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Primary Stability/Mobility of 1-Stage and 2-Stage Dental Implants: A Comparative In Vitro Study

Gülay, Gülsah DDS*; Asar, Neset Volkan DDS, PhD; Tulunoglu, Ibrahim DDS, PhD; Turkyilmaz, Ilser DDS, PhD§; Wang, Hom-Lay DDS, MS, PhD; Tözüm, Tolga F. DDS, PhD

doi: 10.1097/ID.0b013e3182661615
Basic and Clinical Research
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Purpose: To evaluate the primary stability of 1-stage (nonsubmerged) and 2-stage (submerged) implants via newest wireless resonance frequency (RF) analyzer and newer wireless mobility measuring (MM) device.

Materials and Methods: Six 1-stage dental implants with internal hex connection and six 2-stage dental implants, 4.1 mm in diameter and 11.5 mm in length, were inserted bilaterally into the first premolar, second premolar, and first molar regions of 6 standard mandibular transparent self-curing acrylic resin models. After that, the periimplant circular bone defects were created in millimeter increments ranging between 0 and 5 mm to the same extent on all implants.

Results: Implant stability quotient values significantly decreased at 1-stage and 2-stage implants when periimplant defects increased. Similar implant stability quotient values were found for both implant types; however, significantly lower MM values were noted for 2-stage implants. Irrespective of implant systems, the results indicated a significant association between wireless RF analyzer and wireless MM device.

Conclusion: Both wireless RF analyzer and wireless MM device were adequate in assessing implant stability. There was no difference between 2-stage and 1-stage implant systems, except lower MM values were noted for nonsubmerged implants.

*PhD Student, Department of Prosthodontics, Faculty of Dentistry, Hacettepe University, Ankara, Turkey.

Clinical Instructor, Department of Prosthodontics, Faculty of Dentistry, Gazi University, Ankara, Turkey.

Professor, Department of Prosthodontics, Faculty of Dentistry, Hacettepe University, Ankara, Turkey.

§Assistant Professor, Dental School Implant Clinic, Department of Comprehensive Dentistry, The University of Texas Health Science Center, San Antonio, TX.

Professor and Director, Graduate Periodontics, Department of Periodontics and Oral Medicine, School of Dentistry, The University of Michigan, Ann Arbor, MI.

Associate Professor, Department of Periodontology, Faculty of Dentistry, Hacettepe, University, Ankara, Turkey.

Reprint request and correspondence: Tolga F. Tözüm, DDS, PhD. Department of Periodontology, Faculty of Dentistry, 3rd Floor, Hacettepe University, Sihhiye, 06100 Ankara, Turkey, Phone: +90 312 305 2237, Fax: +90-312-310-4440, E-mail: ttozum@hacettepe.edu.tr

© 2012 Lippincott Williams & Wilkins, Inc.