“…There have been a number of studies that have examined preventive procedures in periodontally healthy and maintenance subjects (Suomi et al 1971, Soderholm & Egelberg 1982, Soderholm et al 1982, Glavind et al 1984, Albandar et al 1994, Haffajee et al 2001b, Heitz‐Mayfield et al 2003, Schatzle et al 2003, Axelsson et al 2004). However, there are a limited number of reports describing the microbial outcomes of these procedures (Loos et al 1988, Murray et al 1989, McNabb et al 1992, al Yahfoufi et al 1995, Hellstrom et al 1996, Nogueira et al 2000, Ximenez‐Fyvie et al 2000b, Haffajee et al 2001a, Goodson et al 2004).…”