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https://www.readbyqxmd.com/read/28645095/tooth-coronal-index-and-pulp-tooth-ratio-in-dental-age-estimation-on-digital-panoramic-radiographs-a-comparative-study
#1
Supreet Jain, Ravleen Nagi, Minal Daga, Ashutosh Shandilya, Aastha Shukla, Abhinav Parakh, Afshan Laheji, Rahul Singh
BACKGROUND: Assessment of an age of an individual whether living or dead through teeth is one of the most reliable and simple method to calculate age than skeletal remains especially when they are in poor conditions. OBJECTIVES: The study was carried out with aim of (i) to evaluate reliability of dental age assessment through two different methods for adults i.e. tooth coronal index and pulp/tooth ratio using digital panoramic radiographs and (ii) to compare these methods for their accuracy in age determination...
May 12, 2017: Forensic Science International
https://www.readbyqxmd.com/read/28645068/fracture-roughness-and-phase-transformation-in-cad-cam-milling-and-subsequent-surface-treatments-of-lithium-metasilicate-disilicate-glass-ceramics
#2
Abdur-Rasheed Alao, Richard Stoll, Xiao-Fei Song, John R Abbott, Yu Zhang, Jaafar Abduo, Ling Yin
This paper studied surface fracture, roughness and morphology, phase transformations, and material removal mechanisms of lithium metasilicate/disilicate glass ceramics (LMGC/LDGC) in CAD/CAM-milling and subsequent surface treatments. LMGC (IPS e.max CAD) blocks were milled using a chairside dental CAD/CAM milling unit and then treated in sintering, polishing and glazing processes. X-ray diffraction was performed on all processed surfaces. Scanning electron microscopy (SEM) was applied to analyse surface fracture and morphology...
June 15, 2017: Journal of the Mechanical Behavior of Biomedical Materials
https://www.readbyqxmd.com/read/28643363/oral-cancer-screening-practices-of-canadian-dental-hygienists
#3
A K Clarke, N Kobagi, M N Yoon
PURPOSE: This study investigates whether dental hygienists are routinely conducting oral cancer screenings (OCSs) as per their professional capability and responsibility. Factors that may mediate provision of OCSs, and ability to discuss sensitive topics with patients, are also examined. METHODS: A pretested online questionnaire was sent via national and provincial regulatory bodies to target practicing registered dental hygienists across Canada. Analysis was conducted using statistical software...
June 23, 2017: International Journal of Dental Hygiene
https://www.readbyqxmd.com/read/28640827/the-application-of-multi-baseline-digital-close-range-photogrammetry-in-three-dimensional-imaging-and-measurement-of-dental-casts
#4
Xiaoming Fu, Chun Peng, Zan Li, Shan Liu, Minmin Tan, Jinlin Song
OBJECTIVE: To explore a new technique for reconstructing and measuring three-dimensional (3D) models of orthodontic plaster casts using multi-baseline digital close-range photogrammetry (MBDCRP) with a single-lens reflex camera. STUDY DESIGN: Thirty sets of orthodontic plaster casts that do not exhibit severe horizontal overlap (>2 mm) between any two teeth were recorded by a single-lens reflex camera with 72 pictures taken in different directions. The 3D models of these casts were reconstructed and measured using the open source software MeshLab...
2017: PloS One
https://www.readbyqxmd.com/read/28636642/in-vivo-evaluation-of-inter-operator-reproducibility-of-digital-dental-and-conventional-impression-techniques
#5
Emi Kamimura, Shinpei Tanaka, Masayuki Takaba, Keita Tachi, Kazuyoshi Baba
PURPOSE: The aim of this study was to evaluate and compare the inter-operator reproducibility of three-dimensional (3D) images of teeth captured by a digital impression technique to a conventional impression technique in vivo. MATERIALS AND METHODS: Twelve participants with complete natural dentition were included in this study. A digital impression of the mandibular molars of these participants was made by two operators with different levels of clinical experience, 3 or 16 years, using an intra-oral scanner (Lava COS, 3M ESPE)...
2017: PloS One
https://www.readbyqxmd.com/read/28634492/effectiveness-of-different-preventive-programs-in-cariogram-parameters-of-young-adults-at-high-caries-risk
#6
Said Karabekiroğlu, Nimet Ünlü
OBJECTIVE: To evaluate the effectiveness of different preventive programs in young adults at high caries risk using Cariogram software. METHODS: Sixty-six young adults with high caries risk were evaluated. Dental caries risk for all subjects was determined according to WHO criteria. Subjects were divided into three different preventive groups (control: OH, fluoride varnish: FV, and chlorhexidine varnish: CV). They were followed for 12 weeks (baseline: T0, 1 week: T1, 4 weeks: T2, and 12 weeks: T3)...
2017: International Journal of Dentistry
https://www.readbyqxmd.com/read/28632256/scanning-electron-microscopy-analysis-of-the-adaptation-of-single-unit-screw-retained-computer-aided-design-computer-aided-manufacture-abutments-after-mechanical-cycling
#7
Roberto Adrian Markarian, Deborah Pedroso Galles, Fabiana Mantovani Gomes França
PURPOSE: To measure the microgap between dental implants and custom abutments fabricated using different computer-aided design/computer-aided manufacture (CAD/CAM) methods before and after mechanical cycling. MATERIALS AND METHODS: CAD software (Dental System, 3Shape) was used to design a custom abutment for a single-unit, screw-retained crown compatible with a 4.1-mm external hexagon dental implant. The resulting stereolithography file was sent for manufacturing using four CAD/CAM methods (n = 40): milling and sintering of zirconium dioxide (ZO group), cobalt-chromium (Co-Cr) sintered via selective laser melting (SLM group), fully sintered machined Co-Cr alloy (MM group), and machined and sintered agglutinated Co-Cr alloy powder (AM group)...
June 20, 2017: International Journal of Oral & Maxillofacial Implants
https://www.readbyqxmd.com/read/28630959/a-completely-cad-cam-individual-transmission-device-for-electronic-mandible-movement-registration
#8
Karl-Friedrich Krey, Bernd Kordaß, Sebastian Ruge
The connection of a device for the registration of mandibular movements depends on the coupling of the teeth with a paraocclusal adapter. This is normally done by individualizing a prefabricated metal support, either directly on the patient or in the dental laboratory. The goal was to create an individual paraocclusal adapter by means of additive computer-assisted design/computer-assisted manufacturing (CAD/CAM) procedures, and to test it clinically. Starting from intraoral scans of the maxillary and mandibular teeth, an individual paraocclusal adapter was constructed by combining an adapter piece adapted to the tooth and jaw shape with a prefabricated standard part...
2017: International Journal of Computerized Dentistry
https://www.readbyqxmd.com/read/28630955/chairside-systems-a-current-review
#9
Markus Zaruba, Albert Mehl
Since Cerec (Chairside Economical Restoration of Esthetic Ceramics) was introduced as the first dental chairside computer-aided design/computer-aided manufacturing (CAD/CAM) system in the mid-1980s, this technology has enjoyed growing popularity, particularly in the recent past. There has been a considerable increase in the number of available chairside systems in only the last few years. One of the main reasons for this is that intraoral scanners have become increasingly better, smaller, and faster, while the design software has become more and more user-friendly...
2017: International Journal of Computerized Dentistry
https://www.readbyqxmd.com/read/28626865/positional-changes-of-maxillary-central-incisors-following-orthodontic-treatment-using-single-crown-implants-as-fixed-reference-markers
#10
E B Brahem, B Holm, L Sonnesen, N Worsaae, K Gotfredsen
OBJECTIVES: This follow-up study (1) compares tooth displacement of central incisors in patients with and without pre-implant orthodontic treatment and (2) investigates whether sex, age, or orthodontic retention have an effect on tooth displacement after the insertion of single-crown implants. MATERIALS AND METHODS: Fifty-seven patients - thirty-seven with (test group) and twenty without pre-implant orthodontic treatment (control group) - were rehabilitated with 89 single-crown implants in the upper maxilla...
June 18, 2017: Clinical Oral Implants Research
https://www.readbyqxmd.com/read/28625076/the-one-abutment-one-time-protocol-a-systematic-review-and-meta-analysis
#11
Momen A Atieh, Andrew Tawse-Smith, Nabeel H M Alsabeeha, Sunyoung Ma, Warwick J Duncan
BACKGROUND: The use of definitive abutments (DAs) at the time of implant placement has been introduced to overcome the limitations of dis/reconnection of healing / provisional abutments (PAs). With little and inconsistent information in the literature regarding the effectiveness of using DAs, the aim of this systematic review was to examine marginal bone and soft tissue level changes, technical and biological complications and implant failure associated with the use of DAs and PAs. METHODS: This systematic review was prepared according to the guidelines of Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) statement...
June 19, 2017: Journal of Periodontology
https://www.readbyqxmd.com/read/28623681/soft-tissue-changes-measured-with-three-dimensional-software-provides-new-insights-for-surgical-predictions
#12
Yu-Jen Chang, Antônio C O Ruellas, Marilia S Yatabe, Philip M Westgate, Lucia H S Cevidanes, Sarandeep S Huja
PURPOSE: Although computer-aided craniofacial reconstructions allows for simulation of hard tissue changes, the prediction of the final soft tissue facial changes remains a challenge. The purpose of the present study was to evaluate the 3-dimensional (3D) soft tissue changes in patients undergoing 2-jaw orthognathic surgery. PATIENTS AND METHODS: For the present retrospective cohort study, 40 consecutive patients (11 men and 29 women; mean age 23.5 ± 4.9 years) who had undergone 2-jaw orthognathic surgery were selected...
May 24, 2017: Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28622400/prevalence-of-malocclusion-and-distribution-of-occlusal-characteristics-in-13-to-18-year-old-adolescents-attending-selected-high-schools-in-the-municipality-of-san-juan-pr-2012-2013
#13
Karla Alvarado, Lydia López, Rosana Hanke, Francis Picón, Sona Rivas-Tumanyan
OBJECTIVE: A cross-sectional study was conducted (2012-2013) to evaluate the prevalence of 1) malocclusion and 2) occlusal characteristics in 13- to 18-yearold adolescents in San Juan, Puerto Rico (PR) from selected high schools in the municipality of San Juan. METHODS: The study sample consisted of 155 adolescents. The University of Puerto Rico's IRB approved the study and consent and assent were completed for or by each participant, as applicable. A calibrated dentist performed a single-visit dental evaluation at each school...
June 2017: Puerto Rico Health Sciences Journal
https://www.readbyqxmd.com/read/28602688/quality-control-in-cone-beam-computed-tomography-cbct-efomp-estro-iaea-protocol-summary-report
#14
Hugo de Las Heras Gala, Alberto Torresin, Alexandru Dasu, Osvaldo Rampado, Harry Delis, Irene Hernández Girón, Chrysoula Theodorakou, Jonas Andersson, John Holroyd, Mats Nilsson, Sue Edyvean, Vesna Gershan, Lama Hadid-Beurrier, Christopher Hoog, Gregory Delpon, Ismael Sancho Kolster, Primož Peterlin, Julia Garayoa Roca, Paola Caprile, Costas Zervides
The aim of the guideline presented in this article is to unify the test parameters for image quality evaluation and radiation output in all types of cone-beam computed tomography (CBCT) systems. The applications of CBCT spread over dental and interventional radiology, guided surgery and radiotherapy. The chosen tests provide the means to objectively evaluate the performance and monitor the constancy of the imaging chain. Experience from all involved associations has been collected to achieve a consensus that is rigorous and helpful for the practice...
June 8, 2017: Physica Medica: PM
https://www.readbyqxmd.com/read/28584834/effectiveness-of-a-program-on-evidence-based-dentistry-in-dental-students
#15
Naghmeh Feyzi Najafi, Imaneh Asgari
INTRODUCTION: Evidence-based dentistry (EBD) is an approach to oral healthcare by combining the best scientific evidence and clinical diagnostics, clinical expertise of the dentist, and the patient's treatment needs and preferences. The aim of the present study is to evaluate the effectiveness of an education program on EBD offered in a community-dentistry course in improving knowledge and attitudes of students in this regard. STUDY METHODS: By a quasi-experimental study design, 64 senior dental students of Islamic Azad University of Khorasgan recruited in a controlled trial...
2017: Journal of Education and Health Promotion
https://www.readbyqxmd.com/read/28584783/association-between-nutritional-status-and-early-childhood-caries-in-indian-children
#16
H V N Sai Krishna, E Manaswini, Vijay Y Kumar, Pavani Bellamkonda, A S Kalyana Bhargava, Ramvilas Reddy Jaidupally
AIMS AND OBJECTIVES: To assess the body mass index (BMI) status and to correlate between nutritional status and early childhood caries among 3-6-year-old children in Vikarabad, Telangana, India. MATERIALS AND METHODS: A cross-sectional study was conducted among 350 children attending the outpatient department of Pedodontia in Sri Sai College of Dental Surgery, Vikarabad. Caries experience was recorded using dmft index (WHO 1997); various anthropometric measures, such as weight, BMI, and height, were recorded as per the standard guidelines...
May 2017: Journal of International Society of Preventive & Community Dentistry
https://www.readbyqxmd.com/read/28584782/quantification-and-measurement-of-changes-in-anxiety-level-in-preschool-children-and-their-mothers-through-multiple-visit-dental-treatment
#17
Anandamoy Bagchi, Banibrata Lahiri, Md Jalaluddin, Gunjan Kumar, Sanjib Das, Kanika Singh Dhull
AIM: The aims of the present study were to quantify anxiety and find the level of anxiety in the very 1(st) day of dental treatment and the pattern of change in the following visits and to find possible impact of maternal anxiety during dental treatment of their wards. MATERIALS AND METHODS: The study was conducted on 297 children aged 3-6 years visiting the Department of Pedodontics and Preventive Dentistry of Dr. R. Ahmed Dental College and Hospital for treatment...
May 2017: Journal of International Society of Preventive & Community Dentistry
https://www.readbyqxmd.com/read/28584777/dental-and-skeletal-age-estimations-in-lebanese-children-a-retrospective-cross-sectional-study
#18
Antoine Saadé, Pascal Baron, Ziad Noujeim, Dany Azar
AIMS AND OBJECTIVES: Assessing dental and bone ages is frequently required in a wide range of fields such as odontology, forensic science, as well as orthopedics. The aim of this study was to evaluate applicability of two methods of bone age assessment and two methods of dental age (DA) assessment for Lebanese children. MATERIALS AND METHODS: Skeletal age (SA) of 260 orthodontic patients (124 males, 136 females divided into four groups each) was consecutively assessed using Greulich and Pyle and Fishman's SMI methods...
May 2017: Journal of International Society of Preventive & Community Dentistry
https://www.readbyqxmd.com/read/28584514/systemic-assessment-of-patients-undergoing-dental-implant-surgeries-a-trans-and-post-operative-analysis
#19
Sanjay Byakodi, Sachin Kumar, Rajesh Kumar Reddy, Vipin Kumar, Shipra Sepolia, Shivangi Gupta, Harkanwal Preet Singh
BACKGROUND: Procedure-related and patient-related factors influence the prognosis of dental implants to a major extent. Hence, we aimed to evaluate and analyze various systemic factors in patients receiving dental implants. MATERIALS AND METHODS: Fifty-one patients were included in the study, in which a total of 110 dental implants were placed. Complete examination of the subjects was done before and after placement of dental implants. Implant surgery was planned, and osseointegrated dental implants were placed in the subjects...
January 2017: Nigerian Journal of Surgery: Official Publication of the Nigerian Surgical Research Society
https://www.readbyqxmd.com/read/28577366/accuracy-of-four-intraoral-scanners-in-oral-implantology-a-comparative-in-vitro-study
#20
Mario Imburgia, Silvia Logozzo, Uli Hauschild, Giovanni Veronesi, Carlo Mangano, Francesco Guido Mangano
BACKGROUND: Until now, only a few studies have compared the ability of different intraoral scanners (IOS) to capture high-quality impressions in patients with dental implants. Hence, the aim of this study was to compare the trueness and precision of four IOS in a partially edentulous model (PEM) with three implants and in a fully edentulous model (FEM) with six implants. METHODS: Two gypsum models were prepared with respectively three and six implant analogues, and polyether-ether-ketone cylinders screwed on...
June 2, 2017: BMC Oral Health
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