case_images: PMC7301219_01
case_images: Initial clinical situation.
case_images: CRID2020-6525797.001.jpg
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case_images: fig1
case_images: The appearance and consistency of the soft tissues were good (Figure 1).
case_images: Initial orthopantomography.
case_images: CRID2020-6525797.002.jpg
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case_images: fig2
case_images: The orthopantomograph confirmed the agenesis of the upper lateral incisors with a reduced development of the alveolar process in a mesiodistal direction (Figure 2).
case_images: Buccal view of the defects on 12 and 22.
case_images: CRID2020-6525797.003.jpg
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case_images: fig3
case_images: Two monocortical block grafts were collected from the symphysis and fixed at the buccal aspect of the bone defects with osteosynthesis screws (Figures 3-5).
case_images: Bone blocks' removal from the mandibular symphysis.
case_images: CRID2020-6525797.004.jpg
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case_images: fig4
case_images: Two monocortical block grafts were collected from the symphysis and fixed at the buccal aspect of the bone defects with osteosynthesis screws (Figures 3-5).
case_images: Bone block stabilization by screws.
case_images: CRID2020-6525797.005.jpg
case_images: PMC7301219_01_CRID2020-6525797.005.jpg
case_images: fig5
case_images: Two monocortical block grafts were collected from the symphysis and fixed at the buccal aspect of the bone defects with osteosynthesis screws (Figures 3-5).
case_images: Coverage of the surgical site with deproteinized bovine bone (Bio-Oss , Geistlich Biomaterials, Wolhusen, Switzerland).
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case_images: PMC7301219_01_CRID2020-6525797.006.jpg
case_images: fig6
case_images: Switzerland) and native lyophilized type I resorbable collagen membranes from equine origin (Paroguide , GABA VEBAS srl, Rome, Italy) were used to cover the block graft at each site (Figure 6).
case_images: Implant placement.
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case_images: fig7
case_images: After 6 months of uneventful healing, fixation screws were removed, and two 3.25 x 13 mm implants were placed in a prosthetically guided position with the aid of a surgical stent (Figure 7).
case_images: Clinical situation at 8 years.
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case_images: fig8
case_images: Clinical and radiological evaluations were conducted at 8 years (Figures 8 and 9) and 20 years from the prosthetic loading (Figures 10 and 11).
case_images: Orthopantomography at 8 years.
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case_images: fig9
case_images: Clinical and radiological evaluations were conducted at 8 years (Figures 8 and 9) and 20 years from the prosthetic loading (Figures 10 and 11). The 8-year orthopantomograph revealed no detectable marginal bone resorption, calculated as the distance between the most apical bone-to-implant contact visible in the scanned image and the implant-abutment connection level at the mesial and distal aspects (Figure 9).
case_images: Clinical situation at 20 years.
case_images: CRID2020-6525797.010.jpg
case_images: PMC7301219_01_CRID2020-6525797.010.jpg
case_images: fig10
case_images: Clinical and radiological evaluations were conducted at 8 years (Figures 8 and 9) and 20 years from the prosthetic loading (Figures 10 and 11).
case_images: Orthopantomography at 20 years.
case_images: CRID2020-6525797.011.jpg
case_images: PMC7301219_01_CRID2020-6525797.011.jpg
case_images: fig11
case_images: Clinical and radiological evaluations were conducted at 8 years (Figures 8 and 9) and 20 years from the prosthetic loading (Figures 10 and 11). The same measurements were performed in the 20-year orthopantomography (Figure 11); however, it was not possible to obtain reliable data due to metal artifacts.