Purpose : To evaluate the correlation between bone density and implant stability using conventional and immediately extracted
Materials and methods : 56 Straumann bone level implants were evaluated in this study. The patients were devided into 2
groups: Group A received immediate implant placement after extraction. Group B received conventional implant placement at
edentulous area. Bone density of recipient site was evaluated using CBCT before implant placement. The insertion torque values
(ITV) were measured at implant placement, and the resonance frequency analysis measurements (ISQ) were performed with
Osstell instrument immediately after implant placement. In group A and group B, the correlation between bone density and
implant stability parameters (ITV, ISQ) were evaluated.
Results : In Group A, the bone density was not correlated with ITV and ISQ (p>.05). However, Group B showed significant
correlation between a) bone density and ITV and b) bone density and ISQ (p<.05).
Conclusion : Influence of bone density on implant stability was less effective at immediately extracted implant sockets compared
to conventionally placed implant sites.[THE JOURNAL OF THE KOREAN ACADEMY OF IMPLANT DENTISTRY 2011;30(1):62-70]