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Results for “Denture, Complete”

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At least 397 records · Page 22Linked to original sources
PubMed1982

Change in recurrent headache and mandibular dysfunction after treatment with new complete dentures.

The changes in headache and mandibular dysfunction were studied in a group of forty-three complete denture wearers 6 months after treatment with new complete dentures. All patients completed a questionnaire and all were subjected to clinical examination of the function of the masticatory system. Eleven of the seventeen patients with recurrent headache reported less frequent headache 6 months after treatment and nine reported that the headache was less severe. There was also a statistically significant reduction of clinical signs of dysfunction of the masticatory system.

Consumer Behavior↗
PubMed1989

[Six channels telemetry system for recording masticatory forces of complete denture wearers].

A six channels telemetry system for recording masticatory force of complete denture wearers has been developed. This system is consisted of three blocks, the transmission block, the receiver block and the data storage and correction block. The transmission block is embedded in a lower complete denture. System has six load sensors and a standard resistor to correct sensor data. Data from six load sensors and standard resistor as well as standard zero are multiplexed using a division multiplex communication method. The sampling frequency is 666 Hz. And the signal is transmitted by FM modulation. The carrier wave frequency is 64 MHz. Receive data are decoded using start-stop system. The wave form noise is reduced using a signal averaging technique at an integrator. The data are input into the computer with an A/D converter. In this system, the sensor data is corrected at the computer with the standard resistor data. This method could reduce the influence of battery power changes and thermal drift significantly. For the load of 10 kg or less, the total linearity of the system remained at +/- 4% of the calibrated value. The noise level is 300 g.

Denture, Complete↗
PubMed1994

[Measurement of the polished surface of upper and lower complete dentures].

The authors measured the polished surface of fifty upper and lower complete dentures, with regard to sex. The measurements were performed using a special computer assisted stereo-fotogrammetric method in the National Cartographic Institute. The results show that the average area of the lower complete denture's polished surface is 2.096 mm2, and the upper's is, 3644 mm2. The authors did find any not differences according to sexes.

Computer-Aided Design↗
PubMed2004

Changes in temporomandibular disorders after treatment with new complete dentures.

A total of 250 edentulous patients (118 non-denture and 132 denture wearing) awaiting treatment for new complete dentures were examined for signs and symptoms of temporomandibular disorders. Signs and symptoms of temporomandibular disorder (TMD) were evaluated before prosthetic treatment, 3 months and 3 years after denture insertion by means Helkimo's Anamnestic and Clinical Dysfunction Indices. Before treatment began, patients were observed to have a low prevalence of signs and symptoms of TMD. This prevalence decreased, but was not statistically significant, in the 3 months and 3 years after denture insertion. No statistically significant correlations were found between signs and symptoms of TMD and denture retention, stability, occlusal errors, freeway space, age of present denture, or number of sets of dentures.

Adult↗
PubMed1978

Basic wax contouring for complete dentures.

The form and contour of the polished surface of the denture base is an important factor in the appearance and function of complete dentures. It is the responsibility of the dentist to insure that the dental laboratory technician reproduces the proper anatomic contour of the denture base. With attention to details in the final wax-up, the finishing procedures will be minimal. The use of high shine is all that is needed to polish. If anatomy is lost in the investing procedure, and it is necessary to recarve it with acrylic resin burs, then it will be necessary to use both coarse and fine pumice and high shine to complete the dentures (Figs. 15 to 17). When one applies these basic principles, a denture surface is produced that will be both refreshing and natural in appearance and aid in the stability of the dentures in function. To our patients who are contemplating prosthodontic replacements, it should remove the fear of having to submit to accepting an unnatural restoration.

Denture Bases↗
PubMedDate not supplied

Influence of occlusal scheme on the pressure distribution under a complete denture.

PURPOSE: The purpose of this study was to estimate which occlusion offers the best conditions of pressure distribution on the supporting structure under a complete denture when crushing food. MATERIALS AND METHODS: Simulated maxillary and mandibular complete dentures with three different posterior occlusal schemes--fully balanced occlusion, lingualized occlusion, and monoplane occlusion--were fabricated. Eight pressure transducers were placed in the basal surface of a mandibular denture. The pressure distribution on the mandibular edentulous mouth model with 1.5-mm-thick artificial tissue under a complete denture was recorded when crushing three different foods: soft food (kamaboko), peanuts, and carrot. The mean pressure values at each measurement point and the force required for each test were compared using one-way analysis of variance with P < or = 0.05 representing statistical significance. RESULTS: The required force for crushing a soft food or carrot in the left molar region in monoplane occlusion was significantly larger than that required in fully balanced occlusion or lingualized occlusion. In crushing soft food, fully balanced occlusion showed significantly higher pressure values on the working side than in monoplane occlusion or lingualized occlusion. In crushing the carrot, the pressure values in fully balanced occlusion and in lingualized occlusion were significantly lower than those in monoplane occlusion. CONCLUSION: These results demonstrate that with fully balanced occlusion and lingualized occlusion a large occlusal force is not needed for crushing hard food, and the stress to the supporting tissues is smaller than with monoplane occlusion.

Alveolar Process↗
PubMedDate not supplied

Comparative study of methods for the quantification of biofilm on complete dentures.

This study compared the application and reliability of 4 methods for biofilm quantification (computerized, paper-weighing, point-counting, and planimetric) in complete dentures, verifying the correlation between them. The internal surfaces of 62 complete dentures were stained (5% erythrosine) and photographed. The slides were projected on paper, and the areas (total and biofilm-covered) were outlined with a pencil. These areas were measured with an equidistant point grid (point-counting method), a digital planimeter (planimetric method), and for the paper weighing method they were cut and weighed with a precision scale. For the computerized method, ImageTool software was used. In order to perform a validation test of the methods, all of them were applied to slide projections of geometric figures with known dimensions. The correlation tests showed high correlation values (r = 0.82 to 0.99) among the methods. The validation test (ANOVA) showed no statistically significant differences among the values obtained from the measurement of figures using all four quantitative methods and the real dimensions of these geometric figures. Quantitative methods were efficient and reliable for measuring quantity of biofilm in complete dentures, and may be useful in experimental studies on the efficacy of hygiene products. The computerized method was fast and easy to perform.

Aged↗
PubMed2001

Evaluation of the utility of cephalometric parameters in constructing complete denture. Part I: placement of posterior teeth.

Various types of parameters, including cephalometric ones, have been used in the construction of complete denture. This study aimed to evaluate the utility of cephalometric parameters for this purpose. The position of the posterior teeth in a group of 42 edentulous patients, successfully rehabilitated with complete denture according to clinical parameters, was evaluated by cephalometrics. The following were determined: vertical dimension of occlusion (VDO); orientation of the occlusal plane; and subdivision of the denture space. The cephalometric parameters do not correspond to the clinical positioning of the posterior teeth in successful rehabilitation with complete denture.

Aged↗
PubMed1990

[Electromyographic activity (EMG) of masseter and temporal muscles in edentulous patients before and after complete dentures].

Electromyographic records from the temporal and masseter muscles of 19 edentulous patients were made, before and 30 days after wearing complete dentures. The purpose of this study was to determine the electromyographic changes: The amplitude of electromyographic records from de temporal muscles decreased, while those from the masseter muscles increased. These results suggest that the use of complete denture provokes electromyographic changes by increasing the occlusal vertical dimension and, thus, periodical electromyographic records from temporal and masseter muscles could be useful for determining the time for complete denture change.

Denture, Complete↗
PubMed1977

Making complete dentures for research purposes.

A method for construction of complete dentures for research purposes has been described. According to this method, a baseplate is fabricated of hard acrylic resin in combination with resilient denture liner. These dentures can be repeatedly used by interchanging denture teeth of the same mold.

Acrylic Resins↗
PubMed1983

Fabricating acrylic resin baseplates for complete dentures.

A technique for fabricating acrylic resin baseplates for complete dentures has been described. With this technique multiple sets of baseplates can be made at a time for a set of master casts. As with all polymethyl methacrylate resins, polymerization shrinkage is present. However, by using denture repair acrylic resin, shrinkage is minimized. Furthermore, when necessary, conventional procedures can be applied to stabilize the baseplates.

Acrylic Resins↗
PubMed1986

Nocturnal electromyographic evaluation of masseter muscle activity in the complete denture patient.

Nocturnal oral activity was evaluated in 12 complete denture wearers by means of EMG measurements of the masseter muscle. Patients who had worn dentures for at least 6 months were selected. EMG levels were compared when subjects slept with and without the dentures in the mouth. Three subjects appeared to have reduced EMG values when sleeping with the dentures. However, no overall group trends or significant differences were obtained. High variability in nightly EMG values could not be explained by a post hoc analysis of patient oral symptoms or denture characteristics. Efforts should be directed at improved methodology to study the specific mechanism of the effect of denture wearing on nocturnal muscle activity levels. Additional knowledge is needed on the occurrence and effects of parafunctional habits in the edentulous patients.

Adult↗
PubMed1994

Computed tomography and complete dentures. Morphometric analysis.

Ten edentulous patients who were wearing complete dentures that appeared to be well-fitting clinically but were not satisfactory to the patient, were imaged with the use of direct coronal computed tomography. Sections were selected to pass through the maxillary first molar region to study the relationships between the maxillary denture and the supporting tissues, at rest, in maximal intercuspation, and during simulated function. The radiation dose was minimized by limiting the number of cuts made to seven through the same site in different jaw positions both with and without function. Computed tomography offers useful diagnostic information when evaluating patients who have persistently unresoluable denture problems.

Aged↗
PubMed2000

Technical aspects of complete denture construction.

This article deals with technical aspects of complete dentures as well as the importance of good communication between the clinician and the technician. The objectives for technicians for each component are discussed.

Communication↗