11. Graetz et al 2017 對於 Effect of periodontitis history on implant success: a long-term evaluation during supportive periodontal therapy,牙周病患與健康病人差異研究,何 者為非:
(A) Implant survival between 2 groups is comparable over 5 years
(B) marginal bone loss(MBL) was no significantly different
(C) Prognostic factors for implant loss appeared to be the presence of residual periodontal pockets of ≥4 mm, 3
(D) Prognostic factors for implant loss appeared to be bone height