**1. Introduction**

*1.1. Research Objectives*

The object of the study is new prosthetic inlays in non-carious cervical lesions (NCCLs). They suggest the expansion of the cavity of the NCCLs.

Research objectives:


The development of a new method for replacing NCCL and a preliminary assessment of the effect of restoration materials on the tooth-inlay system deformation are the main goals of this study. This method can increase the restorations' service life and their aesthetics. An NCCL is often combined with gingival margin recession. The new treatment method allows the creation of a playground for attaching the gingival margin. The evaluation of the restoration materials' performance is also an important factor.

The work includes only computational experiments at this stage. All studies are in silico. The analysis of therapy parameters and the preliminary selection of materials occur on numerical models.
