In a recent Just Ask session, Matthias Karl, a prosthodontist and department head at Saarland University Medical Center, shared invaluable insights on the critical do's and don'ts of implant prosthodontics. With over 160 published papers, Matthias is a leading expert in the field, and he used his experience to highlight common pitfalls in implant restoration.
The discussion began with a “failure festival,” where Matthias showcased real-life cases of implant failures, emphasizing the importance of proper planning. He stressed that many issues arise from poor initial treatment planning, including random placement of mini implants in the mandible or tooth-implant supported combinations that lead to bone loss and peri-implantitis. These cases, often seen in clinical practice, serve as a reminder that meticulous planning is key to successful outcomes.
Matthias also pointed out that implants aren’t the right solution for every patient. In some cases, removable restorations, even for younger patients, may be a better option. He also discussed the risk of mixing components from different manufacturers, which can lead to mechanical issues due to varying precision in parts. This highlights the importance of using compatible and documented components for long-term success.
A significant part of the conversation revolved around the technical aspects of implant restorations. The "passivity of fit" was discussed in-depth, with Matthias explaining that while perfect fit isn't always achievable, minimizing misfit stresses is crucial for implant longevity. He also addressed issues with using zirconia abutments on titanium implants, advocating for careful consideration and research when selecting materials.
For those new to implant prosthodontics, Matthias left three key takeaways: Always understand why a patient lost their teeth, assess if they can maintain proper hygiene with implants, and never forget the fundamental principles learned in dental school. These insights serve as a guide for avoiding common mistakes and achieving better results in implant prosthodontics.