The Effect Of Ultrasound Therapy On Osseointegration And Marginal Bone Loss Around Implant-Supported Prosthesis

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Date
2017-05
Authors
Abdulhameed, Elaf Akram
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Publisher
Universiti Sains Malaysia
Abstract
Marginal bone loss is considered to be an inevitable risk factor in implant therapy. The reduction in the height and width of marginal bone level may affect the success rate of implant treatment in terms of aesthetic and function. In addition, primary implant stability during the surgical phase is an important predictor for dental implant success. However, clinicians encounter many occasions where less than the recommended optimum primary stability was achieved during this phase and the further prognosis of the implant become questionable; Low-intensity pulsed ultrasound (LIPUS) has been proposed as a method for promoting and accelerating healing time and accordingly reducing the marginal bone loss. Therefore, this study was carried out to determine the effect of therapeutic ultrasound on marginal bone loss using CBCT and osseointegration of dental implant using Resonance Frequency Analysis (RFA) techniques. The study sample comprised of 22 patients; which were divided into two groups randomly: ultrasound and non-ultrasound (control) groups, both consisted of 11 patients. The ultrasound therapy was delivered intra-orally on the buccal part of the implant site for a duration of 20 minutes twice a week started 2 weeks following dental implant placement for the subsequent 10 weeks. The same ultrasound therapy protocol was repeated 2 weeks after the delivery of the prosthesis for another 10 weeks. The bone height and width were measured and compared at three different views (coronal, sagittal and axial) using CBCT at day 0, 3 months and 6 months. For statistical analysis, repeated measure ANOVA with significance level of p<0.05 was used for the evaluation and comparison within the same group and between the two different groups based on time. Results showed that there was an increase in marginal bone level in the ultrasound group from day 0 to 6 months and marginal bone lone loss in the control group within the same time interval. The marginal bone increase was more statistically significant at the buccal bone plate of p<0.05. In both groups, ultrasound and control, there was an increase in RFA values but the increase was more pronounced in the ultrasound group compared to control group from day 0 to 6 months. Overall, LIPUS presented valuable addition to the bone healing around dental implant and can be utilized as a treatment modality to save implant with questionable stability and to enhance bone regeneration around dental implants.
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Keywords
Effect of therapeutic ultrasound , on marginal bone loss.
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