PMC6612380_01
(a) Initial aspect of the metal-ceramic crown with a fractured cast core; (b) aspect of the fractured dental remnant of the cast core inside the root canal, which was later removed; (c) initial radiography.
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fig1
Clinical and radiographic examination revealed the absence of a root fracture, which might preclude maintenance of the tooth (Figure 1(c)).
(a) Molding of the root canals with acrylic resin to make a new cast metallic core; (b) initiation of filling of the inner portion of the metal-ceramic crown with acrylic resin; (c) filling of the inner portion of the metal-ceramic crown with acrylic resin and placement on the coronal remnant of the core molded in resin; (d) fitting of the prosthetic crown on the dental remnant after placement of resin in the inner portion of the crown; (e, f) finished acrylic resin core.
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fig2
Polymerization of the acrylic resin was properly controlled to avoid adhesion of the resin pin inside the root canal (Figure 2(a)).
(a) Finished new cast metallic core; (b) fitting and adaptation of the cast metallic core on the dental remnant; (c) verification of adaptation of the original prosthetic crown on the new cast metallic core; (d) verification of adaptation of the original prosthetic crown on the new cast metallic core.
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fig3
(a) Definitive cementation of prosthetic parts (core and crown); (b) final radiography; (c) verification and adjustments of occlusal contacts.
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fig4