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Effect of high-frequency loading and parathyroid hormone administration on peri-implant bone healing and osseointegration / 国际口腔科学杂志·英文版
International Journal of Oral Science ; (4): 6-6, 2018.
Article in English | WPRIM | ID: wpr-772309
ABSTRACT
The objective of this study is to examine the effect of low-magnitude, high-frequency (LMHF) loading, and anti-osteoporosis medications such as parathyroid hormone (PTH) and bisphosphonates on peri-implant bone healing in an osteoporosis model, and to assess their combined effects on these processes. Thirteen-week-old ovariectomized rats (n = 44) were divided into three groups PTH, alendronate, and saline. After 3 weeks of drug administration, titanium implants were inserted into the tibiae. Each group was subdivided into two groups with or without LMHF loading via whole-body vibration (50 Hz at 0.5 g, 15 min per day, 5 days per week). Rats were killed 4 weeks following implantation. Removal torque test, micro-CT analyses (relative gray (RG) value, water = 0, and implant = 100), and histomorphometric analyses (bone-to-implant contact (BIC) and peri-implant bone formation (bone volume/tissue volume (BV/TV))) were performed. Removal torque values and BIC were significantly differed by loading and drug administration (ANOVA). Post hoc analysis showed that PTH-treated groups were significantly higher than the other drug-treated groups. BV/TV was significantly enhanced by PTH administration. In cortical bone, RG values were significantly increased by loading. In trabecular bone, however, RG values were significantly increased by PTH administration. These findings suggest that LMHF loading and PTH can act locally and additively on the bone healing process, improving the condition of implant osseointegration.
Subject(s)
Full text: Available Index: WPRIM (Western Pacific) Main subject: Parathyroid Hormone / Pharmacology / General Surgery / Tibia / Vibration / Wound Healing / Ovariectomy / Dental Implants / Osseointegration / Alendronate Type of study: Prognostic study Limits: Animals Language: English Journal: International Journal of Oral Science Year: 2018 Type: Article

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Full text: Available Index: WPRIM (Western Pacific) Main subject: Parathyroid Hormone / Pharmacology / General Surgery / Tibia / Vibration / Wound Healing / Ovariectomy / Dental Implants / Osseointegration / Alendronate Type of study: Prognostic study Limits: Animals Language: English Journal: International Journal of Oral Science Year: 2018 Type: Article