case_images: PMC10822917_01
case_images: (A) (a) Frontal images of the patient before the operation; (b,c) intraoral images of the patient before the operation. (B) (a) Frontal images of the patient 5 months after the permanent restoration; (b,c) intraoral images of the patient 5 months after the permanent restoration.
case_images: fmed-11-1335043-g001.jpg
case_images: PMC10822917_01_fmed-11-1335043-g001.jpg
case_images: fig1
case_images: Tooth 21 had a post and a core crown (Figure 1A). The final crown restoration was then completed by digitizing the casts (Figure 1B).
case_images: (A) (a,b) CBCT images of the patient before the operation. (B,C) Preoperative planning for implant placement.
case_images: fmed-11-1335043-g002.jpg
case_images: PMC10822917_01_fmed-11-1335043-g002.jpg
case_images: fig2
case_images: Cone beam computed tomography (CBCT) revealed the absence of a labial bone wall on tooth 22, a remaining 1 mm bone wall on the labial side of the root apex, and a 17.2 mm*8.9 mm*4.7 mm shadow in the periapical region of the root apices of teeth 21 and 22, with the narrowest width on the sagittal plane being approximately 5 mm (Figure 2A). The oral cavity of patient was scanned, and a three dimensional (3D) printer was used to create a positioning guide (Figures 2B,C).
case_images: Intraoperative images. (A,B) Removal of cyst tissue and affected teeth. (C) The robot performs drilling and implant placement based on a pre designed path. (D) The implant has been placed in the alveolar bone. (E) Placement of bone powder to fill bone defects. (F) Tightly sutured wound.
case_images: fmed-11-1335043-g003.jpg
case_images: PMC10822917_01_fmed-11-1335043-g003.jpg
case_images: fig3
case_images: SLA, 3.3 mm*12 mm) was inserted intraoperatively with a torsional force of approximately 35 N cm, achieving satisfactory initial stability. Subsequent to the placement of bone powder in the labial bone defect, collagen and RPF membranes (Bio-Gide 13 mm*25 mm; Bio-Oss, 0.25 g, Switzerland) were placed, and a tension-free suture closed the wound (Figure 3).
case_images: (A) Analysis of soft tissue recession using oral scanning data (soft tissue volumes were compared by comparing pre-and post-operative oral scan data, and color represented differences in gingival changes, which could be defined by the right scale). (B) Analysis of bone volume changes using CBCT (red represents preoperative bone tissue, blue represents postoperative bone tissue, and green represents implants and restorations). (C) Postoperative evaluation: comparing accuracy of preoperative planned implant position (green) with postoperative position. (D) Deviations of planned (gray) and actual position (red) of implant.
case_images: fmed-11-1335043-g004.jpg
case_images: PMC10822917_01_fmed-11-1335043-g004.jpg
case_images: fig4
case_images: Implant discrepancies were evaluated by comparing the pre-designed STL files with the immediate post-operative CBCT (Figures 4C,D). Changes in the soft and hard tissues before the operation and after the operation were compared (Figures 4A,B).