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https://www.readbyqxmd.com/read/29678488/medicolegal-considerations-involving-iatrogenic-lingual-nerve-damage
#1
REVIEW
Roberto Pippi, Andrea Spota, Marcello Santoro
The aim of this review is to improve risk management strategies through analysis of the anatomic, semeiotic, and medicolegal aspects that characterize iatrogenic lingual nerve damage (LND) and its legal consequences in the case of legal proceedings for a claim for compensation. In dental practice, LND can be caused by local or general anesthesia or by mechanical, chemical, or thermal mechanisms. A certain postoperative identification of LND etiopathogenesis is often very challenging because it can be difficult to show at what time the damage occurred and which mechanism actually caused it...
March 27, 2018: Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/29663272/fiducial-based-fusion-of-3d-dental-models-with-magnetic-resonance-imaging
#2
Amir H Abdi, Alan G Hannam, Sidney Fels
PURPOSE: Magnetic resonance imaging (MRI) is widely used in study of maxillofacial structures. While MRI is the modality of choice for soft tissues, it fails to capture hard tissues such as bone and teeth. Virtual dental models, acquired by optical 3D scanners, are becoming more accessible for dental practice and are starting to replace the conventional dental impressions. The goal of this research is to fuse the high-resolution 3D dental models with MRI to enhance the value of imaging for applications where detailed analysis of maxillofacial structures are needed such as patient examination, surgical planning, and modeling...
April 16, 2018: International Journal of Computer Assisted Radiology and Surgery
https://www.readbyqxmd.com/read/29657499/age-estimation-in-indian-adults-by-the-coronal-pulp-cavity-index
#3
Vaishali Vasant Koranne, Amit A Mhapuskar, Swati P Marathe, Sameer A Joshi, Rashmi S Saddiwal, Shams Ul Nisa
Background: Age estimation from tooth coronal index (TCI) using intraoral periapical radiographs by paralleling technique based on a reduction in the size of the dental pulp cavity with advancing age as a result of secondary dentin deposition. Aim and Objectives: The aim of this study is to estimate age for Indian adults using radiographs of mandibular first molar and second premolar teeth using coronal pulp cavity index. Materials and Methods: The study material consists of 400 intraoral periapical radiographs of mandibular second premolar and mandibular first molar from enrolled participants of either gender in the age group of 20-60 years...
September 2017: Journal of Forensic Dental Sciences
https://www.readbyqxmd.com/read/29657494/stereomicroscopic-study-on-unsectioned-extracted-teeth
#4
V Keerthi Narayan, V K Varsha, H C Girish, Sanjay Murgod
Introduction: Age has been considered as a reliable marker for establishing the identity of a person in the field of forensic medicine. Teeth are useful skeletal indicators of age at death since it can survive for decades. Nondestructive methods ensure the evident preservation of dental hard tissues that reflect age changes from the cradle to the grave. Therefore, an attempt was made for estimating the age using the nondestructive method. Aims and Objectives: The aim of this study to assess whether physiological changes of the teeth allow possible correlation for accurate age estimation and to establish a graduation standard by microscopic observation for a better age correlation...
September 2017: Journal of Forensic Dental Sciences
https://www.readbyqxmd.com/read/29606650/clinical-dental-faculty-members-perceptions-of-diagnostic-errors-and-how-to-avoid-them
#5
Cathy Nikdel, Kian Nikdel, Ana Ibarra-Noriega, Elsbeth Kalenderian, Muhammad F Walji
Diagnostic errors are increasingly recognized as a source of preventable harm in medicine, yet little is known about their occurrence in dentistry. The aim of this study was to gain a deeper understanding of clinical dental faculty members' perceptions of diagnostic errors, types of errors that may occur, and possible contributing factors. The authors conducted semi-structured interviews with ten domain experts at one U.S. dental school in May-August 2016 about their perceptions of diagnostic errors and their causes...
April 2018: Journal of Dental Education
https://www.readbyqxmd.com/read/29603558/flip-avoiding-interpolating-surface-registration-for-skull-reconstruction
#6
Shudong Xie, Wee Kheng Leow, Hanjing Lee, Thiam Chye Lim
Skull reconstruction is an important and challenging task in craniofacial surgery planning, forensic investigation and anthropological studies. Existing methods typically reconstruct approximating surfaces that regard corresponding points on the target skull as soft constraints, thus incurring non-zero error even for non-defective parts and high overall reconstruction error. This paper proposes a novel geometric reconstruction method that non-rigidly registers an interpolating reference surface that regards corresponding target points as hard constraints, thus achieving low reconstruction error...
March 30, 2018: International Journal of Medical Robotics + Computer Assisted Surgery: MRCAS
https://www.readbyqxmd.com/read/29576649/error-analysis-how-precise-is-fused-deposition-modeling-in-fabrication-of-bone-models-in-comparison-to-the-parent-bones
#7
M V Reddy, Krishnakiran Eachempati, A V Gurava Reddy, Aakash Mugalur
Background: Rapid prototyping (RP) is used widely in dental and faciomaxillary surgery with anecdotal uses in orthopedics. The purview of RP in orthopedics is vast. However, there is no error analysis reported in the literature on bone models generated using office-based RP. This study evaluates the accuracy of fused deposition modeling (FDM) using standard tessellation language (STL) files and errors generated during the fabrication of bone models. Materials and Methods: Nine dry bones were selected and were computed tomography (CT) scanned...
March 2018: Indian Journal of Orthopaedics
https://www.readbyqxmd.com/read/29572134/replacement-of-the-distorted-dentition-of-the-cone-beam-computed-tomography-scans-for-orthognathic-surgery-planning
#8
Turki Almutairi, Kurt Naudi, Neil Nairn, Xiangyang Ju, John Whitters, Aashraf Ayoub
PURPOSE: Cone-beam computed tomography (CBCT) does not record dental morphology accurately because of the scattering produced by metallic restorations and the reported magnification. The aim of this study was the development and evaluation of a new method for the replacement of the distorted dentition of CBCT scans with a 3-dimensional (3D) dental image captured by a digital intraoral camera. MATERIALS AND METHODS: Six dried skulls with orthodontic brackets fixed on the teeth were used in this study...
February 28, 2018: Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/29534126/accuracy-of-navigation-guided-dental-implant-placement-with-screw-versus-hand-template-fixation-in-the-edentulous-mandible
#9
Philipp Kauffmann, Anna Rau, Wilfried Engelke, Markus Troeltzsch, Phillip Brockmeyer, Lauer-Saridakis Dagmar, Robert Cordesmeyer
PURPOSE: Preoperative planning of the implant position as part of a coordinated prosthetic and surgical concept is becoming increasingly important regarding function and esthetics. The aim of this study was to investigate the transmission accuracy of template fixation during surgery in edentulous arches with hand fixation in comparison to intermediary screw fixation. MATERIALS AND METHODS: Preoperatively, 10 implant positions were planned using computed tomography (CT) with the system med3D for implant placement in four mandible models of the Goettingen study model, using a prosthetic diagnostic template...
March 2018: International Journal of Oral & Maxillofacial Implants
https://www.readbyqxmd.com/read/29533495/dental-shade-matching-and-value-discernment-abilities-of-first-year-dental-students
#10
Terence A Imbery, Dan Tran, Mary A Baechle, Jennifer L Hankle, Charles Janus
PURPOSE: To determine if Farnsworth-Munsell 100 Hue Test, Perceptual Ability Test, gender, age, ethnicity, and time predict dental shade matching and value discernment in first-year dental students. MATERIALS AND METHODS: Farnsworth-Munsell 100 Hue Test was administered to 95 first-year-dental students beneath a Judge II booth (color temperature of 6500°K, and color rendering index of 90). Students also arranged 16 masked shade tabs from a Vita Classic shade guide by value (lightest to darkest) and matched together 16 pairs of masked shade tabs from two Vita Classic shade guides...
March 13, 2018: Journal of Prosthodontics: Official Journal of the American College of Prosthodontists
https://www.readbyqxmd.com/read/29519970/accuracy-of-the-demirjian-willems-and-cameriere-methods-of-estimating-dental-age-on-turkish-children
#11
B K Apaydin, F Yasar
Background and Aim: Age estimation plays a significant role in forensic science, archeology, pediatric endocrinology and clinical dentistry. Tooth development is a reliable pathway for age estimation, especially in children. The aim of this study was to evaluate the accuracy of the Demirjian method (DM), Willems method (WM) and Cameriere method (CM). Materials and Methods: This study included panaramic radiographs of 330 individuals (165 girls, 165 boys) aged between 5 and 15...
March 2018: Nigerian Journal of Clinical Practice
https://www.readbyqxmd.com/read/29502221/new-equations-for-age-estimation-using-four-permanent-mandibular-teeth-in-thai-children-and-adolescents
#12
P Duangto, A Janhom, S Prasitwattanaseree, A Iamaroon
The purposes of this study were to generate new age estimation equations using two four-teeth methods and to test the accuracy of the resulting equations in comparison with Demirjian and Goldstein four-teeth methods in a Thai population. A sample of 720 digital panoramic radiographs of Thai individuals (360 males and 360 females), aged between 7 and 15 years was randomly selected and assessed for age estimation. The new equations were developed using quadratic regression analysis. The results showed the Thai population-specific equations had a strong relationship between the dental maturity score and the chronological age in both sexes (r = 0...
March 3, 2018: International Journal of Legal Medicine
https://www.readbyqxmd.com/read/29498157/rubric-system-for-evaluation-of-crown-preparation-performed-by-dental-students
#13
S R Habib
OBJECTIVE: This study aimed to investigate the use of an analytic rubric system for the evaluation of all-ceramic crown preparation on the right maxillary central incisor performed by the dental students. MATERIALS AND METHODS: Seventy-two-third-year students and 8 faculty members from prosthodontics participated in this double-blind study. The students prepared an ivorine tooth # 11 for all-ceramic crown. The students were given clear instructions regarding the all-ceramic crown preparation and informed about the criteria for the assessment of the preparation...
March 1, 2018: European Journal of Dental Education: Official Journal of the Association for Dental Education in Europe
https://www.readbyqxmd.com/read/29496811/dental-students-interpretations-of-digital-panoramic-radiographs-on-completely-edentate-patients
#14
Richard J Kratz, Caroline T Nguyen, Joanne N Walton, David MacDonald
The ability of dental students to interpret digital panoramic radiographs (PANs) of edentulous patients has not been documented. The aim of this retrospective study was to compare the ability of second-year (D2) dental students with that of third- and fourth-year (D3-D4) dental students to interpret and identify positional errors in digital PANs obtained from patients with complete edentulism. A total of 169 digital PANs from edentulous patients were assessed by D2 (n=84) and D3-D4 (n=85) dental students at one Canadian dental school...
March 2018: Journal of Dental Education
https://www.readbyqxmd.com/read/29487834/root-canal-volume-change-and-transportation-by-vortex-blue-protaper-next-and-protaper-universal-in-curved-root-canals
#15
Hyun-Jin Park, Min-Seock Seo, Young-Mi Moon
Objectives: The aim of this study was to compare root canal volume change and canal transportation by Vortex Blue (VB; Dentsply Tulsa Dental Specialties), ProTaper Next (PTN; Dentsply Maillefer), and ProTaper Universal (PTU; Dentsply Maillefer) nickel-titanium rotary files in curved root canals. Materials and Methods: Thirty canals with 20°-45° of curvature from extracted human molars were used. Root canal instrumentation was performed with VB, PTN, and PTU files up to #30...
February 2018: Restorative Dentistry & Endodontics
https://www.readbyqxmd.com/read/29480849/patient-safety-culture-perceptions-in-the-college-of-dentistry
#16
Fahad Saleh Al Sweleh, Abdullah Mohammed Al Saedan, Omar Abdullah Al Dayel
A positive safety culture is essential to patient safety because it improves quality of care. The aim of this study was to assess staff and student perceptions of the patient safety culture in the clinics of the College of Dentistry at King Saud University in Saudi Arabia.A cross-sectional study was conducted in the College of Dentistry at King Saud University in Saudi Arabia. It included 4th and 5th year students, interns, general practitioners, and dental assistants. The data were collected by using paper-based questionnaire of modified version of the Agency for Healthcare Research and Quality Hospital Survey on Patient Safety Culture...
January 2018: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29478934/human-evaluation-in-association-to-the-mathematical-analysis-of-arch-forms-two-dimensional-study
#17
Nurwahidah Zabidin, Alizae Marny Mohamed, Azami Zaharim, Murshida Marizan Nor, Tanti Irawati Rosli
OBJECTIVES: To evaluate the relationship between human evaluation of the dental-arch form, to complete a mathematical analysis via two different methods in quantifying the arch form, and to establish agreement with the fourth-order polynomial equation. MATERIALS AND METHODS: This study included 64 sets of digitised maxilla and mandible dental casts obtained from a sample of dental arch with normal occlusion. For human evaluation, a convenient sample of orthodontic practitioners ranked the photo images of dental cast from the most tapered to the less tapered (square)...
February 22, 2018: International Orthodontics
https://www.readbyqxmd.com/read/29435519/analysis-of-the-causes-of-dental-implant-fracture-a-retrospective-clinical-study
#18
Biser Stoichkov, Dimitar Kirov
OBJECTIVE: Fracture of osseointegrated dental implants is the most severe mechanical complication. The aim of the present study was to analyze possible causative factors for implant body fracture. METHOD AND MATERIALS: One hundred and one patients with 218 fitted implants and a follow-up period of 3 to 10 years were studied. Factors associated with biomechanical and physiologic overloading such as parafunctional activity (eg, bruxism), occlusion, and cantilevers, and factors related to the planning of the dental prosthesis, available bone volume, implant area, implant diameter, number of implants, and their inclination were tracked...
February 12, 2018: Quintessence International
https://www.readbyqxmd.com/read/29429839/comparison-of-digital-surface-displacements-of-maxillary-dentures-based-on-noninvasive-anatomic-landmarks
#19
Nicholas G Norvell, Tom V Korioth, David R Cagna, Antheunis Versluis
STATEMENT OF PROBLEM: Artificial markers called fiducials are commonly used to orient digitized surfaces for analysis. However, when these markers are tangible and placed in the region of interest, they may alter surface topography and influence data analysis. PURPOSE: The purpose of this in vitro study was to apply a modified digital surface fitting method based on anatomic landmarks to evaluate denture accuracy and to use 2 different denture processing techniques to evaluate the method...
February 8, 2018: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/29427920/accuracy-of-the-demirjian-and-willems-methods-of-age-estimation-in-a-black-southern-african-population
#20
Temitope A Esan, Lynne A Schepartz
The accuracies of the original Demirjian, modified Demirjian and Willems dental age estimation methods were compared for a Black Southern African population to determine their usefulness for forensic and anthropological purposes. Data were collected using a community-based prospective study design. Panoramic radiographs of seven left mandibular teeth from 540 children aged 5-15.99 years were scored using the three methods. Obtained estimates were compared to the chronological ages and mean absolute errors were calculated...
February 1, 2018: Legal Medicine
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