scholarly journals Comparison of the Masticatory Force (with 3D Models) of Complete Denture Base Acrylic Resins with Reline and Reinforcing Materials

Materials ◽  
2021 ◽  
Vol 14 (12) ◽  
pp. 3308
Author(s):  
Catarina Calamote ◽  
Isabel Carolina Coelho ◽  
António Sérgio Silva ◽  
José Luís Esteves ◽  
Luís Moreira ◽  
...  
Keyword(s):  
Glass Fiber ◽  
3D Models ◽  
Alveolar Ridge ◽  
Denture Base ◽  
Acrylic Resins ◽  
Masticatory Force ◽  
Student’S T ◽  
The Right ◽  
Metal Meshes ◽  
Fiber Mesh

The reinforcement of acrylic denture base remains problematic. Acrylic prosthesis fractures are commonly observed in prosthodontic practice and have not been reliably resolved. This study compared the resistance to masticatory force of acrylic bases of removable complete conventional prosthesis in 3D upper models. Forty acrylic base test specimens containing two types of reinforcement meshes (20 with glass fiber meshes (FIBER-FORCE®- Synca, Bio Composants MédicauxTM, Tullins, France), 20 with metal meshes (DENTAURUM®-Ispringen, Germany)), 20 with a conventional PMMA acrylic base (LUCITONE 199®-Dentsply Sirona, York, PA, USA), and 20 using a permanent soft reline material (MOLLOPLAST-B®-DETAX GmbH & Co. KG, Ettlingen, Germany) were tested—a total of 80 specimens. Half of the specimens were made for a low alveolar ridge and half for a high alveolar ridge. The data were analysed using one-way analysis of variance and Student’s t-test for independent test specimens. In the high-alveolar-ridge group, the prosthesis reinforced with the glass fiber mesh was the most resistant to fracture, while in the low-alveolar-ridge group, the non-reinforced prosthesis showed the highest resistance masticatory force. Prostheses with the permanent soft reline material showed the lowest resistance to fracture in both high and low-alveolar-ridge groups. The results show that the selection of the right reinforcement material for each clinical case, based on the height of the alveolar ridge, may help to prevent prosthesis fractures.

Does microwave disinfection affect the dimensional stability of denture base acrylic resins? A systematic review

Gerodontology ◽  
2021 ◽  
Author(s):  
Rodrigo Moreira Bringel Costa ◽  
Helena Sandrini Venante ◽  
Mariana Domingues Pordeus ◽  
Ana Paula Chappuis‐Chocano ◽  
Karin Hermana Neppelenbroek ◽  
...  
Keyword(s):  
Systematic Review ◽  
Dimensional Stability ◽  
Denture Base ◽  
Acrylic Resins

scholarly journals Water sorption of heat-polymerized acrylic resins processed in mono and bimaxillary flasks

2006 ◽  
Vol 17 (2) ◽  
pp. 122-125 ◽  
Author(s):  
Carolina B. Meloto ◽  
Laís R. Silva-Concílio ◽  
Cristiane Machado ◽  
Margarete C. Ribeiro ◽  
Fábio A. Joia ◽  
...  
Keyword(s):  
Water Sorption ◽  
Acrylic Resin ◽  
Microwave Energy ◽  
Water Bath ◽  
Acrylic Resins ◽  
Energy Processing ◽  
Group 3 ◽  
Group 2 ◽  
Student’S T ◽  
Group 1

This study evaluated water sorption in heat-polymerized acrylic resins processed in monomaxillary flasks by water bath and in bimaxillary flasks by microwave energy and water bath. Fifty heat-polymerized acrylic resin specimens were fabricated according to the 12th specification of the American Dental Association and assigned to 3 groups: group 1 was processed by water bath in monomaxillary metallic flask; group 2 was processed by microwave energy in bimaxillary PVC flask; and group 3 was processed by water bath in bimaxillary metallic flask. Specimens were submitted to water sorption test, means were calculated and analyzed statistically by Student's t-test. Means (in g/cm³) were: group 1 - 0.024085, group 2 - 0.025312 and group 3 - 0.022098. Microwave energy processing and the amount of stone and resin used in the bimaxillary PVC flask did not influence water sorption; specimens processed in bimaxillary metallic flask by water bath presented lower water sorption means, suggesting an inadequate polymerization of the acrylic resin mass.

scholarly journals Porosity, water sorption and solubility of denture base acrylic resins polymerized conventionally or in microwave

2018 ◽  
Vol 26 (0) ◽  
Author(s):  
Rosana Marques Silva Figuerôa ◽  
Bruna Conterno ◽  
César Augusto Galvão Arrais ◽  
Carolina Yoshi Campos Sugio ◽  
Vanessa Migliorini Urban ◽  
...  
Keyword(s):  
Water Sorption ◽  
Denture Base ◽  
Acrylic Resins

scholarly journals Difference in height of maxillary alveolar ridge on edentulous women and dentate women using panoramic radiography

2019 ◽  
Vol 10 (2) ◽  
pp. 1243-1248
Author(s):  
Cek Dara Manja ◽  
Dennis
Keyword(s):  
Panoramic Radiography ◽  
Total Sample ◽  
Mechanical Stimulus ◽  
Average Height ◽  
Alveolar Ridge ◽  
Cross Sectional ◽  
Average Value ◽  
Significant Difference ◽  
The Difference ◽  
The Right

The height of the maxillary alveolar ridge can be measured using panoramic radiography. The decline occurred because the height of the alveolar ridge undergoes slow physiological resorption due to the absence of mechanical stimulus. The purpose of this research is to know the difference and the average height of the maxillary alveolar ridge in edentulous and dentate women using panoramic radiography. This study is an analytical method with a cross-sectional approach. A total sample of 40 women, edentulous and dentate has been measured. Measurements were made by measuring the distance between the lowest point of the infraorbital ridge and alveolar crest maxilla on the incisor point, right and left premolar, right and left molar. A statistical test is done using independent t-test. The results showed that the average value of a dentate women sample is greater than edentulous. The average value obtained by the dentate sample is greatest in incisor point by 37,57mm± 3,34mm and the smallest at the right molar point by 33,87mm ± 2,81mm. The average value obtained by the edentulous sample is greatest in incisor point by 35,30mm ± 2,79mm and the smallest at the right molar point by 31,84mm ± 3,85mm. It can be concluded that there is a significant difference in the height of the maxillary alveolar ridge on an edentulous sample and dentate, except the right molar teeth. The average height of the maxillary alveolar ridge in an edentulous sample is 33,35mm ± 3,43mm, and the dentate sample is 35,66mm ± 3,21mm.

scholarly journals MANDIBULAR CANINE INDEX (MCI)

2010 ◽  
Vol 17 (03) ◽  
pp. 459-463
Author(s):  
IRFAN AHMED MUGHAL ◽  
ANWAR SAOOD SAQIB ◽  
FARIDA MANZUR
Keyword(s):  
Medical College ◽  
Significant Difference ◽  
Males And Females ◽  
Mandibular Canine ◽  
Student’S T ◽  
Dental Evidence ◽  
Aseptic Conditions ◽  
Sexual Identification ◽  
The Right ◽  
Mass Disasters

Introduction: Dental evidence is valuable in identification of individuals, especially following mass disasters; estimation of age at death of skeletonised remains and establishing guilt in cases of criminal injury by biting. Mandibular canines are found to exhibit the greatest sexual dimorphism amongst all teeth. Objective: To investigate the accuracy with which gender can be differentiated by using the mandibular canine index in the Punjabi – Pakistani population. Setting: Independent Medical College and Punjab Medical College,  aisalabad. Period: Dec. 2008 to Dec. 2009. Material and Methods: The present study was performed on 200 students, between the age group of 18-25 years, randomly sampled with informed consent (Through 3rd party). Mandibular canine width and intercanine distance were measured with the help of Vernier caliper after observing aseptic conditions. Mandibular canine index was calculated and the observed MCI was compared with the standard MCI value. The data was then analyzed using student’s “t” test. Results: No significant statistical difference was noted between the right and left mandibular canines amongst males and females (same sex) but when comparing between males and females, there was highly statistical significant difference (P < 0.001). The calculated standard MCI for canines of males and females found to be 0.2504. With these calculations we could predict sex correctly at 75.97% in this study (Male: 71.67% and Female: 78.72%). Conclusion: MCI is a quick and reliable method for sexual identification when a standard for the population is available. With these calculations, we could predict the sex correctly at 75.97 % in this study. This method can be used as adjunct to other available tools for sex determination. DNA studies can reveal sex accurately.Availability of comprehensive database with “NADRA” can also be used as adjunct to “MCI” to enhance the accuracy in determination of sex and identity of the person in Pakistan.

scholarly journals THE LEVEL OF AWARENESS OF THE POPULATION ABOUT FIRST AID MEASURES OF DENTAL TRAUMA IN CHILDREN

2018 ◽  
Vol 14 (3) ◽  
pp. 79-85 ◽  
Author(s):  
Евгений Иощенко ◽  
Evgeniy Ioshenko ◽  
Тарас Закиров ◽  
Taras Zakirov ◽  
Раушана Шарипова ◽  
...  
Keyword(s):  
Emergency Care ◽  
Dental Trauma ◽  
Statistical Processing ◽  
Correct Choice ◽  
Permanent Tooth ◽  
Traumatized Children ◽  
Level Of Knowledge ◽  
Low Efficiency ◽  
Student’S T ◽  
The Right

Background One of the urgent problems of dentistry is complex therapy of acute dental trauma in children. This is due to the numerous difficulties in the treatment of teeth in traumatized children, low efficiency of therapy and frequent development of complications. The effectiveness of treatment of children with a traumatic tooth, as well as the frequency and nature of the development of complications depends heavily on the knowledge of population about the nature of the course and emergency care of this pathology. Objectives The purpose of the study was to determine the level of knowledge of various groups of the population about the methods of prevention and emergency care for acute dental trauma in children. Methods During the study 539 people were examined, including 361 parents aged 22 to 72, 96 children aged 5 to 18 and 82 students of the 1st and 2nd year of the USMU stomatology faculty. Statistical processing of the obtained results was carried out with the help of STATISTICA v12 statistical analysis software package. To analyze each question, the Spearman correlation coefficient (rs) was used, to determine the differences, the Student's t-test (p⩽0.05). Results According to the results of the questionnaire, only ~ 29% of all respondents note the time of going to the dentist with the "knocked out tooth" as 1 hour. When asked about permanent tooth replacement, only 32.4% of adults, 19.5% students and 27% children gave correct answers. The majority of respondents do not know about the correct choice of the transporting media for avulsed tooth: in the group of parents the most popular choice was antiseptic (12.2%), in the group of children - a clean handkerchief (18.8%), about a third of all respondents found it difficult to choosing the right answer. Conclusions In general, the level of sanitary knowledge of various population groups in Yekaterinburg about dental trauma in children is not enough. Correlation between the receipt of information in the past and the success of answers to questions about dental trauma is weak or absent. The need for a knowledge of the fundamentals of assistance in the case of dental trauma by educators is extremely high.

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