[Clinical observation of free-standing Core-Vent dental implant to replace premolar (1)]

According to Dr. Niznick's alternative two-stage surgical technique, the author installed 3.5 mm x 8 mm Core-Vent Implant (Core-Vent Corporation, Encino, CA, U.S.A.) as a free standing abutment to replace lower left second premolar of 50-year-old male patient. From the foregoing procedure the author obtained the following results: 1. Free-standing Core-Vent Implants can be used to replace single premolar effectively without reduction of adjacent natural teeth. 2. Rotation of screw-in titanium insert (abutment) was observed under occlusal force. 3. Adjustment of height of titanium coping insert was necessary. 4. From the oral examination, patient comments, panoramic and periapical radiograph, there were no evidences in gingival inflammation, pain, reduction of alveolar bone level during the observation period of 13 months postoperatively.