Prognosis and evaluation of tooth damage caused by implant fixtures
A 55-year-old male patient visited our hospital primarily requiring repair of the implant placed in the missing maxillary molar area. According to his medical history, he had diabetes, which was controlled with medication. Clinical and radiological tests revealed the loss of several maxillary molars (#16, 17, 25, 26, and 27). The left maxillary first premolar (#24) showed a residual root with periradicular inflammation. On the day of the visit, the root was extracted. Because of the patient's personal situation, 18 months passed before an implant was placed in the corresponding area (Astra, 3.5×9.0 mm; OsseoSpeed TX, Astra Tech AB, Mölndal, Sweden), and allogenic bone graft (Allomatrix; Wright Medical Technology Inc., Arlington, TN, USA) was performed simultaneously. ISQ using Osstell Mentor was 72. Nonetheless, the fixture was observed to be located very close to the adjacent tooth (#23).() In addition, radiolucency was noted in the periradicular area of the fixture. The radiographs taken 14 months later showed that its size was not changed.() There were no specific clinical findings in the adjacent natural teeth. After 1 year, the Periotest value (PTV) using PerioTest C (Medizintechnik Gulden, Hessen, Germany) was -4.