PMC3881385_01
Postobturation occlusal view showing the amount of residual tooth structure.
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fig1
On clinical examination tooth number 36 was root canal treated one month back (Figure 1).
Tooth preparation for endocrown.
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fig2
The preparation consisted of a circular equigingival butt-joint margin and central retention cavity into the entire pulp chamber constructing both the crown and the core as a single unit. The appropriate reduction of the buccal and lingual walls was done (Figure 2).
CAD/CAM image.
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fig3
The 3D scanning of the individual die and the antagonist arch for occlusal function (virtual articulation) were done. The milling was then initiated on a monolithic solid zirconia block (Metoxit AG, Thayngen, Switzerland) (Figures 3 and 4).
Tissue surface depicting the core and crown fabricated as a single unit.
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fig4
The 3D scanning of the individual die and the antagonist arch for occlusal function (virtual articulation) were done. The milling was then initiated on a monolithic solid zirconia block (Metoxit AG, Thayngen, Switzerland) (Figures 3 and 4).
Occlusal view following final cementation.
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fig5
Buccal view of tooth 36 depicting the occlusion and imperceptible margins.
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fig6
PMC3881385_02
Occlusal view showing the amount of residual tooth structure postobturation.
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fig7
Clinical and radiographic evaluation was done and a 28-month followup showed no secondary caries, fracture, discoloration or loosening/decementation of the crown (Figures 7, 8, 9, 10, 11, and 12).
Tooth preparation for pressable ceramic endocrown.
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fig8
Clinical and radiographic evaluation was done and a 28-month followup showed no secondary caries, fracture, discoloration or loosening/decementation of the crown (Figures 7, 8, 9, 10, 11, and 12).
Tissue surface of pressed endocrown.
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fig9
Clinical and radiographic evaluation was done and a 28-month followup showed no secondary caries, fracture, discoloration or loosening/decementation of the crown (Figures 7, 8, 9, 10, 11, and 12).
Occlusal view following final cementation.
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fig10
Clinical and radiographic evaluation was done and a 28-month followup showed no secondary caries, fracture, discoloration or loosening/decementation of the crown (Figures 7, 8, 9, 10, 11, and 12).
Buccal view of tooth 36 highlighting the excellent shade match and finish.
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fig11
Clinical and radiographic evaluation was done and a 28-month followup showed no secondary caries, fracture, discoloration or loosening/decementation of the crown (Figures 7, 8, 9, 10, 11, and 12).
Radiographic view, postcementation. The supragingival finish line is clearly visible.
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fig12
Clinical and radiographic evaluation was done and a 28-month followup showed no secondary caries, fracture, discoloration or loosening/decementation of the crown (Figures 7, 8, 9, 10, 11, and 12).