Sialolithiasis is one of the most common and extensively obstructive disorders of the major salivary glands. Here, we report 3 cases of sialolithiasis in the submandibular salivary gland showing symptomatic similarities to other dental and non-dental disorders of the maxillofacial area. How the various clinical features of this condition and findings on 3D-CT may lead to a misdiagnosis are also discussed. In the first case, that of a 45-year-old woman, a final diagnosis of a non-radiopaque submandibular sialolith allowed the initially indicated surgical extraction of a malerupted and semi-impacted right mandibular 3rd molar to be abandoned. In the second case, that of a 57-year-old woman, radiographic findings had previously led to a diagnosis of ameloblastoma, which had masked the presence of sialolithiasis for at least 9 years, despite the radiopacity of the sialolith. Meanwhile, exacerbation of sialolithiasis was mistaken for lymphadenitis. In the third case, that of a 40-year-old woman, sialolithiasis was diagnosed in a timely manner, despite the fact that the dentists' attention had initially been focused on odontopathological symptoms. One feature of the present report is the concurrence of dental and non-dental pathologies affecting the same sextant as the sialolithiasis. Despite recent advances in imaging technology and diagnostics, cases of sialolithiasis being misdiagnosed continue to occur in clinical practice.
The aim: was to analyze the scientific and pedagogical heritage of N.I. Pirogov, which remains relevant in the modern medical and pedagogical community, and opens new
little-known pages of the scientific, pedagogical and medical activity of the doctor.
Materials and methods: The authors conducted a thorough analysis of scientific publications by N.I. Pirogov and papers devoted to his activity as a doctor, educator and
researcher using analytical, comparative and bibliosemantic methods.
Conclusions: The study suggested the new chronological boundaries in the scientific and educational heritage of N.I. Pirogov. The developed periodization accurately reflects
the beginning of his scientific and pedagogical path in medical education, specifically refers to the period of his work in Germany as a supervisor of professorial candidates
from 1862 to 1866, and the period of his participation in Sevastopol (Crimean) campaign and in the Franco-Prussian War, which was very important for the development of
military field surgery.
The aim of the research is to study the physical and mechanical parameters of the bases in removable laminar dentures after modification of their surface.
Materials and methods: the studied samples were divided into two groups (group I – acrylic plastics, and group II – acrylic plastics with fullerene С60 nanocoating), 50 samples in each group. The coefficients of water absorption, water solubility, microhardness and deformation characteristics of materials were studied.
Results and conclusions: The material covered with fullerene С60 has a lower coefficient of water absorption and water solubility, which amounted to 0.55% and 0.23%
respectively, from the initial weight of samples, as compared with acrylic plastics without coating (0.71% and 034%, respectively). The strength parameters of samples of group ІІ were higher by 13.5% as compared to group І. The given results of water absorption and water-solubility show that acrylic plastics with fullerene С60 molecules coating has a lower coefficient of water absorption and water solubility, in comparison with acrylic plastics without coating. This indicates a higher degree of resistance to biodegradation of the modified surface material, in turn reducing the washing-out of residual monomer from the denture, which directly improves the strength parameters of the acrylic plastics and can prevent the development of denture stomatitis.
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