Korean J Otorhinolaryngol-Head Neck Surg.  2009 Jan;52(1):14-18. 10.3342/kjorl-hns.2009.52.1.14.

Obliteration of the Temporal Dorsal Bullae of Guinea Pigs Using Hydroxyapatite Granules (Bongros(R)): A Radiological and Histological Study

• Lee HS
• Cho YS
• Chung WH
• Lee SR
• Chung J
• Hong SH

• KMID: 1978422
• DOI: http://doi.org/10.3342/kjorl-hns.2009.52.1.14

Abstract

BACKGROUND AND OBJECTIVES
The present study reports radiological and histological observations of temporal dorsal bullae obliterated by implantation of hydroxyapatite granules (Bongros(R)). MATERIALS AND METHOD: The guinea pigs underwent obliteration of the left dorsal temporal bullae with hydroxyapatite granules (Bongros(R)). MicroCT images were obtained preoperatively and postoperatively. All animals were killed 3 months later. In 8 animals, light microscopic examination of bullae were conducted, and in 4 animals, morphological changes in the cochlear hair cells were examined by scanning electron microscopy (SEM).
RESULTS
The microCT images obtained at 3 months after operation demonstrated high signal intensity areas suggesting new bone formations at implanted sites. Light microscopic examinations showed new bone ingrowth and good osteointegration, but no inflammatory response or foreign-body reaction. SEM showed normal-looking hair cells on all examined animals' specimen.
CONCLUSION
Our results suggest that Bongros(R) may be safe and reliable alloplastic materials for mastoid obliteration. (Korean

Keyword

Cholesteatoma; Mastoid; Hydroxyapatite; Bone transplantations

MeSH Terms

Animals
Blister
Bone Transplantation
Cholesteatoma
Durapatite
Foreign-Body Reaction
Guinea
Guinea Pigs
Hair
Light
Mastoid
Microscopy, Electron, Scanning
X-Ray Microtomography
Durapatite