scholarly journals Dental Imaging – A basic guide for the radiologist

2018 ◽  
Vol 191 (03) ◽  
pp. 192-198 ◽  
Author(s):  
Max Masthoff ◽  
Mirjam Gerwing ◽  
Malte Masthoff ◽  
Maximilian Timme ◽  
Johannes Kleinheinz ◽  
...  
Keyword(s):  
Dental Treatment ◽  
Imaging Techniques ◽  
Cone Beam Ct ◽  
Dental Trauma ◽  
Dental Radiology ◽  
Tooth Structure ◽  
Dental Imaging ◽  
Current State ◽  
Postoperative Control ◽  
Focus Of Infection

Background As dental imaging accounts for approximately 40 % of all X-ray examinations in Germany, profound knowledge of this topic is essential not only for the dentist but also for the clinical radiologist. This review focuses on basic imaging findings regarding the teeth. Therefore, tooth structure, currently available imaging techniques and common findings in conserving dentistry including endodontology, periodontology, implantology and dental trauma are presented. Methods Literature research on the current state of dental radiology was performed using Pubmed. Results and Conclusion Currently, the most frequent imaging techniques are the orthopantomogram (OPG) and single-tooth radiograph, as well as computer tomography (CT) and cone beam CT mainly for implantology (planning or postoperative control) or trauma indications. Especially early diagnosis and correct classification of a dental trauma, such as dental pulp involvement, prevents from treatment delays or worsening of therapy options and prognosis. Furthermore, teeth are commonly a hidden focus of infection.Since radiologists are frequently confronted with dental imaging, either concerning a particular question such as a trauma patient or regarding incidental findings throughout head and neck imaging, further training in this field is more than worthwhile to facilitate an early and sufficient dental treatment. Key points  Citation Format

scholarly journals Recommendations, Practices and Infrastructural Model for the Dental Radiology Set-up in Clinical and Academic Institutions in the COVID-19 Era

Biology ◽  
2020 ◽  
Vol 9 (10) ◽  
pp. 334
Author(s):  
Anu Sushanth. A ◽  
Kumar Chandan Srivastava ◽  
Deepti Shrivastava ◽  
Hala A. Hosni ◽  
Zafar Ali Khan ◽  
...  
Keyword(s):  
Disease Transmission ◽  
Dental Treatment ◽  
Dental Radiology ◽  
Dental Imaging ◽  
Work Routine ◽  
Long Time ◽  
Prevention Protocol ◽  
Global Catastrophe ◽  
Set Up

The pandemic of Coronavirus disease (COVID-19) has emerged as a global catastrophe that is plaguing mankind. In the past eight months since the world discovered about COVID-19, we learned a lot about server acute respiratory syndrome coronavirus 2 (SARS CoV-2) and perhaps there is much more to discover and understand about the virus. With the current understanding of the disease, we assume it will remain in an active state of transmission and progression among the community for a long time. Thus, it is advisable to adopt the disease’s prevention protocol in our daily and work routine. During this pandemic patient requiring dental treatment cannot be neglected and the role of dental imaging is crucial in delivering treatment. Hence, this article attempts to provide an evidence-based compilation about the mode of transmission and clinical features of COVID-19. It also throws light on the potential source of disease transmission in the dental radiology setting. In addition, it suggests preventive measures to curb the infection and infrastructural model of the clinical setting that will assist in achieving control over the disease transmission. This article intends to project a strategy about protocols, infrastructure, and daily activities in a dental radiology office that institutions can adopt with modifications according to their local scenario.

Recent applications of TEM to the study of interfaces

1990 ◽  
Vol 48 (4) ◽  
pp. 308-309
Author(s):  
C. Barry Carter
Keyword(s):  
High Resolution ◽  
Sample Preparation ◽  
Grain Boundaries ◽  
Diffuse Scattering ◽  
Imaging Techniques ◽  
Amorphous Material ◽  
Contrast Imaging ◽  
Current State ◽  
Actual Nature ◽  
High Resolution Images

This paper will review the current state of understanding of interface structure and highlight some of the future needs and problems which must be overcome. The study of this subject can be separated into three different topics: 1) the fundamental electron microscopy aspects, 2) material-specific features of the study and 3) the characteristics of the particular interfaces. The two topics which are relevant to most studies are the choice of imaging techniques and sample preparation. The techniques used to study interfaces in the TEM include high-resolution imaging, conventional diffraction-contrast imaging, and phase-contrast imaging (Fresnel fringe images, diffuse scattering). The material studied affects not only the characteristics of the interfaces (through changes in bonding, etc.) but also the method used for sample preparation which may in turn have a significant affect on the resulting image. Finally, the actual nature and geometry of the interface must be considered. For example, it has become increasingly clear that the plane of the interface is particularly important whenever at least one of the adjoining grains is crystalline.A particularly productive approach to the study of interfaces is to combine different imaging techniques as illustrated in the study of grain boundaries in alumina. In this case, the conventional imaging approach showed that most grain boundaries in ion-thinned samples are grooved at the grain boundary although the extent of this grooving clearly depends on the crystallography of the surface. The use of diffuse scattering (from amorphous regions) gives invaluable information here since it can be used to confirm directly that surface grooving does occur and that the grooves can fill with amorphous material during sample preparation (see Fig. 1). Extensive use of image simulation has shown that, although information concerning the interface can be obtained from Fresnel-fringe images, the introduction of artifacts through sample preparation cannot be lightly ignored. The Fresnel-fringe simulation has been carried out using a commercial multislice program (TEMPAS) which was intended for simulation of high-resolution images.

O impacto da Covid-19 na Odontologia – revisão sistemática

2021 ◽  
Vol 12 (46) ◽  
pp. 15-22
Author(s):  
Ana de Lourdes Sá de Lira ◽  
Francisca Janiele de Sousa
Keyword(s):  
Risk Factors ◽  
Systematic Review ◽  
Dental Care ◽  
Dental Treatment ◽  
Dental Trauma ◽  
Urgent Care ◽  
Inclusion Criteria ◽  
Dental Clinics ◽  
Mode Of Transmission ◽  
Irreversible Pulpitis

This study aimed to review, qualify and summarize the existing evidence on associations and risk factors for Covid-19 during dental treatment and dentists’ knowledge about these risks. After being registered with PROSPERO, the systematic review was carried out in accordance with the PRISMA guidelines, with searches in electronic databases, in specific journals, manual searches and Google Scholar, without language restrictions, from December 2019 to August 2020. Two questions were asked to be investigated: did patients seek dental care in the emergency room and do dentists know the symptoms and the mode of transmission of Covid-19, feeling qualified to attend them? Only 6 articles were included because they met all defined inclusion criteria. It was concluded that endodontic urgencies and emergencies with symptomatic irreversible pulpitis are the most common, consisting of a much higher proportion of dental emergencies during Covid-19 epidemic compared with dental trauma and no-urgent care. Although dentists are aware of the symptoms, mode of transmission, infection controls, and measures in dental clinics, they do not feel confident about the correct measures to be taken to prevent Covid-19 for their staff and patients.

Radiology of the head and neck

2021 ◽  
pp. 973-976
Author(s):  
Ivan Zammit-Maempel
Keyword(s):  
Head And Neck ◽  
Imaging Techniques ◽  
Cone Beam Ct ◽  
Neck Mass ◽  
Positron Emission ◽  
Pet Ct ◽  
Magnetic Resonance Imaging Mri ◽  
Video Fluoroscopy

Various imaging techniques are used in the staging and follow-up of head and neck cancer and evaluating patients presenting with a neck mass. The workhorses in imaging the neck are ultrasonography, computed tomography (CT), and magnetic resonance imaging (MRI) with positron emission tomography CT (PET-CT) increasingly being requested. Plain radiographs, contrast studies, video fluoroscopy, angiography, and cone beam CT have limited but important roles. This chapter discusses the role of some of these modalities.

Paediatric dentistry

2020 ◽  
pp. 55-119
Keyword(s):  
Emergency Management ◽  
Dental Trauma ◽  
Paediatric Dentistry ◽  
Permanent Teeth ◽  
Behaviour Management ◽  
Developmental Abnormalities ◽  
Tooth Structure ◽  
Tooth Number ◽  
Tooth Form ◽  
Tooth Colour

This chapter introduces the principal aims of treatment in paediatric patients, detailing examination, treatment planning, and prevention. Various approaches to behaviour management are discussed including tell, show, do; behaviour shaping; reinforcement; and desensitization. The emergency management of children with toothache is also discussed alongside developmental abnormalities (including abnormalities of tooth eruption and exfoliation, tooth number, tooth structure, tooth form, and tooth colour) local anaesthesia, and restorative techniques. Injuries to primary teeth and to permanent teeth are discussed. The chapter also provides advice on the management of dental trauma, with information on safeguarding children.

Imaging Techniques

2018 ◽  
pp. 75-88
Author(s):  
Daniel C. O’Brien ◽  
Junjuian Huang ◽  
Scott A. Resnick
Keyword(s):  
Computed Tomography ◽  
Magnetic Resonance ◽  
Magnetic Resonance Angiography ◽  
Multidetector Ct ◽  
Imaging Techniques ◽  
Cone Beam Ct ◽  
Digital Subtraction ◽  
Interventional Radiologist ◽  
Multidetector Ct Angiography

Minimally invasive interventional radiographic procedures rely on many of the same imaging techniques as are used in diagnostic studies. This chapter describes the imaging modalities most commonly utilized by the interventional radiologist intraprocedurally. These include fluoroscopy, digital subtraction angiography (DSA), sonographic techniques for percutaneous interventions and intravascular ultrasound, and computed tomography (CT) and cone beam CT (CBCT). Imaging techniques used adjunctively in the procedure planning and follow-up phases are also briefly reviewed, including multidetector CT angiography, magnetic resonance angiography (MRA), and sonographic vascular evaluation. Specific interventions are mentioned throughout as a means of illustrating the clinical utilities of these imaging techniques, although specific procedural considerations are discussed more thoroughly elsewhere.

Endodontic Management of Canal Calcification in Maxillary Central Incisor Using 3D Prototyping Technique: A Case Report

2020 ◽  
Vol 11 (1) ◽  
pp. 93-96
Author(s):  
Suryasowjanya Doranala ◽  
Harikumar Vemisetty ◽  
Rajani Punna ◽  
Aditya Mohan Alwala
Keyword(s):  
Case Report ◽  
Imaging Techniques ◽  
Three Dimensional ◽  
Conventional Technique ◽  
Cone Beam ◽  
Central Incisor ◽  
Cavity Preparation ◽  
Present Case Report ◽  
Maxillary Central Incisor ◽  
Tooth Structure

Teeth with calcific metamorphosis pose a challenge to the endodontist in achieving proper access, identification, and debridement of the root canal. With the conventional technique, radiographs and bur orientation have dictated the access cavity preparation, which leads to the removal of more sound tooth structure and iatrogenic errors. To overcome these issues, the recent diagnostic imaging techniques such as cone beam computed tomography followed by three-dimensional fabrication of template have been proposed, which aid the clinician to accurately locate and negotiate the obliterated canal. The present case report describes the importance of conservative access cavity preparation with the use of the guided endodontic technique for the treatment of calcified canals in the maxillary central incisor.

scholarly journals Comparative dimensional study between panoramic X-ray (OPG) and cone beam CT (CBCT)

2016 ◽  
Vol 22 (3) ◽  
pp. 196-202 ◽  
Author(s):  
Marinela Tonea ◽  
Crina Ivanciu ◽  
C. Trascu ◽  
F.C. Dogioiu ◽  
I. Damian ◽  
...  
Keyword(s):  
Cone Beam Ct ◽  
Vertical Axis ◽  
Daily Practice ◽  
Cone Beam ◽  
Radiology Department ◽  
X Ray ◽  
Dental Imaging ◽  
Anterior Teeth ◽  
Measured Length ◽  
Made In

Abstract During daily practice, we find various situations in which the 1/1 correspondence between panoramic x-ray (OPG) and reality seems not to be respected. In the studied literature, there are articles on this subject, but our study was made based on cases in a highly frequented dental imaging clinic in Bucharest. The study was carried out on a number of 24 patients selected from the radiology department. Using Romexis Viewer software, with soft’s specific feature, measurements have been made (in approximately horizontal and approximately vertical axis) in three different areas: anterior, bicuspid and molar. Various results have been obtained, depending on the studied area. CBCT measured length of anterior teeth was higher than that measured on OPG, in the majority of cases. Molar width (mesio-distal distance) parameter variation was very small between OPG and CBCT.

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