“Evaluation Of Bone Quality By CBCT And Its Correlation With Implant Stability Quotient.

Abstract

Introduction- The long term clinical success of the dental implant depends on both the bone quality and quantity of available for implant placement. Bone quality influences the primary and secondary stabilization of the implant placement. To evaluate and correlate Implant Stability values using Resonance frequency analysis (RFA) and crestal bone levels (CBL) post implant loading to the cortico-cancellous bone quality derived by CBCT.

Methods- A total number of 17 implants were placed in the mandibular posterior region in 17 patients (9 females and 8 males). Pre-operative cortico cancellous bone quality at varying depths was evaluated by CBCT. Insertion torque value (ITV) and Implant stability quotient (ISQ) was observed at the time of implant placement. Implant stability quotient value was observed at the time of loading, 3 months post implant loading and 6 months post implant loading. Crestal bone levels were observed at the time of loading, 3 months and 6 months post implant loading.

Result- Insertion torque value (ITV), Implant stability quotient (ISQ) and Crestal bone levels (CBL) at the time of loading, 3 months post implant loading were highly correlated with the crestal and buccolingual cortico cancellous bone thickness, and the ratio of cortico cancellous bone quality at 3 mm.

Conclusion- The bone quality and quantity and the cortical bone thickness at crest can affect implant stability, and should be considered by the clinician before the implant therapy. A good amount of cortical bone thickness results in higher torque values, implant stability and less crestal bone loss.