PMID- 31755105 OWN - NLM STAT- MEDLINE DCOM- 20200914 LR - 20200914 IS - 1943-3670 (Electronic) IS - 0022-3492 (Linking) VI - 91 IP - 5 DP - 2020 May TI - Aminobisphosphonate-treated ewes as a model of osteonecrosis of the jaw and of dental implant failure. PG - 628-637 LID - 10.1002/JPER.19-0213 [doi] AB - BACKGROUND: Bisphosphonate (BP)-related osteonecrosis of the jaw (BRONJ) and dental implant failure are two negative side effects of chronic aminoBP treatment. METHODS: Eleven ovariectomized (OVX) ewes and four ewes subjected to sham surgery (SHAM) were treated as follows: OVX (n = 5): OVX plus saline solution; zoledronic acid-treated group (ZOL) (n = 6): OVX plus ZOL; SHAM (n = 4): SHAM plus saline solution. Extraction of the first upper molar was performed at 1 year, dental implant placement at 2 years, and sacrifice at 28 months. RESULTS: Implants remained in place in SHAM and OVX ewes but were lost in all ZOL ewes. ZOL sheep (2/6) showed inflammation and necrotic bone at mandibular region. No differences in serum calcium (Ca), inorganic phosphate (Pi) or 25-hydroxyvitamin D were observed, whereas bone alkaline phosphatase levels decreased in the three studied groups (P < 0.05). The significantly lowest levels of carboxy-terminal telopeptide of type I collagen were observed in ZOL (P < 0.05), and showed no differences between SHAM and OVX. OVX showed the lowest and ZOL the highest Ca and Pi contents in femur and maxilla (P < 0.05). Bone volume (BV/TV%) and iliac crest were similar at baseline and at month 4. At the end of the study, BV/TV%, proximal femur and hemi-mandible bone mineral content and bone mineral density, and trabeculae number were similar in SHAM and ZOL, and lower in OVX (P < 0.05). CONCLUSION: All ZOL-treated ewes on a schedule similar to that used in cancer patients showed extensive suppression of bone remodeling and implant failure. Some of the ZOL ewes developed BRONJ. CI - (c) 2019 American Academy of Periodontology. FAU - Davison, Mario R AU - Davison MR AD - School of Dentistry, Rio Negro National University, Rio Negro, Argentina. FAU - Lyardet, Leonardo AU - Lyardet L AD - School of Dentistry, Rio Negro National University, Rio Negro, Argentina. FAU - Preliasco, Mariana AU - Preliasco M AD - School of Dentistry, Rio Negro National University, Rio Negro, Argentina. FAU - Yaful, Graciela AU - Yaful G AD - Veterinary Sciences, Rio Negro National University, Rio Negro, Argentina. FAU - Torres, Perla AU - Torres P AD - Veterinary Sciences, Rio Negro National University, Rio Negro, Argentina. FAU - Bonanno, Marina S AU - Bonanno MS AD - Metabolic Bone Diseases Laboratory, Immunology, Genetic and Metabolism Institute (INIGEM), School of Pharmacy and Biochemistry, Clinical Hospital "Jose de San Martin", National Council for Scientific and Technologic Research (CONICET)/Buenos Aires University (UBA), Buenos Aires, Argentina. FAU - Pellegrini, Gretel G AU - Pellegrini GG AD - Metabolic Bone Diseases Laboratory, Immunology, Genetic and Metabolism Institute (INIGEM), School of Pharmacy and Biochemistry, Clinical Hospital "Jose de San Martin", National Council for Scientific and Technologic Research (CONICET)/Buenos Aires University (UBA), Buenos Aires, Argentina. FAU - Zeni, Susana N AU - Zeni SN AD - Metabolic Bone Diseases Laboratory, Immunology, Genetic and Metabolism Institute (INIGEM), School of Pharmacy and Biochemistry, Clinical Hospital "Jose de San Martin", National Council for Scientific and Technologic Research (CONICET)/Buenos Aires University (UBA), Buenos Aires, Argentina. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20191215 PL - United States TA - J Periodontol JT - Journal of periodontology JID - 8000345 RN - 0 (Bone Density Conservation Agents) RN - 0 (Dental Implants) RN - 0 (Diphosphonates) RN - 0 (Imidazoles) SB - IM MH - Animals MH - Bone Density MH - *Bone Density Conservation Agents MH - *Dental Implants MH - Diphosphonates MH - Female MH - Humans MH - Imidazoles MH - *Osteonecrosis MH - Ovariectomy MH - Sheep OTO - NOTNLM OT - bisphosphonate-associated osteonecrosis of the jaw OT - dental implants OT - metabolic bone diseases OT - osteoporosis OT - zoledronic acid EDAT- 2019/11/23 06:00 MHDA- 2020/09/15 06:00 CRDT- 2019/11/23 06:00 PHST- 2019/04/05 00:00 [received] PHST- 2019/10/17 00:00 [revised] PHST- 2019/11/04 00:00 [accepted] PHST- 2019/11/23 06:00 [pubmed] PHST- 2020/09/15 06:00 [medline] PHST- 2019/11/23 06:00 [entrez] AID - 10.1002/JPER.19-0213 [doi] PST - ppublish SO - J Periodontol. 2020 May;91(5):628-637. doi: 10.1002/JPER.19-0213. Epub 2019 Dec 15.