Morphological Evaluation of Bone by CT to Determine Primary Stability-Clinical Study

Area of Science:

• Oral and Maxillofacial Surgery
• Biomaterials Science
• Radiology

Background:

• Primary stability is crucial for successful dental implant therapy outcomes.
• Implant stability quotient (ISQ) is a key index for assessing primary implant stability.
• Preoperative computed tomography (CT) provides detailed bone morphological data.

Purpose of the Study:

• To investigate the relationship between ISQ values and bone morphological characteristics derived from preoperative CT.
• To determine if CT-based bone evaluations can predict primary implant stability.

Main Methods:

• Retrospective analysis of 247 implants in 98 patients.
• Correlations examined between ISQ values and parameters: cortical bone thickness, cortical bone CT value, cancellous bone CT value, insertion torque, implant diameter, and length.
• Multiple regression analysis employed to identify significant predictors of ISQ.

Main Results:

• Significant associations found between ISQ and cortical bone thickness and cancellous bone CT values across all cases.
• In the upper jaw, cortical bone thickness and cancellous bone CT values significantly correlated with ISQ.
• In the lower jaw, cortical bone thickness and implant diameter showed significant associations with ISQ.

Conclusions:

• Preoperative CT imaging, particularly cortical bone thickness and CT values, is valuable for evaluating potential implant stability.
• Combining ISQ measurements with CT-based bone analysis enhances preoperative assessment for dental implants.