How to Use Perma-Ret to Improve Denture Retention

Today’s nano-composite, highly cross-linked and hybrid denture teeth continually pose a retention problem in cases with limited space once the bondable lingual layer of PMMA has been removed. Implant treatment modalities with their rigid foundation and opposition exacerbate these compromised bonds.

To solve the problem, technicians often use bonding primers, diatoric retention or slot the lingual but I’ve discovered a better solution: Perma-Ret, a pin retention system from Preat Corp. The kit includes twist drills, a drill and wire holder, collets and 80mm-long threaded silver wire (see Figure 1). Similar to the way metal pins are used to retain porcelain denture teeth, the Perma-Ret wire is threaded into a drilled hole in the denture teeth; the wire is small and unobtrusive and provides mechanical retention between the teeth and the acrylic base. The placement technique is easy to master and the kit pays for itself by preventing repairs on warrantied dentures....