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At least 37 records · Page 2Linked to original sources
PubMed1980

Effect of a denture adhesive on complete denture dislodgement during mastication.

A method of evaluating the denture stabilizing effects of a denture adhesive by means of counting denture dislodgements during the eating of a standardized portion of a test food is described. A reduction in the number of such dislodgements after application of a denture adhesive, as compared to eating the same food without adhesive applied to the denture, was used as a measure of adhesive effectiveness. Subject responses to a number of denture-performance satisfaction parameters were also obtained. With a test adhesive, significant reductions in dislodgement were found using steak, taffy-apple, a hard-roll sandwich, and celery as test foods among 16 subjects with dentures that fit well. Analysis of subjective evaluations indicated that the test adhesive was perceived as having effected: (1) improved chewing ability, (2) reduced denture wobble, (3) improved confidence, (4) increased comfort, and (5) reduced amount of food particles collecting under the denture, all to a significant degree (p < .01). It is suggested that additional data from controlled clinical studies are needed to allow proper assessment of the usefulness and possible abuse effects of denture adhesive products. This method, and the resulting data, are offered as a stimulus to the end.

Adhesives↗
PubMed1989

Complete denture esthetics.

Complete denture esthetics can no longer be considered solely a function of tooth selection and arrangement or the colors and contours of the denture bases. Denture esthetics must also include the entire face in which the expressions of inner feelings, personality, comfort, image, well-being, and perceptions of past dental experiences are all very evident. These hard and soft components all contribute to the complete denture esthetic result; they are inseparable and should be given every consideration when developing a successful complete denture esthetic restoration. Both the patient and the dentist must understand this interrelationship for optimal success.

Denture Design↗
PubMed1990

[Clinical study of evaluation on masticatory function in complete denture wearers. A comparison of masticatory movements between normal natural dentition and complete denture wearers].

The purpose of this study was to comparatively study and elucidate the characteristics of masticatory function of the subjects with complete denture and those with normal natural dentition. The study were carried out on 20 subjects with normal natural dentition and 30 subjects with complete denture having clinically good prognosis. Masticatory movements were analyzed by electromyograph (EMG) and sirognathograph (SGG) when the subjects were chewing peanuts and kamaboko (boiled fish paste). The results were as follows: 1. The duration of chewing cycle, closing phase, occluding phase, and EMGs burst duration (especially after tooth contact) were significantly longer in the subjects with complete denture. 2. The maximum opening distance was significantly shorter, the maximum opening and closing velocity were significantly slower, in the subjects with complete denture. Further, the standard deviation of the coordinates of the sample points in the occluding phase was indisordered in the subjects with complete denture, and standard deviation of the coordinates of sample points in occluding phase were varied in complete denture wearers. 3. The frontal masticatory pattern tended to unstable and typical tear drop shape pattern was found in about 60% of the subjects with complete denture. 4. Different reactions to the test foods were observed in the subjects with normal natural dentition, while such was not noted in the cases of the subjects with normal natural dentition. These results was suggest that the masticatory function in the subjects with complete denture were obviously differ from those of normal natural dentition due to the difference in the sensory-motor-system.

Arachis↗
PubMed1989

Role of the surface and volume of palatal relief chambers in retention of maxillary complete dentures.

Maxillary complete dentures were made with thickened denture bases for 10 patients. The retentive force was measured with a dynamometer. Acrylic resin was then removed with a bur from the mucosal side of the denture base, thus progressively enlarging the palatal chamber. Each enlargement was followed by measurement of the surface and volume of the chambers and the retention force of the dentures. The mean force of the denture retention diminished progressively from 57 N to 13.5 N as the chambers enlarged. An analysis of the results showed that the retention of maxillary complete dentures does not depend on the surface of the palatal chambers but is inversely proportionate to their volume.

Acrylic Resins↗
PubMed1989

[Clinical study on the prognosis of complete denture wearers covering 10 years. 3. Fitness test of the complete denture base].

The purpose of this study was to estimate the clinical condition of complete denture wearers. 72 patients came to our Dental Hospital according to our recall. The examination consisted of a questionnaire and clinical examinations. For objective evaluation, the fitness test of lower complete denture base was taken place and was classified into four groups by the thickness of the white-silicone film (A-zone 0-30 microns, B-zone 30-70 microns, C-zone 70-130 microns, D-zone 130 microns-). Results 1. The average ratio of four groups of the white-silicone film were A-zone 9.3%, B-zone 35.8%, C-zone 24.5% and D-zone 30.4%. 2. The fitness of anterior portion was ill fit in comparison with posterior portion. 3. There was statistically significant difference between the fitness of lower complete denture and dentist's judgment diagnosed as ill fit denture. 4. There was significant difference between the fitness test and the patients who complained about loose fit of the denture.

Denture Bases↗
PubMed2006

Influence of lip support on the soft-tissue profile of complete denture wearers.

Complete dentures change the soft-tissue profile, although the exact relationship remains unclear. This study examined the relationship between the presence and degree of lip support provided by dentures and the lateral views of the facial appearance of edentulous patients. The subjects were five edentulous patients (three men and two women). Their facial appearances with experimental record blocks, with and without their complete dentures, were measured using a three-dimensional laser measuring system. The experimental record block for each subject had different conditions in the anteroposterior direction anteriorly but the same vertical dimensions posteriorly. The lateral digital facial images were displayed on a computer monitor, and the linear and angular measurements were analysed using image analysis software. The nasolabial angle was smaller and the labial points projected more with excessive lip support versus with deficient support. Moreover, the counter of the nose was affected by the labial flange of the record base, particularly in the facial appearance of one subject with highly atrophic residual ridges. The lip support affected the lower facial soft-tissue profile, including the lower part of the nose; the nasolabial angle and positional relationship between the lips and Ricketts's esthetic plane (E plane) are useful indexes for examining lip support.

Aged↗
PubMedDate not supplied

Correlation between quality of life and denture satisfaction in elderly complete denture wearers.

PURPOSE: This study was done to clarify the correlation between the quality of life (QOL), defined as overall satisfaction with daily life, and denture satisfaction in elderly complete denture wearers. MATERIALS AND METHODS: A new method for quantifying overall satisfaction with daily life (QOL) among 2,079 elderly people (age > or = 65 years) was developed by evaluating the contribution of 13 factors (eating, health problems, daily exercise, fatigue, sleep quality, smooth communication, physical comfort, aging, loneliness, job and hobbies, meaningfulness, social life, and economic problems) to overall daily life satisfaction by a multiple regression analysis. Then, correlation between the QOL and denture satisfaction was analyzed by the regression model in 84 randomly selected complete denture wearers from the above population. RESULTS: Quantification of the QOL was completed by converting category scores to integers between 0 and 100 for eight highly correlated factors (eating, smooth communication, physical comfort, loneliness, job and hobbies, meaningfulness, social life, and economic problems) to overall satisfaction with daily life (P < 0.01). Significant positive correlation was found between the QOL score and denture satisfaction score (P < 0.05). CONCLUSION: Edentulous elderly people who are well satisfied with their daily lives are also satisfied with their complete dentures.

Activities of Daily Living↗
PubMed1997

[The effects of soft denture liners applied to complete dentures on masticatory functions].

The soft denture liner was applied to dentures for the edentulous patients with poor residual ridge and thin mucosa. It is useful for minimizing the soreness caused by the denture during mastication, however, its effect on masticatory functions has been rarely investigated. The purpose of this study was to determine the effect of a soft liner applied to complete dentures on masticatory functions. Five edentulous volunteers who were satisfied with their new complete dentures took part in this study. The lower dentures were lined with a soft liner. Comparison of occlusal force, masticatory performance, masseter muscular activity, and mandibular movement were made between new dentures and relined dentures. The results of applying soft materials to lower dentures obtained by comparison with complete dentures using hard acrylic resin bases were follows: 1. Occlusal forces were significantly larger (p < 0.01). 2. Masticatory performance in chewing peanuts increased slightly. The number of strokes and time for masticating a peanut decreased significantly (p < 0.01). 3. Masticatory muscles functioned more rhythmically and mandibular movements became smoother. 4. Integrated EMGs per stroke of all patients was similar.

Aged↗
PubMed1990

[Three dimensional changes of the denture base of the complete denture following polymerization].

The objective of this study was to clarify some of the dimensional change patterns of the denture base of the complete denture following polymerization. Dimensional changes of three polymerization method types were compared. The complete dentures were measured by using the three dimensional measurement system. The results obtained were summarized as follows. 1. Dimensional changes from the original model immediately after polymerization of complete upper and lower dentures were recorded and all three polymerization methods produced shrinkage on all three axes toward the center. Heat cured resin samples and microwave cured resin samples showed the same shrinkage with pour type resin samples only showing 1/2 that amount. 2. The gradual dimensional changes occurring after polymerization up until 4 weeks were also recorded. The heat cured resin samples showed no additional changes but remained in its shrunken state. The pour-type resin samples began to enlarge until almost all of them reached the original model size within 4 weeks. The microwave cured resin samples began to enlarge but only slightly and then soon stopped changing. 3. All polymerization method types showed more dimensional change in the lower plate than in the upper plate.

Acrylic Resins↗
PubMed1980

Verification appointment in complete denture therapy.

Completed dentures should demonstrate the beneficial effects of an ordered, disciplined approach to the "try-in" appointment. The proposed design of the trial dentures for this appointment allows accurate verification of spatial positions, and easy access to changes in position and arrangement of the teeth. Two phases of the verification appointment should be recognized: laboratory and clinical. In the laboratory phase, the teeth are arranged according to anatomic landmarks, and the trial denture is designed to allow accurate verification of previous records. In the clinical phase, the intermaxillary dimensions are verified or corrected, and the teeth are rearranged for support of the lips and optimal esthetics. The design permits simple and effective changes in the spatial position of the teeth. When the try-in or verification appointment is carefully planned and the list of verification checks made in a disciplined and orderly manner, this appointment can progress to a meaningful and predictable conclusion.

Appointments and Schedules↗
PubMed2005

Conversion of a removable partial denture to a transitional complete denture: a clinical report.

A procedure is described for conversion of an existing removable partial denture into a complete denture using autopolymerizing tooth-colored acrylic resin, acrylic resin denture repair material, and a clear matrix template. The shape, color, and position of the lost natural teeth may be duplicated in the transitional denture, minimizing the psychological concerns of the patient regarding esthetics and social impact. Because the patient is never without teeth, an appropriate healing time can occur before fabrication of the definitive prosthesis.

Dental Prosthesis Design↗