Sinus elevation : Crestal approach using Sinus Elevator & NR Line system

Title: Sinus elevation: Crestal approach using Sinus Elevator & NR Line system Surgical Approach: 1. The layer technique (autogenous bone graft alloplastic graft mat.) should be applied in case of fixture surface exposure. 2. Simplified GBR can be done by using hybrid type graft material like as OSTEON™ ll Collagen. 3. NR Line system of Dentium doesn’t need the countersink drill. It makes simple procedure and give higher insertion torque by keeping a remaining crestal bone.