Periodontal treatment of furcation involvement at the mandibular first molar with a follow-up of 27 years

Su Wenqi, Shi Jiahong, Cheng Yan, Lei Lang, Li Houxuan

West China Journal of Stomatology . 2021, (3): 347 -354 . DOI: 10.7518/hxkq.2021.03.016