Clinical Outcomes of Immediate Implants With or Without a Volume-stable Collagen Matrix

Inclusion Criteria: \- Presence of a single failing tooth in the esthetic region (second premolar to contralateral second premolar), the adjacent teeth should be present and without any dental pathologies. Exclusion Criteria: * Patients who are heavy smokers (more than 10 cigarettes/day); * Patients who suffer from any systemic diseases that could negatively influence wound healing; * Patients who received head and neck radiation treatment; * Patients who have a full contraindication to implant surgery; * Patients who have uncontrolled periodontal disease; * Patients who show a full mouth plaque and bleeding score higher than 25%; * Patients who have deficient extraction sockets according to the classification of Juodzbalys et al. 2008. * Patients with known allergy, sensitivity or intolerance to collagen * Patients who are pregnant or who are breastfeeding