Journal of Oral Implantology June 2012 - (Page 239)

RESEARCH Survival and Success Rates of Immediately and Early Loaded Implants: 12-Month Results From a Multicentric Randomized Clinical Study Tommaso Grandi, DDS1* Giovanna Garuti, DDS1 Paolo Guazzi, DDS2 Luciano Tarabini, DDS3 Andrea Forabosco MD1 Our objective was to compare survival and peri-implant bone levels of immediately nonocclusally vs early loaded implants in partially edentulous patients up to 12 months after implant placement. Eighty patients (inclusion criteria: general good health, good oral hygiene, 30–65 years old; exclusion criteria: head and neck irradiation/cancer, pregnancy, uncontrolled diabetes, substance abuse, bruxism, lack of opposing occluding dentition, smokers .10 cigarettes/day, need for bone augmentation procedures) were selected in 5 Italian study centers and randomized into 2 groups: 40 patients in the immediately loaded group (minimal insertion torque 30 Ncm) and 40 patients in the early loaded group. Immediately loaded implants were provided with nonoccluding temporary restorations. Final restorations were provided 2 months later. Early loaded implants were provided with a definitive restoration after 2 months. Peri-implant bone resorption was evaluated radiographically with software (ImageJ 1.42). No dropout occurred. Both groups gradually lost peri-implant bone. After 12 months, patients of both groups lost an average of 0.4 mm of peri-implant bone. There were no statistically significant differences (evaluated with t test) between the 2 loading strategies for peri-implant bone level changes at 2 (P ¼ .6730), 6 (P ¼ .6613) and 12 (P ¼ .5957) months or for survival rates (100% in both groups). If adequate primary stability is achieved, immediate loading of dental implants can provide similar success rates, survival rates, and peri-implant bone resorption as compared with early loading, as evaluated in the present study. Key Words: early loading, immediate loading, partial edentulism, dental implants Department of Integrated Activities of Specialized Head-Neck Surgery, University of Modena and Reggio Emilia, Italy. 2 Private practice, Modena, Italy. 3 Private practice, Carpi (MO), Italy. * Corresponding author, e-mail: tommaso.grandi@unimore.it DOI: 10.1563/AAID-JOI-D-10-00149 1 Journal of Oral Implantology 239

Table of Contents for the Digital Edition of Journal of Oral Implantology June 2012

Editorial
Relationships Between the Gonial Angle and Mandibular Ramus Morphology in Dentate Subjects: A Panoramic Radiophotometric Study
A Comparison of Peripheral Marginal Bone Loss at Dental Implants Measured With Conventional Intraoral Film and Digitized Radiographs
Microstrains Around Standard and Mini Implants Supporting Different Bridge Designs
Surface and Biomechanical Study of Titanium Implants Modified by Laser With and Without Hydroxyapatite Coating, in Rabbits
Survival and Success Rates of Immediately and Early Loaded Implants: 12-Month Results From a Multicentric Randomized Clinical Study
Posttreatment Quantification of Patient Experiences With Full-Arch Implant Treatment Using a Modification of the OHIP-14 Questionnaire
Correlation Between Occlusal Forces and Marginal Bone Levels Around Implant- Retained Restorations: A Clinico-Radiological Study
The Influence of Maximum Bite Force on Patient Satisfaction and Quality of Life of Patients Wearing Mandibular Implant Overdentures
Guided Flapless Surgery With Immediate Loading for the High Narrow Ridge Without Grafting
Estimation of the Safe Distance Between the Implant and an Adjacent Tilted Implant Using Trigonometry
Chair-Side Fabrication of a Fixed Implant-Supported Prosthesis in an Edentulous Mandible From A Diagnostic Wax-Up: A Clinical Report
A Comparison Between Screw- and Cement-Retained Implant Prostheses. A Literature Review

Journal of Oral Implantology June 2012

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