|Baltic Dental and Maxillofacial Journal|
June, 2004, Vol. 6, No. 2
© 2004 Stomatologija
Stomatologija 2004; 6 (2): 35-9 253 KB
Investigation of Initial Implant Stability with Different Dental Implant Designs. A Pilot Study in Pig Ribs Using Resonance Frequency Analysis
Linish Vidyasagar, Girts Salms, Peteris Apse, Uldis Teibe
Primary implant stability appears to be a prerequisite for successful bone integration of dental implants. A quantitative method of assessing osseointegration becomes essential for serving as a baseline and to be able to follow the measurement with time. A recently developed apparatus (Osstell; Integration Diagnostics AB, Sweden) uses resonance frequency (i.e. tuning fork principle) to determine implant stability. The use of resonance frequency analysis may provide an objective approach to measuring initial implant stability by being able to detect changes in micromotion that could be associated with increase or decrease in degree of osseointegration. Primary implant stability has been reported to be influenced by the bone quality and quantity, the implant geometry, and the site preparation technique. The purpose of the study is to test implant stability in relation to implant design (thread geometry and crest module) using Resonance Frequency Analysis (RFA). The stabilities of 5 implant designs were tested after insertion into pig ribs. It was observed that the pig rib demonstrated type1/ 2 bone density. Following implant placement, the corresponding transducer for each implant design was attached perpendicular to the long axis of the pig rib and implant stabilities assessed using resonance frequency analysis. Different implant designs achieved a similar primary stability in the pig ribs. It may be concluded that design features aimed at improving primary stability are less important in dense bone.
Key words: dental implant, stability, pig rib, resonance frequency.
Received: 02 02 2004
Accepted for publishing: 20 03 2004
Linish Vidyasagar - B.D.S., MSc (Helsinki), Dip. Prosth., Department of Prosthodontics, Faculty of Dentistry, Riga Stradina University, Riga, Latvia.
Girts Salms - M.D., D.D.S., Lecturer at Department of Oral and Maxillofacial Surgery, Faculty of Dentistry, Riga Stradina University, Riga, Latvia.
Peteris Apse - D.D.S., MSc (Toronto), Dr. habil med. (Latvia), professor, Department of Prosthodontics, Faculty of Dentistry, Riga Stradina University,Riga, Latvia.
Uldis Teibe - Dr.Biol., Assoc.Prof., Department of Prosthodontics, Faculty of Dentistry, Riga Stradina University, Riga, Latvia.
Address correspondence to Prof. Peteris Apse, Dzirciema 20, Riga, Latvia, LV 1007. E-mail: firstname.lastname@example.org