IADR Abstract Archives
Sutural Loading in Bone- versus Tooth-Borne Maxillary Expansion: Ex-Vivo Study
Objectives: The purpose of this study was to evaluate the overall effects of expansion in craniofacial sutures during dental-borne (DBE) and bone-borne (BBE) rapid palatal expansion.
Methods: Custom orthodontic expanders and temporary anchorage devices were designed to simulate expansion in modified pig heads. Strain gauges were placed on various craniofacial sutures and maxillary alveolar bone. Separation of the midpalatal suture, alveolar bone bending, and sutural deformation was calculated during palatal expansion.
Results: The results showed a higher success rate of midpalatal expansion in BBE. Additionally, greater strain was present in alveolar bone during BBE, while both BBE and DBE resulted in deformation in the zygomaticomaxillary and internasal sutures.
Conclusions: The findings in this study suggest that BBE can provide a more effective and successful approach for palatal expansion. However, its use is associated with increased loading of the sutures -- the effects of which need to be thoroughly investigated.
Methods: Custom orthodontic expanders and temporary anchorage devices were designed to simulate expansion in modified pig heads. Strain gauges were placed on various craniofacial sutures and maxillary alveolar bone. Separation of the midpalatal suture, alveolar bone bending, and sutural deformation was calculated during palatal expansion.
Results: The results showed a higher success rate of midpalatal expansion in BBE. Additionally, greater strain was present in alveolar bone during BBE, while both BBE and DBE resulted in deformation in the zygomaticomaxillary and internasal sutures.
Conclusions: The findings in this study suggest that BBE can provide a more effective and successful approach for palatal expansion. However, its use is associated with increased loading of the sutures -- the effects of which need to be thoroughly investigated.