植牙漸漸成為牙科常規治療。由於植牙日益普遍，併發症也隨之而來。本篇主要目的在探討植體周圍炎所 造成的骨缺損。植牙手術中以不同類的骨粉作為引導骨再生術的填補材料，並以可吸收再生膜覆蓋，以化學藥 物及雷射處理人工牙根表面。一年後在X光檢查下，發現自體骨比商品乾燥骨有較佳的骨再生表現。(J. Family Dent. 9(4): 37-42, 2015)

Implantology has become a regular treatment in dentistry nowadays. However, dental implantology has just become popular, the complications have been more common. The main purpose of this article is to discuss the treatment outcome of bony defects in peri-implantitis with two kinds of bone substitutes. During the implant surgery, the exposed fixture surface was well treated with chemotherapeutic agent and laser decontaminated, two different kinds of bone powder substitues were used to fill the different sides of defect on the same dental implant for bone regeneration combined with resorbable membrane covered. After one year follow up, the X-ray film showed that the defect side with autogenous bone treated had better filling result than the side with freeze-dried bone substitute treated. (J. Family Dent. 9(4): 37-42, 2015)