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Using Inducible Osteoblastic Lineage-Specific Stat3 Knockout Mice to Study Alveolar Bone Remodeling During Orthodontic Tooth Movement

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Alveolar bone and the bisphosphonates.

A Cheng¹, C G Daly, R M Logan

¹Oral and Maxillofacial Surgery Unit, The University of Adelaide, South Australia, Australia.

Australian Dental Journal

|September 10, 2009

Summary

This summary is machine-generated.

Bisphosphonate-associated osteonecrosis of the jaws (ONJ) typically starts in the alveolus. This study explores why jawbone is more susceptible than long bones to bisphosphonate effects and discusses ONJ causation and clinical relevance for dentists.

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Area of Science:

Oral and Maxillofacial Surgery
Bone Biology
Pharmacology

Background:

Bisphosphonates are widely used to treat bone diseases.
Osteonecrosis of the jaws (ONJ) is a known complication associated with bisphosphonate therapy.
The specific mechanisms underlying ONJ development, particularly in the alveolar bone, require further elucidation.

Observation:

Osteonecrosis of the jaws (ONJ) characteristically initiates at the alveolar bone.
Differences in the microarchitecture and vascularization exist between alveolar bone and long bones.
Bisphosphonates exhibit varying affinities and retention characteristics at different skeletal sites.

Findings:

Alveolar bone's unique structure and function contribute to a higher susceptibility to bisphosphonate-induced osteonecrosis compared to long bones.
Current understanding of ONJ pathogenesis involves factors such as altered bone remodeling, impaired angiogenesis, and local infection.
The differential susceptibility is linked to the pharmacokinetics and pharmacodynamics of bisphosphonates within distinct bone microenvironments.

Implications:

Dentists must be aware of the heightened risk of ONJ in patients using bisphosphonates, especially when managing periodontal disease.
Understanding the site-specific effects of bisphosphonates is crucial for risk assessment and preventive strategies in dental practice.
This knowledge aids in developing tailored management protocols for periodontal conditions in patients undergoing bisphosphonate therapy to minimize ONJ risk.