{'fraction_non_alphanumeric': 0.02362609142270159, 'fraction_numerical': 0.019517205957883924, 'mean_word_length': 5.407894736842105, 'pattern_counts': {'":': 0, '<': 0, '<?xml version=': 0, '>': 0, 'https://': 0, 'lorem ipsum': 0, 'www.': 0, 'xml': 0}, 'pii_count': 0, 'substrings_counts': 0, 'word_list_counts': {'cursed_substrings.json': 0, 'profanity_word_list.json': 0, 'sexual_word_list.json': 0, 'zh_pornsignals.json': 0}}
CHAPTER 7 Digital protocol for reference-based guided surgery and immediate loading : A prospective clinical study

Aim: The purpose of this study was to evaluate the performance of a computer-aided threedimensional planning protocol in combination with previously inserted reference miniimplants and CAD/CAM technology to restore completely edentulous patients. The study evaluated implant and superstructure survival in a prospective clinical trial. Materials and Methods: The plan protocol called for treatment of 35 patients who were edentulous in either jaw. Mini-implants were used to establish a platform for computerized tomography and the fixation of the surgical template. The planning software based on 3D simulation was used to plan ideal implant placement, digitally integrating the future prosthetic and anatomic situations to design the final superstructure. Results: A total of 34 patients, 20 with edentulous maxillae, 10 with edentulous mandibles and 5 patients with edentulism in both arches, were treated. All patients received definitive prostheses on the day of surgery. The majority of patients treated in maxilla underwent a sinus graft procedure to achieve sufficient bone to place implants. A total of 40 final superstructures were inserted and immediately loaded. Of the 240 inserted implants 229 survived (95.4%), with 146 (93.6% survival) and 83 (98.8% survival) implants in the maxillary and mandibular jaws, respectively. Of the 11 implants that failed in the maxilla, 10 occurred in the patients with augmented sinus. All the final restorations demonstrated clinically acceptable fit. Conclusions: When using implant and superstructure survival, reference based guided surgery seems to be a reliable treatment option for treatment of edentulous patients. The CAD/CAM superstructure, inserted and loaded immediately after guided implant insertion, demonstrated acceptable fit to the underlying implants. Chapter	
  7