PMC4319353_01
(a) Preoperative clinical view. (b) Access opening in 36. (c) After obturation. (d) Gutta-Percha removed from disto-lingual canal. (e) Primary (lock) post and core wax pattern construction. (f) Fabricated lock post and core wax pattern. (g) Primary (lock) post and core was cemented. (h) Gutta-Percha removed from mesio-lingual canal. (i) Secondary (key) post and core wax pattern construction
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F1
Porcelain fused to metal crown was given as the final restoration over the cast metal post and core restoration [Figure 1].
(a) Secondary (key) post and core was cemented. (b) Radiographic view after the lock and key post was cemented. (c) Porcelain fused metal ceramic crown was cemented (occlusal view). (d) Porcelain fused metal ceramic crown was cemented (buccal view). (e) Radiograph after the preformed metal crown cementation. (f) Six month review. (g) One year review
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F2
The tooth is functioning normally without any signs and symptoms [Figure 2].
PMC4319353_02
(a) Preoperative clinical view. (b) Preoperative radiograph. (c) After obturation. (d) Gutta-Percha removed from distal canal. (e) Primary (lock) post and core wax pattern construction. (f) Primary (lock) post and core was cemented. (g) Secondary (key) post and core was cemented. (h) Porcelain fused metal ceramic crown was cemented (buccal view). (i) Radiograph after the preformed metal crown cementation
CCD-6-88-g003.jpg
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F3
All the clinical steps for the fabrication of lock and key post and core were followed as mentioned in case 1 [Figure 3].
(a) Six month follow-up. (b) One year follow-up
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F4
The tooth is functioning normally without any signs and symptoms [Figure 4].
PMC4319353_03
(a, b) Preoperative clinical view. (c) Preoperative radiograph. (d) After obturation. (e) Primary (lock) post and core was cemented. (f) Secondary (key) post and core was cemented. (g) Porcelain fused metal ceramic crown was cemented - occlusal view. (h) Radiograph of lock and key post. (i) Porcelain fused metal ceramic crown was cemented - buccal view
CCD-6-88-g005.jpg
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F5
All the clinical steps for the fabrication of lock and key post and core were followed as mentioned in case 1 [Figure 5].
(a) Six month follow-up. (b) One year follow-up
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F6
The tooth is functioning normally without any signs and symptoms [Figure 6].
PMC4319353_04
(a) Preoperative clinical view of 46. (b) Obturation in 46. (c) Lock and key post cemented. (d) Porcelain fused metal ceramic crown was cemented - occlusal view. (e) Porcelain fused metal ceramic crown was cemented - buccal view. (f) Six month follow-up
CCD-6-88-g007.jpg
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F7
All the clinical steps for the fabrication of lock and key post and core were followed as mentioned in case 1 [Figure 7].