PMC9085336_01
(a) Clinical aspect of the central left incisor with a great decay on the cementoenamel junction. (b and c) Portion of the root after being shaped extraorally. The periodontal ligament fibers on the root remain untouched and visible on the buccal side.
CRID2022-7455050.001.jpg
PMC9085336_01_CRID2022-7455050.001.jpg
fig1
An 88-year-old man with a noncontributory medical history presented at private dental clinic in Catania, Italy, with a large cervical carious lesion on an endodontically treated upper left central incisor (Figure 1(a)). After the shaping, the root fragment measurement performed with an Iwanson caliper registered a 1 mm thickness, 4,5 mm height, and 3,5 mm width (Figures 1(b) and 1(c)).
(a) Final tissue healing after 6-month follow-up. No signs of inflammation or rejection of the fragment were observed. (b) The final definitive restoration 5-year follow-up; the gingival tissues are healed and preserved.
CRID2022-7455050.002.jpg
PMC9085336_01_CRID2022-7455050.002.jpg
fig2
At this time a final optical impression was taken with CEREC CAD-CAM technology (Dentsply-Sirona), and a definitive lithium disilicate screw retained crown (IPS e.max - Ivoclar Vivadent) was realized (Figure 2(b)). Intraoral pictures were taken at every follow-up examination (Figure 2(a)).
(a) At 6-month follow-up, CBCT images show the replanted root membrane in strict contact with the implant abutment and the bundle bone. The arrow indicates the portion of root not covered by bone. (b) At 48 months, CBCT images are compatible with the complete covering of the root membrane (see the arrow), as if there had been migration of the bone over all the root membrane surface.
CRID2022-7455050.003.jpg
PMC9085336_01_CRID2022-7455050.003.jpg
fig3
A CBCT exam was performed at 6- and 48-month follow-up to evaluate healing or any tissue alteration (Figure 3). Moreover, the CBCT images are suggestive of the buccal bone growth over the portion of root membrane which initially protruded beyond the margin of the bone crest (Figure 3(b)).