Abstract
Aging is associated with a function decline in tissue homeostasis and tissue repair. Aging is also associated with an increased incidence in osteopenia and osteoporosis, but whether these low bone mass diseases are a risk factor for delayed bone healing still remains controversial. Addressing this question is of direct clinical relevance for dental patients, since most implants are performed in older patients who are at risk of developing low bone mass conditions. The objective of this study was to assess how an osteopenic/osteoporotic phenotype affected the rate of new alveolar bone formation. Using an ovariectomized (OVX) rat model, the rates of tooth extraction socket and osteotomy healing were compared with age-matched controls. Imaging, along with molecular, cellular, and histologic analyses, demonstrated that OVX produced an overt osteoporotic phenotype in long bones, but only a subtle phenotype in alveolar bone. Nonetheless, the OVX group demonstrated significantly slower alveolar bone healing in both the extraction socket, and in the osteotomy produced in a healed extraction site. Most notably, osteotomy site preparation created a dramatically wider zone of dying and dead osteocytes in the OVX group, which was coupled with more extensive bone remodeling and a delay in the differentiation of osteoblasts. Collectively, these analyses demonstrate that the emergence of an osteoporotic phenotype delays new alveolar bone formation.
| Original language | English |
|---|---|
| Pages (from-to) | 212-219 |
| Number of pages | 8 |
| Journal | Bone |
| Volume | 112 |
| DOIs | |
| Publication status | Published - Jul 1 2018 |
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All Science Journal Classification (ASJC) codes
- Endocrinology, Diabetes and Metabolism
- Physiology
- Histology
Cite this
An osteopenic/osteoporotic phenotype delays alveolar bone repair. / Chen, Chih Hao; Wang, Liao; Serdar Tulu, U.; arioka, masaki; Moghim, Melika Maghazeh; Salmon, Benjamin; Chen, Chien Tzung; Hoffmann, Waldemar; Gilgenbach, Jessica; Brunski, John B.; Helms, Jill A.
In: Bone, Vol. 112, 01.07.2018, p. 212-219.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - An osteopenic/osteoporotic phenotype delays alveolar bone repair
AU - Chen, Chih Hao
AU - Wang, Liao
AU - Serdar Tulu, U.
AU - arioka, masaki
AU - Moghim, Melika Maghazeh
AU - Salmon, Benjamin
AU - Chen, Chien Tzung
AU - Hoffmann, Waldemar
AU - Gilgenbach, Jessica
AU - Brunski, John B.
AU - Helms, Jill A.
PY - 2018/7/1
Y1 - 2018/7/1
N2 - Aging is associated with a function decline in tissue homeostasis and tissue repair. Aging is also associated with an increased incidence in osteopenia and osteoporosis, but whether these low bone mass diseases are a risk factor for delayed bone healing still remains controversial. Addressing this question is of direct clinical relevance for dental patients, since most implants are performed in older patients who are at risk of developing low bone mass conditions. The objective of this study was to assess how an osteopenic/osteoporotic phenotype affected the rate of new alveolar bone formation. Using an ovariectomized (OVX) rat model, the rates of tooth extraction socket and osteotomy healing were compared with age-matched controls. Imaging, along with molecular, cellular, and histologic analyses, demonstrated that OVX produced an overt osteoporotic phenotype in long bones, but only a subtle phenotype in alveolar bone. Nonetheless, the OVX group demonstrated significantly slower alveolar bone healing in both the extraction socket, and in the osteotomy produced in a healed extraction site. Most notably, osteotomy site preparation created a dramatically wider zone of dying and dead osteocytes in the OVX group, which was coupled with more extensive bone remodeling and a delay in the differentiation of osteoblasts. Collectively, these analyses demonstrate that the emergence of an osteoporotic phenotype delays new alveolar bone formation.
AB - Aging is associated with a function decline in tissue homeostasis and tissue repair. Aging is also associated with an increased incidence in osteopenia and osteoporosis, but whether these low bone mass diseases are a risk factor for delayed bone healing still remains controversial. Addressing this question is of direct clinical relevance for dental patients, since most implants are performed in older patients who are at risk of developing low bone mass conditions. The objective of this study was to assess how an osteopenic/osteoporotic phenotype affected the rate of new alveolar bone formation. Using an ovariectomized (OVX) rat model, the rates of tooth extraction socket and osteotomy healing were compared with age-matched controls. Imaging, along with molecular, cellular, and histologic analyses, demonstrated that OVX produced an overt osteoporotic phenotype in long bones, but only a subtle phenotype in alveolar bone. Nonetheless, the OVX group demonstrated significantly slower alveolar bone healing in both the extraction socket, and in the osteotomy produced in a healed extraction site. Most notably, osteotomy site preparation created a dramatically wider zone of dying and dead osteocytes in the OVX group, which was coupled with more extensive bone remodeling and a delay in the differentiation of osteoblasts. Collectively, these analyses demonstrate that the emergence of an osteoporotic phenotype delays new alveolar bone formation.
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U2 - 10.1016/j.bone.2018.04.019
DO - 10.1016/j.bone.2018.04.019
M3 - Article
VL - 112
SP - 212
EP - 219
JO - Bone
JF - Bone
SN - 8756-3282
ER -