Preparation of biological restoration
Teeth selected from the tooth bank were reshaped to be used as natural post and crown using crown preparation kit (Shofu) [Figure 6]. The roots that were shaped to function as posts were strengthened by retro filling of flowable composite material [Figure 7].
Tooth selected and prepared for use as biological restoration was then autoclaved for 30 minutes at 121 o C and 15 lbs pressure before cementation. The tooth was then tried for fit and adjustments were done [Figure 8]. The prepared post and crown were cemented using dual cure resin modified GIC (GC Fuji Plus) [Figure 9].
Composite restoration
Due to extensive crown destruction, the use of intracanal posts was necessary. Omega loop intracanal retainers were fabricated on the dental casts. The length of the post was kept less than 5 mm beyond the cementoenamel junction and never beyond cervical one-third of the root length. The composite restorations were done after placement of intracanal retainers [Figure 10] and [Figure 11]. Nanofilled composite material (Filtek Z-350, 3M ESPE) and self-etching adhesive (Adper Prompt L-Pop Self-Etch Adhesive, 3M ESPE) were used for reconstructing and shaping of the crown for the composite restoration using layering technique. After checking the occlusion, and the removal of any interference, final finishing and polishing of the restorations were performed with polishing disks and polishing strips (Shank FG, Shofu) [Figure 12] and [Figure 13]. Pretreatment and post-treatment photographs of cases are presented in [Figure 14] and [Figure 15].