Cases of furcation that involve particular anatomical configurations, i.e., interradicular root proximity / fusion, have long been considered relative contraindications for treatments such as root amputation or hemisection.

• 在面对根岔侵犯并加上牙根合并或紧邻的问题时，牙根切除术或牙齿切半术，在传统上均被视为禁忌。