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Summary

The aim of the present investigation was to evaluate the stability of implants using resonance frequency analysis (RFA) relative to length, diameter and arch location, at the time of implant placement and during second-stage surgery. A total of 102 implants in 43 patients had been measured for stability at the time of implant placement (49 implants), and during second-stage surgery (53 implants). Radiographic examinations were performed pre-operatively and following implant placement for Group 1 patients and at second-stage surgery for Group 2 patients. The implant stability for both groups was assessed by RFA (Osstell, Integration Diagnostics AB, Göteborgsvägen, Sweden). For each measurement, the transducer was placed perpendicular to the long axis of the implant location and then secured with a torque of 10 Ncm as per manufacturer instructions. The results showed implants at first-stage surgery to have a mean stability of 66 ± 6.2 ISQ (range 52 to 79), and implants at the second stage to have a mean stability value of 65 ± 6.2 ISQ (range 51 to 79). Mandibular implants appear to reach higher stability values than maxillary implants at both first and second stage surgery (P ≤ 0.05). A direct relationship was observed between implant stability and implant diameter, however not between implant stability and implant length

Key words: implant-dental-stability-resonance frequency

Received: 02 06 2004

Accepted for publishing: 20 09 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: apse@ark.lv



	Baltic Dental and Maxillofacial Journal

September, 2004, Vol. 6, No. 3 CONTENTS SCIENTIFIC ARTICLES Dental Implant Stability at Stage I and II Surgery as Measured Using Resonance Frequency Analysis 67 - 72 The Ameloblastous Potentiality of Odontogenous Epithelium Demonstrated in Tissue Culture 73 - 76 Vertical Root Fractures in Endodontically Treated Teeth: A Clinical Survey 77 - 80 CLINICAL ARTICLES The Human Masticatory System From A Biomechanical Perspective: A Review 81 - 84 SCIENTIFIC ARTICLES Retentive and Stabilizing Properties of Stud and Magnetic Attachments Retaining Mandibular Overdenture. An in vitro Study 85 - 90 Accuracy of Traditional Clinical Examination in Combination with 3-D Computerized Axiography for Diagnosing Anterior Disk Displacement with Reduction 91 - 93 © 2004 Stomatologija		Stomatologija 2004; 6 (3): 67-72 354 KB Dental Implant Stability at Stage I and II Surgery as Measured Using Resonance Frequency Analysis Linish Vidyasagar, Girts Salms, Peteris Apse, Uldis Teibe Summary The aim of the present investigation was to evaluate the stability of implants using resonance frequency analysis (RFA) relative to length, diameter and arch location, at the time of implant placement and during second-stage surgery. A total of 102 implants in 43 patients had been measured for stability at the time of implant placement (49 implants), and during second-stage surgery (53 implants). Radiographic examinations were performed pre-operatively and following implant placement for Group 1 patients and at second-stage surgery for Group 2 patients. The implant stability for both groups was assessed by RFA (Osstell, Integration Diagnostics AB, Göteborgsvägen, Sweden). For each measurement, the transducer was placed perpendicular to the long axis of the implant location and then secured with a torque of 10 Ncm as per manufacturer instructions. The results showed implants at first-stage surgery to have a mean stability of 66 ± 6.2 ISQ (range 52 to 79), and implants at the second stage to have a mean stability value of 65 ± 6.2 ISQ (range 51 to 79). Mandibular implants appear to reach higher stability values than maxillary implants at both first and second stage surgery (P ≤ 0.05). A direct relationship was observed between implant stability and implant diameter, however not between implant stability and implant length Key words: implant-dental-stability-resonance frequency Received: 02 06 2004 Accepted for publishing: 20 09 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: apse@ark.lv