Restoring deep, extensive carious lesions and subgingival situations can be challenging
due to difficulties in placing matrices and achieving isolation. This article describes
a technique utilizing individually designed digital matrices for challenging cases,
offering an alternative solution aiding the reconstruction of the missing dental structures.
Three cases are presented with difficult subgingival cavities or severe destruction
of dental hard tissues, where a custom-made matrix was used to bridge the challenges
of matrix placement and isolation. Digital impressions of dental arches were taken,
and custom-made metal instruments were manufactured through computer-aided design
and subsequent sintering. These instruments aided the elevation of deep margins and
the reconstruction of the teeth. The presented technique yielded favorable results
in terms of accuracy and feasibility for these challenging cases. However, it should
be noted that the procedure requires additional time and incurs costs for the necessary
elements.
