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Results for “Denture, Complete”

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PubMedDate not supplied

[Determination of the vertical dimension using the Slavicek method in 6 cases of complete denture rehabilitation].

The vertical dimension of occlusion in complete denture cases can be established with different techniques; one of these includes the use of a lateral cephalogram and its analysis. Accurate indications of the amount of the vertical dimension can be obtained through anatomical reference points. The method that we describe can be performed on mounted costs more easily than on patients at the dental chair. We report the data of six clinical cases in which the method has been used: the results, clinically analyzed, seem to be good, functionally and aesthetically.

Cephalometry↗

PubMed1989

[Dimensional accuracy and stability of the complete denture impression tray].

When recording final impressions for complete dentures, the dimensional stability of the tray material is of significance for the final result. The aim of this study was to measure the dimensional changes in different tray materials prior to and after border moulding. Self-curing acrylic, thermoplastic acrylic and shellac were measured at fixed intervals with the aid of a measuring microscope. The trays were constructed on metal master models with respectively nine reference points for the upper tray and eight points for the lower tray. Self-curing acrylic produces the most contraction as a function of time, followed by thermoplastic acrylic. Shellac exhibits the least contraction c.q. dimensional change. Thermoplastic acrylic material proved to be the most stable after border moulding. Shellac was totally unreliable due to the major changes following border moulding.

Dental Impression Technique↗

PubMed1989

[Gerber registration with functional impressions--a significant alternative in fabrication of complete denture?].

Gross occlusal discrepancies are noted frequently in complete dentures following registration which often necessities a new set up of posterior teeth. An examination was carried out to determine the extent to which these inaccuracies could be eliminated when a Gerber's registration was carried out with the help of functional impressions. It was found that occlusal relationships in dentures fabricated after registration with functional impressions and TMJ orientated mounting of the models to an articulator, could only slightly be improved as compared to the occlusal conditions observed in dentures fabricated after a manually assisted check bite. However, with regard to the attainment of an accurate and bilaterally balanced articulation, the described method proved significantly superior to an average set up resulting from a check bite.

Dental Articulators↗

PubMed1997

Gnathosonic study of occlusion in patients wearing complete dentures.

This study aimed to analyse occlusiosonograms from the same edentulous patients (a) wearing old complete dentures and (b) after adjustment of the occlusion of new dentures. Occlusiosonograms of subjects with a complete natural dentition and of edentulous patients wearing complete dentures were compared. Gnathosonic examination was carried out by means of piezoceramic transducers linked to an IBM PC/AT computer. Evaluation of occlusiosonograms was by mathematical analysis of frequency. Differences in the characteristic shape of occlusiosonograms and their frequency between the groups were demonstrated. Lack of stabilisation of old dentures was visible in some cases.

Adolescent↗

PubMed1990

Determination of occlusal vertical dimension by means of controlled pressure against tissues supporting a complete denture.

In order to establish the vertical dimension (VD) of a complete denture prosthesis, a new method of determining a comfortable mandibular position was tested using a recently designed hydraulic jack (hydraulic vertical displacement meter) in five edentulous patients. The device was designed so as to vary occlusal height by means of an extraoral jig connected to intra-oral hydraulic jacks, and to distribute the bite pressure applied against the denture-supporting tissue in approximately the same pattern as that produced by a denture with a VD preferred by the patient. The most comfortable mandibular position determined by this method coincided remarkably with the preferred VD of each patient in our study, indicating that the new device may be used to establish VD for complete denture construction.

Aged↗

PubMed2004

Complete dentures and oral health-related quality of life -- do coping styles matter?

UNLABELLED: Oral health-related quality of life (OHRQOL) in edentulous patients with complete dentures is often impaired. This paper investigates the effect of different coping styles on OHRQOL. PURPOSE: (a) To assess OHRQOL of edentulous patients with conventional complete dentures, and (b) to investigate if individual differences in these patients' styles of coping with stress affect their OHRQOL. MATERIALS AND METHODS: Data were collected from 249 fully edentulous patients with complete dentures (mean age: 66.0 years) who responded to a mailed survey (adjusted response rate: 48.8%). OHRQOL was measured with the 14-item short form of the oral health impact profile (OHIP). Ratings of coping strategies were obtained using the 28-item Brief COPE, an instrument measuring various styles of coping with stress. Linear regression analyses were used to explore the relationships between coping styles, background variables such as age, gender, income, and age of prosthesis, and the patients' OHRQOL. RESULTS: About 35% of the respondents reported impacts from their oral conditions on their overall OHRQOL (OHIP-14 total score) occasionally, fairly often, or often. Physical pain was even more prevalent, with 53.3% of the respondents reporting pain impacts. The linear regression model (P < 0.0001) explained 31.1% of the variation in the OHIP-14 total score. The coping variables instrumental support, behavioral disengagement, substance abuse, denial, and religion were significant negative predictors of OHRQOL. Only emotional support was a significant positive predictor of OHRQOL. CONCLUSION: Wearing conventional complete dentures has a significant impact on OHRQOL. This impact is moderated by the styles a patient uses to cope with stress. Using emotional support has a positive effect on OHRQOL, while other coping styles, namely instrumental support, behavioral disengagement, substance abuse, denial, and religion are significant negative predictors of OHRQOL.

Adaptation, Psychological↗

PubMed1990

[Methods and materials for the construction of complete dentures].

In a survey the methods and materials used for making complete dentures were collected from 603 dentists. The impression material most frequently used for primary impressions was alginate and elastic impression material for functional impressions. Compared with an earlier survey the percentage of dentist using needle point tracing for recording jaw relations increased from 6 to 40%. Remounting complete dentures was done by 64% of the dentists whenever required; 9% applied this method as a routine.

Alginates↗

PubMed1993

Differences two years after tooth extraction in mandibular bone reduction in patients treated with immediate overdentures or with immediate complete dentures.

In a randomized controlled clinical trial, 74 patients who required immediate dentures were randomly treated with immediate overdentures on two lower canines or with immediate complete dentures. Mandibular bone reduction was measured by use of oblique lateral cephalometric radiographs made at baseline and the results compared with those of one year and two years after denture treatment. Analysis of the data showed that the average bone reduction in the lower canine regions in the first year was 0.9 mm in the immediate-overdenture group and 1.8 mm in the immediate complete-denture group. In the posterior parts of the mandible, the bone reductions were, respectively, 0.7 mm and 1.9 mm. The differences were statistically significant in all measured regions. During the second year, no significant differences in bone reduction were found. The sums of differences in the first two years were significant in all regions except the molar region, preserving the initial difference. Retention of roots of canines beneath a mandibular denture in immediate denture patients, even when they were in poor condition, reduced the collapse of the alveolar processes in all regions of the mandible.

Alveolar Bone Loss↗

PubMed2000

Control of jaw closing forces: a comparison between implant-stabilised overdenture wearers and complete denture wearers.

This study compared the precision of control of jaw closing forces in two groups of edentulous subjects: ten patients wearing implant-stabilised mandibular overdentures and ten complete denture wearers who were satisfied with their prostheses. A force transducer was used to assess the ability of the subjects to follow pre-determined jaw closing cycles. The error in tracking the target increased as the force increased for both the implant and denture group. In this experiment, the overdenture wearers were less able to control jaw closing forces than successful wearers of conventional complete dentures.

Aged↗

PubMed1991

Intraoral strain gauge measurements on complete dentures: a methodological study.

This paper discusses the advantages and the limitations of strain gauge clinical research in prosthodontics. It also demonstrates the possibility of long term studies by explaining a methodological study that was undertaken on a group of 19 patients on two occasions a year apart. Of this group six were supplied with maxillary and mandibular complete dentures, five had maxillary complete dentures and mandibular osseointegrated fixed 10-12 unit bridges, and eight had maxillary and mandibular complete dentures at the first experimental session and osseointegrated fixed 10-12 unit bridges in the mandible at the second. It was found that during maximum biting the direction of functional strain was comparatively stable at a given point of a denture. It was evident that in experiments 12 months apart no major changes had taken place in the experimental dentures nor the denture bearing tissues. The accuracy of the strain gauges used was maintained and there were no failures due to loss of retention of the gauges. Loss of insulation and short circuiting was an occasional problem but instantly recognized if it occurred.

Aged↗

PubMed1976

Measurement of personality traits and their relation to patient satisfaction with complete dentures.

1. There was a high incidence of the personality traits of hypochondriasis, depression, hysteria, and manifest anxiety in the 70 complete denture patients of this study. 2. Most patients in this study were satisfied with the complete dentures received. 3. There was no significant relationship between the personality traits of hypochondriasis, depression, hysteria, and manifest anxiety and the degree of patient satisfaction with dentures. 4. There was no significant relationship between the personality traits of hypochondriasis, depression, hysteria, and manifest anxiety and the techinical quality of dentures. 5. There was no significant relationship between the technical quality of complete dentures and the degree of patient satisfaction with the same dentures.

Consumer Behavior↗

PubMed1990

[Study of masticatory forces of complete denture wearers].

Bilateral balanced occlusion is believed to be one of the ideal types of occlusion for complete denture. However, there are still many obscure items about its function during mastication, considering that the occlusion is adjusted on the articulators under the no-food condition. To analyze this problem, the author has already developed a six-channel telemetry system for recording the masticatory forces during mastication. This study was performed with this system. The purpose of this study was to analyze the occlusal force of the lower artificial posteriors in the cases of complete denture with bilateral balanced occlusion during mastication. In this report, the masticatory force and impulse in three complete denture wearers were measured and studied. The results were as follows: 1. On the working side, the lower artificial first molars showed the strongest force among the same side artificial posteriors, as previously reported. 2. On the balancing side, the lower artificial second premolars showed the strongest force and impulse, followed in order by the lower artificial first molars and the second molars. 3. It is suggested that the lower artificial second premolar of the balancing side would contribute to the denture stability during mastication.

Aged↗

PubMed1989

Problems in the assessment of complete dentures.

The evidence for the reliability of some of the most widely used criteria for the assessment of complete dentures is reviewed and a number of factors discussed which might account for the contradictory nature of this evidence, including methods of statistical analysis, the wording of criteria and possible extraneous influences on the judgment of observers using the criteria. Adequate and consistent reliability has not been demonstrated for any of the criteria which have been proposed and the development of either more reliable criteria or of objective tests of the performance of complete dentures is a priority if the results of epidemiological surveys of complete dentures are to be regarded as meaningful.

Dental Occlusion, Centric↗

PubMed1998

Construction faults, age, gender, and relative medical health: factors associated with complaints in complete denture patients.

STATEMENT OF PROBLEM: Many practitioners will experience a situation, whereby a patient with newly fabricated complete dentures continues to experience difficulty in adapting to them. This can lead to a protracted period of discouraging "adjustment appointments" that may not result in the eventual resolution of the problem. Therefore it is often concluded that there is some patient factor, either age, gender, medical, or psychologic status that is hindering the success of treatment. PURPOSE: This study examined a group of 100 patients who experienced ongoing difficulties with their new complete dentures, to determine possible underlying causes. MATERIAL AND METHODS: A retrospective study was conducted with information derived from patient records. All patients were treated by the same prosthodontist after having been referred specifically for their denture problems. Information regarding patient age, gender, medical and psychological histories, and information pertaining to the dentures at the time of presentation was derived from patient records. RESULTS: Statistical analysis comparing age, gender, and medical and psychologic status with the number or type of patient complaint failed to show any significant relationships. Significant relationships were observed when denture design faults or the condition of a patient's mucosa were compared with patient complaints. CONCLUSIONS: This study suggests that in most instances, complete denture patients present with complaints only when there is a real design fault or a tissue problem.

Adaptation, Physiological↗

PubMed2005

Do traditional techniques produce better conventional complete dentures than simplified techniques?

OBJECTIVES: To compare the quality of conventional complete dentures fabricated with two different techniques. A randomized controlled clinical trial was conducted to compare traditional (T) and simplified (S) methods of making complete conventional dentures on patients' ratings of satisfaction, comfort and function at 3 and 6 months following delivery. The quality of the prostheses was rated by prosthodontists at 6 months. MATERIALS AND METHODS: One hundred twenty-two male and female edentulous individuals, aged 45-75 years, were randomly allocated into groups that received dentures made with either T or S methods. Following delivery, patients' ratings of several denture-related factors were measured using 100mm visual analogue scales, and denture quality was assessed by blinded prosthodontists using ratings on a validated quantitative scale. RESULTS: There were no significant differences between the two groups in patient ratings for overall satisfaction (3 months: mean T = 83 mm, mean S = 83 mm, P = 0.97; 6 months: mean T = 79 mm, mean S = 79 mm, P = 0.96) or in prosthodontists' ratings of denture quality (T = 66, S = 63; P = 0.38). CONCLUSION: These results show that the quality of complete dentures does not suffer when manufacturing techniques are simplified to save time and materials. Dental educators should consider these findings when re-designing prosthodontic training programs.

Aged↗

PubMedDate not supplied

The effect of complete dentures with a metal palate on candida species growth in HIV-infected patients.

PURPOSE: This in vivo investigation compared the oral candidal population between heat-cured acrylic resin and nickel-chromium-beryllium alloy in maxillary complete dentures in HIV-infected patients. MATERIALS AND METHODS: Split-palate maxillary complete dentures were fabricated for 19 HIV-infected patients: one-half of the palate was made in acrylic resin and the other half in nickel-chromium-beryllium. Patients were divided into low or high CD4+ lymphocyte count groups. Dentures were worn for 5 months. Palatal mucosa was clinically evaluated at baseline, 1, 3, and 5 months after denture insertion. Specimens were collected at 1, 3, and 5 months using a modified imprint culture method. Speciation of Candida was performed using a chromogenic culture medium. Two-sample t-test was employed to determine effects and significant interactions between the control and test groups and the low and high CD4+ lymphocyte groups. A chi(2) test analyzed and compared the results of the clinical evaluation (p < 0.05). RESULTS: Significant differences were observed in the colony counts between both materials during the third (p= 0.046) and fifth months (p= 0.039). The low CD4+ group demonstrated significant differences during the third (p= 0.03) and fifth months (p= 0.05). There were no significant differences between the species of Candida that colonized either material with the exception of Candida dubliniensis (p < 0.001) and "Others" (p < 0.001) during the first and fifth months. There were no significant differences on the clinical appearance of the palatal mucosa between both materials (p= 1.00). CONCLUSIONS: The metal base proved to be effective in decreasing the fungal growth typically present in complete dentures. Although overt clinical manifestations were not present, colony counts of Candida species were high in the acrylic resin denture bases of these patients. This investigation demonstrated that metal base complete dentures provide an important alternative dental service for edentulous HIV-positive and other patients who are particularly prone to higher incidences of fungal infections.

Acrylic Resins↗

PubMed1995

The qualitative assessment of complete dentures produced by commercial dental laboratories.

Comprehensive criteria and simple methods of assessment have been developed for the evaluation of complete dentures supplied by commercial dental laboratories. One hundred laboratories in England and Wales were selected by random sampling. A single identical complete denture case was sent from general practice addresses to each of the selected laboratories and each of the laboratory stages evaluated according to specific criteria. This paper is concerned only with the evaluation of the finished dentures. Half of the cases were treated as NHS cases and half as 'private' cases. The private cases were further subdivided into those where details were left to the laboratory and those where detailed instructions were given for all stages of denture construction. Wide variations were found in both the quality and cost of complete denture laboratory work. Evaluation of some key features of finished dentures suggests that the quality of work was superior for the private cases in which detailed instructions were given to the laboratory. Even for the private (specified) cases, however, important faults were found in a number of cases.

Communication↗

PubMed2004

A simple procedure for minimizing adjustment of immediate complete denture: a clinical report.

This article describes fabrication of a clear surgical template that minimizes pressure caused by immediate complete dentures on a surgical area. The trimmed areas on the maxillary definitive stone cast were further trimmed on the duplicated stone cast for making the clear surgical template. The procedure provided proper seating of the immediate complete denture, comfort for the patient, and reduced postoperative soreness and denture adjustments.

Aged↗