08/05/2023
Intentional replantation with 180 degrees rotation using the Benex Extractor in a complicated dental trauma case
I want to share my first Benex Extractor case with you, I am really impressed with this great device! I was surprised how easy and controlled the procedure went.
This 20-year old student was referred to me 2 weeks after the accident took place. Cervical horizontal root fracture and vertical crown-root fracture of 11, and an oblique cervical crown root fracture of 12. The dentist applied the splint, and asked me to proceed with further treatment.
My plan was to preserve both roots, provided there were no additional fractures. I performed endo in 12 and 11, and after having removed the coronal part of 11, I isolated the remaining part of 11 with a rubberdam, did root canal treatment in 11, left space for the post, extracted the root of 11 with the Benex extractor, and replanted it with 180 degrees rotation, so the more deeply fractured palatal side was moved to the labial side, which has a lower crestal bone height. This allows maintenance of more tooth structure. The Benex is great for preserving soft and hard tissue.
Keeping a dry field is a challenge, as was the build-up after replantation. You should leave the screw in the root, otherwise you cannot keep the root in place, and then place wooden wedges for initial stabilization. But, I couldn’t remove the screw without compromising the position, so I decided make a bridge of composite. The bridge was very stable, and after that, I removed the screw, and it was rather easy to place the post and make a very simple and basic build-up. Because of the composite bridge, I couldn’t use a matrix. After I was done with the build-up, and after attaching the tooth to the splint, I removed the composite bridge to facilitate oral hygiene.
12 can be extracted and rotated 180 after 4-5 weeks, as soon as 11 is stable enough. There will be enough grip to use a forceps.