Site-Specific Variations in Bone Mineral Density under Systemic Conditions Inducing Osteoporosis in Minipigs

Area of Science:

• Oral and Maxillofacial Surgery
• Endocrinology
• Bone Metabolism

Background:

• Osteoporosis is a prevalent systemic bone disease in aging populations.
• The impact of osteoporosis on jaw bone density and dental implant osseointegration remains debated.
• Glucocorticoids are commonly used medications with known effects on systemic bone health.

Purpose of the Study:

• To investigate the effects of systemic glucocorticoid administration on jaw bone density in minipigs.
• To assess the potential risks of glucocorticoids on alveolar bone, relevant to osteoporosis.
• To evaluate a minipig model for studying osseointegration in compromised bone.

Main Methods:

• Thirty-seven female minipigs were randomized into prednisolone and placebo groups.
• Quantitative computed tomography (QCT) measured bone mineral density (BMD) in the spine and jaws.
• Serum bone metabolic markers were analyzed over a 9-month period.

Main Results:

• A significant decrease in jaw bone mineral density (BMD) was observed from baseline to 9 months.
• The reduction in BMD was more pronounced in the prednisolone-treated group compared to controls.
• Statistically significant differences (p < 0.001) were found for both mandible and maxilla BMD.

Conclusions:

• Systemic glucocorticoid administration demonstrably reduces jaw bone density in minipigs.
• This animal model is suitable for evaluating dental implant osseointegration in osteoporotic bone.
• Findings highlight potential risks for dental implant procedures in patients using glucocorticoids.