MODIFIED CLINICAL APPROACH FOR IMPROVED AESTHETICS IN FULL-ARCH RESTORATION
Figure 1. The platform-switching design of the implants facilitated preservation of bone at the collar and the gaining of supra-crestal fibres
Figure 2. Concave profile of the provisional abutment.
Figure 3. Convex profile of the final individual abutment
higher the peri-implant soft tissue, the lower the risk of bone loss in the process of increasing the biological width. 8 Through decreased bone loss and a resulting reduction in bone instability, as well as increased thickness of the tissue, more supra-crestal fibres can be gained( Fig. 1). Owing to this concept in designing the provisional abutment, the final abutment and the crown, we were able to manipulate the soft tissue and gain an inter-implant papilla length comparable to the length of the papilla between two natural teeth( 5 mm).
3. Abutment The running room for the provisional abutment
Figure 4. Narrow triangles between the final crowns, restoring the physiological and aesthetic contact points
was concave( Fig. 2). 9 After osseointegration, we modified the running room to a straight or slightly convex profile, especially approximally. The tissue extended from 0.5 to 1 mm in the direction of the contact point( Fig. 3). The final construction followed the natural parameters of the interdental contact points in the natural dentition, as defined by Chu et al. 10 Designing the interdental spaces as narrow triangles with slight convexities, we managed to guide this tissue by another 0.5 to 1 mm to the ideal contact point, and give the entire construction a natural appearance( Fig. 4).
4. Clinical case
A 50-year-old patient presented a tooth mobility of Grade II to III( Fig. 5). He wished to have his
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