Dynamic Navigation in Trans‐Inferior Alveolar Nerve Implant Placement: A Five‐Year Follow‐Up Case Report

Background Implant‐supported oral rehabilitation is a common procedure in modern dentistry; however, treatment strategies must be tailored to specific clinical scenarios. In cases of severe vertical alveolar bone atrophy, conventional implant placement techniques may pose significant risks to the inferior alveolar nerve (IAN). Method This case report describes the use of dynamic navigation‐assisted surgery for trans‐IAN implant placement in a 63‐year‐old female patient presenting with peri‐implantitis and a lack of keratinized gingiva. Clinical and radiographic assessments showed advanced peri‐implant bone loss of 4.42 mm mesially, 5.25 mm distally, 5.22 mm lingually and 5.27 mm buccally, with implant‐bone contact of 3.32 mm lingually and 2.61 mm buccally. The residual alveolar bone height from the crest to the mandibular canal measured 4.58 mm and 6.45 mm on the lingual and buccal aspects, respectively. Treatment included removal of the failed implant, keratinized gingival grafting, and subsequent trans‐IAN implant placement using dynamic navigation. Results Dynamic navigation facilitated accurate implant positioning with a clearance of 1.06 mm from the IAN. Over a 5‐year follow‐up period, no biological or mechanical complications were observed, and no neurosensory disturbances were reported. Conclusion This case indicates the potential value of dynamic navigation in improving surgical accuracy and safety during implant placement in anatomically complex regions, thereby minimizing the risk of IAN injury, reducing surgical invasiveness, accelerating postoperative recovery, and eliminating the need for vertical bone augmentation.