As placement of implants into immediate sites involves management of the remaining root structure, these residual roots may be used as a guide for the development of osteotomy. This aids in implant positioning and prevents drill slippage into the residual root spaces during osteotomy drilling. Following completion of the osteotomy, the remaining root structure is extracted prior to implant placement into the site. The aim of this study is to assess the success rate of implants when the residual roots were used as anatomical guides for osteotomy. One hundred implants were placed in 57 patients, and 4 different types of implants were used: 47 Bioner TOP DM implants, 20 Nobel Biocare Replace implants, 25 Biohorizons Tapered Internal implants (Birmingham, Ala), and 8 Alpha-Bio Tec SPI Implants. The implants were placed into 57 patients. Osteotomies were placed through intact residual roots, which acted as anatomical guides for implant surgical placement. Patients had a follow-up period of 2 years, and in that time none reported discomfort after implant placement. There were no signs of peri-implantitis observed in any of the patients. Of all the implants placed, the Bioner TOP DM implant showed the least amount of crestal bone loss. Placing implants through residual roots as an anatomical guide is a useful technique that shows good results over a 2-year follow-up period.
Keywords: anatomical guide; immediate implant; residual roots.