International Journal of Experimental Dental Science

Register      Login

VOLUME 4 , ISSUE 2 ( July-December, 2015 ) > List of Articles


What is the Effect of Implant-tooth Distance on Resonance Frequency Analysis Measurements?

Mohammed Jasim Aljuboori, Luiz Carlos Magno Filho, Farah Saadi Al-Obaidi, Hussein Ali Al-Wakeel, Maan Ibrahim Al-Marzok

Citation Information : Aljuboori MJ, Filho LC, Al-Obaidi FS, Al-Wakeel HA, Al-Marzok MI. What is the Effect of Implant-tooth Distance on Resonance Frequency Analysis Measurements?. Int J Experiment Dent Sci 2015; 4 (2):124-129.

DOI: 10.5005/jp-journals-10029-1110

Published Online: 00-12-2015

Copyright Statement:  Copyright © 2015; Jaypee Brothers Medical Publishers (P) Ltd.



The volume and density of the bone surrounding an implant directly affect the implant stability during the healing period.

The aim of this study was to determine the correlations between resonance frequency analysis (RFA) readings and implant-tooth distances at the crestal and average apicalcrestal levels.

Materials and methods

Nine patients received 22 implants. Periapical radiographs were taken at 6 weeks, and the implant-tooth mesial and distal crestal level distances were measured, along with the mesial and distal apical levels. The average mesial (AM) and average distal (AD) apical-crestal distances were calculated. In cases in which either the AM or the AD of the implant was below 4 mm, the specimens were placed in the AMD– group; when both the AM and the AD were greater than 4 mm, the specimens were placed in the AMD+ group. The lower values were used for both groups. Resonance frequency analysis measurements were taken in the mesiodistal direction at 6 weeks. The correlations between the mean RFAs and the means of the distances were examined using Spearman's or Pearson's correlation tests, depending on the distributions of the data.


The mean and SD of the AD group was 3.99 ± 3.19. The mean and SD of the AM group was 3.80 ± 2.67. The mean and SD of the AD– group was 2.72 ± 0.89. The mean and SD of the AD+ group was 6.34 ± 2.94. The mean and SD of the RFAs at 6 weeks was 77.82 ± 5.24, and for the AMD– and AMD+ groups, these measures were 78 ± 5.55 and 77.64 ± 5.36, respectively. None of the correlations between the RFAs and any of the distances were significant: AD (r = 0.114; Pearson's test, p < 0.05), AM (r = – 0.217; Spearman's test p < 0.05), AMD– (r = 0.248; Pearson's test, p < 0.05), and AMD+ (r = 0.3; Spearman's test, p < 0.05).


Within the limitations of this study, no correlations between the RFA readings and the implant-tooth distances were found at any level or distance.

How to cite this article

Aljuboori MJ, Filho LCM, Al-Obaidi FS, Al-Wakeel HA, Al-Marzok MI. What is the Effect of Implant-tooth Distance on Resonance Frequency Analysis Measurements? Int J Experiment Dent Sci 2015;4(2):124-129.

PDF Share
  1. Assessing the implant/bone interface by using natural frequency analysis. Oral Surg Oral Med Oral Pathol Oral Radiol Endod 2000;90(3):285-291.
  2. Comparative histomorphometry and resonance frequency analysis of implants with moderately rough surfaces in a loaded animal model. Clin Oral Implants Res 2008;19(1):1-8.
  3. Evaluation of two different resonance frequency devices to detect implant stability: a clinical trial. J Periodontol 2007;78(2):262-272.
  4. Influence of transducer orientation on Osstell stability measurements of osseointegrated implants. Clin Implant Dent Relat Res 2007;9(1):60-64.
  5. Clinical study on the primary stability of two dental implant systems with resonance frequency analysis. Clin Oral Investig 2007;11(3):257-265.
  6. Resonance frequency analysis in relation to jawbone characteristics and during early healing of implant installation. Clin Oral Implants Res 2007;18(3):275-280.
  7. Resonance frequency analysis of implants in the guinea pig model: influence of boundary conditions and orientation of the transducer. Med Eng Phys 2007;29(2):182-190.
  8. Implant stability measurement of delayed and immediately loaded implants during healing. Clin Oral Implants Res 2004;15(5):529-539.
  9. Resonance frequency analysis of one-stage dental implant stability during the osseointegration period. J Periodontol 2005;76(7):1066-1071.
  10. Influence of cortical bone thickness and implant length on implant stability at the time of surgery—clinical, prospective, biomechanical, and imaging study. Bone 2005;37(6):776-780.
  11. Factors influencing the resonance frequency of dental implants. J Oral Maxillofac Surg 2003;61(10):1184-1188.
  12. A comparative study of removal torque of endosseous implants in the fibula, iliac crest and scapula of cadavers: preliminary report. Clin Oral Implants Res 1997;8(4):286-289.
  13. Resonance frequency analysis of implants subjected to immediate or early functional occlusal loading: successful vs failing implants. Clin Oral Implants Res 2004;15(4):428-434.
  14. Resonance frequency measurements of implant stability in vivo: a cross-sectional and longitudinal study of resonance frequency measurements on implants in the edentulous and partially dentate maxilla. Clin Oral Implants Res 1997;8(3): 226-233.
  15. Elasticity of alveolar bone near dental implant-bone interfaces after one month's healing. J Biomech 2003;36(80):1209-1214.
  16. Relevance of resonance frequency analysis to evaluate dental implant stability: simulation and histomorphometrical animal experiments. Clin Oral Implants Res 2008;19(1):9-14.
  17. Comparative study of axial and femoral bone mineral density and parameters of mandibular bone quality in patients receiving dental implants. Osteoporos Int 2007;18(5):703-709.
  18. A biomechanical assessment of the relation between the oral implant stability at insertion and subjective bone quality assessment. J Clin Periodontol 2007;34(4):359-366.
PDF Share

© Jaypee Brothers Medical Publishers (P) LTD.