Clinical Assessment

The goal of this clinical trial is to learn whether onlay restorations produced by additive manufacturing \[three-dimensional (3D) printing\] and subtractive manufacturing \[Computer-Aided Design/Computer-Aided Manufacturing (CAD/CAM) milling\] perform equally well in vital posterior teeth. The main questions it aims to answer are: * Do 3D printed onlay restorations show similar marginal adaptation and clinical performance compared to CAD/CAM milled onlays? * Are there any differences in biological compatibility, surface properties, or postoperative sensitivity between the two techniques over time? Researchers will compare onlay restorations fabricated with 3D printing and CAD/CAM milling using a split-mouth study design. Participants will: * Receive one onlay restoration produced by 3D printing and another produced by CAD/CAM milling, placed on opposite sides of the mouth * Have checkups at baseline (1st week), 6 months, 12 months, and 18 months after treatment * Be evaluated using the Fédération Dentaire Internationale (FDI) criteria for marginal adaptation, surface quality, anatomical form, and biological compatibility

This is a prospective, non-interventional, single arm, international multicenter study in which up to 120 adult participants with kidney failure requiring regular hemodialysis through arteriovenous (AV) access (AV fistula or graft) will be recruited and evaluated using the PatenSee system. Data captured on the PatenSee system will be analyzed and evaluated against standard of care clinical monitoring of AV accesses.