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https://www.readbyqxmd.com/read/28708981/a-comparison-of-the-validity-of-the-demirjian-willems-nolla-and-h%C3%A3-%C3%A3-vikko-methods-in-determination-of-chronological-age-of-5-15-year-old-indian-children
#1
Sapna Hegde, Akash Patodia, Uma Dixit
BACKGROUND: Demirjian's method has been the most popular and extensively tested radiographic method of age estimation. More recently, Willems' method has been reported to be a better predictor of age. Nolla's and Häävikko's methods have been used to a lesser extent. Very few studies have compared all four methods in non-Indian and Indian populations. Most Indian research is limited by inadequate sample sizes, age structures and grouping and different approaches to statistical analysis...
July 5, 2017: Journal of Forensic and Legal Medicine
https://www.readbyqxmd.com/read/28697210/reproducibility-of-a-new-computerized-planimetric-method-for-the-measurement-and-assessment-of-removable-dental-prostheses-plaque
#2
Ahmad Al Jaghsi, Torsten Mundt, Reiner Biffar
PURPOSE: The aim of this study was to evaluate the reliability and agreement of a new computerized planimetric method (CPM) for the measurement and assessment of plaque on all types of removable dental prostheses (RDPs). MATERIALS AND METHODS: From a database containing 780 images taken following a standardized method for 65 RDPs, 55 images were randomly selected for image analysis. Adobe Photoshop software was used according to standard operating procedure (SOP) by one main examiner two times in different sessions, and one time by three additional examiners...
July 2017: International Journal of Prosthodontics
https://www.readbyqxmd.com/read/28684836/improving-patient-safety-through-a-clinical-audit-spiral-prevention-of-wrong-tooth-extraction-in-orthodontics
#3
H Anwar, D Waring
Introduction With an increasing demand to improve patient safety within the NHS, it is important to ensure that measures are undertaken to continually improve patient care. Wrong site surgery has been defined as a 'never event'. This article highlights the importance of preventing wrong tooth extraction within orthodontics through an audit spiral over five years investigating the accuracy and clarity of orthodontic extraction letters at the University Dental Hospital of Manchester.Aims To examine compliance with the standards for accuracy and clarity of extraction letters and the incidence of wrong tooth extractions, and to increase awareness of the errors that can occur with extraction letters and of the current guidelines...
July 7, 2017: British Dental Journal
https://www.readbyqxmd.com/read/28683764/a-survey-of-retracted-articles-in-dentistry
#4
Túlio Eduardo Nogueira, Andréia Souza Gonçalves, Cláudio Rodrigues Leles, Aline Carvalho Batista, Luciane Rezende Costa
BACKGROUND: Publication retraction is a mechanism to preserve the scientific literature against publications that contain seriously flawed or erroneous data, redundant publication, plagiarism, unethical research, and other features that compromise the integrity of science. An increase in the occurrence of retractions in recent years has been reported. Nevertheless, there is scarce information on this topic concerning publications in dentistry and related specialties. Thus, this study aimed to investigate retracted papers published in dental journals...
July 6, 2017: BMC Research Notes
https://www.readbyqxmd.com/read/28681247/impact-of-manual-control-point-selection-accuracy-on-automated-surface-matching-of-digital-dental-models
#5
Kathrin Becker, Benedict Wilmes, Chantal Grandjean, Dieter Drescher
OBJECTIVES: Treatment outcomes are frequently evaluated based on the superimposition of digital dental models. However, errors from surface matching may distort these findings. The aims of this study were (i) to develop a simulation unit to mimic point set registrations and (ii) to evaluate the impact and clinical relevance of manual landmark selection errors on registration accuracy. MATERIAL AND METHODS: Ten randomly selected dental casts were digitized using a 3D laser scanner, and were loaded by an in-house developed simulation unit (MATLAB R2014a)...
July 5, 2017: Clinical Oral Investigations
https://www.readbyqxmd.com/read/28678645/evaluation-of-complications-of-root-canal-treatment-performed-by-undergraduate-dental-students
#6
Mothanna K AlRahabi
This study evaluated the technical quality of root canal treatment (RCT) and detected iatrogenic errors in an undergraduate dental clinic at the College of Dentistry, Taibah University, Saudi Arabia. Dental records of 280 patients who received RCT between 2013 and 2016 undertaken by dental students were investigated by retrospective chart review. Root canal obturation was evaluated on the basis of the length of obturation being ≤2 mm from the radiographic apex, with uniform radiodensity and good adaptation to root canal walls...
December 2017: Libyan Journal of Medicine
https://www.readbyqxmd.com/read/28669170/knowledge-about-human-papillomavirus-and-cervical-cancer-predictors-of-hpv-vaccination-among-dental-students
#7
Kingston Rajiah, Mari Kannan Maharajan, Kelly Sze Fang Num, Raymond Chee How Koh
Background: The objective of this study is to determine the influence of dental students’ knowledge and attitude regarding human papillomavirus infection of cervical cancer on willingness to pay for vaccination. Basic research design: A convenience sampling method was used. The minimal sample size of 136 was calculated using the Raosoft calculator with a 5 % margin of error and 95% confidence level. Participants: The study population were all final year dental students from the School of Dentistry. Methods: A self-administered questionnaire was used to measure knowledge levels and attitudes regarding human papillomavirus vaccination...
June 25, 2017: Asian Pacific Journal of Cancer Prevention: APJCP
https://www.readbyqxmd.com/read/28659050/inter-arch-digital-model-vs-manual-cast-measurements-accuracy-and-reliability
#8
Heikki Kiviahde, Lea Bukovac, Päivi Jussila, Paula Pesonen, Kirsi Sipilä, Aune Raustia, Pertti Pirttiniemi
OBJECTIVES: The purpose of this study was to evaluate the accuracy and reliability of inter-arch measurements using digital dental models and conventional dental casts. METHODS: Thirty sets of dental casts with permanent dentition were examined. Manual measurements were done with a digital caliper directly on the dental casts, and digital measurements were made on 3D models by two independent examiners. Intra-class correlation coefficients (ICC), a paired sample t-test or Wilcoxon signed-rank test, and Bland-Altman plots were used to evaluate intra- and inter-examiner error and to determine the accuracy and reliability of the measurements...
June 28, 2017: Cranio: the Journal of Craniomandibular Practice
https://www.readbyqxmd.com/read/28656952/-the-clinical-and-expert-evaluation-of-the-unfavourable-consequences-of-the-provision-of-the-dental-implantation-treatment
#9
A A Gusarov, T G Popova, V A Fetisov, E Yu Kuraeva, E A Shoniya
The clinical and expert evaluation of the unfavourable consequences of the provision of the inadequate dental implantation treatment has demonstrated the ever increasing number of justified complaints and civilian lawsuits instituted annually in connection with the infringements of health associated with the poor quality of the medical care provided to the patients. The authors present the results of commission forensic medical expertise performed on account of the civilian lawsuits instituted by a 74 year-old patient K...
2017: Sudebno-meditsinskaia Ekspertiza
https://www.readbyqxmd.com/read/28656672/drilling-into-the-functional-significance-of-stereopsis-the-impact-of-stereoscopic-information-on-surgical-performance
#10
Loulwa M Al-Saud, Faisal Mushtaq, Isra'a Mirghani, Ahmed Balkhoyor, Andrew Keeling, Michael Manogue, Mark A Mon-Williams
PURPOSE: One suggested advantage of human binocular vision is the facilitation of sophisticated motor control behaviours via stereopsis - but little empirical evidence exists to support this suggestion. We examined the functional significance of stereopsis by exploring whether stereopsis is used to perform a highly skilled real-world motor task essential for the occupational practice of dentistry. METHODS: We used a high fidelity virtual reality simulator to study how dentists' performance is affected by the removal of horizontal retinal image disparities under direct and indirect (mirror) observation...
July 2017: Ophthalmic & Physiological Optics: the Journal of the British College of Ophthalmic Opticians (Optometrists)
https://www.readbyqxmd.com/read/28601188/the-quality-of-fixed-prosthodontic-impressions-an-assessment-of-crown-and-bridge-impressions-received-at-commercial-laboratories
#11
Clayton T Rau, Vilhelm G Olafsson, Alex J Delgado, André V Ritter, Terry E Donovan
BACKGROUND: The authors evaluated and quantified clinically detectable errors commonly seen in impressions sent to commercial laboratories and determined possible relationships between finish line errors and other factors involved. METHODS: The authors visited 3 large and 1 small commercial dental laboratories over a 12-month period. Three calibrated examiners evaluated the impressions. The examiners evaluated all impressions for errors by using ×2.5 magnification loupes under ambient room lighting without the aid of additional illumination...
June 7, 2017: Journal of the American Dental Association
https://www.readbyqxmd.com/read/28599689/aspartic-acid-racemization-with-correlation-to-age-aforensic-perspective
#12
Qudsia Hassan, Allah Rakha, M Zahid Bashir
OBJECTIVE: To estimate age through aspartic acid racemization of human dentin for forensic analysis, and to calculate the margin of error between chronological age and estimated age by racemization method. STUDY DESIGN: Cross-sectional comparative study. PLACE AND DURATION OF STUDY: Dental Outpatients' Department, Ziauddin Hospital, Karachi, from 2011 to 2014. METHODOLOGY: Patients from dental orthodontics department were selected...
May 2017: Journal of the College of Physicians and Surgeons—Pakistan: JCPSP
https://www.readbyqxmd.com/read/28598860/translational-motion-correction-algorithm-for-truncated-cone-beam-ct-using-opposite-projections
#13
Jawook Gu, Woong Bae, Jong Chul Ye
BACKGROUND: Cone-beam computed tomography (CBCT) is widely used in various medical imaging applications, including dental examinations. Dental CBCT images often suffer from motion artifacts caused by involuntary rigid motion of patients. However, earlier motion compensation studies are not applicable for dental CBCT systems using truncated detectors. OBJECTIVE: This study proposes a novel motion correction algorithm that can be applied for truncated dental CBCT images...
June 3, 2017: Journal of X-ray Science and Technology
https://www.readbyqxmd.com/read/28581062/dental-evidence-for-wild-tuber-processing-among-titicaca-basin-foragers-7000-ybp
#14
James T Watson, Randall Haas
OBJECTIVES: The objective of this work is to characterize dental wear in a skeletal sample dating to the Middle/Late Archaic period transition (8,000-6,700 cal. B.P.) from the Lake Titicaca Basin, Peru to better define subsistence behaviors of foragers prior to incipient sedentism and food production. MATERIALS AND METHODS: The dental sample consists of 251 teeth from 11 individuals recovered from the site of Soro Mik'aya Patjxa (SMP), the earliest securely dated burial assemblage in the Lake Titicaca Basin and the only burial assemblage in the region from an unequivocal forager context...
June 5, 2017: American Journal of Physical Anthropology
https://www.readbyqxmd.com/read/28555157/accuracy-evaluation-of-a-stereolithographic-surgical-template-for-dental-implant-insertion-using-3d-superimposition-protocol
#15
Corina Marilena Cristache, Silviu Gurbanescu
THE AIM: of this study was to evaluate the accuracy of a stereolithographic template, with sleeve structure incorporated into the design, for computer-guided dental implant insertion in partially edentulous patients. MATERIALS AND METHODS: Sixty-five implants were placed in twenty-five consecutive patients with a stereolithographic surgical template. After surgery, digital impression was taken and 3D inaccuracy of implants position at entry point, apex, and angle deviation was measured using an inspection tool software...
2017: International Journal of Dentistry
https://www.readbyqxmd.com/read/28530318/-severe-infantile-hypophosphatasia
#16
Evgenia Gurevich, Daniel Landau
Hypophosphatasia is the inborn error of metabolism that is characterized by low serum alkaline-phosphatase activity, due to loss-of-function mutations within the gene for tissuenonspecific isoenzyme of alkaline phosphatase [TNSALP]. The manifestations of hypophosphatasia range from neonatal death with almost no skeletal mineralization to dental problems in adults without any bone symptoms. There are no case reports of infantile hypophosphatasia in Israel. The existence of enzymatic replacement treatment for this disease makes it important to diagnose this problem as soon as possible...
January 2017: Harefuah
https://www.readbyqxmd.com/read/28526091/a-pre-therapeutic-coating-for-medical-devices-that-prevents-the-attachment-of-candida-albicans
#17
Diego Vargas-Blanco, Aung Lynn, Jonah Rosch, Rony Noreldin, Anthony Salerni, Christopher Lambert, Reeta P Rao
BACKGROUND: Hospital acquired fungal infections are defined as "never events"-medical errors that should never have happened. Systemic Candida albicans infections results in 30-50% mortality rates. Typically, adhesion to abiotic medical devices and implants initiates such infections. Efficient adhesion initiates formation of aggressive biofilms that are difficult to treat. Therefore, inhibitors of adhesion are important for drug development and likely to have a broad spectrum efficacy against many fungal pathogens...
May 19, 2017: Annals of Clinical Microbiology and Antimicrobials
https://www.readbyqxmd.com/read/28509869/experimental-approach-for-the-uncertainty-assessment-of-3d-complex-geometry-dimensional-measurements-using-computed-tomography-at-the-mm-and-sub-mm-scales
#18
Roberto Jiménez, Marta Torralba, José A Yagüe-Fabra, Sinué Ontiveros, Guido Tosello
The dimensional verification of miniaturized components with 3D complex geometries is particularly challenging. Computed Tomography (CT) can represent a suitable alternative solution to micro metrology tools based on optical and tactile techniques. However, the establishment of CT systems' traceability when measuring 3D complex geometries is still an open issue. In this work, an alternative method for the measurement uncertainty assessment of 3D complex geometries by using CT is presented. The method is based on the micro-CT system Maximum Permissible Error (MPE) estimation, determined experimentally by using several calibrated reference artefacts...
May 16, 2017: Sensors
https://www.readbyqxmd.com/read/28504354/new-methodology-to-reconstruct-in-2-d-the-cuspal-enamel-of-modern-human-lower-molars
#19
Mario Modesto-Mata, Cecilia García-Campos, Laura Martín-Francés, Marina Martínez de Pinillos, Rebeca García-González, Yuliet Quintino, Antoni Canals, Marina Lozano, M Christopher Dean, María Martinón-Torres, José María Bermúdez de Castro
OBJECTIVES: In the last years different methodologies have been developed to reconstruct worn teeth. In this article, we propose a new 2-D methodology to reconstruct the worn enamel of lower molars. Our main goals are to reconstruct molars with a high level of accuracy when measuring relevant histological variables and to validate the methodology calculating the errors associated with the measurements. METHODS: This methodology is based on polynomial regression equations, and has been validated using two different dental variables: cuspal enamel thickness and crown height of the protoconid...
May 15, 2017: American Journal of Physical Anthropology
https://www.readbyqxmd.com/read/28501863/psychometric-properties-of-the-revised-illness-perception-questionnaire-for-oral-health
#20
Fredy H Villalobos-Galvis, Ana C Mafla, William F Burbano-Trujillo, Alexandra A Sanchez-Figueroa
AIMS: The aim of this study was to test the hypothesis that, for patients with dental caries, the Spanish version of the Revised Illness Perception Questionnaire for Oral Health (IPQ-R-OH) has 7 dimensions, including personal and treatment control, timeline-acute/chronic and timeline-cyclical, illness coherence, consequences, and emotional representations. METHODS: A Spanish adaptation of the IPQ-R, with a self-reported 38-item scale, was developed. Exploratory and confirmatory factor analyses were conducted using data from 520 patients with dental caries attending the Dental Clinic at Universidad Cooperativa de Colombia, Pasto, Colombia...
2017: Caries Research
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