The effect of polymerization and acrylic resin type on durability of repaired removable denture elements. A laboratory note Wpływ sposobu polimeryzacji i rodzaju tworzywa akrylanowego na wytrzymałość naprawianych elementów protez ruchomych. Notatka laboratoryjna

2015 ◽  
Vol 1 (11) ◽  
pp. 157-158
Author(s):  
Karolina Karońska
Keyword(s):  
Acrylic Resin ◽  
Removable Denture ◽  
Laboratory Note

IMMERSION OF HEAT POLYMERIZED ACRYLIC RESIN DENTAL BASE IN ARAK BALI AGAINST SURFACE ROUGHNESS

2021 ◽  
Vol 17 (1) ◽  
pp. 22-26
Author(s):  
Kadek Ayu Wirayuni ◽  
◽  
I Made Hendri Dwi Saputra ◽  
Keyword(s):  
Surface Roughness ◽  
Acrylic Resin ◽  
Control Group ◽  
Surface Strength ◽  
Denture Base ◽  
A Value ◽  
Removable Denture ◽  
Significant Difference ◽  
Post Test ◽  
Oral Tissue

Introduction: The denture base is the part of the removable denture that is supported by good adaptation to the underlying oral tissue. Most of the denture bases are made of acrylic or polymethyl methacrylate resin, better known as PMMA. However, the acrylic resin also has disadvantages such as easily broken and absorbs liquids both water and chemicals. The chemical absorption like alcohol, ethanol, and some drinks that contain acidic materials will chemically be induced with acrylic resin and settle in the pores of the acrylic resin. The chemical damage or defect creates roughness on the surface of the acrylic resin which can cause cracking or crazing and a decrease in surface strength and hardness. Materials and Methods: The method used in this research was a laboratory experimental design with a post-test-only control group using 12 samples consisting of 2 different types of samples by measuring the surface roughness of the acrylic resin after immersing the sample with a predetermined time. Results and Discussions: One-way ANOVA test results showed a significant difference in surface roughness after the samples immersion with a value of p = 0.006 (p <0.05). Conclusions: Based on this research, can be concluded that there is an increase in the surface roughness of the heated polymerized acrylic resin for 3 hours and 4 hours of immersion. The longer the heated polymerized acrylic resin is soaked in arak hence the level of surface roughness increases.

scholarly journals REJUVENATING EDENTULISM USING CAD-CAM TECHNOLOGY: A COMPREHENSIVE REVIEW

2020 ◽  
Vol 8 (9) ◽  
pp. 1233-1243
Author(s):  
Suresh Kamble ◽  
◽  
Ajit Jankar ◽  
Pratiksha Somwanshi ◽  
Shirish Pawar ◽  
...  
Keyword(s):  
Computer Aided Design ◽  
Oral Care ◽  
Public Health Problem ◽  
Acrylic Resin ◽  
Cost Of Care ◽  
Complete Dentures ◽  
Denture Base ◽  
Removable Denture ◽  
Computer Aided ◽  
Cad Cam

Edentulism has been a severe public health problem in industrialized countries due to aging and poor oral care. Design and fabrication of the complete dentures are mainly using conventional methods involving an enormous series of clinical and laboratory procedures. Edentulous patients have to make several visits to the clinic for the traditional fabrication of denture. Now the unceasing developments occur over several years. Present-day technological innovations allow the use of various systems with computer‑aided design/computer‑aided manufacture (CAD/CAM) technology to produce complete dentures has seen exponential growth. There are different manufacturing techniques of CAD-CAM complete denture like AvaDent, Wieland digital denture, Baltic denture, DENTC system. CAD-CAM technology requires only two appointments for the patient to get their complete removable denture. A reduction in clinical chair time also shortens the cost of care. The improved fit of the denture was because of fewer processing errors. It simplifies the re-manufacturing of lost/broken prostheses due to the digital storage of denture data. The pre-polymerized acrylic resin used by manufacturers for the fabrication of a denture base delivers excellent fit and strength when compared to conventionally processed bases. It doesnt show any polymerization shrinkage as there is a less residual monomer. Hence, it reduces the potential infections as fewer candida albicans attach to the denture bases. The motive of this article is to highlights the benefits of CAD-CAM technology over conventional denture fabrication.

Pengaruh perendaman plat resin akrilik dalam ekstrak kayu manis (Cinnamomum burmanii) terhadap jumlah blastospora Candida Albicans

e-GIGI ◽  
2013 ◽  
Vol 1 (2) ◽  
Author(s):  
Christian Dama
Keyword(s):  
Candida Albicans ◽  
Acrylic Resin ◽  
T Test ◽  
Control Group ◽  
Dilution Method ◽  
Denture Stomatitis ◽  
Cinnamon Extract ◽  
Acrylic Plate ◽  
Removable Denture ◽  
Significant Difference

Resin akrilik sering digunakan sebagai bahan dari gigi tiruan, khususnya basis gigi tiruan. Adanya rongga-rongga mikro pada akrilik menjadi tempat perlekatan sisa-sisa makanan yang dapat meningkatkan jumlah mikroorganisme dalam rongga mulut, salah satunya ialah jamur Candida albicans. Pertumbuhan yang pesat dari jamur Candida albicans menjadi penyebab utama infeksi pada mukosa rongga mulut pemakai gigi tiruan lepasan akrilik, disebut denture stomatitis. Ekstrak kayu manis yang mengandung minyak atsiri, sinamaldehid, eugenol dan juga senyawa seperti flavonoid, Saponin, serta tanin memiliki efek antifungi. Tujuan penelitian ini untuk mengetahui pengaruh dari ekstrak kayu manis dan konsentrasi ekstrak kayu manis terhadap jumlah blastospora Candida albicans pada plat akrilik sehingga mampu mencegah dan menanggulangi penyakit denture stomatitis. Plat akrilik yang telah terkontaminasi dengan jamur Candida albicans direndam dalam ekstrak kayu manis dengan konsentrasi 20%, 30%, 40%, 50%, dan aquades sebagai kontrol. selanjutnya, plat akrilik di getarkan untuk menjatuhkan Candida albicans dalam tabung reaksi dan dihitung jumlah blastosporanya dengan metode pengenceran menggunakan cairan NaCl dan metode hitung langsung pada mikroskop. Hasil perhitungan statistik dengan uji Independent t-test diketahui terdapat perbedaan yang bermakna antara kelompok ekstrak kayu manis dan kelompok kontrol (p ≤ 0,05). Dari hasil penelitian dapat disimpulkan bahwa ekstrak kayu manis dapat memengaruhi pertumbuhan jumlah blastospora Candida albicans pada plat resin akrilik dan meningkat seiring dengan meningkatnya konsentrasi ekstrak kayu manis (cinnamomum burmanii) yang digunakan.Kata kunci: Resin akrilik, Candida albicans, ekstrak kayu manis.ABSTRACTAcrylic resin is often used as an ingredient of artificial teeth, denture base in particular. The existence of micro cavities in acrylic attachment to place leftover food that can increase the number of microorganisms in the oral cavity, one of which is Candida albicans. The rapid growth of Candida albicans is a main cause of infection in the oral mucosa acrylic removable denture wearers, called denture stomatitis. Cinnamon extract that contains essential oils, sinamaldehid, eugenol and also compounds such as flavonoids, saponins, and tannins have antifungal effects. The purpose of this study to determine the effect of cinnamon extract and cinnamon extract concentrations against Candida albicans blastospora number on acrylic plate so as to prevent and control disease denture stomatitis. Acrylic plate that has been contaminated with Candida albicans soaked in cinnamon extract with a concentration of 20%, 30%, 40%, 50%, and sterile water as a control. furthermore, acrylic plate vibrate to drop Candida albicans in a test tube and counted the number of blastospora by using saline dilution method and direct count method on the microscope. The results of calculations with the statistical test known Independent t-test significant difference between cinnamon extract group and the control group (p ≤ 0,05). From the results of this study concluded that cinnamon extract may affect the growth of Candida albicans blastospora on acrylic resin plate and increases with increasing concentration of the extract of cinnamon (Cinnamomum burmanii) were used.Keywords : Acrylic resin, Candida albicans, cinnamon extract.

Bond between single artificial teeth and the base plate in removable denture metal framework

2018 ◽  
Vol 1 (90) ◽  
pp. 11-21 ◽  
Author(s):  
J. Taczała ◽  
J. Sawicki
Keyword(s):  
Base Plate ◽  
Acrylic Resin ◽  
Denture Base ◽  
Partial Denture ◽  
Metal Framework ◽  
Denture Plate ◽  
Removable Denture ◽  
Metal Frame ◽  
Artificial Teeth ◽  
Scientific Achievements

Purpose: The purpose of this paper is to analyse attempts at improving the bond between acrylic artificial teeth and the denture base plate - considered in the context of single incisors in framework denture. Design/methodology/approach: It is a review article focusing on the analysis of state of the art in the field of the bond between the polymerised acrylic (teeth) and the polymerising acrylic resin during the production of denture (denture plate). Previous works regard the issue of individual incisor teeth (both upper and lower) breaking off from the metal partial denture. Findings: The bond between artificial acrylic teeth and the acrylic denture plate of the prosthesis was discussed. Ways of improving this bond were also presented. Although researchers and companies offer many methods for improving this bond, none of them refer directly to the issue discussed in this article. In conclusion- the hitherto scientific achievements work well in the case of acrylic prostheses without a metal frame, which constitutes an obstacle for achieving the effect required. In this work, it is suggested that further research would not only develop and provide more detail on the issue of the bond between artificial teeth and the denture plate, but also solve the problem appearing in cases of metal partial denture. Originality/value: This article shows a significant problem that hasn’t been discussed in detail in the past.

scholarly journals Viral contamination of acrylic resin removable denture bases in patients with COVID-19: A cross-sectional study

2021 ◽  
Author(s):  
Nadia Elyassi Gorji ◽  
Negareh Salehabadi ◽  
Zakaria Zakariaei ◽  
Jamshid Yazdani Cherati ◽  
Leila Delavaryan ◽  
...  
Keyword(s):  
Acrylic Resin ◽  
Cross Sectional Study ◽  
Sectional Study ◽  
Cross Sectional ◽  
Viral Contamination ◽  
Removable Denture

scholarly journals Prosthetic rehabilitation in a patient with Singleton Merten syndrome and acrylic resin hypersensitivity

RSBO ◽  
2017 ◽  
Vol 14 (2) ◽  
pp. 124-09
Author(s):  
Natália Spadini de Faria ◽  
Celso Bernardo de Souza Filho ◽  
Delsa Deise Maccketti Kanaan ◽  
Yara Teresinha Corrêa Silva-Sousa1 ◽  
Érica Alves Gomes
Keyword(s):  
Allergic Reaction ◽  
Motor Development ◽  
Acrylic Resin ◽  
Skin Lesions ◽  
Loss Of Function ◽  
Removable Partial Denture ◽  
Patient’S Satisfaction ◽  
Facial Esthetics ◽  
Removable Denture ◽  
Hands And Feet

Singleton Merten Syndrome is a rare disease characterized by the presence of the dental dysplasia phenotype, calcifications in the aorta, progressive wear and loss of bone protein (osteoporosis) in the hands and feet. Patients have muscle weakness, poor motor development, abnormal dentition, deformities of the feet and hands, and skin lesions. Objective: This report describes the maxillomandibular rehabilitation of a patient with Singleton Merten Syndrome and an allergic reaction to the acrylic resin through maxillary overdenture and mandibular partial removable denture. Case report: Female patient, 18 years old, with clinical characteristics of Singleton Merten Syndrome and allergic reaction to acrylic resin, with complaints of loss of function and esthetics due to the absence of several teeth, but with the presence of unerupted maxillary and mandibular tooth buds. Maxillary overdenture and mandibular removable partial denture were made of polyethylene. Conclusion: The rehabilitation treatment with maxillary overdenture and mandibular partial removable denture provided better facial muscle support, restoring masticatory function and facial esthetics. With this treatment, it was possible to reestablish patient’s satisfaction and self-esteem due to the correct construction of the prostheses, and minimize hypersensitivity reactions in the oral mucosa, which allowed the use of these prostheses by the patient without any complications.

scholarly journals THE EFFECT OF MONOMER OF REMOVABLE DENTURE BASE RESIN ON THE STRUCTURAL ORGANIZATION OF THE GLANDULAR ZONE OF ALBINO RAT HARD PALATE IN THE EXPERIMENT

2020 ◽  
Vol 73 (12) ◽  
pp. 2667-2671
Author(s):  
Yevhenii S. Khilinich ◽  
Vadym Yu. Davydenko ◽  
Ivan І. Starchenko ◽  
Mykhailo Ya. Nidzelskyi ◽  
Hanna М. Davydenko ◽  
...  
Keyword(s):  
Salivary Glands ◽  
Mucous Membrane ◽  
Hard Palate ◽  
Structural Organization ◽  
Experimental Studies ◽  
Basal Layer ◽  
Acrylic Resin ◽  
Albino Rats ◽  
Denture Base ◽  
Removable Denture

The aim: The paper presents the findings of the study of the 3 month-long effect of the monomer of the “Ftorax” denture base acrylic resin on the structural organization of the mucous membrane and the condition of the salivary glands of the albino rats’ hard palate during the experiment. Materials and methods:To achieve this goal, experimental studies involved mature rats, whose hard palate mucosa was smeared with 2% aqueous solution of the monomer of the “Ftorax” denture base acrylic resin twice a day in the morning and evening. The animals were sacrificed on day 30 of the experiment and following 3 months. Results: The findings of the studies of the structural organization of the mucous membrane and the analysis of the micropreparations of the mucous membrane of the hard palate of the animals of Group III have revealed substantial pathological changes both in the covering epithelium and in the lamina propria. The comparison between the intact animals and group of animals subjected to the 3 month-long effect of the monomer showed a significant thickening of the epithelial layer; a decrease in the mitotic index in the basal layer; impaired stratification of the cellular elements of the spinous layer; manifestations of exudative purulent inflammation, cystic and sclerotic changes in the excretory ducts; increase in the amount of connective tissue in the lobules of the salivary glands; decrease in the volume of the secretory parenchyma. Conclusions: Based on the findings of the study we can conclude that the prolonged effect of the monomer of the denture base acrylic resins leads to disorder of the structural organization of the glandular zone of the hard palate; in its submucous layer the total volume of the salivary glands decreases, which, in turn, significantly reduces secretion and leads to hyposalivation.

Prosthetic rehabilitation in a patient with Singleton Merten syndrome and acrylic resin hypersensitivity

RSBO ◽  
2017 ◽  
Vol 1 (2) ◽  
pp. 124
Author(s):  
Natália Spadini de Faria ◽  
Celso Bernardo de Souza Filho ◽  
Delsa Deise Maccketti Kanaan ◽  
Yara Teresinha Corrêa Silva-Sousa ◽  
Érica Alves Gomes
Keyword(s):  
Allergic Reaction ◽  
Motor Development ◽  
Acrylic Resin ◽  
Skin Lesions ◽  
Loss Of Function ◽  
Removable Partial Denture ◽  
Facial Esthetics ◽  
Removable Denture ◽  
Hands And Feet ◽  
Tooth Buds

Singleton Merten Syndrome is a rare disease characterized by the presence of the dental dysplasia phenotype, calcifications in the aorta, progressive wear and loss of bone protein (osteoporosis) in the hands and feet. Patients have muscle weakness, poor motor development, abnormal dentition, deformities of thefeet and hands, and skin lesions. Objective: This report describes the maxillomandibular rehabilitation of a patient with Singleton Merten Syndrome and an allergic reaction to the acrylic resin through maxillary overdenture and mandibular partial removable denture. Case report: Female patient, 18 years old, with clinical characteristics of Singleton Merten Syndrome and allergic reaction to acrylic resin, with complaints of loss of function and esthetics dueto the absence of several teeth, but with the presence of unerupted maxillary and mandibular tooth buds. Maxillary overdenture and mandibular removable partial denture were made of polyethylene. Conclusion: The rehabilitation treatment with maxillary overdenture and mandibular partial removable denture provided better facial muscle support, restoring masticatory function and facial esthetics. With this treatment, it was possible to reestablish patient’s satisfactionand self-esteem due to the correct construction of the prostheses, and minimize hypersensitivity reactions in the oral mucosa, which allowed the use of these prostheses by the patient without any complications.

Immunocytochemistry after fast freeze fixation-freeze substitution: Advantages and limits

1990 ◽  
Vol 48 (3) ◽  
pp. 42-43
Author(s):  
Marie-Thérèse Nicolas
Keyword(s):  
Osmium Tetroxide ◽  
Freeze Substitution ◽  
Acrylic Resin ◽  
Expected Improvement ◽  
List Type ◽  
Chemical Fixation ◽  
Freeze Fixation ◽  
Liquid Chemical ◽  
Luciferase Enzyme ◽  
Lower Background

An alternative to aqueous chemical fixation consists in immobilizing physically the specimen by freezing it as fast as possible without using any cryoprotectant. This Fast Freeze Fixation (FFF) followed by Freeze Substitution (FS) avoids osmotic artefacts due to the slow penetration of liquid chemical fixative. Associated with Immuno-Gold labeling (IGS), FFF-FS allows a more precise localization of antigens.Using the bioluminescent bacteria Vibrio harveyi, a comparison of IGS with an antibody directed against its luciferase (enzyme of the luminescent reaction) has been done after liquid chemical fixation versus FFFFS. This later technique, beside an expected improvement of the ultrastructure always shows a better preservation of antigenicity and a lower background. In the case of FFF-FS technique (Figure 3):–labeling in acrylic resin (LRWhite) is 2 to 4 fold more intense than in epoxy resin (Epon),–but the ultrastructure is always better in Epon.–but the ultrastructure is always better in Epon.–The addition of fixatives in the substitution medium, results in a decrease of labeling which is more important in the case of a mixture of fixatives than with osmium tetroxide alone; with one exception: the substitution with glutaraldehyde which produces a dramatic increase in the density of the labeling but also, at the same time, a swelling of the cells of about 30%.

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