Title: 1502 - Fractal Dimension Analysis of Ultrasound Treated Bone Around Dental Implant


Elaf Abdulhameed (Presenter)
University of Sharjah

Natheer Al-Rawi, University of Sharjah
Asmaa Uthman, Gulf Medical University
AR Samsudin, University of Sharjah


Objectives: To evaluate the accuracy of fractal dimension analysis (FDA) in predicting implant stability during insertion and following loading using two protocols from periapical radiographs.

Methods: A double blind clinical trial of 22 subjects needing dental implant was conducted. The study participants were randomized into two groups, both groups underwent similar two-stage implant surgery of one maxillary dental implant. The control group (n=11) the implant site was allowed to heal in the conventional way, and the intervention group (n=11) subjected to intraoral low intensity pulsed ultrasound (LIPUS) therapy at the implant site (twice a week ; 20 minutes duration ; from week 2 after stage I implant surgery and continued for 10 weeks). Similar Ultrasound protocol was repeated 2 weeks after crown installation and again continued for another 10 weeks. The RFA and the FDA values of bone density were carried out on mesial and distal side of the implant immediately after surgery and after three and six months.

Results: FDA- on mesial and distal sides serve as very good to excellent tests with high validity for predicting high implant stability (RFA ≥70). The mesial side measurements were consistently better than the distal side in this context. The optimum cut-off value for FAD-mesial side that predicts a highly stable implant (RFA ≥70) is ≥1.505. At this optimum cut-off value, the mesial side FAD is associated with a perfect sensitivity (100%) and fairly high specificity (86.5%). It was found that for each one unit increase in FAD-mesial side the RFA value is expected to increase by 47.7 units.

Conclusions: Ultrasound therapy enhances bone formation around dental implant and FDA analysis is recommended as an adjunctive quantitative method in prediction of the implant stability.


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Disclosure Statement:
The submitter must disclose the names of the organizations with which any author have a relationship, the nature of the relationship, and the clinical or research area involved. The following is submitted: NONE