Technical Errors and Artefacts in Dental Radiography

Różyło‐Kalinowska, Ingrid

doi:10.1007/978-3-030-41372-9_7

Cited by 2 publications

(13 citation statements)

References 5 publications

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“…During the examination, the spine has to be as straight as possible, and the neck should be extended. This position may be obtained through a slight lower inclination of chin, with the feet parallel and anteriorly related to body [26,27]. This because the cervical spine has to remain within the focal trough with no superimposition on the anterior teeth.…”

Section: Pan Acquisition Principlesmentioning

confidence: 99%

“…In addition, a straight spine and an elongated neck reduce the possibility of the X-ray tube bumping into the back or shoulders of patients with a big physical stature or obvious postural thoracic kyphosis [12][13][14]. Furthermore, patients have to keep the tongue pressed against the palate (roof of the mouth) to avoid both overexposure and the presence of a radiolucent area representing the shadow of the air space on the upper teeth apexes [23][24][25]27].…”

Section: Pan Acquisition Principlesmentioning

confidence: 99%

“…In particular, structures located closer to the source appear increased in their dimensions; conversely, structures located far from the source appear smaller [26]. The shape and width of the focal trough are determined by the path and velocity of the detector and the X-ray tube head, alignment of the X-ray beam, and collimator width [26,27]. Generally, the focal trough-also called focal plane or image layer-in PAN has limited size, ranging from 6 mm to 8 mm and 12 mm to 16 mm in anterior and posterior areas, respectively.…”

Section: The Variables Of a Correct Pan Examinationmentioning

confidence: 99%

“…A correct PAN requires the cautious positioning of a patient and an appropriate technique. Overall, six parameters define whether a PAN is correctly performed, namely (i) symmetry of the two sides, (ii) occlusal plane with a mild upper concavity, (iii) localization of the two mandibular condyles at the same height, (iv) clear representation of dental apexes of upper teeth, (v) straight position of the cervical spine, and (vi) adequate exposure parameters [26,27].…”

Section: Evaluation Of Pan Examinationmentioning

confidence: 99%

“…In these cases, one side appears increased in size compared to the other one, which means that the magnified area is placed closer to the radiation source and can thus be related to a lateral orientation of patient's head. If errors in horizontal positioning are present, an asymmetric vertical dark band can be observed in the paraincisal area; this corresponds to the asymmetric position of two strong X-ray-absorbing structures, i.e., the cervical spine and occipital bone [26,27,31]. In cases where the positioning of the midsagittal plane has failed, an uneven magnification in the horizontal size of right and left sides can be observed, along with horizontal distortion in posterior areas and excessive tooth overlapping in premolar areas.…”

Section: Symmetrymentioning

confidence: 99%

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Basic Knowledge and New Advances in Panoramic Radiography Imaging Techniques: A Narrative Review on What Dentists and Radiologists Should Know

et al. 2021

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Objectives: A panoramic radiograph (PAN) is the most frequently diagnostic imaging technique carried out in dentistry and oral surgery. The correct performance of image acquisition is crucial to obtain adequate image quality. The aim of the present study is to (i) review the principles of PAN image acquisition and (ii) describe positioning errors and artefacts that may affect PAN image quality. Methods: Articles regarding PAN acquisition principles, patient’s positioning errors, artefacts, and image quality were retrieved from the literature. Results: Head orientation is of the utmost importance in guaranteeing correct image acquisition. Symmetry, occlusal plane inclination, mandibular condyles localization, cervical spine position, aspect of upper teeth root apexes, exposure parameters, and metal and motion artefacts are factors that greatly affect the image quality of a successful PAN. Conclusions: Several factors are the basis for PAN performance; therefore, a systematic approach that takes into account correct patient positioning and preparation is strongly suggested to improve overall examination quality.

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Section: Pan Acquisition Principlesmentioning

confidence: 99%

Section: Pan Acquisition Principlesmentioning

confidence: 99%

Section: The Variables Of a Correct Pan Examinationmentioning

confidence: 99%

Section: Evaluation Of Pan Examinationmentioning

confidence: 99%

Section: Symmetrymentioning

confidence: 99%

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Basic Knowledge and New Advances in Panoramic Radiography Imaging Techniques: A Narrative Review on What Dentists and Radiologists Should Know

et al. 2021

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Effect of Low-Level Laser Therapy on Bone Formation in Rapid Palatal Expansion: A Systematic Review

2022

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Introduction: Crossbite is a common malocclusion with a 7-23% prevalence rate. Treatment is based on the expansion of the mid-palatal suture (MPS) with Rapid Palatal Expansion(RPE) followed by a retention period to reach new bone maturation, enough to maintain the results stable. This systematic review was conducted to evaluate the effectiveness of low-level laser therapy (LLLT) in increasing bone formation in MPS. Methods: This article was written by the PRISMA checklist. Electronically, 3 databases, namely PubMed, Scopus, and Embase, were searched with the keywords selected based on PICO. Time (2010-2021) and language restrictions were performed. Results: 528 articles, out of which 374 studies were screened, were found, and 9 full-text articles were subsequently included considering these inclusion criteria: randomized clinical trial (RCT) that examines the efficacy of LLLT in rapid palatal expansion (RPE), age under 15 years, non-surgical RPE with a tooth-supported appliance, and low-intensity laser application. Finally, 4 articles were appraised by Cochrane version 5.2.0 with 7 domains. 3 of 4 articles showed LLLT has a significant impact on bone formation. One of them showed no significant difference in pain perception and bone density between the laser and non-laser groups. Conclusion: While many studies have assessed the effect of LLLT on bone formation in animal models, high-quality clinical trials are missing in this regard. The available clinical trials suggest a positive effect of LLLT on sutural bone formation after RPE.

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Technical Errors and Artefacts in Dental Radiography

Cited by 2 publications

References 5 publications

Basic Knowledge and New Advances in Panoramic Radiography Imaging Techniques: A Narrative Review on What Dentists and Radiologists Should Know

Basic Knowledge and New Advances in Panoramic Radiography Imaging Techniques: A Narrative Review on What Dentists and Radiologists Should Know

Effect of Low-Level Laser Therapy on Bone Formation in Rapid Palatal Expansion: A Systematic Review

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