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Biomedical subjects

R L Lambert

Publications and source records attributed to R L Lambert.

At least 19 recordsLinked to original sources
PubMed1990

Dentin bonding.

Explore the source record for details and available documents.

Dental Bonding↗
PubMed1989

Variations in the design of #330 dental burs.

This evaluation consisted of a photographic evaluation of eight brands of commercially available #330 burs; comparisons were made to the standard as set by Dr Miles Markley. They were also evaluated as to their meeting ADA Specification No 23 for dental burs. In a second portion of the study, the burs were used to prepare channels in extracted teeth, and the pattern produced was evaluated. The results indicate that there is a great difference in the shape of the burs produced by the various manufacturers, as there was in the pattern they produced in preparing tooth structure.

Dental Instruments↗
PubMed1985

Cantilever fixed prosthesis replacing the maxillary lateral incisor: design consideration.

A variation in design of a cantilever fixed prosthesis is suggested using a wrap-around configuration of the mesial surface of the lateral incisor pontic. The preparation on the canine is modified with one or more shallow grooves to provide additional resistance to rotational forces. All occlusal contacts on the lateral incisor pontic are avoided.

Denture Design↗
PubMed1985

Pin amalgam restoration and pin amalgam foundation.

The principles of cavity preparation, retention, pin placement, and finishing of the pin amalgam restoration differ in several respects when applied to the pin amalgam when it is intended to serve as a foundation for a cast restoration. A more conservative extension and removal of undermined enamel is indicated because the amalgam will be covered with a cast restoration. The axial reduction required during crown preparation frequently reduces retention of the pin amalgam foundation; therefore, it is necessary to plan for those alterations during the cavity preparation. The degree of finishing and polishing required is determined by the length of time the pin amalgam foundation is expected to function as an interim restoration.

Bicuspid↗
PubMed1975

Retentive properties of stainless steel pins cemented with ethyl cyanoacrylate.

The bonds provided by the ethyl cyanoacrylate is only one fifth as strong as that obtained with a self-threading pin. This retention is comparable to that of zinc phosphate-cemented pins. The simplicty and quick-setting reaction are definite advantages; however, long-term studies are needed prior to clinical acceptance.

Cyanoacrylates↗
PubMedDate not supplied

The effect of multiple layers of die-spacer on crown retention.

The application of die-spacer to crown preparation dies prior to the fabrication of the cast crown is an acceptable procedure to improve the fit of the restoration. Previous studies have shown that the retention of the restoration will be improved, unchanged, or reduced when an appropriate thickness of die-spacer is used. No studies have determined the effect on retention if excessive die-spacer is used. This study evaluated the effect of increasing die-spacer thickness on the retention of cast full crowns. Cast copings were fabricated on dies coated with either 0, 4, 8, 12, or 16 coats of die-spacer, cemented on the respective teeth, and removed using an Instron Universal Testing Machine. There were no statistically significant differences (P < or = 0.05) between the mean force required to remove the cemented copings. It appears that increasing the application of die-spacer up to 16 coats (151 micrometers) does not adversely affect the retention of cemented cast copings.

Analysis of Variance↗