Effect of the denture adhesive for dry mouth on the retentive force of the experimental palatal plates: a pilot controlled clinical trial.

Background: A denture adhesive for dry mouth with good cleaning properties has recently been developed. While previous studies on models have shown the effectiveness of denture adhesives in terms of retention and cleanability, no reports have evaluated their effectiveness in the oral cavity. The aim of this study was to compare and investigate the retention and usability of an experimental palatal plate in the dentulous jaw using a denture adhesive for dry mouth, a conventional cream-type denture adhesive, an oral moisturizer, and a denture moisturizer.

Effect of traction direction and pressure load on the palatal plate on retentive force.

Background: Recently, a denture adhesive that is easy to clean and contain moisturizing ingredients have been developed for patients with dry mouth. Although the retentive force produced by conventional denture adhesives and oral moisturizers have been compared on models, no study has reported their comparison in the oral cavity. In this study, we aimed to clarify the effects of different directions of traction and loads at the time of pressure contact on the retentive force on a palatal plate made from a dentulous jaw model.

Development of an optimal relief method for the palatal plate by stress analysis.

Background: Plate dentures cannot be easily modified after fabrication; therefore, the sites and magnitude of relief must be effectively assessed at the time of fabrication. However, a considerable variation exists in the magnitude of optimal relief and relief range, and there are no guidelines that present these clearly, leading the dentists to decide subjectively. Thus, this study aims to develop an optimal relief method to improve the stress bearing capacity of the palatal mucosa.

Changes in denture retention with denture adhesives and oral moisturizers for the oral cavity: an in vitro study.

Background: It is difficult to maintain complete dentures during meals in place. This in vitro study aimed to assess changes in denture retention between rest and function using denture adhesives and oral moisturizers in an oral cavity model.

Methods: The following test samples were applied between the palatal plate and the edentulous jaw ridge model: denture adhesive, denture adhesive for dry mouth, oral moisturizer, and denture moisturizer.

Fabrication of removable palatal augmentation prosthesis on a complete denture to reduce weight and maintain hygiene.

A removable veneer-type palatal augmentation prosthesis (PAP) was attached to a complete denture to reduce weight and maintain good hygiene. As a result, the weight of the PAP was reduced from 27.1 g at the time of palatal augmentation, by using the tissue conditioner, to 16.

Fabrication of a customized tray for preventing fracture of isolated abutment teeth in definitive casts.

Isolated abutment teeth with advanced bone resorption on definitive casts for a partial removable dental prosthesis can fracture when the definitive cast is removed from the impression or during subsequent laboratory procedures. This report describes a technique that avoids fracture of the definitive cast during its fabrication. A separating line is formed on the custom tray, which enables removal of the definitive cast without fracturing the isolated tooth.

Influence of denture supporting tissue properties on pressure-pain threshold--measurement in dentate subjects.

Purpose: The present study was designed to clarify the relationship between the properties of the palatal mucosa and the pressure-pain threshold.

Methods: Three parts of the palatal mucosa of 17 dentate subjects were measured: the median part of the palate, the lateral part of the first molar, and the midpoint between these two parts. The subjects were instructed to press a pushbutton when he or she felt pressure-pain.

Systematic clinical evaluation and correction procedures for support of removable partial dentures.

Support, retention, and bracing are the three main functions of a direct retainer in removable partial dentures (RPDs). RPDs must have sufficient supporting ability for proper occlusal rehabilitation. Support ability depends on the fit, size, shape, and location of the occlusal rest.

[Prediction of mandibular movement by observation of facial skin markers].

Purpose: Various methods have been used for observation of mandibular movement. However, many methods disturb physiological movement as the subject must wear a sensor. Therefore, to predict mandibular movement from the motion of facial skin, the correlation between the movements of mandibular incisor-tooth point and facial skin markers was evaluated by multiple regression analysis.