●DR. PROFITT的演讲重点摘要~4)有关于ROOT RESORPTION
What have we learned about resorption caused by treatment?
root resorption comes in 3 forms:
1)moderate generalized resorption
the subject of most recent papers, an evitable comsequence of treatment,not related to any major factor,are some patient more susceptable to root resorption,why?
2)severe generalized resorption
probably not related to orthodontics can occur in the absence of treatmentcause totally unknown not thyroid deficency(!)
3)severe localized resorption
definitely related to orthodontics,maxillary incisors at particular risk,major cause identified