Partial Extraction Therapy: Applications in Full-Arch Dental Implant Therapy
Partial extraction therapy (PET) is a set of surgical techniques that preserves a portion of the patient’s own root structure to maintain blood supply derived from the periodontal ligament complex in order to maintain the periodontium and peri implant tissues during restorative and implant therapy. PET includes the socket shield technique (SST), proximal shield technique (PrST), pontic shield (PtST), and root submergence technique (RST). In a traditional hybrid technique, total extraction and full-arch dental implant therapy often require significant bone reduction and palatal/lingual implant placement. In addition, postextraction preservation of the ridge architecture is a major challenge. This case series demonstrates the use of a combination of PET techniques with digital implant planning and guided implant surgery to achieve highly esthetic outcomes in full-arch implant therapy.