• Journal of Korean society of Dental Hygiene
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• v.15 no.1
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• pp.73-79
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• 2015

Objectives: The purpose of this study was to investigate the factors influencing on the denture satisfaction in the low income elderly people. Methods: The subjects were 143 elderly people from 60 to 75 years old wearing dentures and receiving consistent follow-up in the public health center in Busan. A self-reported questionnaire was filled out by the elderly people from February 1 to March 1, 2013. The questionnaire consisted of denture satisfaction, social variables, and psychological variables. Data were analyzed by ANOVA and multiple regression analysis using SPSS 18.0. The sociodemographic characteristics included gender, age, and chronic diseases. The recognition of oral health included pronunciation, denture maintenance, mastication ability, and education for denture care. The questionnaire was measured by Likert 5 scale. Results: Gender, chronic disease, denture care instructions, and the self-preception of the oral health after denture treatment were closely correlated with denture satisfaction(p<0.001). Age and the number of repairs were very important factor to denture satisfaction(p<0.05). Elderly women were more satisfied with denture than men and those who had no chronic diseases tended to be more satisfied with denture. Those who received oral care instructions were more satisfied with the denture than those who did not. The younger age group and no repairing prosthetic group tended to be more satisfied with the denture. Conclusions: It is important to provide the denture management services to the low income elderly when they demand the services. The national dental health policy must be focused on connection of the elderly people denture services with the public health center.

• The Korean Journal of Health Service Management
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• v.11 no.4
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• pp.157-168
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• 2017

Objectives : The purpose of the study was to provide basic data for the improvement of their happiness through the use of effective denture-related services and restoration of healthy oral function. Methods : The subjects of the study were 452 denture wearers using the elderly welfare facilities in Seoul. Results : The main variables influencing the happiness of the denture wearers were living with the family, subjective health, oral health status, duration of denture use, and regular oral examinations. Living with one's family had the greatest influence on the happiness of the denture wearers. Conclusions : This study discusses the effect of satisfaction and behavior factors on effective denture use with reference to the happiness of denture wearers. This information will help improve denture management programs.

• Journal of Technologic Dentistry
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• v.30 no.2
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• pp.135-147
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• 2008

The results are as following. This study aimed to furnish basic data for improving the oral health of the elderly by conducting research into the relationship between denture satisfaction and the perceived oral health status of elderly people with removable dentures. The study performed research involving 246 elderly people who were living in Jeonju and Iksan, jeonbuk, and who were 65 years old or over from August 1 to December 5, 2007. The research method was a face-to-face interview. 1. The denture satisfaction of respondents for the research averaged $3.74{\pm}0.69$, and there was a significant difference in their satisfaction according to the level of education, the cohabitant family type, the procurement of living expenses, the performance of leisure activity, the period of current denture use, the number of denture changes, the experience during a dentist visit for denture maintenance, the experience of restricted activity due to annual oral diseases, and the opinions about denture prices. 2. 48.8% of respondents answered that their oral health status was good, and there was a significant difference in their satisfaction according to the procurement of living expenses, the total period of denture use, the period of current denture use, the number of denture changes, the experience of restricted activity due to annual oral diseases, and the opinions about denture prices. 3. The most highly influential variable affecting denture satisfaction was the opinions about denture prices(R=33.7%). 4. The most highly influential variable affecting the perceived oral health status was the educational level(R=17.3%). 5. As a result of analyzing the relationship between denture satisfaction and perceived oral health status, more respondents were satisfied with their dentures the more they thought their oral health status was in good shape.

• Journal of Technologic Dentistry
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• v.20 no.1
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• pp.21-25
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• 1998

A detailed description of the Laboratory Processing procedures for Soft Base Denture that varies from those offered by the manufacturer has provid to be effective. As follows ; 1. Pomotion of patient's comfortability 2. increase in denture retention 3. because of the same heat-curing denture materials used improves bonding & endurance 4. often used denture refitting 5. reducing the rate of alveolar absorption The processing for soft base denture is very sensitive, consequntly.

• Journal of Technologic Dentistry
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• v.30 no.2
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• pp.47-56
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• 2008

This is a research for thickness change of denture base according to the shape of sprue & investment position of denture base in flask when injecting polyamid base resin for flexible partial denture as a part of study for Valplast among the flexible partial denture with a nylon base. It has been introduced several kinds of flexible partial denture product with a nylon base, but Valplast is the most widely used product among them. Valplast has been the most generally used material today since developed in 1950s in the United States as a material for flexible partial denture. Valplast is much more aesthetic than general metal-acrylic partial denture due to its translucent pink color and biocompatibility in terms of material characteristic. It keeps its flexibility for a long time after production, imposes a less burden on the teeth used as abutment, and it can be easily insert and remove due to its particular suppleness. Moreover, it is felt like real teeth more than metal-acrylic partial denture when being put in and takes alveolar bone under good protection since it receives occlusal force equally under the denture base. The most outstanding feature of Valplast is flexibility. The extent of its flexibility is determined by width & thickness of denture base. Considering general working procedure of Valplast, it can be seen that the thickness of denture base formed out of wax is increasing by the pressure while injecting resin. This research is to decide and test on the thickness increasing of Valplast by injecting pressure and the hypothesis upon that and is to prepare the basis estimating the increasing extent of thickness of denture base on the basis of the test result. In this test, it is expected occlusal malposition & thickness increasing of denture base by injecting pressure according to 4 kinds of test data which are to select 3 types of sprue method settling the forefront position at which the test material of fixed standard can be invested and to position the test material at the rearmost part keeping the minimum distance to set sprue. For 4 kinds of injecting test by investment position & sprue type, 20 test materials, 5 for each test were produced and a pressure of 1,180Kg was given with automatic injector of air cylinder type. The results are as follows: 1. For the amount of thickness increasing of denture base by investment position, the thickness of front investment is less increasing than the one of rear investment. 2. For the amount of thickness increasing of denture base by sprue type, the thickness of straight decompression sprue type which can absorb the injecting pressure after injecting polyamide base resin is less increasing than the other sprue types.

• The Journal of Korean Academy of Prosthodontics
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• v.39 no.1
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• pp.58-70
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• 2001

For the successful treatment of complete denture, obtaining a good retention is essential. There are lots of factors affecting denture retention. Denture material, one of those factors affecting denture retention, was the subject of this study, and internal surface treatment also considered for the method of enhancing denture retention. Two resin(Lucitone $199^{(R)}$(heat cured resin) Vertex $CP^{(R)}$(self cured resin)) and two metal($Biosil^{(R)}$(Co-Cr alloy), $Vitallium^{(R)}$(Co-Cr alloy)) denture base materials were used for making test denture base. Newly developed device was used for measuring denture retention. After the retention was measured. We treated internal surface of test denture base with $50{\mu}m\;Al_2O_3$ powder, under 90psi, for 1 minute. Then the retention was measured again. The result was analyzed with K-S test, one-way ANOVA test and independent t-test to deter mine the significant differences as the 95% level of confidence. The results are as follows : In cases of without internal surface treatment, the retention was increased in order of $Vitallium^{(R)},\;Biosil^{(R)},\;Vertex CP^{(R)}$ and Lucitone $199^{(R)}$. Except between Vertex $CP^{(R)}$ and $Biosil^{(R)}$, retention of the other materials was significantly different (p<0.05). After the treatment of internal surface, the retention was increased in order of $Vitallium^{(R)},\;Biosil^{(R)},\;Lucno\;199^{(R)},\;Vertex\;CP^{(R)}$. Except between Lucitone $199^{(R)}$ and Vertex $CP^{(R)}$, $Vitallium^{(R)}$ and $Biosil^{(R)}$ the retention of remaining groups was significantly different each other (p<0.05). In the matter of each material, after the internal surface treatment the retention was increased with Vertex $CP^{(R)},\;Biosil^{(R)}\;and\;Vitallium^{(R)}$ and the value of differences were statistically significant. When we compare the retention of resin and metal denture base, the retention of both denture bases increased significantly with internal surface treatment, and resin denture base showed better retention. As the results show, selecting denture base material could be an important choice of complete denture treatment. To increase denture retention, internal surface treatment can be considered as a possible method.

• The Journal of Korean Academy of Prosthodontics
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• v.36 no.1
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• pp.18-25
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• 1998

The purpose of this study was to determine how to use soft relining material by observing an amount of denture displacement according to the different base area of residual ridge and thickness of soft relining material under masticatory force. Stone models that simulated residual ridge were made with different amount of denture base area and denture was fabricated by conventional heat curing resin with usual manner on the model and relined by silicone type soft relining material with different thickness. Specimen was examined the amount of denture displacement by Instron within range of normal occlusal force. The results were as following : 1. The increasing rate of denture displacement was higher than that of soft relining material thickness. 2. The amount of denture displacement decreased 1.7 times when base area became double at same thickness of soft relining material 3. The increasing rate of denture displacement was higher than that of occlusal force

• The Journal of Korean Academy of Prosthodontics
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• v.26 no.1
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• pp.197-206
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• 1988

The purpose of this study was to investigate the effect of wearing the removable partial denture on plaque accumulation. Twelve removable partial denture cases were examined. Patients were recalled three consecutive 3 day periods. Plaque index was measured after each 3 day period. (1) not wearing the denture, (2) wearing the denture, (3) wearing the denture after intensive tooth brushing instruction. The results were as follows: 1. Plaque indices of all the remaining teeth were higher following the wearing of removable partial denture than those of teeth not wearing the denture and those of teeth after intensive tooth brushing instruction. 2. Plaque indices showed statistical difference between all the tooth surfaces which were in contact with the denture and those which were not. 3. Plaque indices showed no statistical difference between buccal and lingual surfaces which were in contact with the denture and those which were not. 4. Plaque indices showed statistical difference between proximal surfaces which were in contact with the denture and those which were not.

• The Journal of Advanced Prosthodontics
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• v.8 no.4
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• pp.296-303
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• 2016

PURPOSE. The aim of this study was to evaluate whether there is any typical deformation pattern existing in complete denture when it was dried by using the 3D scanner and surface matching program. MATERIALS AND METHODS. A total of 28 denture bases were fabricated with heat curing acrylic resin (each 14 upper and lower denture bases), and 14 denture bases (each 7 upper and lower denture bases) were stored in the water bottle (water stored), and another 14 denture bases were stored in the air (dry stored). Each specimen was scanned at $1^{st}$ day after deflasking, $14^{th}$ day after deflasking, and $28^{th}$ day after deflasking, and digitalized. Three dimensional deformation patterns were acquired by comparison of the data within storage group using surface matching program. For evaluating differences between groups, these data were compared statisticallyusing Kruskal Wallis and Mann Whitney-U test (${\alpha}$=.05). RESULTS. When evaluating 3D deformation of denture base, obvious deformations were not found in maxillary and mandibular water storage group. However, in dry stored group, typical deformation pattern was detected as storage time passes. It occurred mostly in first two weeks. Major deformations were found in the bilateral posterior area in both maxillary and mandibular group. In maxillary dry stored group, a statistical significance was found. CONCLUSION. It was proved that in both upper and lower denture bases, dry storage caused more dimensional deformation than water storage with typical pattern.

• Journal of the Korea Convergence Society
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• v.10 no.12
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• pp.511-516
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• 2019

The purpose of this study was to investigate the factors influencing on the denture satisfaction in the elderly with removable denture in Jeonju(N=157). The average of denture satisfaction was 3.62. As for denture satisfaction per sub-factors was in order of masticatory satisfaction(3.81), fixation satisfaction(3.66) and general satisfaction(3.46). The convergence factors on the denture satisfaction were the perceived oral health state, leisure activity, monthly pocket money, and visiting dental clinic. As a result, the influencing factors of denture satisfaction were general characteristics of denture wearers rather than denture related characteristics. Therefore, it is necessary to pay attention to the social factors(leisure life, economy level, etc.) of denture wearers in order to increase the denture satisfaction.