Dr. Sang Kuk Lee (Korea)

Brief CV

• Sang-Kuk Lee, DDS, PhD

• PhD in Orthodontics, Graduate School of Dentistry, Pusan National University

• Internship Residency, Dept. of Orthodontics, PNU Dental Hospital; Orthodontic Specialist

• Clinical and Adjunct Professor, Pusan National University, School of Dentistry

• Principal Dentist and Owner, Sang-Kuk Lee Dental Clinic, Busan

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National Round

• Title : Immediate Implant Placement with Tilted & Short Implants : Fast-Track Rehabilitation with BlueDiamond Cuff® & AXA Abutment

• Abstract : Conventional rehabilitation of posterior atrophic sites often relies on staged augmentation (GBR/sinus lift) with delayed implant placement, increasing surgical episodes and prolonging treatment. We adopted an augmentation-sparing, angulation-guided immediate implant placement (IIP) workflow that anchors in sound native bone while maintaining a screw-retained prosthetic design. Five post-extraction cases (two at the maxillary left first and second molars, two at the mandibular right second molars, and one at the mandibular right first premolar) were managed with angled IIP to bypass the maxillary sinus or the inferior alveolar nerve. We used MegaGen BlueDiamond Cuff implants with 7 mm threaded bodies and transgingival cuff heights of 2 or 4 mm (total lengths 9 or 11 mm), tailored to anticipated extra-alveolar cuff exposure. Prosthetic realignment and retrievability were achieved with AXA angled multi-unit abutments at 12, 20, or 30 deg (all 3 mm cuff height). Immediate-loading (IL) criteria were insertion torque 35 Ncm or ISQ 70; when met, immediate provisionalization within 48 hours was delivered using splinted PMMA with weekly occlusal refinements for 8-12 weeks, followed by scan transfer and definitive screw-retained prostheses. One exception occurred in the maxillary left first molar/second molar case: the maxillary left first molar did not meet the torque threshold, was submerged, and received delayed loading; all other cases proceeded with IL. Soft-tissue management targeted 2 mm of keratinized gingiva, with contour augmentation as indicated. Mean time to definitive prosthesis was 11.2 weeks. At 8 months, implant survival was 100, mean marginal bone loss was 0.34 mm from baseline, and no prosthetic/mechanical or biologic complications were recorded. Within the limits of this consecutive series, an augmentation-sparing, angulation-guided IIP protocol using BlueDiamond Cuff implants (total 9 or 11 mm from 7 mm thread plus 2 or 4 mm cuff) and AXA angled multi-unit abutments (12/20/30 deg, 3 mm cuff) provided expedited rehabilitation without staged augmentation, with early hard- and soft-tissue stability and patient-reported satisfaction comparable to contemporary staged approaches.