Author

Ali M. Asad

Abstract

Although pins have been used since the 1800's for retention of dental restorations, their widespread use had been limited because supporting techniques such as impression, die materials, better handpieces and drills have only been perfected in the last two decades.

The pin technique allows for greater retention of restorative materials which otherwise might require considerable reduction of sound tooth substance; this is particularly paramount when insufficient coronal tooth structure is present. Also, the placing of pins in divergent directions gives excellent retention. Pin-retained castings reduce the need for deep cavity preparation in some cases.

Pins are useful in stabilizing hypermobile teeth, in that they allow for tooth anchorage otherwise difficult to achieve unless crowns are fabricated and splinted. In cases of placing a post in an endodontically treated tooth, pins may be used to support the post. Malpositioned teeth which in no way would "draw in conventional bridge fabrication methods, can be used for abutments by using a variety of pin retention techniques.

Factors which influence any technique are number of pins, length, diameter, surface characteristics, direction, dimensional tolerance, and cementing material; typically, two to four pins are placed in 2-3 mm deep channels.

Department

Dentistry

School

Graduate School

First Advisor

Judson Klooster

Second Advisor

Robert A. James

Third Advisor

William S. Seibly

Fourth Advisor

Douglass B. E. Roberts

Fifth Advisor

William R. Rothgeb

Degree Name

Master of Science (MS)

Degree Level

M.S.

Year Degree Awarded

1975

Date (Title Page)

12-1975

Language

English

Library of Congress/MESH Subject Headings

Dental Pins; Dentistry, Operative

Type

Thesis

Page Count

v; 20

Digital Format

PDF

Digital Publisher

Loma Linda University Libraries

Usage Rights

This title appears here courtesy of the author, who has granted Loma Linda University a limited, non-exclusive right to make this publication available to the public. The author retains all other copyrights.

Collection

Loma Linda University Electronic Theses and Dissertations

Collection Website

http://scholarsrepository.llu.edu/etd/

Repository

Loma Linda University. Del E. Webb Memorial Library. University Archives

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