DIGITAL WORKFLOW USING NATURAL ALGORITHMS FOR CAD/CAM CERAMIC ANTERIOR AND OCCLUSAL VENEERS TO RESTORE BIOCORROSION: A 2-YEAR FOLLOW-UP CASE REPORT

Abstract

Introduction: Biocorrosion is a multifactorial disorder that causes dissolution of hard tissues by extrinsic/ intrinsic factors. Traditionally, restoring biocorrosion wear involves invasive preparations. Objective: This case report aims to describe the rehabilitation of biocorrosion with a minimally invasive approach (thin occlusal and vestibular ceramic laminates) in a fully digital workflow using natural algorithms. Case report: A 23-year-old patient was presented to clinic with generalized tooth wear associated to dentin hypersensitivity. In anamnesis, eating disorders and acid food consumption were reported, supporting the diagnosis of biocorrosion. The restoration of worn tissues involved an additive approach (minimizing additional wear), using a face guided planning protocol and a natural tooth anatomy database to achieve greater naturalness at the final restorations. Rehabilitation of worn tissues was performed using occlusal, anterior ceramic veneers and additive composite restorations. The patient’s natural teeth characteristics were preserved, restoring aesthetic and self-esteem, and after 2- year follow-up the patient remains very satisfied. Conclusion: Additive approaches involving the least amount of tissue wear are essential for the biocorrosion restoration. In addition, the integration of natural algorithms to digital workflows brings more aesthetic and precision to definitive restorations, overcoming one of the main challenges of milled aesthetic restorations: the naturalness.