Three-dimensional tomographic mapping related to primary stability and structural miniscrew characteristics

Area of Science:

• Dental anatomy and imaging
• Orthodontic implantology

Background:

• Accurate bone thickness measurements are crucial for dental implant procedures.
• Computerized tomographic (CT) scans provide detailed anatomical data for evaluation.

Purpose of the Study:

• To measure bone thickness of the maxilla, mandible, and their cortical plates using CT scans.
• To assess the suitability of different jaw regions for miniscrew insertion.

Main Methods:

• CT scans of 25 subjects (18-58 years) were analyzed.
• Interradicular and bucco-lingual bone thickness was measured at three levels from the alveolar ridge.
• Cortical plate thickness was specifically evaluated.

Main Results:

• Cortical bone thickness varied significantly, ranging from 0.25 to 5.50 mm.
• Mandibular buccal and lingual cortical plates were thicker in posterior areas.
• Only 13% of maxillary sites and 63% of mandibular sites were suitable for miniscrew insertion (≥3.3 mm).

Conclusions:

• Considerable individual variation in bone thickness exists.
• The palatal/lingual side of the jaw may offer superior primary stability for miniscrews.
• The palatal area between the second premolar and first molar is recommended for specific miniscrew types.