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At least 541 records · Page 30Linked to original sources
PubMed1986

Predictable diastema reduction with filled resin: diagnostic wax-up.

A method for predictably altering anterior esthetics with composite resins is presented. The diagnostic wax-up is the key element. It is used to make a patient presentation cast and to customize resin forms. The resin forms are used to reproduce the predicted tooth form in the mouth quickly and accurately. The method should alert the dentist to the technical feasibility of the planned treatment and the difficulties that may be encountered. In addition, it should alleviate potential misunderstanding and disappointment of the patient. Finally, diagnostic waxing is time saving and simplifies the chairside procedure.

Composite Resins↗
PubMed1991

Resin-bonded etched castings with extracoronal attachments for removable partial dentures.

An innovative method of using resin-bonded etched cast extracoronal attachments as an esthetic alternative in removable prosthodontics is presented. The technique is simple, conservative, inexpensive, and not time-consuming. The steps of abutment teeth preparation, casting of a precise framework, and cementation are technique-sensitive, and short cuts are not well tolerated. The existing clinical results indicate that the technique is a valuable adjunct in the field of esthetic removable partial prosthodontics.

Acid Etching, Dental↗
PubMed2003

Current concepts for determining the postpalatal seal in complete dentures.

PURPOSE: In 2001, a survey of U.S. dental schools was conducted to determine the concepts and techniques used for establishing the postpalatal seal (PPS) in a predoctoral dental curriculum. MATERIALS AND METHODS: The questionnaire was mailed to the chairperson of the prosthodontic/restorative departments of 54 U.S. dental schools. Of these, 44 returned the completed survey, resulting in a response rate of 82%. RESULTS: Results from this survey show that 80% of the schools are teaching a combination of phonation with other methods for locating the vibrating line. The 1 vibrating line concept for establishing the PPS is taught by 80% of schools; 77% of these schools locate the posterior termination of the maxillary denture on the vibrating line. Carving the PPS in the maxillary master cast is taught by 95% of the schools. Most of the schools teach the students to carve the PPS to a depth of 1.0-1.5 mm in the maxillary master cast. Compressibility of the palatal tissues is a consideration during PPS carving for 91% of the schools. The butterfly pattern is the most frequently (75%) described pattern for PPS carving. CONCLUSIONS: There is some variability from school to school on performing the PPS in the maxillary denture, although some trends are evident.

Curriculum↗
PubMed2004

Intracanal placement of calcium hydroxide: a comparison of techniques, revisited.

The goal of this in vitro study was to compare the effectiveness of three different placement techniques of calcium hydroxide paste in a curved canal. An acrylic resin block with a 44-degree curvature was instrumented to a #40 Flex-R file. The canal was filled with radiopaque calcium hydroxide paste using the following techniques: group 1, the paste was injected with an Ultradent tip; group 2, the paste was injected as in group 1 and followed by a size 35 Lentulo to working length; and group 3, the paste was placed with a size 35 Lentulo only, to working length. Each technique was performed 25 times. The radiodensity of the simulated canal was measured at 1, 3, 5, and 7 mm from the canal terminus. At 1 mm, the Lentulo was significantly better than the other two techniques. At 3 mm, the Lentulo technique and the combined technique were better than the Ultradent tip alone.

Calcium Hydroxide↗
PubMed1991

A method for the construction of simulated root canals in clear resin blocks.

A method for the construction of simulated root canals in clear resin blocks is described. The canals are inexpensive, simple to produce and are of high enough quality for use in both undergraduate and continuing education. With minor modifications, the canals can also be used for research, particularly during the assessment of instruments and preparation techniques.

Dental Pulp Cavity↗
PubMed1979

Levels of mercury and silver in dust from the trimming of amalgam dies.

The levels of mercury and silver in dust arising from the trimming, i.e. grinding, of amalgam dies in dental laboratories have been measured. In breathing air close to the workpiece, the mercury and silver contents exceeded the threshold limit values for short-term exposure by factors of aboit 60 and 400 in cases when local ventilation was not in use. With efficient local exhaust systems enabling a dust reduction of about 94%, the short-term exposure limit values for mercury and silver were exceeded by factors of about 4 and 20 respectively. Mercury and silver were assayed quantitatively by means of nuclear chemical analysis. A major part of the amalgam dust consisted of respirable particles. The collected dust comprised about 80% amalgam and 20% particulate matter from grinding wheels and stones according to SEM and EDAX measurements.

Air Pollutants↗
PubMed2003

Diagnostic and technical approach to esthetic rehabilitations.

The success of an esthetic rehabilitation depends on the understanding of the patient's needs and on effective communication among the entire dental team. The involvement of the dental technician since the beginning of the treatment plan is one of the keys for success. This article describes a systematic approach to oral rehabilitations involving esthetic areas. Technical suggestions for the construction of the diagnostic wax-up, the provisional, and the final ceramic restorations are illustrated in a logical sequence.

Crowns↗