Comparative Analysis of Osseodensification and Standard Implant Site Preparation Techniques in Low Density Bone

Abstract

Introduction. Dental implantation is getting more popular with patients who require total dental rehabilitation. Patients note that possibility of immediate loading based on dental implants is more favorable treatment option due to active social life. Low bone density, often occurred in the maxilla, frequently presents challenges for clinicians to achieve successful implant primary stability for predictable immediate loading.The aim of our study was to increase the efficiency of treatment of patients who require dental implantation in the maxilla.Materials and methods. Twenty-seven patients aged from 27 to 66 years with missing teeth in the alveolar process of maxilla were treated. All patients in this randomized clinical trial were divided into two groups. We used two methods for implant site preparation: the standard technique according to manufacturer’s recommendations in the first group (n = 13) and the Osseodensification technique via Densah drills (n = 14) in the second. All patients were treated by Astra Tech dental implants with the same dimensions (diameter 4 mm, length 9 mm). Immediately after implant placement the data of the frequency-resonance analysis of the implant stability and insertion torque were installed and obtained. Furthermore, a comparison of the operation time was carried out. Clinical evaluation and patient appreciation of pain, edema and hyperemia of the mucosa were evaluated using a questionnaire at 1, 3, 5 and 7 days after surgery. The measurement of the values of the stability quotient of the implants was repeated and carried out after six months.Results. Higher values of implant primary stability (insertion torque and implant stability quotient during surgery) were showed in the osseodensification group (IT — (45,0±5,8), ISQ — (71,8±2,9)) in comparison with standard technique (IT — (27,7±3,8), ISQ — (62,8±3,2)); p < 0,05.Discussion. Osseodensification technique promotes compaction of a low density bone in direct contact with the implant, which leads to higher implant primary stability due to the physical interaction between bone and implant.Conclusion. The obtained results allow us to consider that the osseodensification method is progressive for improving the effectiveness of implantological treatment on maxilla.