A Relationship between Periodontal Parameter of the Natural Tooth and Clinical Results of Hydroxyapatite (HA) -coated Implants

With regard to implant treatment patients, to whom HA-coated implants were clinically applied, the clinical course of implant bodies was observed, and periodontal parameters of the remaining teeth in the oral cavity, such as plaque index, probing values, presence of gingival bleeding during probing, and amounts of alveolar hone loss at the time of implantation, were investigated.Long-term prognostic bone resorption around HA-coated implant bodies, and dislodgment of HA-coated implant bodies were more frequently observed in cases with larger amounts of alveolar bone loss in the remaining tooth area and larger number of inflammatory periodontal pockets in the same oral cavity at the first examination, although the periodontal pocket values and inflammation improved by the periodontal treatment performed before implant treatment.These results suggested the influence of previous presence of periodontal disease in the remaining tooth area on implantitis around implant bodies in the same oral cavity, and the possibility that previous presence of periodontal disease could be used as a clinical parameter of preoperative diagnosis before starting implant treatment, to which HA-coated implants were applied.