This study is a prospective randomized controlled study of patients who come to the University. The aim is to evaluate the success rate of selective removal of carious tissue in deep lesions of posterior teeth. Three different materials will be used as liners (VitreBond ™Plus, BioDentine™, and Theracal™ LC). Post-operative pain, clinical, and radiographic success will be evaluated at one, two, and five-year follow-up. The null hypothesis is that there will be no statistically significant differences in rates of successful treatment with the three materials used.

Inclusion Criteria:

• Patients that demonstrate understanding of the study and willingness to participate as evidenced by signing the voluntary informed consent and received a signed and dated copy of the informed consent form.
• Understands and is willing to comply with all study procedures and restrictions.
• Not presence of clinically significant and relevant abnormalities of clinical history or oral examination.
• Diagnosis of normal pulp or reversible pulpitis.
• No presence of periapical periodontitis
• Posterior teeth

Exclusion Criteria:

General: Patients with systemic diseases, diabetes, immunocompromised and pregnant women, or any clinically significant or relevant oral abnormalities.

Specific: Impossibility of restoration, diagnosis of irreversible pulpitis or necrosis, preoperative pain