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    Wyświetlanie 1-7 z 7
    Tytuł:
    Zastosowanie tomografii wolumetrycznej w obrazowaniu stomatologicznym do oceny zmian okołowierzchołkowych
    Application of volumetric tomography in dental imaging to assess periapical lesions
    Autorzy:
    Czernilewska, M.
    Milewski, G.
    Powiązania:
    https://bibliotekanauki.pl/articles/98904.pdf
    Data publikacji:
    2013
    Wydawca:
    Politechnika Śląska. Katedra Biomechatroniki
    Tematy:
    tomografia wolumetryczna
    tomografia CBCT
    zmiana okołowierzchołkowa
    funkcja diagnostyczna
    oprogramowanie
    obrazowanie medyczne
    volumetric tomography
    CBCT tomography
    periapical lesion
    diagnostic function
    software
    medical imaging
    Opis:
    Celem podjętej pracy było zastosowanie tomografii CBCT w obrazowaniu stomatologicznym do oceny zmian okołowierzchołkowych jak również wykorzystanie funkcji diagnostycznych dostępnego oprogramowania. Zakres diagnostyczny pracy obejmował 41 przypadków zmian okołowierzchołkowych zębów różnych grup badanych ogółem dla 33 pacjentów. Pierwsza ocena zmian okołowierzchołkowych została dokonana w programie iCATVision. Następnie dokładne zaznaczenie pola powierzchni zmian zostało opracowane w programie Onis 2.4.
    The purpose of the work was to describe the application of the CBCT tomography in dental imaging, to evaluate periapical lesions as well as to present the use of diagnostic functions in the available software. Diagnostic scope presented in the paper included 41 cases of pariapical lesions in all sorts of the examined teeth groups total for 33 patients. The first assessment of periapical lesions was made in iCATVision. Then the precise selection of the surface area of lesions were drawn up in Onis 2.4.
    Źródło:
    Aktualne Problemy Biomechaniki; 2013, 7; 33-38
    1898-763X
    Pojawia się w:
    Aktualne Problemy Biomechaniki
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Dental use of cone beam computed tomography in pediatric embolized arteriovenous maxillofacial malformation
    Autorzy:
    Olszewski, Raphael
    Theys, Stéphanie
    Powiązania:
    https://bibliotekanauki.pl/articles/2129218.pdf
    Data publikacji:
    2021-10-02
    Wydawca:
    Presses Universitaires de Louvain
    Tematy:
    pediatric
    arteriovenous malformation
    CBCT
    embolization
    cone beam computed tomography
    Opis:
    Objective: Pediatric facial arteriovenous malformations (AVMs) are rare but can cause potentially fatal hemorrhages during dental procedures and oral surgery. In this article we present a systematic review of the medical open access literature on pediatric facial AVM. Case report: We illustrate our purpose with clinical dental use of cone beam computed tomography (CBCT) in pediatric embolized facial AVM to define the presence and the position of the right upper impacted canine. Conclusions: We advocate the use of CBCT as additional imaging tool in the follow-up of pediatric dentomaxillofacial AVM, and for depiction of dentoalveolar structures that are inaccessible by conventional dental radiography.
    Źródło:
    Nemesis. Negative Effects in Medical Sciences Oral and Maxillofacial Surgery; 2021, 20, 1; 1-20
    2593-3604
    Pojawia się w:
    Nemesis. Negative Effects in Medical Sciences Oral and Maxillofacial Surgery
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Contribution of dental private practitioners to publications on anatomical variations using cone beam computed tomography
    Autorzy:
    Hebda, Aleksandra
    Theys, Stéphanie
    de Roissart, Jean
    Perez, Eytan
    Olszewski, Raphael
    Powiązania:
    https://bibliotekanauki.pl/articles/2129253.pdf
    Data publikacji:
    2020-12-16
    Wydawca:
    Presses Universitaires de Louvain
    Tematy:
    citizen science
    open access
    cone beam computed tomography
    CBCT
    anatomical variation
    Opis:
    Objective: To investigate the participation of citizens-dental private practitioner in scientific articles about anatomical variations on dentomaxillofacial CBCT. Our null hypothesis was that private practice practitioners are not involved in publications on anatomical variations using cone beam computed tomography. Material and methods: This study was performed from home without access to our university library. Only PubMed database was used to perform our study. We found 384 articles published among 1830 articles corresponding to our inclusion/exclusion criteria. For each selected article we searched for affiliation of all of the authors (university, private dental practice, students, other). We applied a co-creation approach to involve colleagues from private practice in analyzing results of this study. Results: A large majority of authors have university affiliation (96.5%). Only 3% of authors come from private practice. Most of articles belong to the group of 7 emergent economies (E7), and from Asia. 47.9% of 96 journals published only one article on anatomical variations discovered on CBCT. The higher number of articles (18.75%) were published by journals related to endodontics. The 84% of articles were dispersed among a vast span of general and specific dental, and maxillofacial journals. The 68.4% of articles on variations in CBCT were available in closed access and 31.6% of articles were available in open access. Only 6.7% of articles were published in open access without author publication charges (APC). The 31.6% of authors with university affiliation choose open access for their article. 7.8% of authors from private practice were involved in publishing in closed access journals and 2.34% in open access journals. Only 3 articles (0.78%) were published by authors affiliated to private practice without involvement of university authors. 2.6% of articles involved students as co-authors. Authors with other affiliation were involved only in one closed access publication. For the step of co-creation none of 183 private practitioners, and 3/33 (9%) university-affiliated members of Nemesis Facebook group actively participated in analyzing the results of this study. Conclusions: the null hypothesis was accepted: dentists from private practice are exceptionally involved in publications on anatomical variations using CBCT in dentomaxillofacial area.
    Źródło:
    Nemesis. Negative Effects in Medical Sciences Oral and Maxillofacial Surgery; 2020, 14, 1; 1-54
    2593-3604
    Pojawia się w:
    Nemesis. Negative Effects in Medical Sciences Oral and Maxillofacial Surgery
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Diagnostic value of cone beam computed tomography in complex and compound odontomas: a systematic review and open classification matrix
    Autorzy:
    Dubron, Kathia
    Gurniak, Anna
    Gurniak, Eliza
    Politis, Constantinus
    Olszewski, Raphael
    Powiązania:
    https://bibliotekanauki.pl/articles/2129084.pdf
    Data publikacji:
    2022-05-08
    Wydawca:
    Presses Universitaires de Louvain
    Tematy:
    cone beam computed tomography
    CBCT
    complex odontoma
    compound odontoma
    odontogenic tumours
    Opis:
    Objective: Firstly, this review aims to analyse the recent literature about three-dimensional (3D) diagnostic imaging in complex and compound odontomas and compare it to two-dimensional (2D) imaging. Panoramic radiographs help to evaluate the vertical position of odontomas, and occlusal radiographs are used to evaluate the proximity to adjacent teeth. However, cone beam computed tomography (CBCT) can offer volumetric images, and therefore, a more accurate three-dimensional analysis. Secondly, this research aims to construct an open classification matrix for complex and compound odontomas for dentomaxillofacial CBCT radiology protocols based on a systematic literature review. Material and methods: Two systematic literature searches were conducted in PubMed (Medline), on 2 February 2022 concerning classification systems, and on 5 February 2022 concerning CBCT images. Results: In total, these searches revealed 391 papers by reviewing the databases mentioned above. Six articles were selected for inclusion on classification of odontomas and 13 articles were found on CBCT imaging. Consequently, the construction of an open classification matrix for compound and complex odontomas for dentomaxillofacial CBCT radiology protocols was performed using these 19 articles. Conclusions: CBCT offers a more precise position and accurate diagnosis of complex and compound odontomas compared to 2D imaging. Consequently, it enhances the detailed view of the site (multiple or unique), location (intraosseous, partially or completely extragnathic), size, extension (bony expansion, thinning or perforation cortical bone), density and type (denticulo type, particle type, denticulo-particle type, denticulo-amorphous type, amorphous tissue), relationship (with the crown or root of the definitive tooth), adjacent teeth resorption (deciduous or definitive), adjacent teeth (retention or impaction), and distance with adjacent structures (inferior alveolar nerve, sinus maxillaris), as well as adequate surgical planning. Moreover, this research presents an open classification matrix for the most complete description of compound and complex odontomas when analysing CBCT imaging.  
    Źródło:
    Nemesis. Negative Effects in Medical Sciences Oral and Maxillofacial Surgery; 2022, 23, 1; 1-50
    2593-3604
    Pojawia się w:
    Nemesis. Negative Effects in Medical Sciences Oral and Maxillofacial Surgery
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Badanie jakości wydruku elementów wykonanych techniką DLP przy wykorzystaniu tomografii wiązki stożkowej oraz tomografii konwencjonalnej
    Print quality test of elements made by DLP printing technique using cone beam ct and conventional CT
    Autorzy:
    Redutko, Joanna
    Szarek, Arkadiusz
    Wrona, Krzysztof
    Powiązania:
    https://bibliotekanauki.pl/articles/2201480.pdf
    Data publikacji:
    2019
    Wydawca:
    Politechnika Śląska. Katedra Biomechatroniki
    Tematy:
    druk 3D
    DLP
    tomografia wolumetryczna
    CBCT
    CT
    3D printing
    volumetric tomography
    Opis:
    Artykuł zawiera ocenę jakości wydruku elementów wykonanych w technice druku DLP, poprzez analizę projekcji otrzymanych z tomografu wolumetrycznego i konwencjonalnego. Podczas analizy określono czy możliwym jest wykonanie fantomu do CBCT z wydruku światłoutwardzalnego przy pomocy drukarki DLP. Badania tomograficzne miały na celu określenie obecności wtrąceń materiałowych i pęcherzy powietrza, mogących dawać efekt odbicia promieni rentgenowskich. Przeanalizowano ilość pochłanianej wiązki promieniowania poprzez pomiary wartości jednostek Hounsfielda dla wielu obszarów próbek.
    The article has been devoted to an evaluation of the print quality of elements made in the DLP printing technique, which was obtained as a result of the analysis of the projection from the volumetric and conventional CT. During this analysis the presence of air bubbles, material inclusions and other artifacts, which may give the effect of X-ray reflection, was determined. The amount of absorbed radiation beam was also analysed by measuring the Hounsfield unit values for many sample areas.
    Źródło:
    Aktualne Problemy Biomechaniki; 2019, 17; 101--109
    1898-763X
    Pojawia się w:
    Aktualne Problemy Biomechaniki
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Quality control test of cone beam computed tomography - constancy tests
    Autorzy:
    Redutko, J.
    Wrona, K.
    Szarek, A.
    Bańczyk, Ł.
    Powiązania:
    https://bibliotekanauki.pl/articles/1818824.pdf
    Data publikacji:
    2020
    Wydawca:
    Stowarzyszenie Komputerowej Nauki o Materiałach i Inżynierii Powierzchni w Gliwicach
    Tematy:
    CBCT
    cone beam computed tomography
    phantom
    quality control
    stożkowa tomografia komputerowa
    tomografia wiązki stożkowej
    fantom
    kontrola jakości
    Opis:
    Purpose: The paper describes tests of CBCT cone beam scanners carried out to ensure projection quality. Design/methodology/approach: During the studies, phantoms were scanned with a leading brand volumetric CT scanner according to the device manufacturer's recommendations. The water phantom and phantom made of PMMA with materials of different radiological densities were used in the performed tests. The image area during the tests was determined as a cylinder with diameter of 80 mm and height of 90 mm. In turn, exposure parameters were selected on the basis of clinically applied protocols of cranial imaging. Within carried out research, tests of noise level were performed, image homogeneity was analysed and Hounsfield units constancy was determined. To this end, 18 quality control tests were analysed, which were performed at intervals of about 30 days. Images obtained during phantom scans were analysed by determining the Hounsfield value of selected areas and their changes over time. Findings: The analysis of all carried out projection quality control tests showed that they met the criteria set by the manufacturer, falling within the predefined value ranges. One of the performed tests presented results approaching the limit of acceptable values. After notifying this case, it was shown that the CT scanner was serviced during that period. The obtained results of the quality control tests of water phantom as well as of the material phantom imaging were maintained at similar levels after the service activities. No changes were observed in the obtained mean values of Hounsfield units, which would indicate a decrease in diagnostic quality of CBCT projections. Research limitations/implications: The results presented in this publication require further analysis. These should be complemented by incl. analyses of spatial resolution and image geometry. Practical implications: Carried out research has shown that cyclical quality control testing by a qualified operator is an essential activity to ensure high diagnostic quality of the device. In addition, this analysis showed that procedures of in-service tests should not be omitted and delayed. Originality/value: Originality in these tests is the possibility to improve the procedures for performing basic quality control tests.
    Źródło:
    Journal of Achievements in Materials and Manufacturing Engineering; 2020, 102, 2; 66--75
    1734-8412
    Pojawia się w:
    Journal of Achievements in Materials and Manufacturing Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Supernumerary teeth in premolar and molar area on CBCT: a pictorial review.
    КПКТ-візуалізація надкомплектних зубів в ділянці премолярів і молярів: ілюстративний огляд
    Autorzy:
    Olszewski, Raphael
    Shimwa-Karengera, Stéphane
    Gurniak, Anna
    Gurniak, Eliza
    Serve, Alexis
    Simain Sato, Franklin
    Powiązania:
    https://bibliotekanauki.pl/articles/2129198.pdf
    Data publikacji:
    2022-01-06
    Wydawca:
    Presses Universitaires de Louvain
    Tematy:
    supernumerary teeth
    CBCT
    premolar
    molar
    cone beam computed tomography
    надкомлектні зуби
    конусно-променева комп’ютерна томографія
    премоляр
    моляр
    Opis:
    Objective: to build a descriptive classification of premolar and molar supernumerary teeth (ST) when preparing the cone beam computed tomography (CBCT) report. The aim is also to share wide range of CBCT images in the open access publishing model. Material and methods: For our review we systematically searched for articles from PubMed with 1) free full texts on ST in molar and premolar area and using CBCT, and 2) articles providing with information on complications related with the presence of ST in molar and premolar area. We also added to our review studies providing with classic ST classifications in premolar and molar area. Results: We found 29 cases of ST, and we freely illustrated them with 84 figures. We separated our pictorial review in: 1) unilateral ST in the mandible, 2) unilateral ST in the maxilla, 3) unilateral undersized ST, 4) bilateral ST, 5) ST with additional features, and 6) cases with major hyperdontia. Conclusions: we build up the classification matrix for premolar and molar ST with 11 descriptors and 50 boxes. The descriptors were: 1) location if the ST crown in axial view, 2) vertical location of the cusp tip in relation with closest erupted tooth in coronal view, 3) shape, 4) distribution, 5) Position (in relation to normal tooth eruption) in sagittal view, 6) State of eruption of the ST in the sagittal view, 7) Follicle size measurement in sagittal view, 8) External root resorption of adjacent teeth by ST and its location in relation to the long axis of the involved tooth, 9) Internal resorption of ST, 10) Adjacent tooth complication, and 11) Damage to surrounding structures if ST removal. The open access figures from the literature illustrated 11 boxes. With our pictorial review we were able to illustrate 45 out of 50 boxes, and freely provide the readership with the most complete description of ST in premolar and molar area on CBCT than in previously published studies.
    Мета: скласти описову класифікацію надкомплектних зубів (НКЗ) в ділянці премолярів та молярів для використання в описі конусно-променевих комп’ютерних томограм (КПКТ). Метою також є поширення значної кількості зображень КПКТ за моделлю відкритого доступу. Матеріали та методи: Для складання огляду ми провели пошук безкоштовних для перегляду повних статей на PubMed з інформацією про: 1)  КПКТ НКЗ у ділянці премолярів та молярів; 2) Ускладнення, пов’язані з наявністю НКЗ в ділянці молярів та премолярів. До огляду також були додані класифікації НКЗ в ділянці премолярів і молярів, представлені у інших дослідженнях. Результати: Нами було знайдено 29 клінічних випадків НКЗ, які ми проілюстрували 84-ма малюнками. Ми розділили наш ілюстративний огляд на: 1) Однобічні НКЗ на нижній щелепі; 2) Однобічні НКЗ на верхній щелепі; 3) Однобічні мікродонтичні НКЗ; 4) Двобічні НКЗ; 5) НКЗ з додатковими особливостями; 6) Випадки значної гіпердонтії. Висновки: Створено класифікаційну матрицю для НКЗ в ділянці премолярів і молярів з 11 дескрипторами та 50 блоками. Дескрипторами були: 1) розташування коронки НКЗ в аксіальній проєкції, 2) вертикальне розташування вершини горбка у відношенні до найближчого прорізаного зуба в корональній проєкції, 3) форма, 4) розподіл, 5) положення (у відношенні до положення нормально прорізаного зуба) в сагітальній проєкції, 6) Стан прорізування НКЗ в сагітальній проєкції, 7) Розмір фолікула в сагітальній проєкції, 8) Зовнішня резорбція коренів сусідніх зубів, спричинена НКЗ та його розташуванням у відношенні до довгої осі ураженого зуба, 9) внутрішня резорбція НКЗ, 10) ускладнення у сусідніх зубах, спричинені наявністю НКЗ, 11) ушкодження навколишніх анатомічних структур внаслідок видалення НКЗ. Малюнками з літератури, що знаходилася у відкритому доступі, було проілюстровано 11 блоків. У нашому ілюстративному огляді нам вдалося проілюструвати 45 з 50 блоків, і надати читачам вільний доступ до більш повного опису КПКТ НКЗ в ділянці премолярів та молярів, ніж у раніше опублікованих дослідженнях.
    Źródło:
    Nemesis. Negative Effects in Medical Sciences Oral and Maxillofacial Surgery; 2022, 21, 1; 1-58
    2593-3604
    Pojawia się w:
    Nemesis. Negative Effects in Medical Sciences Oral and Maxillofacial Surgery
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-7 z 7

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