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Dental errors

J M Colazo, J R Hu, K M Dahir, J H Simmons
Hypophosphatasia (HPP) typically manifests with fractures, tooth loss, and muscle pain. Although mental health diagnoses and neurological symptoms have not been previously well documented in HPP, they occur commonly. The recognition of non-traditional symptoms may improve patient satisfaction, preempt costly evaluation and misdiagnosis, and lead to further treatment options. INTRODUCTION: Hypophosphatasia (HPP) is an inborn error of metabolism due to deficiency of tissue non-specific alkaline phosphatase (TNSALP)...
September 13, 2018: Osteoporosis International
Hichem Nemsi, Malek Ben Daya, Nidhal Haj Salem, Fatma Masmoudi, Inès Bouanène, Fethi Maatouk, Abir Aissaoui, Ali Chadly
This study aims to evaluate and compare the applicability of three dental methods for age estimation, including Demirjian's four teeth, Willems I, and Willems II methods in a sample of Tunisian children. Panoramic radiographs of 500 children (241 females, 259 males) aged between 5 and 15 years were examined. The mean absolute error (MAE) was performed to assess the accuracy of age estimation. Independent samples t-test was employed to compare the differences, the chronological age minus dental age (CA-DA), between sexes for the three methods...
August 22, 2018: Forensic Science International
Minah Kim, Byungyeon Kim, Byungjun Park, Minsuk Lee, Youngjae Won, Choul-Young Kim, Seungrag Lee
In this study, we developed a digital shade-matching device for dental color determination using the support vector machine (SVM) algorithm. Shade-matching was performed using shade tabs. For the hardware, the typically used intraoral camera was modified to apply the cross-polarization scheme and block the light from outside, which can lead to shade-matching errors. For reliable experiments, a precise robot arm with ±0.1 mm position repeatability and a specially designed jig to fix the position of the VITA 3D-master (3D) shade tabs were used...
September 12, 2018: Sensors
José Luis Calvo Guirado, Aldo Fabian Lucero-Sánchez, Ana Boquete Castro, Marcus Abboud, Sergio Gehrke, Manuel Fernández Dominguez, Rafael Arcesio Delgado Ruiz
The authors would like to correct following typing and two images errors [...].
September 4, 2018: Materials
Mari Metsäniitty, Janna Waltimo-Sirén, Helena Ranta, Steffen Fieuws, Patrick Thevissen
AIM: The aim of the current study was to retrospectively collect dental panoramic radiographs from Somali children living in Finland, to use the radiographic data to develop a new age estimation model based on the model established by Willems et al. (J Forensic Sci 46(4):893-895, 2001), and to compare the age prediction performances of the Willems et al. model (WM) and the newly developed model. MATERIAL AND METHODS: Dental panoramic radiographs from 808 healthy Somalis born in Finland were selected...
September 1, 2018: International Journal of Legal Medicine
Justyna Grudziąż-Sękowska, Dorota Olczak-Kowalczyk, Małgorzata Zadurska
BACKGROUND: Masticatory system and speech sound disorders concur, have the same causes and similar consequences - both increase the risk of dental and periodontal diseases. OBJECTIVES: The study was conducted to establish the correlation between functional disorders of the masticatory system and speech sound disorders. MATERIAL AND METHODS: Three hundred patients aged 7-10 years were examined to detect functional disorders of the masticatory system and speech sound disorders...
April 2018: Dental and medical problems
José Manuel Calderón-Montaño, Julio José Jiménez-Alonso, Emilio Guillén-Mancina, Estefanía Burgos-Morón, Miguel López-Lázaro
OBJECTIVES: To provide mechanistic evidence for the epidemiological link between long-term use of alcohol-containing mouthwashes and oral cancer. MATERIAL AND METHODS: Human epithelial keratinocytes were exposed for 30 s to concentrations of ethanol commonly present in mouthwashes. After a recovery period, cell viability was assessed with the MTT assay. RESULTS: A marked cytotoxic effect was observed for ethanol concentrations of 20% and above...
August 28, 2018: Clinical Oral Investigations
Gianluca Gambarini, Lucila Piasecki, Priscilla Ropini, Gabriele Miccoli, Dario Di Nardo, Luca Testarelli
Objectives: In the present study, confluent canals in the mandibular first molar's mesial root were investigated in an Italian population by means of cone-beam computed tomography (CBCT). Materials and Methods: A total of 200 molars, selected from the CBCT examinations of 130 patients who required this type of X-ray study as part of their dental treatment, were examined. The evaluated parameters were number of canals, root canal system configuration, presence of apical confluences, distance between confluences and apical foramina, which canal had a higher degree of curvature, and symmetry between left and right elements in the same individual...
July 2018: European Journal of Dentistry
Eun-Jeong Bae, Il-Do Jeong, Woong-Chul Kim, Ji-Hwan Kim
PURPOSE: The purpose of this study was to compare the cutting method and the lamination method to investigate whether the CAD data of the proposed inlay shape are machined correctly. MATERIALS AND METHODS: The Mesial-Occlusal shape of the inlay was modeled by changing the stereolithography (STL). Each group used SLS (metal powder) or SLA (photocurable resin) in the additive method, and wax or zirconia in the subtractive method (n=10 per group, total n=40). Three-dimensional (3D) analysis program (Geomagic Control X inspection software; 3D systems) was used for the alignment and analysis...
August 2018: Journal of Advanced Prosthodontics
X Ju, D S Brennan, E Parker, S Chrisopoulos, L Jamieson
OBJECTIVE: To determine the psychometric properties of both the long- and short-form versions of the Health Literacy in Dentistry (HeLD) instrument in a large sample of the Australian adult population. METHODS: Data were from a subset of the National Dental Telephone Interview Survey 2013. Both the long (HeLD-29) and short-form (HeLD-14) were utilised, each of which comprises items from 7 conceptual domains: access, understanding, support, utilization, economic barriers, receptivity and communication...
August 30, 2018: Community Dental Health
Hugo F V Cardoso, Julia Meyers, Helen M Liversidge
This study provides an update on a quantitative method for immature age estimation based on postnatal deciduous mandibular tooth length. Two known sex and age skeletal collections from Western Europe were sampled (n = 97). Linear regression models for age estimated were calculated for each individual tooth, each sex, and sex combined sample using classical calibration. Prediction errors, residuals, and percentage of individuals whose real age fell within the 95% prediction interval were calculated. The teeth which develop earlier in life, the incisors and the first molar, showed the greatest precision, while the canine showed the least...
August 20, 2018: Journal of Forensic Sciences
Naoya Oshima, Tomohiro Shiraishi, Tsukasa Kawauchi, Jun Oba, Daisuke Sato, Masahide Fujiki, Mine Ozaki, Akihiko Takushima, Kiyonori Harii
In 1986, Altemir first reported the use of submental intubation to avoid tracheotomy in patients with panfacial and midfacial fractures for whom intermaxillary fixation is necessary, but orotracheal and nasotracheal intubations are not recommended. This novel technique allowed intraoperative access to perform dental occlusion and reconstruction of the nasal pyramid in patients with skull base fractures. Herein, we describe a refined technique based on Altemir's original procedure. Seven male patients with panfacial fractures underwent submental intubation using our refined technique...
August 11, 2018: Journal of Craniofacial Surgery
Anirudh Koul, Swatantra Agarwal, Romil Singhal, Siddhi Tripathi
Background: Complaints with complete dentures is a common and expected phenomenon. However the type and character of complaint varies between population and is influenced by the socio economic condition, prevalent dental awareness etc. This study attempts to find the most common complaints with complete dentures, their causes and also presents a classification of the same. Method: A cross-sectional analytical study was conducted by performing a survey on a sample of population over an 18 month period utilizing a customized questionnaire...
July 2018: Journal of Indian Prosthodontic Society
Beatriz Tarazona, Rut Lucas-Dominguez, Vanessa Paredes-Gallardo, Adolfo Alonso-Arroyo, Antonio Vidal-Infer
OBJECTIVES: To identify and analyze the 100 most-cited articles in orthodontics indexed in the Web of Science Category of "Dental, Oral Surgery and Medicine" from 1946 to 2016. MATERIALS AND METHODS: On hundred articles were identified in a search of the database of the ISI Web of Science and Journal Citation Reports, applying the truncated search term "orthodon*." Records were manually refined and normalized to unify terms and to remove typographical, transcription, and/or indexing errors...
August 13, 2018: Angle Orthodontist
Akiko Kumagai, Guy Willems, Ademir Franco, Patrick Thevissen
Improved age estimates may result from combining different age predictors. This study aimed to validate age estimation performances combining the radiographic development of teeth, cervical vertebrae, hand and wrist bones, skull, and mandible. The sampled consisted of 256 individuals aged between 4 and 20 years. Bayes' rule with a multivariate continuation ratio model was applied for the distribution of the dental scores. The additional age information of the skeletal variables was assessed extending the dental model separately and combining the variables...
August 11, 2018: International Journal of Legal Medicine
Camila S Sampaio, Pablo J Atria, Ronaldo Hirata, Gilbert Jorquera
STATEMENT OF PROBLEM: Color matching in restorative and prosthetic dentistry is important for the success of dental treatments, although communication with the dental laboratory remains subjective, and studies of the performance of objective communication methods are lacking. PURPOSE: The purpose of this study was to evaluate color differences (ΔE) and compare color luminosity (L*) values among different types of digital photography equipment used to document tooth color, with and without a gray reference card, and to determine whether the gray card could be used to standardize color assessment in dental photography...
August 7, 2018: Journal of Prosthetic Dentistry
Karin M Andersson, Christina Vallhagen Dahlgren, Johan Reizenstein, Yang Cao, Anders Ahnesjö, Per Thunberg
PURPOSE: To evaluate two commercial CT metal artifact reduction (MAR) algorithms for use in proton treatment planning in the head and neck (H&N) area. METHODS: An anthropomorphic head phantom with removable metallic implants (dental fillings or neck implant) was CT-scanned to evaluate the O-MAR (Philips) and the iMAR (Siemens) algorithms. Reference images were acquired without any metallic implants in place. Water Equivalent Thickness (WET) was calculated for different path directions and compared between image sets...
August 4, 2018: Medical Physics
Flavia Strani, Antonio Profico, Giorgio Manzi, Diana Pushkina, Pasquale Raia, Raffaele Sardella, Daniel DeMiguel
Mastication of dietary items with different mechanical properties leaves distinctive microscopic marks on the surface of tooth enamel. The inspection of such marks (dental microwear analysis) is informative about the dietary habitus in fossil as well as in modern species. Dental microwear analysis relies on the morphology, abundance, direction, and distribution of these microscopic marks. We present a new freely available software implementation, MicroWeaR , that, compared to traditional dental microwear tools, allows more rapid, observer error free, and inexpensive quantification and classification of all the microscopic marks (also including for the first time different subtypes of scars)...
July 2018: Ecology and Evolution
Jihad Dagher, Charles Sfeir, Ahmad Abdallah, Zeina Majzoub
AIM: The aim of the present study was to evaluate sterilization practices and effectiveness in the Lebanese private dental sector and identify potential factors contributing to sterilization failure. MATERIALS AND METHODS: A 13-item questionnaire consisting of four demographic/professional questions and nine questions related to sterilization practices along with self-contained biologic indicators (SCBIs) were delivered to a representative sample of Lebanese private offices...
July 1, 2018: Journal of Contemporary Dental Practice
Hanifah Rahmi-Fajrin, Sartika Puspita, Slamet Riyadi, Erma Sofiani
Background: Evaluation of dental treatment is performed by observing dental periapical radiography to obtain information of filling's condition, pulp tissue, remain dentin thickness, periodontal ligament, and lamina dura. Nevertheless, the radiographic image used often has low quality due to the level of x-ray radiation made low purposely in order to prevent health problem and limited tools capability. This low quality of the radiographic image, for examples, low image contrast, less brightness, and noise existence cause periapical radiography evaluation hard to be performed...
July 2018: Journal of Clinical and Experimental Dentistry
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