Posterior rehabilitation using 3D-printed dental implants and synthetic regenerative membranes

Abstract

Aim: To describe through a clinical case report the surgical sequence of rehabilitation with 3D-printed implantsassociated with maxillary sinus floor lift with synthetic regenerative materials, including biphasic bioceramic.Case Report: Patient had an agenesis of the upper left premolars (#12 and #13), a vertical bone deficiencycaused by maxillary sinus’ pneumatization, and a horizontal alveolar resorption around the missing teeth area.During the surgical procedures, incisions, detachment, and osteotomy were performed in the lateral region ofthe maxillary sinus. The sinus membrane was detached and lifted 10 mm. Then, a thick poly(dioxanone)-basedsynthetic resorbable membrane (Plenum) was inserted and adapted inside the sinus to protect the sinus membrane.After the osteotomies with sub-instrumentation, 3D-printed implants (Plenum) were installed in the #12 area(3.5mm x 11.5 mm; 30N) and #13 area (4.0mm x 10mm; 20N). The maxillary sinus was entirely filled with abiphasic bioceramic,HA/B-TCP (70:30) 500-1000 um (Plenum) and covered by the same synthetic resorbablemembrane. Connective tissue graft from the palatal area was positioned internally to the flap and stabilized withsutures to improve the vestibular tissue architecture. The entire surgical wound was sutured, and the tissuesstabilized. No complications occurred in the postoperative period. Conclusion: The use of synthetic regenerativememberane and 3D-printed implants seems to be a promising option in areas of deficient bone remnants. KEYWORDSDental Implants; 3D Printing; Maxillary Sinus; Sinus Floor Augmentations; Tissue Grafting.