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At least 433 records · Page 24Linked to original sources
PubMed1994

An in vitro study of a surface wetting agent for addition reaction silicone impressions.

The aims of this study were to determine whether the use of a topical surfactant (Hydrosystem) reduced the number of air bubbles visible on the surface of polyvinyl siloxane impressions and stone dies. The impressions exhibited a mean of 1.4 +/- 2.1 bubbles when Hydrosystem wetting agent was used, which was significantly less (p < 0.001) than when it was not used (mean 5.5 +/- 4.7 bubbles). Dies prepared with Hydrosystem surfactant contained a mean of 0.4 +/- 0.8 bubbles, which was significantly (p < 0.001) less than when Wax-Mate surface agent was used (mean 3.5 +/- 5.2 bubbles). In conclusion, in vitro use of Hydrosystem surfactant reduced the number of air bubbles on the surface of silicone impressions and stone dies.

Dental Impression Materials↗
PubMed1994

A boxing procedure for corrected cast impressions.

This new method for boxing a corrected cast impression for a distal extension removable partial denture improves the procedure. The framework with its impression is seated on the remainder of the cast after anatomic ridges have been removed and luted with sticky wax, and the assembly is inserted into a previously formed thermoplastic box and poured to make a new corrected cast.

Acrylic Resins↗
PubMed1994

The effects of sterilization on addition silicone impressions in custom and stock metal trays.

Five groups of addition silicone impressions (four made in custom autopolymerizing acrylic resin trays and one in stock metal rim-lock trays) were made of a stainless-steel master die. The first group (control group) was not sterilized. The second group was sterilized in an ethylene oxide gas autoclave, the third group in a steam autoclave, and the fourth and fifth groups by immersion for 12 hours in 2% glutaraldehyde. Casts made from each sterilization group were found to be significantly different from control impressions by multivariate analysis of variance and should not be used to fabricate prostheses.

Dental Impression Materials↗
PubMed1994

Duplicating an existing complete denture to make a replica.

Sometimes it is desirable to make a few changes when making new complete dentures for a patient who has been wearing old dentures for a long time and is satisfied with them. Replica dentures can be made for these patients, and success with the new dentures can be assured. A procedure is presented for duplication of the old dentures to make replicas.

Calcium Sulfate↗
PubMed1993

A SEM study of denture plaque and oral mucosa of denture-related stomatitis.

The aim of this study was to compare the morphology of denture plaque and adjacent palatal mucosa in five subjects with denture-related stomatitis and a control group of five healthy subjects. Scanning electron microscope examination of copper plate replicas, which preliminary studies established were superior to epoxy resin replicas, showed that there were no consistent differences between the morphology of denture plaque and adjacent mucosa in the denture-related stomatitis group and control group. In each, the surface of the denture plaque was composed predominantly of coccoid- and rod-shaped bacteria with only some yeast cells. The mucosa was largely devoid of microorganisms and individual epithelial cells were shedding from its surface.

Bacteria↗
PubMed1993

Copper plate replica SEM of developing dental plaque in monkeys (Macaca fascicularis).

The aim of the study was to examine the development of dental plaque in macaque monkeys (Macaca fascicularis). Copper plate replicas were constructed from impressions of the labial surface of one of the upper central incisor teeth after tooth cleaning and when plaque had accumulated for 12, 24 and 48 h in each of five animals. Scanning electron microscope examination of the replicas showed that bacteria were present on the tooth surface as scattered individual cells, which after 24 h had formed a continuous layer. Both coccoid and filamentous bacteria were visible in 48-hour-old plaque. Such a rapid accumulation of potentially periodontopathic dental plaque emphasizes the importance of regular and meticulous oral hygiene.

Animals↗
PubMed2006

Simplified impression technique for implant-supported crowns.

Dental implants have become a widely accepted method for replacing missing teeth. While many oral surgeons and periodontists are actively involved in the surgical placement of dental implants, many general dentists do not perform such placements because they are intimidated by the seeming complexity of the procedures and hardware. In response to perceived complexity, dental implant manufacturers have developed implant systems that facilitate and simplify impression taking. As such simplified protocols become more common, implant-borne restorations will become more widely used by the profession as a routine treatment modality. This article describes a simple technique for restoring a single-tooth posterior Straumann implant.

Crowns↗
PubMed2004

A selective-pressure impression technique for the edentulous maxilla.

This article describes a selective-pressure impression technique for the edentulous maxilla that is intended to compensate for the polymerization shrinkage of heat-polymerized polymethyl methacrylate resin and provides improved palatal adaptation of the definitive denture base.

Dental Impression Materials↗