CLASSIC ARTICLE
Fundamentals of extracoronal tooth preparation.
Part I.
Retention
and resistance form
Dennis B.
Gilboe, DDS,a
and Walter R.
Teteruck, DDS, MSDb
College of Dentistry, University of Saskatchewan, Saskatoon, Saskatchewan, Canada
The...
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CLASSIC ARTICLE
Fundamentals of extracoronal tooth preparation.
Part I.
Retention
and resistance form
Dennis B.
Gilboe, DDS,a
and Walter R.
Teteruck, DDS, MSDb
College of Dentistry, University of Saskatchewan, Saskatoon, Saskatchewan, Canada
The differential selection and application of retention and resistance form in tooth preparation depend
upon the individual clinical situation.
Since the ‘‘textbook ideal’’ is not often encountered clinically, knowledge of basic principles and factors is mandatory for
the successful preparation of extracoronal restorations.
Black1
astutely recognized and stressed the importance of these two basic characteristics.
He stated:
‘‘Resistance form is that shape given to a cavity intended
to afford such a seat for the filling as will best enable it to
withstand the stress brought upon it in mastication.
Retention form is the provision for preventing it from
being dislodged.
’’
More recent concepts tend to emphasize the duplication of a preconceived
Less