ABSTRACT
Objective To study the effect of estrogen,recombine human growth hormone and their combinations on residual ridge reduction in osteoporotic rats.Methods Animal models were established by ovariectomy and exodontia on left partial maxillary,then were devided into osteoporosis group and treatment groups;treatment groups were given estrogen and recombine human growth hormone medicial alone and their recombinations.After treatment for 4 and 8 weeks with drugs,the effects of estrogen and recombine human growth hormone on the serum tartrate-resistant acid phosphatase level and bone histomorphometry changes in maxillary were observed in each group. Results ① The serum tartrate-resistant acid phosphatase level was obvionsly lower in ERT group and Er-HGH group than in OP group(P