[1] Tokyo Dent Coll, Dept Oral & Maxillofacial Surg, Chiba 2618502, Japan
[2] Showa Univ, Dept Oral Rehabil, Tokyo, Japan
[3] Tokyo Univ Hosp, Dept Oral Maxillofacial Surg Dent & Orthodont, Tokyo 113, Japan
[4] Tohoku Univ Hosp, Dent Ctr, Clin Maxillooral Disorders, Sendai, Miyagi, Japan
[5] Kyoto Univ, Grad Sch Med, Dept Plast Surg, Kyoto, Japan
[6] Niigata Univ, Grad Sch Med & Dent Sci, Div Oral & Maxillofacial Surg, Niigata, Japan
[7] Osaka Univ, Grad Sch Dent, Div Funct Oral Neurosci, Osaka, Japan
[8] Showa Univ, Tokyo, Japan
[9] Osaka Med Ctr, Dept Oral & Maxillofacial Surg, Osaka, Japan
[10] Res Inst Maternal & Child Hlth, Osaka, Japan
[11] Tokyo Med & Dent Univ, Grad Sch, Div Maxillofacial Neck Reconstruct, Tokyo, Japan