The Application of the Modified Method for the Production of Replacement Dentures to a Patient With Jaw Desomorphine Osteonecrosis

Митин, Н Е; Гуйтер, О. С.

doi:10.23888/hmj201863394-399

Cited by 3 publications

(1 citation statement)

References 6 publications

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“…[2,[4][5] В зависимости от их конструкции выделяют пластиночные и бюгельные (дуговые) конструкции. Их конструктивные особенности определяются прежде всего клинической ситуацией, расположением и протяженностью дефекта зубного ряда, состоянием слизистой оболочки пациента, а также широким рядом индивидуальных особенностей [6].…”

Section: актуальностьunclassified

Study of Architectonics of Mouth Cavity in Dental Patients

Kalinovskiy¹,

Севбитов²,

Kozhevnikova³

et al. 2023

НМJ

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INTRODUCTION: The issue of restoration of the architectonics of the palatine arch remains relevant both due to the widespread use of removable dentures of different design in everyday practice of dentists of private and governmental medical and prophylactic institutions of dental profile, and due to the development of modern techniques and approaches to the total rehabilitation of patients through use of non-replaceable structures with support on dental implants. All these interventions are associated with derangement of the anatomical structure of the front third of the palatine arch either in result of spanning of it with structural elements of dentures, or in result of reduction of bone tissue to achieve the required width for installation of dental implants. AIM: To study architectonics of the hard palate, alveolar process of the upper jaw and the volume of the moth cavity in patients with intact (sanitated) dentitions and with pathologies. MATERIALS AND METHODS: The study involved patients with intact dentitions and with dental pathologies. In the course of the work, morphometric parameters were studied, namely silicon keys taken from the models of the patients. Separation was performed perpendicular to the palatine seam along the teeth, and the degree of tilt was determined on millimeter paper. There were also studied lateral teleroentgenograms of patients obtained in the course of treatment. The volume of the oral cavity was evaluated by measuring the mean value of two height dimensions, two width dimensions, and the distance from the angle of the mandible to the middle of the chin by the method described in RU 2448646 C2 patent of 27/04/2012. RESULTS: The obtained results of morphometric studies in patients with healthy dentitions show variations in the mean angle of tilt of the hard palate in various sections 69 ± 1.2 degrees in male patients, 76 ± 2.4 in female patients, and the maximum angle of tilt of the hard palate in various sections 74 ± 5.2 degrees in male patients, 83 ± 4.4 in female patients. During the analysis of models in patients with secondary adentia, the data were obtained that permit to get an idea about the influence of atrophic processes of the bone-periodontal complex on changes in the architectonics of the oral cavity in general and in the morphometric parameters of the upper jaw in particular. The study of the data obtained in radiation diagnostics evidences the influence of atrophic processes on the parameters of the volume of the oral cavity of patients. CONCLUSIONS: The obtained results show the influence of atrophic processes on the parameters of the volume of the oral cavity of patients; thus, with increase in the number of missing teeth and increase in the volume of bone tissue lost in atrophic processes, and with its densification, the volume of the mouth cavity of the patient increases. All this produces a negative influence of the thickness of orthopedic structures, increases the period of adaptation of a patients to manufactured dentures; however, the loads exerted on the denture in chewing, can lead to a fracture of denture of sufficient thickness if it has construction errors.

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Section: актуальностьunclassified

Study of Architectonics of Mouth Cavity in Dental Patients

Kalinovskiy¹,

Севбитов²,

Kozhevnikova³

et al. 2023

НМJ

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Research of chewing efficiency in patients with extensive acquired defects of the upper jaw after resections of nasopharyngeal zone tumors and various terms of orthopedic rehabilitation

Guyter

Митин

Олейников

et al. 2019

Stomat.

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Хирургические операции по поводу онкологических заболеваний челюстно-лицевой области, в ходе которых производятся резекции верхней челюсти, влекут за собой неизбежное возникновение существенных постоперационных дефектов, которые способствуют инвалидизации пациентов. Важное место в современной стоматологии занимает ортопедическая реабилитация больных с дефектами и деформациями лица и челюстей при онкологических заболеваниях [1]. Изготовление полого обтурирующего протеза является методом выбора при данной патологии [2] и соответственно наиболее часто применяется для реконструкции зубочелюстной системы, полости и придаточных пазух носа после обширных оперативных вмеша-© Коллектив авторов, 2019 тельств. Возмещение дефектов такого рода с помощью челюстно-лицевого протезирования позволяет восстановить функции жевания, глотания, дыхания, разобщить полости рта и носа и предотвратить необратимые изменения в челюстно-лицевой области. Своевременное изготовление обтурирующих протезов и грамотный объективный анализ их эффективности способствуют решению и предотвращению множества проблем, влияющих на степень восстановления функций зубочелюстной системы и органов назофарингеальной области в целом, в свою очередь воздействующих на функцию жевания и обеспечивающих физический и психологический комфорт пациентов. Функция жевания-одна из базовых физиологических функций, реализующих поддержание нормальных условий жизнедеятельности организма человека. В медицинских

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Axial displacement of the suprastructures at the conical implant — abutment interface

Гуськов

Mishin²,

Kalinovskiy³

et al. 2022

Russian Journal of Dentistry

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BACKGROUND: The inconsistency of the congruence of the surface of the implantabutment interface leads to the impaired communication of the implant shaft with the oral cavity, breakdown of the structure, including the implant, and changes in the occlusal relationships because of axial displacement. AIM: This study aimed to investigate the degree of axial displacement of abutments made relative to implants and analogs. Specific tasks were as follows: (1) to make various abutments for implants with a conical connection obtained from MIS, (2) to study the value of axial displacement of abutments of each type relative to the implant with load modeling, and (3) to examine the value of the axial displacement of abutments of each type relative to the analog of the implant from the tightening force of the screw. MATERIALS AND METHODS: Axial displacements were tested using implants and analogs of MIS implants with conical joints. Original and non-original abutments were chosen as suprastructures. The original abutment was presented by CS-CPK62. Abutments for the conical connection C1 were made by milling, laser sintering, and casting according to burned models. The fastening of implant analogs and implants was made in a block of plaster of the 4th class. The study was conducted in a simulation complex we have developed, which creates a cyclic load within 30 kg. The study was divided into two stages. In the first stage, axial displacements on analogs from the force of screw tightening were examined. Abutments were attached with various forces: 7 Ncm (tightening force with a simple screwdriver), 15 Ncm, and 30 Ncm. After each screw tightening, vertical measurements were made with a micrometer. In the second stage, axial displacements on implants under load in the original simulation complex were assessed. The screw was tightened with a force of 30 Ncm, as recommended by the manufacturer, and load simulation was performed. Measurements were made both before and after the load simulation. RESULTS: The original abutments and those made by milling showed the greatest deviation (0.056 mm and 0.066 mm, respectively), and abutments obtained by casting had deviations of 0.047 mm. The smallest deviation was found in the abutment made by laser sintering (0.032 mm). The values obtained in the second stage were as follows. Original abutments and abutments obtained by milling showed the smallest axial displacement when modeling the load (0.00167 mm each). Moreover, the abutments obtained by casting and laser melting showed significant displacements (0.007 mm and 0.004 mm, respectively). CONCLUSIONS: A pattern was revealed: the smoother the surface of the conical parts, the stronger the axial displacement on the analog implants in the range of 730 Ncm, whereas an uneven surface gives the smallest axial displacement, and fixation according to the protocol provided resistance to chewing loads on the implants in the original and milled abutments. The use of a platform with a conical system to create high-precision orthopedic structures has certain limitations because an error in the height of the restoration is created in laboratory conditions. The use of non-original suprastructures leads to the accumulation of errors. Thus, it is necessary to further evaluate conical systems from other manufacturers and improve the accuracy of restorations based on dental implants.

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The Application of the Modified Method for the Production of Replacement Dentures to a Patient With Jaw Desomorphine Osteonecrosis

Cited by 3 publications

References 6 publications

Study of Architectonics of Mouth Cavity in Dental Patients

Study of Architectonics of Mouth Cavity in Dental Patients

Research of chewing efficiency in patients with extensive acquired defects of the upper jaw after resections of nasopharyngeal zone tumors and various terms of orthopedic rehabilitation

Axial displacement of the suprastructures at the conical implant — abutment interface

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