A
porcelain fracture rate of porcelain-fused-to-metal (PFM) restorations of up to
9 percent requires an reasonable and effective intraoral repair system.
Intraoral silicoating techniques for adhesion to metal and ceramic surfaces
resulted nearly always in an increased bond strength. First clinical results of
intraoral repairs with airblast handpieces have shown that this technique seems
to be capable as a medium term alternative to a replacement of the restoration.
The intraoral silicoating technique with airblasting offers numerous other
possibilities for use in adhesive dentistry: the conditioning of surfaces of
fixed restorations, the placement of orthodontic brackets and retainers.
Furthermore the conditioning of ceramic core build ups, implant abutments and
the modification of preexisting metal core build ups. The first clinical
applications on these fields of adhesive technique are promising. The
tribochemical silicoating presents an easy-to-use, economical and effective
technique for the repair of fractured veneering material in the oral cavity.
The authors have been using this technique in a clinical study since 1993 to
repair fractured veneering materials on metal alloy substructures. The
increasing use of all-ceramic substructures made of acid-resistant high
strength ceramics offers an additional field of application. For the past four
years, the intraoral silicoating technique has also been regularly used in
other areas of adhesive dentistry. The clinical recall examinations to date are
promising. The patient´s health risk during the air-blasting procedure is
considered to be minimal.
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