The influence of systemically administered oxytocin on the implant-bone interface area: an experimental study in the rabbit.
- Author:
Sung Am CHO
1
;
Sang Hun PARK
;
Jin Hyun CHO
Author Information
- Publication Type:Original Article
- Keywords: Oxytocin; Removal torque test; Histomorphometric parameter; Dental implant
- MeSH: Adult; Animals; Daegu; Dental Implants; Female; Humans; Injections, Intramuscular; New Zealand; Oxytocin*; Rabbits; Torque
- From:The Journal of Advanced Prosthodontics 2014;6(6):505-511
- CountryRepublic of Korea
- Language:English
- Abstract: PURPOSE: The purpose of this study was to assess the effect of systemically administered oxytocin (OT) on the implant-bone interface by using histomorphometric analysis and the removal torque test. MATERIALS AND METHODS: A total of 10 adult, New Zealand white, female rabbits were used in this experiment. We placed 2 implants (CSM; CSM Implant, Daegu, South Korea) in each distal femoral metaphysis on both the right and left sides; the implants on both sides were placed 10 mm apart. In each rabbit, 1 implant was prepared for histomorphometric analysis and the other 3 were prepared for the removal torque test (RT). The animals received intramuscular injections of either saline (control group; 0.15 M NaCl) or OT (experimental group; 200 microg/rabbit). The injections were initiated on Day 3 following the implant surgery and were continued for 4 subsequent weeks; the injections were administered twice per day (at a 12-h interval), for 2 days per week. RESULTS: While no statistically significant difference was observed between the two groups (P=.787), the control group had stronger removal torque values. The serum OT concentration (ELISA value) was higher in the OT-treated group, although no statistically significant difference was found. Further, the histomorphometric parameter (bone-toimplant contact [BIC], inter-thread bone, and peri-implant bone) values were higher in the experimental group, but the differences were not significant. CONCLUSION: We postulate that OT supplementation via intramuscular injection weakly contributes to the bone response at the implant-bone interface in rabbits. Therefore, higher concentrations or more frequent administration of OT may be required for a greater bone response to the implant. Further studies analyzing these aspects are needed.
