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A 70-year-old man has lost several teeth in the top left for a while; one of front teeth is broken (Fig.1 (X-ray): #10). He is so afraid of dental surgery that he requests that 4 implants are to be placed at one time, including 3 for the missing teeth (Fig.1 white outlines). Since bone decreases the height after extraction (indicated by arrowheads), the implants in the back have to be short. Above the upper jaw bone is the nasal cavity (N) and the maxillary sinus (S).
Xin Wei, DDS, PhD, MS 1st edition 09/19/2015, last revision 09/19/2015