Clinical study of the relationship between implant stability measurements using Periotest and Osstell mentor and bone quality assessment

Objectives. The purpose of this study was to evaluate the relationship between subjective bone quality assessments and objective implant stability values using Periotest and Osstell Mentor, which are widely used clinically, to assess the correlation between these 2 measurements. Study Design. A total of 211 dental implants (114 in the maxilla and 97 in the mandible) were placed in 162 patients (89 males and 73 females). Bone quality type was classified according to the Lekholm and Zarb classification. After implant placement, implant stability was measured using Periotest and Osstell Mentor. Implant stability was represented by the implant stability quotient (ISQ) values and periotest values (PTVs). All of the procedures were performed by 1 operator to reduce potential errors. Results. The ISQ values were higher in the mandible (72.77 +/- 8.77) than in the maxilla (65.72 +/- 8.65), whereas PTVs were lower in the mandible (-3.02 +/- 2.63) than in the maxilla (-0.17 +/- 2.82). A statistically significant correlation was found between bone quality type and both ISQ values and PTVs. A significant negative correlation was found between the ISQ values and PTVs (P < .01). Conclusion. Both measurements seem to be useful in predicting implant placement prognosis and in determining loading protocols. (Oral Surg Oral Med Oral Pathol Oral Radiol 2012;113:e35-e40)