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 <front>
  <journal-meta>
   <journal-id journal-id-type="publisher-id">Actual problems in dentistry</journal-id>
   <journal-title-group>
    <journal-title xml:lang="en">Actual problems in dentistry</journal-title>
    <trans-title-group xml:lang="ru">
     <trans-title>Проблемы стоматологии</trans-title>
    </trans-title-group>
   </journal-title-group>
   <issn publication-format="print">2077-7566</issn>
   <issn publication-format="online">2412-9461</issn>
  </journal-meta>
  <article-meta>
   <article-id pub-id-type="publisher-id">75830</article-id>
   <article-id pub-id-type="doi">10.18481/2077-7566-2024-20-1-170-174</article-id>
   <article-categories>
    <subj-group subj-group-type="toc-heading" xml:lang="ru">
     <subject>ОРТОПЕДИЧЕСКАЯ И ЦИФРОВАЯ СТОМАТОЛОГИЯ</subject>
    </subj-group>
    <subj-group subj-group-type="toc-heading" xml:lang="en">
     <subject>ORTHOPEDIC AND DIGITAL DENTISTRY</subject>
    </subj-group>
    <subj-group>
     <subject>ОРТОПЕДИЧЕСКАЯ И ЦИФРОВАЯ СТОМАТОЛОГИЯ</subject>
    </subj-group>
   </article-categories>
   <title-group>
    <article-title xml:lang="en">FINITE ELEMENT STUDY EVALUSTION OF GLASS FIBER REINFORCED FIXED PROSTHESES MADE OF ACRYLIC AND BIS-ACRYLIC RESIN MATERIALS</article-title>
    <trans-title-group xml:lang="ru">
     <trans-title>ИЗУЧЕНИЕ МЕТОДОМ КОНЕЧНЫХ ЭЛЕМЕНТОВ ЭФФЕКТА АРМИРОВАНИЯ СТЕКЛОВОЛОКНОМ ПРОВИЗОРНЫХ НЕСЪЕМНЫХ ПРОТЕЗОВ ИЗ АКРИЛОВОЙ И БИС-АКРИЛОВОЙ ПЛАСТМАССЫ</trans-title>
    </trans-title-group>
   </title-group>
   <contrib-group content-type="authors">
    <contrib contrib-type="author">
     <name-alternatives>
      <name xml:lang="ru">
       <surname>Петрикас</surname>
       <given-names>Олег Арнольдович</given-names>
      </name>
      <name xml:lang="en">
       <surname>Petrikas</surname>
       <given-names>Oleg Arnoldovich</given-names>
      </name>
     </name-alternatives>
     <email>opetrikas@mail.ru</email>
     <bio xml:lang="ru">
      <p>доктор медицинских наук;</p>
     </bio>
     <bio xml:lang="en">
      <p>doctor of medical sciences;</p>
     </bio>
     <xref ref-type="aff" rid="aff-1"/>
    </contrib>
    <contrib contrib-type="author">
     <name-alternatives>
      <name xml:lang="ru">
       <surname>Трапезников</surname>
       <given-names>Дмитрий Валерьевич</given-names>
      </name>
      <name xml:lang="en">
       <surname>Trapeznikov</surname>
       <given-names>Dmitriy Valerievich</given-names>
      </name>
     </name-alternatives>
     <email>trapeznikovdv@mail.ru</email>
     <xref ref-type="aff" rid="aff-2"/>
    </contrib>
    <contrib contrib-type="author">
     <name-alternatives>
      <name xml:lang="ru">
       <surname>Костин</surname>
       <given-names>Игорь Олегович</given-names>
      </name>
      <name xml:lang="en">
       <surname>Kostin</surname>
       <given-names>Igor Olegovich</given-names>
      </name>
     </name-alternatives>
     <email>stomatologistic@mail.ru</email>
     <bio xml:lang="ru">
      <p>кандидат медицинских наук;</p>
     </bio>
     <bio xml:lang="en">
      <p>candidate of medical sciences;</p>
     </bio>
     <xref ref-type="aff" rid="aff-3"/>
    </contrib>
    <contrib contrib-type="author">
     <name-alternatives>
      <name xml:lang="ru">
       <surname>Буланов</surname>
       <given-names>Виталий Иванович</given-names>
      </name>
      <name xml:lang="en">
       <surname>Bulanov</surname>
       <given-names>Vitaliy Ivanovich</given-names>
      </name>
     </name-alternatives>
     <email>B220840@mail.ru</email>
     <bio xml:lang="ru">
      <p>кандидат медицинских наук;</p>
     </bio>
     <bio xml:lang="en">
      <p>candidate of medical sciences;</p>
     </bio>
     <xref ref-type="aff" rid="aff-4"/>
    </contrib>
   </contrib-group>
   <aff-alternatives id="aff-1">
    <aff>
     <institution xml:lang="ru">Тверской государственный медицинский университет</institution>
     <city>Тверь</city>
     <country>Россия</country>
    </aff>
    <aff>
     <institution xml:lang="en">Tver State Medical University</institution>
     <city>Tver</city>
     <country>Russian Federation</country>
    </aff>
   </aff-alternatives>
   <aff-alternatives id="aff-2">
    <aff>
     <institution xml:lang="ru">Тверской государственный медицинский университет</institution>
     <city>Тверь</city>
     <country>Россия</country>
    </aff>
    <aff>
     <institution xml:lang="en">Tver State Medical University</institution>
     <city>Tver</city>
     <country>Russian Federation</country>
    </aff>
   </aff-alternatives>
   <aff-alternatives id="aff-3">
    <aff>
     <institution xml:lang="ru">Тверской государственный медицинский университет</institution>
     <city>Тверь</city>
     <country>Россия</country>
    </aff>
    <aff>
     <institution xml:lang="en">Tver State Medical University</institution>
     <city>Tver</city>
     <country>Russian Federation</country>
    </aff>
   </aff-alternatives>
   <aff-alternatives id="aff-4">
    <aff>
     <institution xml:lang="ru">Тверской государственный медицинский университет</institution>
     <city>Тверь</city>
     <country>Россия</country>
    </aff>
    <aff>
     <institution xml:lang="en">Tver State Medical University</institution>
     <city>Tver</city>
     <country>Russian Federation</country>
    </aff>
   </aff-alternatives>
   <pub-date publication-format="print" date-type="pub" iso-8601-date="2024-05-02T22:17:09+03:00">
    <day>02</day>
    <month>05</month>
    <year>2024</year>
   </pub-date>
   <pub-date publication-format="electronic" date-type="pub" iso-8601-date="2024-05-02T22:17:09+03:00">
    <day>02</day>
    <month>05</month>
    <year>2024</year>
   </pub-date>
   <volume>20</volume>
   <issue>1</issue>
   <fpage>170</fpage>
   <lpage>174</lpage>
   <history>
    <date date-type="received" iso-8601-date="2024-03-28T00:00:00+03:00">
     <day>28</day>
     <month>03</month>
     <year>2024</year>
    </date>
   </history>
   <self-uri xlink:href="https://dental-press.ru/en/nauka/article/75830/view">https://dental-press.ru/en/nauka/article/75830/view</self-uri>
   <abstract xml:lang="ru">
    <p>Применение временных (провизорных) конструкций представляет собой неотъемлемый этап современного зубного протезирования. Признаваемой большинством специалистов проблемой провизорных протезов (ПП) является их использование в условиях длительной либо повышенной функциональной нагрузки в связи с возможностью их поломки. Разработка простого, не требующего специального оборудования способа усиления провизорных протезов непосредственно во время клинического приема является актуальной научно-практической задачей. &#13;
Цель. Изучить напряженно-деформированного состояния несъемных армированных и неармированных стекловолокном провизорных протезов различной протяженности из акриловой либо бис-акриловой композиционной пластмассы. &#13;
Методология. Для этого было разработано четыре конечно-элементные модели с воспроизведением свойств материалов протеза, твердых тканей зуба (модуль Юнга, коэффициент Пуассона, твердость). Каждая модель подвергалась вертикальной нагрузке в 100 н, приложенной к середине тела ПП. Были проведены расчеты в АРМ 3D Studio, контроль полученных результатов проводился в Ansys 12.2. Полученные результаты выводились на экран монитора, распечатывались и анализировались. &#13;
Результаты. Анализ картины распределения напряжений (КРН) для акрилового неармированного ПП с укороченным телом (модель 1) показал наибольшее напряжение (4,2–5,2 н/мм2) в области окклюзионной поверхности. КРН для акрилового неармированного ПП с удлиненным телом (модель 2) показала наибольшее напряжение (11,4–12,3 н/мм2) как в зоне оказания нагрузки, так и в пришеечных зонах коннектора, обращенных в сторону дефекта. КРН для акрилового армированного ПП с удлиненным телом (модель 3) показала наибольшее напряжение (10,5–12,0 н/мм2) в области расположения волоконной армирующей ленты в глубине ПП. КРН для бис-акрилового армированного ПП с удлиненным телом (модель 4) показала наибольшие напряжения (9,8–10,5 н/мм2) как в области расположения стекловолоконной армирующей ленты, так и на окклюзионной поверхности. &#13;
Выводы. Анализ напряженно-деформированного состояния ПП подтвердил целесообразность армирования стекловолоконной лентой при удлинении промежуточной части провизорного протеза из акриловой или бис-акриловой композиционной пластмассы.</p>
   </abstract>
   <trans-abstract xml:lang="en">
    <p>The use of interim (provisional) prostheses is an obligate stage of modern dental practice. The problem of provisional bridges recognized by most experts is their use under heavy occlusal stress due to the possibility of their fracture. The development of a simple method of reinforcing provisional of prostheses during a clinical appointment that does not require special equipment is an urgent scientific and practical task. &#13;
Objectives. The goal of this study was to evaluate the stress distribution in fiberglass reinforced and non-reinforced short-span and long-span provisional bridges according to different acrylic and bis-acrylic resin. &#13;
Methodology. For this purpose, four finite element models were developed to reproduce the properties of prosthetic materials and hard dental tissues (Young’s modulus, Poisson’s ratio, hardness). Each model was subjected to a vertical load of 100 N applied to the middle of the bridge. Calculations were carried out in APM 3D Studio, and the results obtained were monitored in Ansys 12.2. The results obtained were displayed on the monitor screen, printed and analyzed.&#13;
Results. Stress distribution pattern for an acrylic non-reinforced short-span bridge (model 1) showed the highest stress (4.2–5.2 n/mm2) in the area of the occlusal surface. &#13;
Stress distribution pattern for an acrylic non-reinforced long-span bridge (model 2) showed the highest stress (11.4–12.3 n/mm2) both in the load zone and in the cervical zones of the connector facing the defect.&#13;
Stress distribution pattern for acrylic reinforced long-span bridge (model 3) showed the highest stress (10.5–12.0 n/mm2) in the area where the fiber reinforcing tape is located deep in the bridge.&#13;
Stress distribution pattern for bis-acrylic reinforced long-span bridge (model 4) showed the highest stress (9.8–10.5 n/mm2) observed both in the area where the glass fiber reinforcing tape is located and on the occlusal surface.&#13;
Conclusion. Finite element analysis confirmed the feasibility of fiberglass reinforcement of long-span provisional bridges made of acrylic or bis-acrylic resin.</p>
   </trans-abstract>
   <kwd-group xml:lang="ru">
    <kwd>провизорный протез</kwd>
    <kwd>акрилаты</kwd>
    <kwd>бис-акрилаты</kwd>
    <kwd>метод конечных элементов</kwd>
    <kwd>картина распределения напряжений</kwd>
   </kwd-group>
   <kwd-group xml:lang="en">
    <kwd>provisional bridges</kwd>
    <kwd>acrylates</kwd>
    <kwd>bis-acrylates</kwd>
    <kwd>finite element method</kwd>
    <kwd>stress distribution pattern</kwd>
   </kwd-group>
  </article-meta>
 </front>
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