A Numeric Analysis of Bone Density in the Edentulous Interforaminal Region

Area of Science:

• Dental Implantology
• Oral and Maxillofacial Radiology
• Biomaterials Science

Background:

• All-on-Five treatment protocols require adequate bone density for successful osseointegration and immediate loading.
• Assessing interforaminal bone density is critical for planning fixed implant-supported prostheses.

Purpose of the Study:

• To evaluate interforaminal bone density using quantitative computed tomography (QCT) in patients considered for All-on-Five fixed implant treatment.
• To determine if measured bone densities align with immediate loading protocols for fixed partial dentures.

Main Methods:

• Quantitative computed tomography (QCT) scans of 30 edentulous patients were analyzed using specialized software.
• Bone densities (Hounsfield units) were recorded at multiple sites within proposed All-on-Five implant locations.

Main Results:

• Highest bone densities were observed at the implant neck, with significantly lower densities at the apex.
• Bone density decreased on the lingual aspect, particularly in the interforaminal region and for intermediate implant positions.
• Women exhibited lower bone densities compared to men (P < .01).

Conclusions:

• Interforaminal bone density, especially in the paramedian symphysis and in women, is lower but suitable for immediate loading with fixed partial dentures.
• QCT provides valuable quantitative data for treatment planning in All-on-Five implantology.