Journal of Oral Implantology August 2014 - (Page 438)
RESEARCH
Longitudinal Implant Stability Measurements Based on
Resonance Frequency Analysis After Placement in Healed
or Regenerated Bone
Giorgio Deli, DDS, MD1
Vincenzo Petrone, DDS1
Valeria De Risi, DDS1
Drazen Tadic, Dr.rer.nat2
Gregory-George Zafiropoulos, DDS, Dr. Dent, Dr.Habil1*
Primary stability is an indicator of subsequent osseointegration of dental implants. However, few studies have
compared the implant stability among anatomical regions and bone types; thus, not enough data exist
regarding the stability of implants placed in regenerated bone (RB). The present study evaluated primary and
long-term stability of implants placed in RB and non-regenerated healed bone (HB). A total of 216 screw cylinder
implants were placed in 216 patients (98 in HB and 118 in RB, 6 [RB6, N ¼ 68] or 12 [RB12, N ¼ 50] months after
tooth extraction). Implant stability was evaluated using resonance frequency analysis (RFA) measured at the
time of implant placement (E1), at the time of loading (4 months after placement, E2), and 4 months after
loading (E3). Various clinically relevant measurements were obtained, such as implant diameter, length, and
location, as well as bone quality. At E1, implant location, bone quality, and experimental group significantly
affected implant stability (all at P , .05). At E2, implant location, diameter, length, and experimental group
significantly affected implant stability (all at P , .05). At E3, bone quality, implant diameter, length, and
experimental group significantly affected implant stability (all at P , .01). Stability for the RB12 group was
significantly higher than all other corresponding values; further, the values did not change significantly over
time. For the HB and RB6 groups, stability was significantly higher at E2 than at E1 (P , .001) and was no
different between E2 and E3. Implant location, length, and experimental group were associated with these
differences (all at P , .05). Compared with HB and RB6, higher implant stability may be achieved in regenerated
bone 12 months post-extraction (RB12). This stability was achieved at E1 and maintained for at least 8 months.
Variables such as implant length, diameter, and bone quality affected the stability differently over time. Implant
stability varied in different anatomic regions and with regard to different healing processes in the bone.
Key Words: dental implants, implant stability, resonance frequency analysis/RFA, regenerated bone, guided
bone regeneration, socket preservation, ridge preservation, extraction socket
INTRODUCTION
1
Division of Periodontology, Catholic University of Sacre Cuore,
A. Gemelli University Hospital, Rome, Italy.
2
Botiss Medical, Berlin, Germany.
* Corresponding author, e-mail: zafiropoulos@prof-zafiropoulos.
de
DOI: 10.1563/AAID-JOI-D-12-00014
438
Vol. XL /No. Four / 2014
D
ental implants are a safe, reliable, and
effective technique of replacing missing teeth.1-4 And, advances in the
field of tissue regeneration have lead
to new treatments in the field of
implantology.5-7 Implant success and long-term
survival are influenced by several factors: (1) the
Table of Contents for the Digital Edition of Journal of Oral Implantology August 2014
Helping, Rather Than Criticizing, a Colleague May Lead to a Lifetime of Referrals
Utilization of Ethyl Cyanoacrylate and 2-Octyl Cyanoacrylate Adhesives for Autogenous Bone Graft Fixation: Histomorphometric Study in Rats
Conventional Versus Implant-Retained Overlay Dentures: A Pilot Study of Masseter and Anterior Temporalis Electromyography
Axial Relationship Between Dental Implants and Teeth/Implants: A Radiographic Study
The Effect of Dynamic Loading on Bacterial Colonization of the Dental Implant Fixture–Abutment Interface: An In Vitro Study
Longitudinal Implant Stability Measurements Based on Resonance Frequency Analysis After Placement in Healed or Regenerated Bone
A Clinical Report on the Use of Closed-Tray, Hex-Lock-Friction-Fit Implant Impression Copings
Immediate Restoration of NobelActive Implants Placed Into Fresh Extraction Sites in the Anterior Maxilla
Clinical Study of Flap Design to Increase the Keratinized Gingiva Around Implants: 4-Year Follow-Up
Use of Subepithelial Connective Tissue Graft as a Biological Barrier: A Human Clinical and Histologic Case Report
Calvarial Autogenous Bone Graft for Maxillary Ridge and Sinus Reconstruction for Rehabilitation With Dental Implants
Staged Ridge Splitting Technique for Horizontal Expansion in Mandible: A Case Report
An Overview of Zirconia Dental Implants: Basic Properties and Clinical Application of Three Cases
Dental Gypsum Verification Jig to Verify Implant Positions: A Clinical Report
Platelet-Rich Preparations to Improve Healing. Part I: Workable Options for Every Size Practice
Platelet-Rich Preparations to Improve Healing. Part II: Platelet Activation and Enrichment, Leukocyte Inclusion, and Other Selection Criteria
Journal of Oral Implantology August 2014
http://www.brightcopy.net/allen/orim/Glossary
https://www.nxtbook.com/allen/orim/40-6
https://www.nxtbook.com/allen/orim/40-5
https://www.nxtbook.com/allen/orim/40-4
https://www.nxtbook.com/allen/orim/40-s1
https://www.nxtbook.com/allen/orim/40-3
https://www.nxtbook.com/allen/orim/40-2
https://www.nxtbook.com/allen/orim/40-1
https://www.nxtbook.com/allen/orim/39-6
https://www.nxtbook.com/allen/orim/39-5
https://www.nxtbook.com/allen/orim/39-4
https://www.nxtbook.com/allen/orim/39-3
https://www.nxtbook.com/allen/orim/39-s1
https://www.nxtbook.com/allen/orim/39-2
https://www.nxtbook.com/allen/orim/39-1
https://www.nxtbook.com/allen/orim/38-6
https://www.nxtbook.com/allen/orim/38-5
https://www.nxtbook.com/allen/orim/38-s1
https://www.nxtbook.com/allen/orim/38-4
https://www.nxtbook.com/allen/orim/38-3
https://www.nxtbook.com/allen/orim/38-2
https://www.nxtbook.com/allen/orim/38-1
https://www.nxtbookmedia.com