British Journal of Oral and Maxillofacial Surgery
Volume 43, Issue 6 , Pages 493-499, December 2005

Histomorphometric study of the stability of newly formed bone after elevation of the floor of the maxillary sinus

  • Hui Xu

      Affiliations

    • Division of Oral Pathology, Tohoku University Graduate School of Dentistry, 4-1 Seiryo-machi, Sendai 980-8575, Japan
    • Department of Orthodontics, School of Stomatology, Jilin University, Changchun, China
    • Corresponding Author InformationCorresponding author. Tel.: +81 22 717 8303; fax: +81 22 717 8304.
    • ,
  • Yoshinaka Shimizu

      Affiliations

    • Division of Oral and Craniofacial Anatomy, Tohoku University Graduate School of Dentistry, Sendai, Japan
    • ,
  • Kiyoshi Ooya

      Affiliations

    • Division of Oral Pathology, Tohoku University Graduate School of Dentistry, 4-1 Seiryo-machi, Sendai 980-8575, Japan

Received 3 June 2004; accepted 4 February 2005.

Abstract 

We studied the remodelling process of newly formed bone and the distribution of osteoclasts in the augmented space after elevation of the floor of the maxillary sinus in rabbits. Histologically, 10 weeks after grafting, there was some newly formed lamellar bone embedded in fatty tissue. Histomorphometric analysis showed that the augmented height and augmented area decreased significantly from 2 to 6 weeks. The number of osteoclasts on newly formed bone, adjacent to the elevated sinus membrane, was significantly greater than in the augmented space at 2 and 4 weeks. We conclude that newly formed bone in the augmented space after grafting with blood clot is unstable during the early stage of bony regeneration.

Keywords: Osteoclast, Rabbit, Sinus lift, Stability

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PII: S0266-4356(05)00053-7

doi:10.1016/j.bjoms.2005.02.001

British Journal of Oral and Maxillofacial Surgery
Volume 43, Issue 6 , Pages 493-499, December 2005

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