Preoperative evaluation of bone quality and bone density using a novel CT/microCT-based hard-normal-soft...

Area of Science:

• Biomaterials Science
• Radiology
• Dental Implantology

Background:

• Accurate presurgical assessment of bone density is crucial for stable dental implant placement.
• Current methods may lack objectivity and site-specific quantitative data.

Purpose of the Study:

• To develop a novel, objective method for measuring and classifying bone density.
• To establish a system for presurgical bone quality assessment.

Main Methods:

• Bone density of bovine bone blocks was measured using computed tomography (CT) in Hounsfield units (HU).
• Bone quality was further assessed via histomorphometric microCT and subjective drilling evaluation.
• A correlation between CT and microCT measurements was established.

Main Results:

• A statistically significant correlation was found between CT and microCT bone density measurements.
• A new three-class system (Hard/Dense, Normal, Soft - HNS) for bone density classification was developed.
• A formula was created to convert HU values to bone volume percentages (BV%) for objective HNS classification.

Conclusions:

• The proposed Hounsfield unit (HU) classification system provides objective, quantitative, and site-specific bone density measurements.
• This innovative method and mathematical formula support improved presurgical planning for dental implantology.
• The HNS classification system offers a reliable approach to assessing bone quality for clinical applications.