The effect of local simvastatin delivery strategies on mandibular bone formation in vivo

Yeonju Lee, Marian J. Schmid, David B. Marx, Mark W Beatty, Diane M. Cullen, Melissa E. Collins, Richard A Reinhardt

Research output: Contribution to journalArticle

75 Citations (Scopus)

Abstract

Systemic simvastatin is known to reduce cholesterol and stimulate modest bone formation, but local surgical placement in polylactic acid domes causes robust bone formation and local swelling. A less invasive and more flexible injection protocol was studied to evaluate the bone-inducing effects compared to surgical implantation. Bone formation rate, short- and long-term bone augmentation histology, and mechanical properties were evaluated to characterize the new bone in a rat bilateral mandible model (test and control sides in same animal). Results demonstrated that multiple (3) injections of 0.5 mg simvastatin effectively reduced soft tissue swelling while preserving bone growth (60% increase of bone width at 24 days) compared to simvastatin dome placement (43% increase at 24 days). Compared to controls, bone formation rate was significantly higher on the simvastatin side, especially in the dome. Three-point bending tests revealed higher maximum force to fracture and stiffness at 24 days with simvastatin injections. Long-term evaluation showed that 55% of maximum new bone formed 24 days post-injection was retained at 90 days.

Original languageEnglish (US)
Pages (from-to)1940-1949
Number of pages10
JournalBiomaterials
Volume29
Issue number12
DOIs
StatePublished - Apr 1 2008

Fingerprint

Simvastatin
Osteogenesis
Bone
Bone and Bones
Injections
Domes
Bone Development
Mandible
Swelling
Histology
Cholesterol
Bending tests
Rats
Animals
Stiffness
Tissue
Mechanical properties

Keywords

  • Bone formation
  • In vivo
  • Local delivery
  • Long-term
  • Mechanical tests
  • Simvastatin

ASJC Scopus subject areas

  • Bioengineering
  • Ceramics and Composites
  • Biophysics
  • Biomaterials
  • Mechanics of Materials

Cite this

The effect of local simvastatin delivery strategies on mandibular bone formation in vivo. / Lee, Yeonju; Schmid, Marian J.; Marx, David B.; Beatty, Mark W; Cullen, Diane M.; Collins, Melissa E.; Reinhardt, Richard A.

In: Biomaterials, Vol. 29, No. 12, 01.04.2008, p. 1940-1949.

Research output: Contribution to journalArticle

Lee, Yeonju ; Schmid, Marian J. ; Marx, David B. ; Beatty, Mark W ; Cullen, Diane M. ; Collins, Melissa E. ; Reinhardt, Richard A. / The effect of local simvastatin delivery strategies on mandibular bone formation in vivo. In: Biomaterials. 2008 ; Vol. 29, No. 12. pp. 1940-1949.
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