title: Immediate occlusal loading of immediately placed implants supporting fixed restorations in completely edentulous arches: a 1-year prospective pilot study.
abstract: BACKGROUND
  The aims of this pilot study were to evaluate the efficacy of treatment consisting of the immediate loading of implants placed immediately after tooth extraction in full-arch restorations and to compare the clinical and radiographic outcomes of implants placed in healed versus postextraction sites in the same group of patients.
  
  
  METHODS
  Twenty-three patients who needed full-arch restorations were treated. One hundred forty-four implants were placed: 59 after tooth extraction (test group) and 85 in healed sites (control group). Within 48 to 72 hours of implant placement, nine maxillary and 15 mandibular arches received screw-retained fixed prostheses, consisting of a titanium framework fabricated with a computer-aided design and manufacturing techniques and composite resin teeth. The insertion torque for implants was >or=30 Ncm. Implant stability measurements (ISQ) and radiographs of the marginal bone level (MBL) change were performed at prosthesis delivery and after 1 year.
  
  
  RESULTS
  One implant in the test group and one implant in the control group failed, giving a cumulative success rate of 98.6%; the prosthesis survival rate was 100%. At the 1-year follow-up, no statistically significant difference was found between the control and test sites with respect to MBL change (0.47 +/- 0.18 mm versus 0.57 +/- 0.27 mm) or mean ISQ values (62.24 +/- 1.92 versus 61.34 +/- 2.15).
  
  
  CONCLUSIONS
  These preliminary data suggest that immediate loading of implants placed immediately after extraction may be a viable treatment option for edentulous arches when implants are stable at insertion and are rigidly splinted with screw-retained titanium-resin prostheses.
authors.affiliation: Department of Odontostomatological Sciences, University of Bologna, Bologna, Italy. checcopieri@yahoo.it
authors.forename: Francesco
authors.initials: F
authors.lastname: Pieri
authors.forename: Nicolò Nicoli
authors.initials: NN
authors.lastname: Aldini
authors.forename: Milena
authors.initials: M
authors.lastname: Fini
authors.forename: Giuseppe
authors.initials: G
authors.lastname: Corinaldesi
mesh_terms: D000368:Aged; D000539:Alveolar Process / Q000000981:diagnostic imaging; D003188:Composite Resins; D017076:Computer-Aided Design; D000044:Dental Abutments; D003758:Dental Implantation, Endosseous; D015921:Dental Implants; D003764:Dental Materials; D019094:Dental Prosthesis, Implant-Supported; D003779:Denture Design; D003781:Denture Retention; D003825:Denture, Complete, Immediate; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D007575:Jaw, Edentulous / Q000534:rehabilitation / Q000601:surgery*; D008297:Male; D008334:Mandible / Q000000981:diagnostic imaging / Q000601:surgery; D008437:Maxilla / Q000000981:diagnostic imaging / Q000601:surgery; D008875:Middle Aged; D016348:Osseointegration / Q000502:physiology; D010865:Pilot Projects; D011446:Prospective Studies; D011859:Radiography; D014025:Titanium; D014081:Tooth Extraction; D020390:Tooth Socket / Q000503:physiopathology / Q000601:surgery; D014093:Tooth, Artificial; D016896:Treatment Outcome; D014945:Wound Healing / Q000502:physiology
chemical_list: D003188:Composite Resins; D015921:Dental Implants; D003764:Dental Materials; D014025:Titanium