While the biomechanical and biological consequences of a 2 mm IID have been moderately documented, scientific evidence remains exceptionally scarce regarding the clinical fate of an ultra-narrow 1 mm interimplant space.
Clinicians frequently face anatomical constraints, particularly in narrow mesio-distal spaces, where standard spacing rules are impossible to satisfy without compromised positioning or complex orthodontic preparation.
This groundbreaking case report and literature review, boasting an exceptional 10-year follow-up, challenges long-held paradigms in crestal bone preservation.
The study documents the rehabilitation of the maxillary premolar area utilizing a protocol of immediate implant placement and immediate provisionalization with two implants positioned with a narrow IID of only 1 mm.
Surprisingly, long-term radiographic and clinical evaluations revealed that instead of undergoing severe resorption, the interproximal bone crest was remarkably maintained 1.40 mm coronal to the implant shoulders, with the dental papilla successfully closing the interdental embrasure.
Through a comprehensive review of the scarce existing literature, the authors speculate that this outstanding bone maintenance is heavily dictated by key macro- and micro-design features.
The integration of an internal conical connection, the platform-switching feature, subcrestal placement protocols, and the use of concave prosthetic abutments collectively minimized stress concentration and micro-gap biological irritation.
For oral surgeons, periodontists, and prosthodontists, this publication provides critical evidence-based insights that redefine the boundaries of spatial biological limitations, offering a highly predictable framework for managing extremely narrow clinical sites.
Ready to analyze the exact clinical parameters, the 10-year radiographic timeline, and the biological factors that allow bone preservation at a 1 mm interimplant distance?
👉 Click here to read the full article PDF: The impact of a 1 mm interimplant distance on the interproximal crestal bone height: a case report with a 10-year follow-up and literature review.
