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1.
BMJ Case Rep ; 14(1)2021 Jan 11.
Artículo en Inglés | MEDLINE | ID: mdl-33431460

RESUMEN

Oculodentodigital dysplasia (ODDD) is a rare congenital disorder characterised by developmental abnormalities of the eye, dentition and digits of the hands and feet, with neurological symptoms reported in 30% of individuals. Dental anomalies associated with ODDD include enamel hypoplasia and subsequent caries, microdontia, missing teeth, amelogenesis imperfecta, pulp stones and delayed tooth development. Here, we describe the comprehensive dental management of a 3-year-old girl who presented with rapid deterioration of the primary dentition due to generalised enamel hypomineralisation. Conservative, comprehensive restorative management was performed under general anaesthesia. Within 6 months, further breakdown of the remaining unrestored enamel was noted. This case documents the challenges of conservative management in dental anomalies that are not well documented due to the extreme rarity of the disorder.


Asunto(s)
Anomalías Craneofaciales/complicaciones , Atención Dental para Niños/métodos , Hipoplasia del Esmalte Dental/terapia , Anomalías del Ojo/complicaciones , Deformidades Congénitas del Pie/complicaciones , Sindactilia/complicaciones , Anomalías Dentarias/complicaciones , Anestesia General , Preescolar , Anomalías Craneofaciales/diagnóstico , Anomalías Craneofaciales/genética , Anomalías Craneofaciales/terapia , Coronas , Atención Dental para Niños/efectos adversos , Atención Dental para Niños/instrumentación , Esmalte Dental/diagnóstico por imagen , Hipoplasia del Esmalte Dental/diagnóstico , Hipoplasia del Esmalte Dental/genética , Anomalías del Ojo/diagnóstico , Anomalías del Ojo/genética , Anomalías del Ojo/terapia , Femenino , Deformidades Congénitas del Pie/diagnóstico , Deformidades Congénitas del Pie/genética , Deformidades Congénitas del Pie/terapia , Humanos , Dolor Asociado a Procedimientos Médicos/etiología , Dolor Asociado a Procedimientos Médicos/prevención & control , Linaje , Selladores de Fosas y Fisuras , Radiografía Dental , Sindactilia/diagnóstico , Sindactilia/genética , Sindactilia/terapia , Anomalías Dentarias/diagnóstico , Anomalías Dentarias/genética , Anomalías Dentarias/terapia , Diente Primario/diagnóstico por imagen
2.
Dentomaxillofac Radiol ; 50(1): 20219002, 2021 Jan 01.
Artículo en Inglés | MEDLINE | ID: mdl-33305981

RESUMEN

As Dentomaxillofacial Radiology celebrates 50 years of publication, some former editors who have helped the journal reach this milestone reminisce on their time at the helm of the journal.


Asunto(s)
Radiografía Dental , Radiología , Edición , Radiografía
3.
Braz. dent. sci ; 24(1): 1-9, 2021. tab
Artículo en Inglés | LILACS, BBO - Odontología | ID: biblio-1145369

RESUMEN

Objective: The aim of the study was to assessment of technical quality of 9562 endodontic cases treated by heterogeneous groups with different clinical experience. Material and methods: This retrospective study reviewed the dental records of 8590 patients (9562 endodontic cases and 13203 root canals including 3340 retreatment root canals) treated by fourth-year undergraduates, fifth-year undergraduates, endodontic program students, and endodontic specialists between December 2017 and December 2018 at the Department of Endodontics of Necmettin Erbakan University Faculty of Dentistry in Konya. The length, density, and taper of root fillings, the acceptable technical quality of the root filling criteria, and the presence of procedural errors, were recorded. Chi-square tests with a significance level at p=0.05 were used for statistical analysis. Results: Acceptable root fillings were found in 71.5% of endodontic cases. Clinical experience showed statistical differences in the root filling quality among fourth-year undergraduates, fifth-year undergraduates, endodontic program students, and specialists (52, 63.1, 77.9 and 86.5% respectively). Fractured instruments and missed canals were noted in 9.8% and 0.57% of cases treated by endodontic program students significantly more than the other clinical experiences. No statistical differences were found among the clinical experiences in other procedural errors. No statistically significant differences were found between age range and gender in additional root canals. Statistically significant differences were observed between the number of root canal retreatments in terms of age range and gender. Conclusions: Clinical experience affects the technical quality of root canal treatments. Fractured instruments and missed canals, especially by endodontic program students, should be given more attention. (AU)


Objetivo: O objetivo do estudo foi avaliar a qualidade técnica de 9562 casos endodônticos tratados por grupos heterogêneos com diferentes experiências clínicas. Material e métodos:Este estudo retrospectivo revisou os registros dentários de 8590 pacientes (9562 casos endodônticos e 13203 canais radiculares, incluindo 3340 canais radiculares de retratamento) tratados por graduandos do quarto ano, graduandos do quinto ano, estudantes do programa endodôntico e especialistas em endodontia, entre dezembro de 2017 e dezembro de 2018 no Departamento de Endodontia da Faculdade de Odontologia da Universidade Necmettin Erbakan em Konya. O comprimento, a densidade e a conicidade dos preenchimentos das raízes, a qualidade técnica aceitável dos critérios de preenchimento das raízes e a presença de erros processuais foram registrados. Os testes de qui-quadrado com nível de significância de p = 0,05 foram utilizados para análise estatística. Resultados:O preenchimento radicular aceitável foi encontrado em 71,5% dos casos endodônticos. A experiência clínica mostrou diferenças estatísticas na qualidade do preenchimento das raízes entre os alunos do quarto ano, do quinto ano, estudantes do programa endodôntico e especialistas (52, 63,1, 77,9 e 86,5%, respectivamente). Instrumentos fraturados e canais perdidos foram observados em 9,8% e 0,57% dos casos tratados pelos estudantes do programa endodôntico significativamente mais do que nas outras experiências clínicas. Não foram encontradas diferenças estatísticas entre as experiências clínicas em outros erros processuais. Não foram encontradas diferenças estatisticamente significantes entre faixa etária e sexo em canais radiculares adicionais. Foram observadas diferenças estatisticamente significantes entre o número de retratamentos do canal radicular em termos de faixa etária e sexo. Conclusões: A experiência clínica afeta a qualidade técnica dos tratamentos do canal radicular. Instrumentos fraturados e canais perdidos, especialmente por estudantes do programa endodôntico, devem receber mais atenção (AU)


Asunto(s)
Humanos , Estudiantes de Odontología , Radiografía Dental , Cavidad Pulpar , Educación
4.
J Can Dent Assoc ; 86: k16, 2020 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-33326370

RESUMEN

OBJECTIVE: To gain a better understanding of the extent to which rectangular collimation is being used in private practice and the barriers to adoption by practitioners. METHODS: Licensed dentists in private practice were asked to answer a survey composed of 17 multiple-choice questions and 1 open-ended question regarding demographics, radiation safety, image receptor type, intraoral imaging techniques and use of rectangular collimation. RESULTS: Among all participants (n = 82), 86.6% used digital systems (n = 71) and 13.4% conventional film (n = 11). Most (74.0%, n = 60) were aware of the benefits of using rectangular collimation, with 5.5% reporting not knowing of the existence of this device (n = 3). Only 12.9% of the dentists reported using rectangular collimation routinely (n = 10). The youngest and oldest age groups had the lowest compliance rates, 5.6% and 0%, respectively. CONCLUSION: Although 74.0%, (n = 60) of private practitioners were aware of the benefits of using rectangular collimation to reduce radiation dose, only 12.2% (n = 10) used it routinely for intraoral imaging. Barriers to implementing rectangular collimation in private practice settings included challenges in training support staff and fear of an increase in the occurrence of technical errors that would result in re-exposure of patients.


Asunto(s)
Diagnóstico por Imagen , Práctica Privada , Humanos , Dosis de Radiación , Radiografía Dental , Encuestas y Cuestionarios
5.
Int. j. med. surg. sci. (Print) ; 7(4): 1-8, dic. 2020. ilus
Artículo en Español | LILACS | ID: biblio-1151808

RESUMEN

La reabsorción radicular interna es infrecuente en dentición permanente, la mayoría de los casos se observan en dientes anteriores, su etiología no está del todo clara, es por esto que el tratamiento para este tipo de lesiones es la endodoncia. Se presenta el caso de una paciente sexo femenino, 38 años de edad, sin antecedes médicos relevantes, derivada para evaluación de diente 2.2 con mal pronóstico. El diagnóstico es de absceso apical agudo, pieza con reabsorción interna y lesión apical. Se realiza endodoncia con cementos biocerámicos y aplicación de láser terapéutico de 808 nm de longitud de onda, con parámetros específicos para acelerar la reparación del tejido óseo. La terapia de fotobiomodulación con láser de baja potencia parece ser útil como coadyuvante en el proceso de reparación ósea en piezas con lesión apical y reabsorción interna tratadas endodónticamente.


Internal root resorption is infrequent in permanent dentition, most cases are observed in anterior teeth, its etiology is not entirely clear, which is why the treatment for this type of lesion is endodontics.We present the case of a 38-year-old female patient, without relevant medical history, referred for evaluation of tooth 2.2 with a poor prognosis. Diagnosis Acute apical abscess, tooth with internal resorption and apical lesion. Endodontics are performed with bioceramic cements and the application of a 808 nm wavelength therapeutic laser, with specific parameters to accelerate bone tissue repair.Low-level laser photobiomodulation therapy appears to be useful as an adjunct in the bone repair process in endodontically treated teeth with apical lesion and internal resorption.


Asunto(s)
Humanos , Femenino , Adulto , Resorción Radicular/radioterapia , Terapia por Luz de Baja Intensidad , Endodoncia , Radiografía Dental
6.
Med. oral patol. oral cir. bucal (Internet) ; 25(6): e834-e837, nov. 2020. tab, ilus
Artículo en Inglés | IBECS | ID: ibc-197194

RESUMEN

A series of 20 consecutive patients with an osteosarcoma of the jaws has been evaluated with regard to possible professional diagnostic delay. When set at an arbitrarily chosen period beyond three months, professional delay occurred in 15 patients, the mean being 21 months and the median 11 months. In five of the 15 patients a wrong diagnosis has been rendered on the biopsy specimen, being fibrous dysplasia (2x), osteoma (2x) and, in case of palatomaxillary swelling, pleomorphic adenoma (1x). In the other ten patients the initial clinicoradiographic features were misleading and apparently not indicative of a malignancy, except for one patient in whom a distinct widening of the periodontal ligament, as expressed on a periapical film, has been overlooked or not properly interpreted. It has not been possible to assess the possible influence of the delayed diagnosis on the prognosis


No disponible


Asunto(s)
Humanos , Masculino , Femenino , Preescolar , Niño , Adolescente , Adulto Joven , Adulto , Persona de Mediana Edad , Anciano , Osteosarcoma/diagnóstico , Neoplasias Maxilomandibulares/diagnóstico , Diagnóstico Tardío , Radiografía Dental , Osteosarcoma/patología , Neoplasias Maxilomandibulares/patología , Biopsia , Pronóstico , Factores de Tiempo
7.
J Vet Sci ; 21(5): e75, 2020 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-33016021

RESUMEN

BACKGROUND: Dental diseases are common in dogs and cats, and accurate measurements of dentoalveolar structure are important for planning of treatment. The information that the comparison computed tomography (CT) with dental radiography (DTR) is not yet reported in veterinary medicine. OBJECTIVES: The purpose of this study was to compare the DTR with CT of dentoalveolar structures in healthy dogs and cats, and to evaluate the CT images of 2 different slice thicknesses (0.5 and 1.0 mm). METHODS: We included 6 dogs (2 Maltese and 1 Spitz, Beagle, Pomeranian, mixed, 1 to 8 years, 4 castrated males, and 2 spayed female) and 6 cats (6 domestic short hair,8 months to 3 years, 4 castrated male and 2 spayed female) in this study. We measured the pulp cavity to tooth width ratio (P/T ratio) and periodontal space of maxillary and mandibular canine teeth, maxillary fourth premolar, mandibular first molar, maxillary third premolar and mandibular fourth premolar. RESULTS: P/T ratio and periodontal space in the overall dentition of both dogs and cats were smaller in DTR compared to CT. In addition, CT images at 1.0 mm slice thickness was generally measured to be greater than the images at 0.5 mm slice thickness. CONCLUSIONS: The results indicate that CT with thin slice thickness provides more accurate information on the dentoalveolar structures. Additional DTR, therefore, may not be required for evaluating dental structure in small-sized dogs and cats.


Asunto(s)
Gatos/anatomía & histología , Perros/anatomía & histología , Radiografía Dental/veterinaria , Tomografía Computarizada por Rayos X/veterinaria , Alveolo Dental/diagnóstico por imagen , Animales , Femenino , Masculino
8.
Shanghai Kou Qiang Yi Xue ; 29(4): 431-434, 2020 Aug.
Artículo en Chino | MEDLINE | ID: mdl-33089297

RESUMEN

The announcement of National Health Commission on January 20, 2020 (No.1 of 2020) has included novel coronavirus pneumonia into the B class infectious diseases according to the law of the People's Republic of China on the prevention and control of infectious diseases, and has been managed as A class infectious diseases. People's governments at all levels and health administration departments have been paying high attention to it. With the alleviation of COVID-19 nationwide, dental clinics gradually resume to work. The main transmission routes of COVID-19 are respiratory droplets and contact transmission, hence oral radiological examination is kind of a high-risk operation. Standardized radiologic process is of great significance to reduce the risk of COVID-19 transmission. In accordance with the national and Shanghai epidemic prevention requirements, and in combination with the actual situation of various medical institutions, Oral and Maxillofacial Radiology Committee of Shanghai Stomatological Association formulated the expert consensus on standardized prevention and control of COVID-19 for clinical reference. This recommendation will be updated according to the situation of epidemic prevention and control in China and the new relevant diagnosis and treatment plans.


Asunto(s)
Infecciones por Coronavirus , Pandemias , Neumonía Viral , Radiografía Dental , Betacoronavirus , China , Consenso , Humanos
9.
Endodoncia (Madr.) ; 38(2): 6-12, oct. 2020. ilus
Artículo en Español | IBECS | ID: ibc-198454

RESUMEN

Las perforaciones radiculares son complicaciones no deseadas que pueden ocurrir durante el tratamiento de conductos. Los principales factores que afectan el pronóstico de un diente que presenta una perforación son la localización y el tamaño de esta, el tiempo transcurrido hasta su reparación, el grado de contaminación previa, y la presencia de una radiolucidez adyacente. La aparición de materiales biocompatibles como el agregado de trióxido mineral (MTA) incrementó de forma sustancial el pronóstico de estos dientes alcanzando tasas de éxito de alrededor del 90%. El objetivo de este artículo es describir el manejo ortógrado de dos casos con perforaciones radiculares laterales en los que se utilizaron materiales y técnicas distintas para su sellado. En ambos casos, previamente al sellado ortógrado de las perforaciones, se realizó una desinfección abundante con hipoclorito de sodio (NaOCl) al 2,5%. En el primer caso, se realizó la obturación del tercio apical del conducto usando una técnica de condensación vertical con gutapercha caliente, y posteriormente se obturó el resto del conducto, incluida la perforación, mediante MTA blanco (Angelus, Londrina, PR, Brasil). En el segundo caso, que además presentaba la dificultad añadida de un instrumento fracturado, se utilizó Biodentine (Septodont, Saint-Maur-des-Fosses, Francia) en toda la longitud del conducto radicular donde se encontraba la perforación. La ausencia de signos y síntomas clínicos y la curación radiográfica en progreso revelan unos resultados satisfactorios en las revaluaciones postoperatorias a los 6 y 18 meses


Root perforations are undesired complications that can occur during root canal treatments. The prognosis of teeth with root perforations could be affected by several factors described in the literature, such as location, size, immediacy in the repair, previous microbial contamination and the presence of a radiolucency adjacent to perforation. However, the introduction of mineral trioxide aggregate (MTA) resulted in an improved prognosis and higher success rates. The purpose of this case report was to describe two nonsurgical endodontic retreatments with lateral root perforations using two different materials and techniques for filling. A disinfection with 2,5% sodium hypochlorite was carried out in both root canals with root perforation. In the first case, the apical third of the canal was filled with vertically compacted warm gutta-percha, while the rest of the canal was sealed with white MTA (Angelus, Londrina, PR, Brazil) for proper sealing of the perforation. In the second case, in addition to presenting the added difficulty of a separated instrument, the complete root canal filling with perforation was performed using Biodentine (Septodont, Saint-Maur-des-Fosses, France). The absence of clinical signs and symptoms and the radiographic healing in progress revealed satisfactory results after 6 and 18 months of follow-up


Asunto(s)
Humanos , Adulto , Anciano , Cavidad Pulpar/lesiones , Obturación Retrógrada/métodos , Materiales de Obturación del Conducto Radicular/uso terapéutico , Cavidad Pulpar/diagnóstico por imagen , Tratamiento del Conducto Radicular/efectos adversos , Radiografía Dental , Tomografía Computarizada de Haz Cónico , Resultado del Tratamiento , Combinación de Medicamentos , Óxidos/uso terapéutico , Compuestos de Aluminio/uso terapéutico , Compuestos de Calcio/uso terapéutico , Silicatos/uso terapéutico
10.
Endodoncia (Madr.) ; 38(2): 20-25, oct. 2020. ilus
Artículo en Español | IBECS | ID: ibc-198456

RESUMEN

INTRODUCCIÓN: El primer molar superior se caracteriza por tener 3 raíces y cuatro conductos radiculares. La presencia de cuatro raíces es un hallazgo inusual, pocas veces reportado en la literatura. CASO CLÍNICO: Acude a la consulta un paciente caucásico con pulpititis irreversible del 2.6. Se decide iniciar el trata-miento de conductos, pero dada la diferente morfología radicular visible radiográficamente, se realiza una CBCT previa. En el corte axial, se aprecian 4 raíces, con ápices totalmente independientes. Además, la raíz mesiovestibular presenta un único conducto y forma redondeada. Con la ayuda del microscopio se realiza una apertura inusual y se localizan los cuatro conductos. Finalizadas la instrumentación, irrigación y obturación, se recubre el acceso cameral con composite, para la posterior realización de una incrustación, capaz de sellar la caries cervical y restaurar los puntos de contacto. En el control 2 años posterior, el paciente está totalmente asintomático y la restauración demuestra su funcionalidad y estética. CONCLUSIÓN: Las anomalías anatómicas pueden presentar-se en cualquier diente. Encontrar un primer molar superior con más de tres raíces es un hallazgo muy extraño, pero gracias a la ayuda de la radiología tridimensional, se pudo visualizar y tratar de forma adecuada. Ante cualquier imagen radiográfica donde no se pueda apreciar con claridad la anatomía dental a tratar, debemos realizar varias proyecciones radiográficas o una CBCT para poder conocer la morfología real a la que nos enfrentamos


INTRODUCTION: The upper first molar is characterized by having three roots and four root canals. The presence of four roots is an unusual finding, rarely reported in the literature. CLINICA CASE: A caucasian patient with irreversible pulpititis of 2.6 comes to the dental clinic. It was decided to start the root canal treatment, but due to the different root morphology visible radiographically, a previous CBCT was performed. In the axial section, 4 roots are seen, with completely independent apexes. Furthermore, the mesiovestibular root has a single canal and a rounded shape. With the help of the microscope, an unusual opening is made and the four canals are located. After the instrumentation, irrigation and obturation are completed, the cameral access is covered with composite, for the subsequent inlay, capable of sealing cervical caries and restoring the contact points. In the control 2 years later, the patient is completely asymptomatic and the restoration demonstrates its functionality and aesthetics. CONCLUSIONS: Anatomic anomalies occur in any tooth. Finding an upper first molar with more than three roots is a very strange finding, but thanks to the help of three-dimensional radiology, it was able to be properly visualized and treated. Before any radiographic image where the dental anatomy to be treated cannot be clearly seen, we must carry out several radiographic projections or a CBCT to be able to know the real morphology that we are facing


Asunto(s)
Humanos , Masculino , Adulto , Tratamiento del Conducto Radicular/métodos , Diente Molar/cirugía , Restauración Dental Permanente/métodos , Radiografía Dental , Raíz del Diente/diagnóstico por imagen , Tomografía Computarizada de Haz Cónico , Resultado del Tratamiento
11.
Endodoncia (Madr.) ; 38(2): 26-32, oct. 2020. ilus
Artículo en Español | IBECS | ID: ibc-198457

RESUMEN

Se trata de un retratamiento de conductos en el diente 1.1. El diente presenta percusión y palpación positiva y movilidad grado II. Ante la falta de información en la radiografía convencional se realiza una TCHC donde se observa tres perforaciones y perdida de la cortical vestibular y apical en el diente 1.1. Se llevó a cabo un tratamiento combinado, primero se realizó el retratamiento ortógrado del conducto con gutapercha termoplástica, segundo una apicectomía y sellado de las perforaciones con MTA de manera quirúrgica. A los 12 meses se comprueba mediante TCHC que se ha producido curación ósea y el diente esta asintomático, pero observamos una discoloracion a nivel de la perforación coronal. A los 5 años esta zona presenta una cavitación y se decide realizar un sellado de la perforación con resina compuesta debido a su localización supracrestal. Un año después la paciente no presenta signos clínicos ni radiológicos de patología


This is a root canals retreatment in tooth 1.1. The tooth presents positive percussion and palpation and grade II mobility. Due to the lack of information from the conventional radiography, we performed a CBCT, three root perforations and loss of the vestibular cortical bone and apical bone were observed in tooth 1.1. A combined treatment was carried out, first the orthograde retreatment of the root canal with thermoplastic obturation technique, second and apicoectomy and sealing of the perforations with MTA by surgery. At 12 months, it is observed in a new TCHC that bone healing has occurred and the tooth is asymptomatic, but we observed a discoloration at the level of the coronal perforation. At 5 years this area presents cavitation and it was decided to seal the perforation with composite resin due to its supracrestal location. A year later, the patient had no clinical or radiological signs of pathology


Asunto(s)
Humanos , Femenino , Anciano , Tratamiento del Conducto Radicular/métodos , Cavidad Pulpar/lesiones , Calcificación de Dientes , Apicectomía/métodos , Tomografía Computarizada de Haz Cónico , Radiografía Dental , Cavidad Pulpar/diagnóstico por imagen , Resultado del Tratamiento , Retratamiento
12.
Leg Med (Tokyo) ; 47: 101787, 2020 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-32992157

RESUMEN

This study was aimed at investigating and comparing exposure dose of workers and the surrounding workers. In addition, worker's exposure was also measure about lens and finger. Four intraoral portable X-ray units were evaluated. The stray radiations were measured using Pitman 37D and ionization chamber (Pitman). MyDosemini (ALOKA) was used for measurement of the finger exposure dose. Without the shield became high in anterior 0.5 m. Comparing the air dose for the four models used in this study showed a high tendency for the two NOMAD models. And using the shields, the images could be taken 4.6 times of the baseline at a maximum and 3.6 times on average. The finger radiation exposure dose was low with both of the NOMAD models, with no significant difference found. By setting the baseline value without a shield, finger radiation exposure when using a shield was lower than the detection limit for the D3000, and was reduced by approximately 94-96% for other three models. All models can photograph around 100 bodies, so it is considered that it is not necessary to switch out the operator considering the operation limit. But even if it does not reach the operation limit, the stochastic effects of radiation exposure can be increased as well as the deterministic effects of the operation limit. The operator and the surrounding workers seek to protect themselves. It is important to perform exposure management that takes into account the stochastic effects to the operator and the surrounding workers.


Asunto(s)
Exposición Profesional/efectos adversos , Exposición Profesional/análisis , Dosis de Radiación , Radiografía/efectos adversos , Radiografía/instrumentación , Dedos , Humanos , Cristalino , Exposición Profesional/prevención & control , Fantasmas de Imagen , Equipos de Seguridad , Radiografía Dental
13.
AJR Am J Roentgenol ; 215(4): 945-953, 2020 10.
Artículo en Inglés | MEDLINE | ID: mdl-32783561

RESUMEN

OBJECTIVE. The purpose of this study was to determine in a phantom the dose exposure of different dental 3D sectional imaging methods (CT and cone-beam CT [CBCT]) and different CT protocols. The aim was to establish optimal protocols with the lowest possible dose and diagnostically high image quality with special consideration given to tin prefiltration. MATERIALS AND METHODS. Dose was determined with thermoluminescence detectors at 20 different measuring points on an anthropomorphic phantom. Eight different CT protocols with and without tin filtering were compared with iterative reconstruction methods and a standard CBCT protocol. Objective and subjective image evaluations and a figure-of-merit analysis of the image data were performed by radiologists and maxillofacial surgeons. RESULTS. The determined dose-length products of the nine examinations were 5.0-111.9 mGy · cm with a calculated effective whole body dose of 20.7-505.9 µSv. Cone-beam CT was in the upper midfield with an effective dose of 229.3 µSv. On the basis of dose, objective image quality, and clinical evaluation results, tin filter protocols performed best. Protocols with higher doses were significantly less useful in the figure of merit comparison but because of their detailed bony representation are particularly necessary to answer certain questions about trauma and tumors. CONCLUSION. The use of tin filtering can reduce dose in dental CT examinations, compared with standard low-dose examinations, while maintaining good image quality. The dose performance is significantly inferior even to that of a cone-beam CT examination. High-dose protocols are necessary only for certain questions.


Asunto(s)
Tomografía Computarizada de Haz Cónico , Cabeza/diagnóstico por imagen , Imagenología Tridimensional , Tomografía Computarizada Multidetector , Dosis de Radiación , Radiografía Dental , Protocolos Clínicos , Humanos , Fantasmas de Imagen , Estaño
14.
Orv Hetil ; 161(30): 1260-1265, 2020 07.
Artículo en Húngaro | MEDLINE | ID: mdl-32653869

RESUMEN

Surgical guides and three-dimensional (3D) planning softwares used in everyday dental implantology open new possibilities in other fields of dentistry. While using the operation microscope in endodontic microsurgery provides more precise apicectomy, there is still no consent on the exact localisation and size of the bony window to be prepared for this surgery. Our aim is to describe a new, guided endodontic microsurgery method when osteotomy and apicectomy are planned in a 3D software and performed with a trephine bur. Based on data from Cone Beam Computed Tomography, planning of the surgical guide was performed with a 3D planning software (Smart Guide, dicomLAB, Hungary) in order to define the size of the bony window, the angulation and the depth of the trephine bur during the apicectomy. After preparing a mucoperiosteal flap, with the help of the dentally supported surgical guide, the trephine bur removes the cortical bone and the apex of the root simultaniously. Following the modern microsurgical protocol, after performing the ultrasonic retrograde preparation, mineral trioxide aggregate (ProRoot MTA; Dentsply Maillefer, Ballaigues, Switzerland) is placed as a retrograde filling to close the resected area. After the uneventful healing period, a complete bony regeneration can be seen on the 1-year follow up X-ray. The patient is symptom-free. This technique is considered to be faster and more precise than the non-guided endodontic microsurgery carried out without the utilization of a trephine bur. Orv Hetil. 2020; 161(30): 1260-1265.


Asunto(s)
Apicectomía/métodos , Tomografía Computarizada de Haz Cónico/métodos , Cavidad Pulpar/cirugía , Endodoncia/métodos , Microcirugia/métodos , Osteotomía/métodos , Impresión Tridimensional , Materiales de Obturación del Conducto Radicular , Tratamiento del Conducto Radicular/métodos , Compuestos de Aluminio , Compuestos de Calcio , Cavidad Pulpar/diagnóstico por imagen , Combinación de Medicamentos , Humanos , Hungría , Óxidos , Radiografía Dental , Silicatos , Diente , Resultado del Tratamiento , Procedimientos Quirúrgicos Ultrasónicos
15.
Oral Radiol ; 36(4): 395-399, 2020 10.
Artículo en Inglés | MEDLINE | ID: mdl-32601787

RESUMEN

Dental professionals have always been meticulous about infection control due to high risk of cross-contamination during dental procedures. Nevertheless, there is an urgent need to review and revise our current practice of infection control and develop more strict protocols that will prevent nosocomial spread of infection during COVID-19 outbreak and future pandemics. The risk of contamination is high during dental radiography if proper disinfection techniques are not applied. This document provides advice and guidance for infection control when practicing dental radiography during COVID-19 pandemic.


Asunto(s)
Infecciones por Coronavirus/epidemiología , Control de Infecciones/métodos , Neumonía Viral/epidemiología , Radiografía Dental/normas , Betacoronavirus , Infecciones por Coronavirus/prevención & control , Humanos , Pandemias/prevención & control , Neumonía Viral/prevención & control
16.
Oral Radiol ; 36(4): 400-403, 2020 10.
Artículo en Inglés | MEDLINE | ID: mdl-32638200

RESUMEN

The current coronavirus disease 2019 (COVID-19) outbreak has brought substantial challenges to the world health system, including the practice of dental and maxillofacial radiology (DMFR). DMFR will carry on an imperative role in healthcare during this crisis. This rapid communication has collected and evaluated all the best current evidence and published guidelines as well as professional recommendations to help maxillofacial radiologists and dental practitioners for safer radiological and imaging examinations on healthy, suspected, or confirmed COVID-19 patients during outbreak. Some strategies have been depicted including procedural indications, infection control, and correct employment of personal protection equipment along with evoking the proper practice environment during and after the COVID-19 outbreak.


Asunto(s)
Infecciones por Coronavirus/epidemiología , Control de Infecciones/métodos , Neumonía Viral/epidemiología , Radiografía Dental , Betacoronavirus , Infecciones por Coronavirus/prevención & control , Odontólogos , Humanos , Pandemias/prevención & control , Equipo de Protección Personal , Neumonía Viral/prevención & control , Rol Profesional , Radiólogos
17.
Artículo en Inglés | MEDLINE | ID: mdl-32665203

RESUMEN

OBJECTIVES: This study assessed effective doses (E) from conventional and stationary intraoral tomosynthesis (s-IOT) radiography for posterior bitewing (PBW) examinations and evaluated the effect of sensor attenuation. STUDY DESIGN: An adult human tissue-equivalent phantom and optically stimulated luminescent dosimeters were used. Series of 4 PBW radiographs were acquired with circular and rectangular collimation. s-IOT PBW radiographs were acquired with built-in rectangular collimation. Radiographs were acquired without and with a sensor in the beam path. RESULTS: E (in µSv) was 15.7 and 8.2 for conventional-circular, 4.6 and 1.1 for conventional-rectangular, and 11.9 and 5.9 for s-IOT in sensor-absent and sensor-present scenarios, respectively. For sensor-absent exposures, E for conventional-rectangular was 29.3% and E for s-IOT was 75.8% of the conventional-circular dose. With the sensor present, these values were 13.4% and 72.0%, respectively (P < .001). Sensor-present E was lower than sensor-absent E for all modalities (P < .001). Reductions in equivalent doses were similar to effective dose reductions. CONCLUSIONS: For PBW examinations, E for s-IOT was smaller than for conventional radiography with circular collimation, but larger than for conventional radiography with rectangular collimation. The presence of a sensor maintained these differences but reduced E for all modalities.


Asunto(s)
Radiografía Dental , Radiometría , Adulto , Humanos , Fantasmas de Imagen , Dosis de Radiación , Radiografía , Radiografía de Mordida Lateral
18.
Niger J Clin Pract ; 23(7): 1026-1029, 2020 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-32620736

RESUMEN

When teeth have responded poorly to conventional endodontic treatment or when they cannot be treated adequately by nonsurgical means, surgical endodontics remains the treatment of choice. Healing of apical lesions occurs by repair, most of the time. "Repair is the healing of a wound by tissue that does not fully restore the architecture or function of the affected unit". Since this is not ideal, newer regenerative procedures that aim to restore lost tissue have been introduced. ß -Tricalcium phosphate is an alloplastic bone graft material that forms a scaffold for closing the bony defect. It is osteoconductive. Platelet-rich plasma (PRP) and platelet-rich fibrin (PRF) are platelet concentrates, rich in growth factors and they promote regeneration by osteoinduction. This article describes cases of bone augmentation with a combination of PRP + ß -TCP and PRF + ß -TCP for treatment of the chronic periapical lesion. The cases were followed for six months and one year and healing was evaluated quantitatively using cone beam computed tomography.


Asunto(s)
Fosfatos de Calcio/uso terapéutico , Tomografía Computarizada de Haz Cónico/métodos , Fibrina Rica en Plaquetas , Plasma Rico en Plaquetas , Adulto , Regeneración Ósea , Trasplante Óseo , Femenino , Humanos , Radiografía Dental , Ápice del Diente/diagnóstico por imagen , Ápice del Diente/cirugía , Cuello del Diente/patología , Resultado del Tratamiento , Cicatrización de Heridas
19.
Br Dent J ; 229(2): 105-109, 2020 07.
Artículo en Inglés | MEDLINE | ID: mdl-32710056

RESUMEN

Due to the coronavirus pandemic, all routine dental care in the UK ceased on 25 March 2020. Liverpool University Dental Hospital (LUDH) responded by commencing an emergency dental service on the same date. Clinicians were redeployed within the Hospital to meet the needs of the service, including staffing of the radiology department. LUDH followed Royal College recommendations by taking extraoral radiographs in preference to intraoral radiographs due to the risk of inducing an aerosol. Issues were identified with clinical diagnosis from sectional panoramic radiographs, which led to the introduction of extraoral bitewings being taken as an alternative. A quality assurance audit found that these images provided a substantially lower radiation dose and produced excellent quality images with improved diagnostic accuracy. This article aims to summarise how our radiography practices changed in response to the coronavirus and how the lessons that we have learnt provide an opportunity to modify and improve future practice, beyond the pandemic.


Asunto(s)
Infecciones por Coronavirus , Pandemias , Neumonía Viral , Betacoronavirus , Humanos , Radiografía Dental , Radiografía Panorámica
20.
Eur Arch Paediatr Dent ; 21(4): 463-508, 2020 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-32557182

RESUMEN

PURPOSE: To evaluate the effectiveness of all radioprotective measures in underage patients who undergo a dental radiodiagnostic examination. METHODS: A systematic review was performed including randomised controlled trials (RCTs), or cluster trials, cohort studies, cross-sectional studies, case-control studies and comparative in vitro research. These studies examined the healthy underage human population (below 18 years) undergoing a dental radiodiagnostic examination. All radioprotective measures were included except for justification as an intervention. The primary outcomes were in vivo mortality and morbidity. Some surrogate or indirect outcomes such as in vitro effective dose and organ absorbed doses were also accepted. Secondary outcomes with regards to image quality and therapeutic value were also analysed. RESULTS: Eighteen papers were eligible for implementation. Fifteen studies underwent narrative synthesis. Regression analysis was performed on three studies. CONCLUSION: The following radioprotective measures can reduce the exposure dose. For lateral cephalometry: collimation, filtration, the fastest receptor type and circumstantial thyroid shielding. For oblique lateral radiographs: the shortest exposure time, a smaller horizontal angulation, a longer focus to skin distance. For intraoral radiography: rectangular collimation, the fastest image receptor speed and thyroid shielding when the thyroid gland is in line of or very close to the primary beam. For panoramic radiographs: collimation, the fastest receptor type and the use of automatic exposure control (AEC) or manual adjustment of intensity. For cone-beam computed tomography: collimation, the largest voxels size in relation to the treatment need, change in image settings such as ultra-low dose settings, shorter exposure time, a lower amount of projections, lower beam intensity, reduction of the potential, use of a thyroid shield except in two situations and the use of AEC. All of the changes in exposure parameters should be performed while maintaining a sufficient therapeutic value on an individual and indication-based level.


Asunto(s)
Protección Radiológica , Radiografía Dental , Cefalometría , Niño , Humanos , Dosis de Radiación , Radiografía Panorámica
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