A synthetic, resorbable bone substitute with a biphasic formulation based on ß-Tricalcium Phosphate (ß-TCP) + Hydroxyapatite (HA). Available in two formulations, they allow for control of the pace of bone grafting procedures: - RTR + 80/20 (80% β-Tricalcium Phosphate / 20% Hydroxyapatite): promotes natural bone formation quickly. Resorption takes 3-9 months. - RTR + 40/60 (40% β-tricalcium phosphate / 60% hydroxyapatite): fully respects the rate of natural bone formation. Resorption in 9-12 months. Indications: post-extraction socket preservation, periodontal defects, intra-bony defects, peri-implant defects, sinus lift, ridge augmentation and cystic cavities.