When designing a definitive prosthesis for these patients , factors such as the prognosis of the abutment teeth , distribution of the abutment , periodontal attachment levels , crown root ratio and the requirements of splinting must be taken into consideration 當這類患者要進入最后階段之最終補綴治療前,牙周疾病必須是經過牙周病專家確實控制下,并經試帶一段時間之良好暫用修種體后才能開始制作。