Nonsurgical repair of perforation defects

By Lemon RR

Date: 01/1992
Journal: Dent Clin North Am


  • Describe the use and limitations of internal matrix for non-surgical perforation repair


  • N= 16 articles (from 1971- 1986) reviewed and summarized


  • An internal matrix will help control repair material from extruding (most common reason for failure) and aid in hemostasis (increasing the repair material’s sealing ability)
  • Large differences in the success of repair materials have been reported in the literature and may be due to operator skill with the various repair materials
  • Use of an internal matrix:
    • may be utilized in accessible, visible locations, such as the furcation and in coronal and middle thirds of straight canals
    • is contraindicated in strip perforations and when perforation is coronal to the crestal bone
  • Major limitations of non-surgical perforation repair include visibility (extent and location of defect), accessibility (within the narrow confines of the canal space), and maintaining patency of the canal while manipulating matrix and repair materials

Clinical Significance:

Perforations in visible, accessible locations may be repaired with the aid of an internal matrix to  increase prognosis by reducing hemorrhage and contamination affecting the repair material and preventing extrusion of the repair material