[1] Univ Michigan, Sch Dent, Dept Periodont & Oral Med, Ann Arbor, MI USA
[2] G dAnnunzio Univ Chieti Pescara, Dept Med Oral & Biotechnol Sci, Chieti, Italy
[3] G dAnnunzio Univ Chieti Pescara, Ctr Adv Studies & Technol CAST, Chieti, Italy
[4] Univ Alabama Birmingham, Sch Dent, Dept Periodontol, Birmingham, AL USA
[5] St Camillus Int Univ Hlth & Med Sci UniCamillus, Sch Dent, Rome, Italy
[6] UCAM Univ Catolica San Antonio Murcia, Fac Med, Murcia, Spain