guided implantology according with the 2-piece radiographic template protocol. A two components radiographic template was produced, with the teeth setup portion based on the wax-up...
January 2017: Oral & Implantology
https://www.readbyqxmd.com/read/28754080/diagnostic-accuracy-of-phosphor-plate-systems-and-conventional-radiography-in-the-detection-of-simulated-internal-root-resorption
#9
Karla de Faria Vasconcelos, Karla Rovaris, Eduarda Helena Leandro Nascimento, Matheus Lima Oliveira, Débora de Melo Távora, Frab Norberto Bóscolo
OBJECTIVE: To evaluate the performance of conventional radiography and photostimulable phosphor (PSP) plate in the detection of simulated internal root resorption (IRR) lesions in early stages. MATERIALS AND METHODS: Twenty single-rooted teeth were X-rayed before and after having a simulated IRR early lesion. Three imaging systems were used: Kodak InSight dental film and two PSPs digital systems, Digora Optime and VistaScan. The digital images were displayed on a 20...
July 28, 2017: Acta Odontologica Scandinavica
https://www.readbyqxmd.com/read/28753925/pilot-study-using-a-chitosan-hydroxyapatite-implant-for-guided-alveolar-bone-growth-in-patients-with-chronic-periodontitis
#10
Fabiola Vaca-Cornejo, Héctor Macías Reyes, Sergio H Dueñas Jiménez, Ricardo A Llamas Velázquez, Judith M Dueñas Jiménez
Periodontitis is an infectious and inflammatory disease associated with significant loss of alveolar crest and soft tissue attached to the teeth. Chitosan and hydroxyapatite are biomaterials used for bone tissue repair because of their biodegradability and biocompatibility in nature. The present study evaluated the effects of chitosan (CH) in combination with hydroxyapatite (HAP) to promote alveolar bone growth. A chitosan implant mixed with hydroxyapatite was implanted into the affected area of 9 patients suffering chronic periodontitis...
July 19, 2017: Journal of Functional Biomaterials
https://www.readbyqxmd.com/read/28749837/occlusion-guided-double-barreled-fibular-osteoseptocutaneous-free-flap-for-refined-mandibular-reconstruction-aided-by-virtual-surgical-planning
#11
Xingzhou Qu, Mingyi Wang, Liqun Xu, Jiannan Liu, Shizhu Bai, Chenping Zhang
BACKGROUND: There were many articles about double-barreled fibular flap for mandibular reconstruction. The upper layer bone was suit for implant placement as a new alveolar. The lower layer was necessary for contour. But the accurate relationship between the 2 layers bone was rarely reported. OBJECTIVES: The purpose of this study was twofold: to evaluate the feasibility of the novel design of the double-barreled fibular flap from virtual surgery to actual result; to evaluate the accuracy and results of occlusion-guided double-barreled fibular free flap in mandible reconstruction...
July 26, 2017: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/28747886/in-vitro-thermal-maps-to-characterize-human-dental-enamel-and-dentin
#12
Paula Lancaster, David Brettle, Fiona Carmichael, Val Clerehugh
The crown of a human tooth has an outer layer of highly-mineralized tissue called enamel, beneath which is dentin, a less-mineralized tissue which forms the bulk of the tooth-crown and root. The composition and structure of enamel and dentin are different, resulting in different thermal properties. This gives an opportunity to characterize enamel and dentin from their thermal properties and to visually present the findings as a thermal map. The thermal properties of demineralized enamel and dentin may also be sufficiently different from sound tissue to be seen on a thermal map, underpinning future thermal assessment of caries...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28746489/three-dimensional-evaluation-of-mandibular-anterior-dental-crowding-in-digital-dental-casts
#13
Luciana Quintanilha Pires Fernandes, Livia Kelly Ferraz Nunes, Luana Santos Alves, Felipe de Assis Carvalho Ribeiro, Jonas Capelli
Introduction: Digital dental models provide a more accurate and comprehensive assessment of orthodontic cases. Although this technique is quite promising, there are few three-dimensional measurements methods described in the literature. Objective: The aim of this study was to propose a method for assessing the degree of mandibular anterior dental crowding in the three planes of space, using digital dental models. Methods: Thirty dental casts were selected and scanned by Maestro 3D Dental Scanner and imported by Geomagic Qualify 2013 software...
May 2017: Dental Press Journal of Orthodontics
https://www.readbyqxmd.com/read/28746320/c-reactive-protein-in-periodontitis-and-its-comparison-with-body-mass-index-and-smoking-behaviour
#14
S Gupta, S Pradhan, S Kc, S Shakya, M Giri
INTRODUCTION: Chronic periodontitis is an infectious disease resulting in inflammation within the supporting tissues of the teeth, progressive attachment loss, and bone loss. In addition to declining oral health, there is always low grade infection present in periodontitis. Studies show increased levels of systemic biomarkers in periodontal disease such as CRP, which is considered a key-marker of CVD. Research has also shown positive association between BMI and smoking with periodontitis and CRP...
April 2017: JNMA; Journal of the Nepal Medical Association
https://www.readbyqxmd.com/read/28740969/an-in-vitro-study-comparing-the-accuracy-of-full-arch-casts-digitized-with-desktop-scanners
#15
Roxana Nowak, Christian Wesemann, Jan Robben, Jonas Muallah, Axel Bumann
OBJECTIVE: The purpose of this study was to evaluate the accuracy of full-arch scans using 11 different cast scanners. METHOD AND MATERIALS: Dental arch length (AL), intermolar width (IMW), and intercanine width (ICW) of the reference plaster casts were measured using a coordinate measuring machine (Zeiss O-Inspect 422). The master cast was subsequently scanned 37 times using 11 desktop scanners (3Shape R500, 3Shape R700, 3Shape R1000, 3Shape R2000, Medianetx grande, Medianetx colori, DentaCore CS ULTRA, Dentaurum OrthoX, Maestro 3D, Imetric IScan D104i, GC Aadva Lab Scan)...
July 20, 2017: Quintessence International
https://www.readbyqxmd.com/read/28729791/correlation-between-salivary-cortisol-levels-and-dental-anxiety-in-children-of-smokers-and-nonsmokers
#16
S Pavani Reddy, M Ghanashyam Prasad, A Naga RadhaKrishna, Kaniti Saujanya, N V K Raviteja, B Deepthi
OBJECTIVES: The present study was undertaken to evaluate salivary cortisol levels in children of smokers and nonsmokers and thereby establishing the relationship between cortisol levels in response to anxiety in children based on their father's habit of smoking. MATERIALS AND METHODS: The study population aged between 8 and 10 years includes two groups. Group 1 is comprised 20 children of cigarette smokers and Group 2 is comprised 20 children of nonsmokers. The passive drooling technique was used to collect unstimulated saliva from the children using a sterile container...
April 2017: European Journal of Dentistry
https://www.readbyqxmd.com/read/28724930/assessment-of-different-techniques-for-3d-superimposition-of-serial-digital-maxillary-dental-casts-on-palatal-structures
#17
Georgios Vasilakos, Roman Schilling, Demetrios Halazonetis, Nikolaos Gkantidis
Serial 3-dimensional dental model superimposition provides a risk-free, detailed evaluation of morphological alterations on a patient's mouth. Here, we evaluated accuracy and precision of five palatal areas, used for superimposition of maxillary 3D digital dental casts. Sixteen pre- and post-orthodontic treatment dental casts of growing patients (median time lapse: 15.1 months) were superimposed on each palatal area using the iterative closest point algorithm. Area A (medial 2/3 of the third rugae and a small area dorsal to them) was considered the gold standard, due to high anatomical stability...
July 19, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28721987/evaluation-of-occlusal-groove-patterns-of-mandibular-first-and-second-molars-in-an-indian-population-a-forensic-anthropological-study
#18
Rashmi Gs Phulari, Rajendrasinh Rathore, Mili D Takvani, Shivani Jain
BACKGROUND: The study of dental morphological characteristics is important in anthropological research as it can provide information on the phylogenetic relationship between species, as well as variations and diversities within a population. AIMS AND OBJECTIVES: To determine the prevalence of six types of mandibular second molars in Gujarat state and the results can be used in both forensic anthropological researches and clinical aspects of dental sciences. MATERIALS AND METHODS: This descriptive investigation was undertaken among 1000 students (13-25 years old) in high schools and dental institutes of Gujarat state...
May 2017: Indian Journal of Dental Research: Official Publication of Indian Society for Dental Research
https://www.readbyqxmd.com/read/28720339/in%C3%A2-vitro-fit-of-cad-cam-complete-arch-screw-retained-titanium-and-zirconia-implant-prostheses-fabricated-on-4-implants
#19
Hadi Al-Meraikhi, Burak Yilmaz, Edwin McGlumphy, William Brantley, William M Johnston
STATEMENT OF PROBLEM: Computer-aided designed and computer-aided manufactured (CAD-CAM) titanium and zirconia implant-supported fixed implant prostheses on 4 implants have become popular. The precision and accuracy of their interface fit has not been widely researched. PURPOSE: The purpose of this in vitro study was to compare the marginal fit of zirconia and titanium implant-supported screw-retained CAD-CAM complete fixed dental prostheses (CFDP) fit with a standardized cast simulating the all-on-4 implant distribution...
July 15, 2017: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/28713908/comparison-of-gene-expression-profiles-between-dental-pulp-and-periodontal-ligament-tissues-in-humans
#20
Ai-Xiu Gong, Jing-Han Zhang, Jing Li, Jun Wu, Lin Wang, Deng-Shun Miao
There are anatomical and functional differences between human dental pulp (DP) and periodontal ligament (PDL). However, the molecular biological differences and function of these tissues are poorly understood. In the present study, we employed a cDNA microarray array to screen for differentially expressed genes (DEGs) between human DP and PDL tissues, and used the online software WebGestalt to perform the functional analysis of the DEGs. In addition, the STRING database and KEGG pathway analysis were applied for interaction network and pathway analysis of the DEGs...
September 2017: International Journal of Molecular Medicine
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