Muhamad Abu-Hussein1*, Chlorokostas Georges2, Nezar Watted3 and Abdulgani Azzaldeen4
1University of Naples Federic II, Naples, Italy, Department of Pediatric Dentistry, University of Athens, Greece
2Implantologist, Private Dental Practice, Athens, Greece
3University Hospital of Würzburg Clinics and Policlinics for Dental, Oral and Maxillofacial Diseases of the Bavarian Julius-Maximilian-University Wuerzburg, Germany and Center for Dentistry research and Aesthetics, Jatt, Israel
4Department of Conservative Dentistry, Al-Quds University, Jerusalem, Palestine
Received: 25 October, 2016; Accepted: 31 October, 2016; Published: 01 November, 2016
Abu-Hussein Muhamad, DDS, MSc D, MSc, M Dent Sci (Paed Dent), FICD, 123 Argus Street, 10441 Athens, Greece, E-mail:
Abu-Hussein M, Georges C, Watted N, Azzaldeen A (2016) A Clinical Study Resonance Frequency Analysis of Stability during the Healing Period. Int J Oral Craniofac Sci 2(1): 065-071. 10.17352/2455-4634.000021
© 2016 Abu-Hussein M, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
Implant stability; ISQ value; Resonance frequency analysis; AL-Technology implant
Implant stability plays a critical role for successful osseointegration, which has been viewed as a direct structural and functional connection existing between bone and the surface of a load-carrying implant. Achievement and maintenance of implant stability are prerequisites for successful clinical Outcome. Therefore, measuring the implant stability is an important method for evaluating the success of an implant.
The aim of this clinical study was to measure the implant stability quotient using a method called resonance frequency analysis of dental implants during the healing period.
Material and methods: A number of 43 patients received 152 Shark AL-Technology implant system either in the maxillary or in the mandibular arch. Implant stability was measured with an Osstell Mentor device (Osstel, AB, Sweden) using the resonance frequency analysis at the time of implant placement, 0, 2, 4, 8 and 12 weeks post insertion.
Results: The mean implant stability quotient for all implants placed was 72,18. The lowest value of the implant stability quotient was at 2 weeks post insertion measuring 60,78.
Conclusions: In relation to the gender the implants placed in female patients showed a higher mean value of the implant stability quotient. In relation to the location within the dental arch the implants placed in the anterior areas had a higher implant stability quotient than the ones places in the posterior areas of the arch
Osseointegration has been used to define a direct structural and functional connection between ordered living bone and the surface of a load carrying implant .
The stability of a dental implant can be defined as the absence of clinical mobility, and this is also the suggested definition of osseointegration. The most important prerequisite for success of ossointegrated dental implants is achievement and maintenance of implant stability. Primary stability is a merely a mechanical phenomenon depending on local bone quality and quantity, surgical preparation technique, and implant design and one of the most important factors in the osseointegration process [2,3].
Initial stabilization is not the same as osseointegration; it must carry the implant during the critical time of the early stages in the development of osseointegration, during which the implant is at risk. The clinical measurement of implant stability and osseointegration is important to be able to assess success in implant dentistry. It is now possible to measure implant stability at any time during the course of implant treatment and loading [2-4].
The primary stability of dental implants depends on the contact of bone with the implant during surgical placement of the implant; this mechanical contact can be obtained with fixation of a press-fit structure into a bony cavity. Primary stability is a major requisite both for direct bone deposit onto the surface of the implant and for subsequent mineral tissue integration [5,6].
If an implant is not stable at the time of installation, micro-motion may occur during the healing period, thereby resulting in a thin fibrous layer at the bone-implant interface, an impediment to full osseointegration and a potential harbinger of future implant failure  (Figure 1).