The aim of this clinical study is to compare CAD-CAM and 3D restorations in individuals with two hard tissue losses or restorations in their mouths. The main question it aims to answer is: Is there a difference between CAD-CAM and 3D restorations according to FDI criteria? Researchers will compare participants to see if there is a difference between the two restorations according to FDI criteria. In this split-mouth study, participants will be randomized to receive a CAD-CAM partial restoration on one tooth and a 3D partial restoration on the other tooth.

İncluiding:

-- Patients with periodontally stable and appropriate oral hygiene habits without serious systemic diseases that preclude restoration. - Male and female patients with hard tissue loss in their mouth or with 2 teeth in need of restoration replacement (eligibility for split-mouth design). - People who can comply with the treatment and volunteer for follow-up for 2 years-

Exclusion Criteria:

Patients with systemic conditions that may affect the study process (e.g. diabetes, autoimmune diseases).

• Patients with excessive bruxism or parafunctional habits.
• Pregnant or lactating women.
• Patients with gum disease or severe bone loss.
• Patients with a history of allergic reactions.