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<article xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:ali="http://www.niso.org/schemas/ali/1.0/" article-type="research-article" dtd-version="1.2" xml:lang="en"><front><journal-meta><journal-id journal-id-type="publisher-id">Russian Journal of Dentistry</journal-id><journal-title-group><journal-title xml:lang="en">Russian Journal of Dentistry</journal-title><trans-title-group xml:lang="ru"><trans-title>Российский стоматологический журнал</trans-title></trans-title-group></journal-title-group><issn publication-format="print">1728-2802</issn><issn publication-format="electronic">2413-2934</issn><publisher><publisher-name xml:lang="en">Eco-Vector</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">686560</article-id><article-id pub-id-type="doi">10.17816/dent686560</article-id><article-id pub-id-type="edn">OQCRSU</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>Original Study Articles</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>Оригинальные исследования</subject></subj-group><subj-group subj-group-type="article-type"><subject>Research Article</subject></subj-group></article-categories><title-group><article-title xml:lang="en">Clinical and economic justification for managerial decisions on replacing corroded dental instruments</article-title><trans-title-group xml:lang="ru"><trans-title>Клинико-экономическое обоснование управленческих решений о замене стоматологического инструментария, подверженного коррозии</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0004-3144-2781</contrib-id><contrib-id contrib-id-type="spin">7994-8670</contrib-id><name-alternatives><name xml:lang="en"><surname>Kerasov</surname><given-names>Stefan N.</given-names></name><name xml:lang="ru"><surname>Керасов</surname><given-names>Стефан Николаевич</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>stenley007@mail.ru</email><xref ref-type="aff" rid="aff3"/><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-2569-1146</contrib-id><contrib-id contrib-id-type="spin">1012-2883</contrib-id><name-alternatives><name xml:lang="en"><surname>Kostyrin</surname><given-names>Evgeny V.</given-names></name><name xml:lang="ru"><surname>Костырин</surname><given-names>Евгений Вячеславович</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Dr. Sci. (Economics), Associate Professor</p></bio><bio xml:lang="ru"><p>д-р экон. наук, доцент</p></bio><email>mauntain76@mail.ru</email><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-3372-5775</contrib-id><contrib-id contrib-id-type="spin">3814-7044</contrib-id><name-alternatives><name xml:lang="en"><surname>Galstyan</surname><given-names>Mariam S.</given-names></name><name xml:lang="ru"><surname>Галстян</surname><given-names>Мариам Серёжевна</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>galstyan_mariam@mail.ru</email><xref ref-type="aff" rid="aff3"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0005-7605-5715</contrib-id><contrib-id contrib-id-type="spin">4682-1730</contrib-id><name-alternatives><name xml:lang="en"><surname>Arutyunov</surname><given-names>Sergey A.</given-names></name><name xml:lang="ru"><surname>Арутюнов</surname><given-names>Сергей Анатольевич</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>sa.arutyunov@rambler.ru</email><xref ref-type="aff" rid="aff3"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-1710-3965</contrib-id><contrib-id contrib-id-type="spin">8117-0070</contrib-id><name-alternatives><name xml:lang="en"><surname>Bazhin</surname><given-names>Pavel M.</given-names></name><name xml:lang="ru"><surname>Бажин</surname><given-names>Павел Михайлович</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Dr. Sci. (Engineering), Professor</p></bio><bio xml:lang="ru"><p>д-р техн. наук, профессор</p></bio><email>bazhin@ism.ac.ru</email><xref ref-type="aff" rid="aff4"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">Russian University of Medicine</institution></aff><aff><institution xml:lang="ru">Российский университет медицины</institution></aff><aff><institution xml:lang="kk"></institution></aff><aff><institution xml:lang="pt"></institution></aff><aff><institution xml:lang="zh"></institution></aff></aff-alternatives><aff-alternatives id="aff2"><aff><institution xml:lang="en">Bauman Moscow State Technical University</institution></aff><aff><institution xml:lang="ru">Московский государственный технический университет имени Н.Э. Баумана (национальный исследовательский университет)</institution></aff></aff-alternatives><aff-alternatives id="aff3"><aff><institution xml:lang="en">Russian University of Medicine</institution></aff><aff><institution xml:lang="ru">Российский университет медицины</institution></aff></aff-alternatives><aff-alternatives id="aff4"><aff><institution xml:lang="en">Peoples’ Friendship University of Russia</institution></aff><aff><institution xml:lang="ru">Российский университет дружбы народов имени Патриса Лумумбы</institution></aff></aff-alternatives><pub-date date-type="preprint" iso-8601-date="2025-07-30" publication-format="electronic"><day>30</day><month>07</month><year>2025</year></pub-date><pub-date date-type="pub" iso-8601-date="2025-08-29" publication-format="electronic"><day>29</day><month>08</month><year>2025</year></pub-date><volume>29</volume><issue>4</issue><issue-title xml:lang="en"/><issue-title xml:lang="ru"/><fpage>368</fpage><lpage>375</lpage><history><date date-type="received" iso-8601-date="2025-07-02"><day>02</day><month>07</month><year>2025</year></date><date date-type="accepted" iso-8601-date="2025-07-07"><day>07</day><month>07</month><year>2025</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2025, Eco-Vector</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2025, Эко-Вектор</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="en">Eco-Vector</copyright-holder><copyright-holder xml:lang="ru">Эко-Вектор</copyright-holder><ali:free_to_read xmlns:ali="http://www.niso.org/schemas/ali/1.0/" start_date="2028-08-29"/><license><ali:license_ref xmlns:ali="http://www.niso.org/schemas/ali/1.0/">https://creativecommons.org/licenses/by-nc-nd/4.0/</ali:license_ref></license></permissions><self-uri xlink:href="https://rjdentistry.com/1728-2802/article/view/686560">https://rjdentistry.com/1728-2802/article/view/686560</self-uri><abstract xml:lang="en"><p><bold>BACKGROUND:</bold> Corrosion of dental instruments reduces their functionality and salvage value, prompting the need for timely managerial decisions regarding replacement or restoration. In the absence of an objective framework for assessing the clinical and economic viability of these options, the risk of inefficient spending increases.</p> <p><bold>AIM:</bold> To provide a clinical and economic rationale for restoring corroded dental instruments rather than disposing of them.</p> <p><bold>METHODS:</bold> A mathematical model was developed based on a formula incorporating the costs of restoration, disposal, depreciation, and the extended service life of instruments following restoration. A Python-based software algorithm was implemented to visualize outcomes using a clinical-economic feasibility matrix. Scenario analyses were conducted across varying cost parameters and service life extensions.</p> <p><bold>RESULTS:</bold> The developed software determines the economic feasibility of instrument restoration under specific conditions. For example, if disposal costs are 10%, restoration costs are 80%, and depreciation is estimated at 15% of the instrument’s original value, restoration is deemed economically viable if the post-restoration service life increases by at least 76% of the standard operational life. The algorithm also identifies threshold cost values favoring restoration over replacement.</p> <p><bold>CONCLUSION:</bold> An innovative decision-making model was developed, incorporating both mathematical and software algorithms to assess the feasibility of restoring dental instruments. Findings indicate that, when a significant extension in service life is achievable, restoration is more cost-effective than purchasing new instruments. The Python programming environment provides a universal platform for informed decision-making in dental practice.</p></abstract><trans-abstract xml:lang="ru"><p><bold>Обоснование.</bold> Коррозия стоматологического инструментария снижает его функциональность и ликвидную стоимость. Возникает необходимость принятия своевременного управленческого решения о замене или реставрации инструмента. При отсутствии объективной системы оценки клинико-экономической целесообразности оптимального выбора возрастает риск неэффективных расходов.</p> <p><bold>Цель.</bold> Клинико-экономическое обоснование целесообразности реставрации корродированного стоматологического инструментария вместо его утилизации.</p> <p><bold>Методы.</bold> На основе формулы построена математическая модель, учитывающая затраты на реставрацию, утилизацию и снижение ликвидной стоимости инструментария, а также прирост срока его полезного использования после реставрации. Реализован программный алгоритм в среде Python с визуализацией данных в форме матрицы клинико-экономической целесообразности. Проведён анализ сценариев с различными параметрами затрат и сроков службы.</p> <p><bold>Результаты.</bold> Разработанная программа позволяет определить экономическую целесообразность реставрации инструментария для заданных параметров. Если затраты на утилизацию инструмента составляют 10%, затраты на реставрацию инструмента равны 80%, а снижение ликвидной стоимости оценивается в размере 15% его первоначальной стоимости, то реставрация инструмента целесообразна при увеличении срока службы не менее чем на 76% от нормативного срока использования. Программа также определяет предельные значения затрат, при которых реставрация предпочтительнее покупки нового инструмента.</p> <p><bold>Заключение.</bold> Создана инновационная модель управленческого решения, включающая математический и программный алгоритмы для точной оценки целесообразности реставрации стоматологического инструментария. Результаты исследования подтверждают, что при существенном приросте срока службы реставрация экономически более выгодна по сравнению с приобретением нового инструмента. Программная среда Python представляет собой универсальный критерий для принятия обоснованных решений в стоматологической практике.</p></trans-abstract><kwd-group xml:lang="en"><kwd>instrument restoration</kwd><kwd>chemical disinfection</kwd><kwd>electrospark alloying</kwd><kwd>SHS electrodes</kwd><kwd>salvage value</kwd><kwd>optimality criterion</kwd><kwd>service life</kwd><kwd>cost-effectiveness</kwd><kwd>threshold value</kwd><kwd>critical parameter</kwd><kwd>mathematical model</kwd><kwd>Python</kwd><kwd>clinical and economic feasibility</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>реставрация</kwd><kwd>химическая дезинфекция</kwd><kwd>электроискровое легирование</kwd><kwd>СВС-электроды</kwd><kwd>ликвидная стоимость</kwd><kwd>критерий оптимальности</kwd><kwd>срок использования</kwd><kwd>экономическая целесообразность</kwd><kwd>пороговое значение</kwd><kwd>критический параметр</kwd><kwd>математическая модель</kwd><kwd>Python</kwd><kwd>клинико-экономическая целесообразность</kwd></kwd-group><funding-group/></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>Ewan VC, Sails AD, Walls AW, et al. 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