In this report, 749 nonmobile dental implants were explanted in 355 patients. Figure 1 shows the anatomical location of the dental implants. The 50.6% of the removed implants were located in the maxilla and 48.2% of the cases were located in the anterior areas. Attending to the causes of explantation, the vast majority of the explantations occurred due to biological complications (86.2%), followed by mechanical complications (11.9%) and surgical intervention (1.9%). Figure 2 shows the distribution of the dental implants according to the cause of implant removal.

The bone level of the explanted implants was homogenously distributed among bone level categories. In this sense, 26.4% of the implants were included in the 0–25% of bone level category, 24.3% in the 26–50% of bone level category, 26.9% in the 51–75% of bone level category and, finally, 22.4% of the explanted implants were in the 76–100% bone level category. The implants were completely covered by bone (100%) in the 76–100% of bone level category were removed due to mechanical problems.

Regarding the success rate, 98.4% of the dental implants were successfully removed following the described procedure. Among these successful explantations, the use of specialized trephine burs was needed in 7.5% of the cases. It was studied if the bone level was associated with the use of trephine burs. There was no statistically significant (p = 0.249) relationship between trephine bar use and bone level.

The extraction kit also demonstrated to cause minimal complications that occurred in 1.3% of the extracted implants. All the detected complications were identified as fractures of the implant. There was no detection of other side effects. From the detected implant fractures, 50% were identified as fissure lines at the implant neck but allowed the successful removal of the implant. The other implant fractures were located at the apical third of the implant body.