Unilateral scissors bite treated with a removable plate that incorporates a Ti-Ni wire

2013 ◽  
Vol 14 (1) ◽  
pp. e222-e226 ◽  
Author(s):  
Hiroko Ohmori ◽  
Takashi Ono
Keyword(s):  
Author(s):  
Жанна Владимировна Вечеркина ◽  
Наталия Владимировна Чиркова ◽  
Михаил Анатольевич Крючков ◽  
Виктор Сергеевич Калиниченко

Развитие технологий, основанных на использовании низкотоксичных материалов, позволит в скором будущем начать их применение в медицине. Применение наночастиц серебра, меди, кремния, цинка, титана, кобальта в качестве модифицирующей добавки позволит оказать активное влияние на структуру исходных материалов и изменение их свойств, а именно улучшение физико-механических, физико-химических и токсико-гигиенических свойств материалов. Наноразмерные частицы кремния, введенные в фиксирующие стоматологические материалы, приводят к улучшению физико-химических, физико-механических свойств кристаллизующихся материалов, а малая теплопроводность кремния может увеличить его рабочее время и снизить выделение тепла при реакции кристаллизации. Так как от этих характеристик зависит объем манипуляций, при фиксации ортопедических конструкций на опорных зубах целесообразно было бы привести рабочее время твердения к чистому времени твердения, что позволит увеличить объем манипуляций приготовленной массой без ухудшения ее свойств. Разработка высокопрочных, биосовместимых, высокотехнологичных нанопластмасс для базисов съемных пластиночных протезов является актуальной проблемой повышения качества жизни пациентов. Модификация наноразмерными частицами серебра, кремния акрилового полимера позволит улучшить такие физико-механические свойства, как ударную вязкость, прочность, температуростойкость, барьерные свойства, уменьшить усадку полимера на этапе полимеризации, в отличие от уже известных отечественных и дорогостоящих импортных полимеров. Наноразмерные частицы кремния, серебра являются сокатализаторами метилметакрилата, влияющими на уменьшение количества остаточного мономера после процесса полимеризации, тем самым повышая санитарно-химические и токсико-гигиенические характеристики полимера. Все вышеизложенное позволило сформулировать цель исследований по наноструктурированным материалам под руководством профессора …посвящается памяти профессора, д.м.н. Каливраджияна Э.С. The development of technologies based on the use of low-toxic materials will make it possible to begin their application in medicine in the near future. The use of nanoparticles of silver, copper, silicon, zinc, titanium, cobalt as a modifying additive will make it possible to actively influence the structure of the starting materials and change their properties, namely, improve the physicomechanical, physicochemical and toxicohygienic properties of materials. Nanosized silicon particles introduced into fixing dental materials lead to an improvement in the physicochemical, physicomechanical properties of crystallizing materials, and the low thermal conductivity of silicon can increase its working time and reduce heat generation during the crystallization reaction. Since the volume of manipulations depends on these characteristics, when fixing orthopedic structures on abutment teeth, it would be advisable to bring the working time of hardening to a pure hardening time, which will increase the volume of manipulations with the prepared mass without deteriorating its properties. The development of high-strength, biocompatible, high-tech nanoplastics for the bases of removable plate prostheses is an urgent problem to improve the quality of life of patients. Modification of acrylic polymer with nano-sized particles of silver and silicon will improve such physical and mechanical properties as impact strength, strength, temperature resistance, barrier properties, and reduce polymer shrinkage at the stage of polymerization, in contrast to the already known domestic and expensive imported polymers. Nanosized particles of silicon, silver are cocatalysts of methyl methacrylate, affecting the reduction of the amount of residual monomer after the polymerization process, thereby increasing the sanitary-chemical and toxic-hygienic characteristics of the polymer. All of the above made it possible to formulate the goal of research on nanostructured materials under the guidance of the professor …dedicated to the memory of the professor, d.m.s. Kalivrajiyan E.S.


Author(s):  
Andrey SEVBITOV ◽  
◽  
Aleksey DOROFEEV ◽  
Sergey MIRONOV ◽  
Samer AL-KHOURY ◽  
...  

Despite innovations in orthopedic dentistry, removable dentures belong to the most popular orthopedic care category. Removable dentures are combined stimuli that affect the mucous membrane and neuro-receptor apparatus. Acrylic plastic prostheses, widely used in prosthetic dentistry, have a negative side mechanical, chemical-toxic, sensitizing, and thermal insulating effect on oral tissue and prosthetic impression area. This is often complicated by a violation of the biocenosis of the oral cavity, the growth of pathogenic microflora that releases toxins, especially an increase in the number of yeast colonies that irritate the oral mucosa and prosthetic stomatitis. It was observed 100 patients with oral candidiasis of various age groups from 45 to 65 years. Of these, 60 patients with removable plate prostheses; 40 patients with partially removable prostheses. Chronic forms of candidiasis were diagnosed in 40 patients and with exacerbation of chronic forms of candidiasis in 60 people. The number of untreated carious cavities and poor hygienic condition of the oral cavity directly affects the severity of candidiasis. Acute forms of candidiasis were observed mainly in patients with high DMF and PMA indices. The severity of candidiasis depends on the degree and duration of wearing dentures and hygienic conditions - the most severe forms of invasive candidiasis were observed in the presence of removable plate prostheses, the complete absence of teeth, and the use of a prosthesis for more than 10-15 years. A combined lesion of the oral mucosa and the red border of the lips was observed mainly in patients older than 60 years. The presence of candidiasis in the oral cavity in patients with removable plate prostheses leads to a statistically significant change in the indicators of local immunity of the oral cavity: an increase in the concentration of serum IgG and IgA and the values of the coefficient of the balance of local immunity factors.


Author(s):  
N.C. Bock ◽  
H. Klewitz ◽  
H. Hudel ◽  
S. Ruf
Keyword(s):  

2020 ◽  
Vol 4 (1) ◽  
pp. 352
Author(s):  
I. A. Nikolishin ◽  
E. V. Nikolishinа ◽  
V. M. Dvornik ◽  
O. V. Dobrovolsky ◽  
O. V. Dobrovolska
Keyword(s):  

2020 ◽  
Vol 16 (3) ◽  
pp. 139-146
Author(s):  
Aleksey Zotov ◽  
Anna Podoprigora ◽  
Yuliya Komarova ◽  
Edvard Kalivradzhiyan ◽  
Ilya Stepanov ◽  
...  

Subject. Today, nanoparticles of chemical elements that make up the body are of particular interest. Such nanomaterials usually do not cause allergic reactions, they can potentially be broken down and removed from it, and, for example, drugs can be placed in the pores of these materials. At the Department of Prosthetic Dentistry of V.G. N.N. Burdenko together with Voronezh State University developed a polymer modified with nanosized silver particles, which was successfully tested on patients in the manufacture of removable plate prostheses. However, there is no data on the effect of this polymer in patients with complex jaw pathology in combination with somatic pathology, in which visible changes occur in the oral cavity. Goal ― to consider the problem of prevention of toxic-allergic reactions when using complex-jaw prostheses and devices. To study the state of the oral microbiocenosis and the cytological characteristics of the mucous membrane in patients with apparatus bases made of a polymer modified with nanoscale silver. Materials and methods. 80 people were examined and 60 patients were treated for complete absence of teeth with various degrees of atrophy according to A.I.Doynikov (1967) I, II, III, IV, V, with a uniform quantitative distribution in groups. Methodology. 80 people were examined and 60 patients were treated for complete absence of teeth with various degrees of atrophy according to A.I.Doynikov (1967) I, II, III, IV, V, with a uniform quantitative distribution in groups. Results. The dynamics of the inflammatory processes of the mucous membrane of the prosthetic bed under the bases of removable jaw devices made by the known method and with bases from modified materials was studied. A complex of personalized prevention of complications associated with the action of basic polymers has been developed. Conclusion. Obtained by analyzing the results of the study, it was possible to create, on the basis of the use of modified acrylic polymer as the material of the bases of removable prostheses and devices, a program for individual prevention of the inflammatory complications induced by them from the mucosa of the prosthetic bed, the efficiency level of which is at least 60 %. This predisposes to recommendations for the further implementation of the modified nanosilver acrylic polymer in practical dentistry.


Author(s):  
Жанна Владимировна Вечеркина ◽  
Наталья Александровна Шалимова ◽  
Наталия Владимировна Чиркова ◽  
Елена Анатольевна Андреева ◽  
Марина Николаевна Бобешко

Увеличивающаяся тенденция нуждаемости пациентов использования несъемных, съемных зубных протезов, ортодонтических и челюстно-лицевых апппаратов, наблюдающаяся в последние годы, сопряжена с многими проблемами. Использующиеся в практике ортопедической стоматологии зубные протезы и аппараты оказывают побочное действие на слизистую оболочку полости рта (механическое, химико-токсическое, сенсибилизирующее), что приводит к нарушению биоценоза, чрезмерному росту патогенных микроорганизмов и увеличению числа дрожжевых колоний. Установлено также, что при использовании адгезивных препаратов для улучшения фиксации съемных протезов статистически достоверно увеличивается число дрожжевых колоний при количественном посеве по сравнению с контрольной группой пациентов. Еще более сложная ситуация наблюдается у пациентов, уже имеющих хроническое нарушение соотношения нормальной и условно - патогенной микробиоты и нуждающихся в протезировании съемными пластиночными протезами. Эти пациенты, как правило, имеют неудовлетворительную гигиену полости рта и тяжелую сопутствующую патологию, чаще всего сахарный диабет или дисбактериоз ЖКТ. В настоящее время получены убедительные данные о важной роли иммунных нарушений в патогенезе развития кандидоинфекции и антифунгальной резистентности. В частности, дисфункции клеточного звена иммунной системы, что способствует хроническому, рецидивирующему и зачастую торпидному к терапии течению заболевания. Это, в свою очередь, требует выполнения научных исследований в направлении коррекции состояния микрофлоры ротовой полости пользующихся ортопедическими конструкциями. Данная обзорная работа посвящена актуальным на сегодняшний день вопросам применения пре-, пробиотических культур и синбиотиков в комплексном лечении больных с дисбиотическим изменением полости рта, пользующихся ортодонтическими конструкциями, лечебно-диагностическими аппаратами. Целью работы стал всесторонний анализ проблемы целесообразности и эффективности использования вышеназванных средств с точки зрения этиопатогенеза дисбиоза в полости рта The increasing trend of patients ' need to use non-removable, removable dentures, orthodontic and maxillofacial devices, observed in recent years, is associated with many problems. Dental prostheses and devices used in the practice of orthopedic dentistry have a side effect on the oral mucosa (mechanical, chemical-toxic, sensitizing), which leads to a violation of the biocenosis, excessive growth of pathogenic microorganisms and an increase in the number of yeast colonies. It was also found that the use of adhesive preparations to improve the fixation of removable prostheses statistically significantly increases the number of yeast colonies during quantitative seeding compared to the control group of patients. An even more difficult situation is observed in patients who already have a chronic violation of the relationship between normal and opportunistic microbiota and need prosthetics with removable plate prostheses. These patients usually have poor oral hygiene and severe comorbidities, most often diabetes mellitus or gastrointestinal dysbiosis. Currently, there is strong evidence of the important role of immune disorders in the pathogenesis of Candida infection and antifungal resistance. In particular, dysfunction of the cellular link of the immune system, which contributes to the chronic, recurrent and often torpid to therapy course of the disease. This, in turn, requires scientific research in the direction of correlation of the state of the oral microflora using orthopedic structures. This review is devoted to current issues of the use of pre - probiotic cultures and synbiotics in the complex treatment of patients with dysbiotic changes in the oral cavity, using orthodontic structures, medical and diagnostic devices. The aim of the work was a comprehensive analysis of the problem of expediency and effectiveness of the use of the above-mentioned means, from the point of view of the eiopathogenesis of dysbiosis in the oral cavity


Author(s):  
Maryam Baharlooei ◽  
Mehdi Rafiei ◽  
Nasim Esnaashari ◽  
Ayda Rajaei

Introduction: Since orthodontic removable appliances might be infected with fungi and bacteria, they need to be cleaned using natural disinfectants and chemicals. This study aimed to compare the clinical impact of thyme essence and Fluconazole solution on the amount of Candida albicans colonies and Streptococcus mutans accumulated on the removable appliances in orthodontic patients. Materials & Methods: In this descriptive-analytical study, 21 patients were selected who used the wear Hawley’s retainer for 24-hours. Patients were divided into three groups of seven. One group first washed the plaque with soap and water and then spray thyme essence all over it at a 5-centimeter distance (4 times on each side). In the other group, as before, the plaque was washed and from the same distance as before, the fluconazole solution (10 mg/ml) was sprayed on all surfaces 4 times. In the control group, the retainer was washed every night only with soap and water. After one month, the retainers were delivered form patients. The two samples were then separated from the Kami platelets and sent to a laboratory for microbial culture. Data were analyzed by Mann-Whitney, T-test (α = 0.05). Results: The use of thyme essence increases the mean area of Candida albicans inhibition, which was significantly higher than that in the control group (p value = 0.03). The effect of Fluconazole solution on this mean area )Candida albicans inhibition zone( was not significant compared to that observed in the control group (p value = 0.5). In the group in which thyme essence was used, the mean area of Streptococcus mutans inhibition, which was significantly higher than that in the control group (p value = 0.05). When Fluconazole solution was used, the mean area of Streptococcus mutans inhibition, was not significant compared to that observed in the control group (p value = 0.071). Conclusion: Compared to Fluconazole solution, thyme essence functions more effectively in increasing Candida and Streptococcus mutans inhibition zones.


2004 ◽  
Author(s):  
Anastasia V. Ryzhkova ◽  
Sergey S. Ulyanov ◽  
Alexander V. Lepilin ◽  
Natalia A. Kharish

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