Osteoporosis International

, Volume 17, Issue 10, pp 1494–1500

Comparative study of axial and femoral bone mineral density and parameters of mandibular bone quality in patients receiving dental implants

  • M. A. L. Amorim
  • L. Takayama
  • V. Jorgetti
  • R. M. R. Pereira
Original Article

Abstract

Introduction

In view of the increase in the life expectancy of humans and in edentulism of the population above 50 years of age, in which the prevalence of osteoporosis is also higher, it is fundamental to better understand the effects of systemic bone mass loss on the healing process of dental implants and to determine the quality of the bone that surrounds them. The objective of the present study was to compare systemic osteoporosis (axial and femoral) and parameters of mandibular bone quality, and to evaluate osseointegration in postmenopausal women receiving dental implants.

Methods

The sample consisted of 39 women aged 48–70 years, 19 with a densitometric diagnosis of osteoporosis in the lumbar spine and femoral neck and 20 controls with a normal densitometric diagnosis. Bone mineral density was measured in the patients and controls by dual-energy X-ray absorptiometry. Eighty-two osseointegrated dental implants were placed in the mandible, 39 of them in the osteoporosis group and 43 in the control group. Mandibular bone quality was evaluated by classifying mandibular inferior cortical and trabecular bone on panoramic radiographs and by histomorphometric analysis of a mandibular bone biopsy. Osseointegration was analyzed after 9 months.

Results

No significant difference was observed between patients with osteoporosis and controls when comparing individuals with a normal cortex and those with a severely or moderately eroded cortex determined on panoramic radiographs. Histomorphometric analysis also revealed no difference in the parameters of bone formation or resorption between the two groups. Implant failure was observed in only one case.

Conclusion

We conclude that there is no association between systemic osteoporosis (axial and femur) and parameters of poor mandibular bone quality. The loss of one implant (1.2%) is compatible with the literature and cannot be attributed to systemic osteoporosis.

Keywords

Bone histomorphometry Bone mineral density Dental implant Osseointegration Osteoporosis 

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Copyright information

© International Osteoporosis Foundation and National Osteoporosis Foundation 2006

Authors and Affiliations

  • M. A. L. Amorim
    • 1
  • L. Takayama
    • 1
  • V. Jorgetti
    • 2
  • R. M. R. Pereira
    • 1
    • 3
  1. 1.Division of Rheumatology (Bone Mineral Metabolism Laboratory)University of São PauloSão PauloBrazil
  2. 2.Nephrology Division, School of MedicineUniversity of São PauloSão PauloBrazil
  3. 3.Faculdade de Medicina da Universidade de São PauloSão PauloBrazil

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