Effects of continual intermittent administration of parathyroid hormone on implant stability in the presence of osteoporosis: an in vivo study using resonance frequency analysis in a rabbit model
Abstract Objective: This study aimed to evaluate the effects of continual intermittent administration of parathyroid hormone (PTH) on implant stability in the presence of osteoporosis, using rabbit models. Material and Methods: Fifteen female New Zealand white rabbits underwent ovariectomy and wer...
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| Format: | Article |
| Language: | English |
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University of São Paulo
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| Series: | Journal of Applied Oral Science |
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| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1678-77572017000500498&lng=en&tlng=en |
| _version_ | 1819048270297563136 |
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| author | Yoshifumi Oki Kazuya Doi Yusuke Makihara Reiko Kobatake Takayasu Kubo Kazuhiro Tsuga |
| author_facet | Yoshifumi Oki Kazuya Doi Yusuke Makihara Reiko Kobatake Takayasu Kubo Kazuhiro Tsuga |
| author_sort | Yoshifumi Oki |
| collection | DOAJ |
| description | Abstract Objective: This study aimed to evaluate the effects of continual intermittent administration of parathyroid hormone (PTH) on implant stability in the presence of osteoporosis, using rabbit models. Material and Methods: Fifteen female New Zealand white rabbits underwent ovariectomy and were administered glucocorticoids to induce osteoporosis, following which they were divided into three groups. The first group received intermittent subcutaneous PTH for 4 weeks until implant placement (PTH1), while the second and third groups received PTH (PTH2) and saline (control), respectively, for 4 weeks before and after implant placement. After intermittent administration of PTH or saline, titanium implants were inserted into the left femoral epiphyses of all animals, and the implant stability quotient (ISQ) was measured immediately after placement to assess the primary stability and at 2 and 4 weeks after implant placement to assess osseointegration. At 4 weeks after implant placement, histological and histomorphometric evaluations were conducted and the bone area around the implant socket was measured as a ratio of the total bone area to the total tissue area. Results: Regarding primary stability, the ISQ values for the PTH1 and PTH2 groups were significantly higher than those for the control group (p<0.05). Concerning osseointegration, the ISQ values at 2 and 4 weeks were significantly higher for the PTH2 group than for the PTH1 and control (p<0.05) groups. Histological assessments showed a thicker and more trabecular bone around the implant sockets in the PTH2 specimens than in the PTH1 and control specimens. The bone area around the implant socket was significantly greater in the PTH2 group than in the PTH1 and control groups (p<0.05). Conclusions: Our results suggest that continual intermittent PTH administration before and after dental implant placement is effective for the achievement of favorable stability and osseointegration in the presence of osteoporosis. |
| first_indexed | 2024-12-21T11:13:35Z |
| format | Article |
| id | doaj.art-229bf20cac6448ddb3effa59c9673382 |
| institution | Directory Open Access Journal |
| issn | 1678-7765 |
| language | English |
| last_indexed | 2024-12-21T11:13:35Z |
| publisher | University of São Paulo |
| record_format | Article |
| series | Journal of Applied Oral Science |
| spelling | doaj.art-229bf20cac6448ddb3effa59c96733822022-12-21T19:05:59ZengUniversity of São PauloJournal of Applied Oral Science1678-776525549850510.1590/1678-7757-2016-0561S1678-77572017000500498Effects of continual intermittent administration of parathyroid hormone on implant stability in the presence of osteoporosis: an in vivo study using resonance frequency analysis in a rabbit modelYoshifumi OkiKazuya DoiYusuke MakiharaReiko KobatakeTakayasu KuboKazuhiro TsugaAbstract Objective: This study aimed to evaluate the effects of continual intermittent administration of parathyroid hormone (PTH) on implant stability in the presence of osteoporosis, using rabbit models. Material and Methods: Fifteen female New Zealand white rabbits underwent ovariectomy and were administered glucocorticoids to induce osteoporosis, following which they were divided into three groups. The first group received intermittent subcutaneous PTH for 4 weeks until implant placement (PTH1), while the second and third groups received PTH (PTH2) and saline (control), respectively, for 4 weeks before and after implant placement. After intermittent administration of PTH or saline, titanium implants were inserted into the left femoral epiphyses of all animals, and the implant stability quotient (ISQ) was measured immediately after placement to assess the primary stability and at 2 and 4 weeks after implant placement to assess osseointegration. At 4 weeks after implant placement, histological and histomorphometric evaluations were conducted and the bone area around the implant socket was measured as a ratio of the total bone area to the total tissue area. Results: Regarding primary stability, the ISQ values for the PTH1 and PTH2 groups were significantly higher than those for the control group (p<0.05). Concerning osseointegration, the ISQ values at 2 and 4 weeks were significantly higher for the PTH2 group than for the PTH1 and control (p<0.05) groups. Histological assessments showed a thicker and more trabecular bone around the implant sockets in the PTH2 specimens than in the PTH1 and control specimens. The bone area around the implant socket was significantly greater in the PTH2 group than in the PTH1 and control groups (p<0.05). Conclusions: Our results suggest that continual intermittent PTH administration before and after dental implant placement is effective for the achievement of favorable stability and osseointegration in the presence of osteoporosis.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1678-77572017000500498&lng=en&tlng=enDental implantsParathyroid hormoneOsseointegration |
| spellingShingle | Yoshifumi Oki Kazuya Doi Yusuke Makihara Reiko Kobatake Takayasu Kubo Kazuhiro Tsuga Effects of continual intermittent administration of parathyroid hormone on implant stability in the presence of osteoporosis: an in vivo study using resonance frequency analysis in a rabbit model Journal of Applied Oral Science Dental implants Parathyroid hormone Osseointegration |
| title | Effects of continual intermittent administration of parathyroid hormone on implant stability in the presence of osteoporosis: an in vivo study using resonance frequency analysis in a rabbit model |
| title_full | Effects of continual intermittent administration of parathyroid hormone on implant stability in the presence of osteoporosis: an in vivo study using resonance frequency analysis in a rabbit model |
| title_fullStr | Effects of continual intermittent administration of parathyroid hormone on implant stability in the presence of osteoporosis: an in vivo study using resonance frequency analysis in a rabbit model |
| title_full_unstemmed | Effects of continual intermittent administration of parathyroid hormone on implant stability in the presence of osteoporosis: an in vivo study using resonance frequency analysis in a rabbit model |
| title_short | Effects of continual intermittent administration of parathyroid hormone on implant stability in the presence of osteoporosis: an in vivo study using resonance frequency analysis in a rabbit model |
| title_sort | effects of continual intermittent administration of parathyroid hormone on implant stability in the presence of osteoporosis an in vivo study using resonance frequency analysis in a rabbit model |
| topic | Dental implants Parathyroid hormone Osseointegration |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1678-77572017000500498&lng=en&tlng=en |
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