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At least 55 records · Page 3Linked to original sources
PubMed1984

The mechanical strength of maxillary complete dentures.

A complete study of the static and dynamic strength of complete maxillary dentures was undertaken. First, the denture base material was investigated in its various forms from the point of view of tension, creep, relaxation, fatigue, and the effect of a corrosive environment. Complete dentures were tested under static compression, and the distribution of stresses along the midline of the upper dentures was determined by means of strain rosettes and by reciprocating compression, the determination of their fatigue strength. The results were found to conform with experience as far as lifetime of complete dentures is concerned.

Alcoholic Beverages↗
PubMed1998

Factors associated with the presence of denture related stomatitis in complete denture wearers: a preliminary investigation.

Various factors have been associated with the presence of denture related stomatitis. These include local factors such as continuous denture wear, trauma from dentures and poor denture hygiene Systemic factors, use of various pharmacological agents and smoking have also been implicated. This investigation involved history taking and examination of 250 patients attending Guy's Hospital for the construction of complete dentures. No association was found between systemic factors, use of pharmacological agents or smoking and the presence of denture related stomatitis. Night wear of complete dentures was found to be significantly associated with the prevalence of denture related stomatitis.

Chi-Square Distribution↗
PubMed1996

[Anterior denture teeth selected for complete dentures].

The purpose of this study was to investigate the influence of sex and age on the selection of color, size, and form of anterior teeth for complete dentures. A sample representing one hundred eighty-five edentulous patients whose complete dentures were made with. Real Crown teeth (Shofu Inc.) was obtained. The results were as follows: 1) Lighter teeth were selected for females than males, but age had no relation to the selected color of the teeth. 2) Larger teeth were selected for males than females, but age had no relation to the selected size of the teeth. 3) The combination and tapering forms were selected frequently, the combination form was used more frequently for females than males and the tapering form was used more frequently for males than females.

Adult↗
PubMed2003

Effect of denture adhesive on stability of complete dentures and the masticatory function.

This study examines the effects of denture adhesive on the retention and stability of complete dentures and the masticatory function. The authors estimated the stability of complete dentures from 3-dimensional (3-D) denture movement and rotational denture movement and additionally the masticatory function from cycle time and chewing time. Six edentulous subjects who participated in this study had old and newly fabricated complete dentures. Upper denture movement was recorded using a 3-D motion capture system while chewing 3 kinds of food (peanuts, fish paste, raisins). Both the new and old dentures showed that using a denture adhesive contributes to reducing 3-D denture movement, rotational denture movement and chewing time during chewing the various foods. The cycle time in new and old dentures was statistically unaffected by applying denture adhesive. There was no statistically significant difference in improvement in 3-D denture movement or rotational denture movement between the new and old dentures, for any of the foods. This study observes the overall effect of denture adhesive during use for both dentures. The results of this study suggest that denture adhesive contributes to reducing denture movement and so improves chewing function.

Adhesives↗
PubMed1990

[A basic study on pressure distribution of supporting structures under complete denture. 1. Application of pressure dispersion analyzing system by using impedance grid sensor to measure the pressure of supporting structures under complete denture].

In order to measure the pressure distribution on supporting structures under complete denture, we used impedance grid pressure sensor and examined its accuracy and availability. The results were as follows: 1. The sensitivity of this sensor was high when the distance between electrodes was short. 2. This sensor showed large change in output voltage and high sensitivity in the case of soft elastic materials. 3. This sensor showed the high linearlity between output voltage and applied load. 4. This sensor showed hysteresis loop under cycle load. 5. Base line of this sensor that has the urethane rubber as elastic material was changed when the load was applied intermittently. We measured the pressure distribution over supporting bones under upper complete denture by using simulator of maxillary edentulous with this impedance grid pressure sensor. We could observe the pressure distribution and pressure region in detail and visually when the load was applied to the both occlusal tables evenly.

Alveolar Process↗
PubMed1995

Fabrication of a duplicate denture from an existing complete denture.

A technique is presented that describes the fabrication of a duplicate denture using the patient's existing complete denture. This procedure enables the practitioner to offer patients an alternative to being without a denture during a laboratory reline of an existing denture. A vinyl polysiloxane impression material is used to impress the polished surface of the existing denture as well as to block out undercuts on the impression surface of the denture before pouring a stone cast. Because of the stability of the impression material used, most of the laboratory procedures can be accomplished separate from the clinical appointment.

Acrylic Resins↗
PubMed1999

Achieving an even thickness in heat-polymerized permanent acrylic resin denture bases for complete dentures.

Permanent denture bases form the fitting surface of a denture and are constructed on a master cast, in heat-polymerized acrylic resin. These bases are strong and rigid and demonstrate both the fit and retention of the final prosthesis. General recommendations suggests a thickness of between 1.5 to 3 mm for these bases. The normal procedure for producing such a denture base is to manually adapt materials to the cast, in their plastic state, before processing. Such procedures are liable to distortion and variation in the thickness of the resultant denture base and may be unreliable. This article describes a method for achieving a consistent thickness in a heat-polymerized, permanent, acrylic resin denture base through the use of a vacuum-formed, thermoplastic blank as a template. The method is simple, and results in a denture base with a consistent even thickness.

Acrylic Resins↗
PubMedDate not supplied

The challenge of replacing complete dentures: Part 1.

Complete dentures need to be replaced at suitable intervals-either because of changes in the denture-bearing tissues, usually due to alveolar resorption, or because of general deterioration of the existing dentures. The purpose of this and the following article is to consider the challenges that arise in replacing complete dentures. The rationale for using techniques in which features of existing dentures can be employed in the construction of replacement complete dentures will be discussed, together with methods suitable for clinical practice. In the first part diagnosis and treatment planning will be considered and a variety of copying techniques reviewed. The limitations of these techniques will be discussed and alternative treatment strategies will be considered.

Dental Restoration Wear↗
PubMedDate not supplied

A CAD/CAM system for removable denture. Part I: Fabrication of complete dentures.

This study investigated the development of a computer-aided system for designing and fabricating removable complete dentures. The anatomical and morphological information of edentulous residual ridges and surrounding tissues were obtained from maxillomandibular double impressions mounted on a high-speed, three-dimensional laser scanner. Artificial tooth arrangements, occlusion, the outline of polished surface, and denture border location were developed on a work station using a knowledge data base. Established three-dimensional data were transferred into a three-dimensional, laser lithography machine, and a complete denture was fabricated from photopolymerized resin composite material.

Computer-Aided Design↗
PubMed2004

The flow rate of whole and submandibular/sublingual gland saliva in patients receiving replacement complete dentures.

Provision of complete dentures to a new denture wearer increases the salivary flow rate is well known. The new dentures act as an additional mechanical stimulus to the salivary reflexes, thus increasing the flow rate. The purpose of this study was to determine whether replacing complete dentures would elicit the same response. Unstimulated and stimulated whole and submandibular/sublingual (SM/SL) saliva were collected before inserting complete replacement dentures and again after 2 days and after 3 weeks of denture wearing. Unstimulated whole salivary flow rate increased significantly 2 days after inserting replacement dentures, decreasing at 3 weeks but remaining significantly above the baseline. Stimulated whole salivary flow rate increased significantly after 2 days but decreased to normal after 3 weeks. Stimulated and unstimulated SM/SL salivary flow rate increased significantly after 2 days, decreasing at 3 weeks while remaining significantly above the values found before denture insertion.

Aged↗