Table 2: The Databases Searched the Search Strategy Used in this Systematic Review (as of July 22, 2009)

Electronic Databases Search Strategy (No of Hits Per Database)
MEDLINE
searched via PubMed
www.ncbi.nlm.nih.gov/sites/entrez/
((orthodont*) OR (malocclusion*) OR (functional orthopedic*) OR (crossbite*) OR (openbite*) OR (open bite*) OR (deepbite*) OR (deep bite*) OR (overbite*) OR (prognath*) OR (orthognath*) OR (retrognath*) OR (mandibular deficienc*) OR (mandibular excess) OR (maxillary deficienc*) OR (maxillary excess) OR (growth modification) OR (dentofacial orthopedics) OR (maxillary growth) OR (mandibular growth) OR (molar relationship*) OR (occlusal problem*) OR (occlusal anomal*) OR (occlusal discrepanc*) OR (tooth problem*) OR (tooth anomal*) OR (tooth discrepanc*) OR (vertical excess) OR (vertical deficienc*) OR (tooth movement*) OR (tooth correction*) OR (teeth correction*) OR (tooth alignment*) OR (teeth alignment*) OR (distal movement*) OR (mesial movement*) OR (distalization) OR (mesialization) OR (functional applianc*) OR (removable applianc*) OR (fixed applianc*)) AND (meta-anal*)
(119)

EMBASE meta analys* AND orthodont*
www.embase.com (5)

Cochrane Reviews meta analys* AND orthodont*
searched via The Cochrane Library (35)
www.thecochranelibrary.com

Google Scholar Beta meta analysis orthodontics
www.scholar.google.com Limits: title search
(5)

ISI Web of Knowledge meta analys*) AND (orthodont*)
(all databases) (57)
http://apps.isiknowledge.com

Scopus (meta analys*) AND (orthodont*)
www.scopus.com (79)

LILACS & Bibliografia Brasileira de Odontologia meta analys* AND orthodont*
  searched via Virtual Health Library (0)
   http://www.bvs.br
http://bases.bireme.br/cgi-bin/wxislind.exe/iah/online/

Bandolier orthodont*
www.medicine.ox.ac.uk/bandolier/ (0)
meta-analys*
(0)

Extenza orthodontics
www.extenza-eps.com (11)
www.atypon-link.com

African Journals Online orthodont*
www.ajol.info (0)
meta-analys*
(0)

Databases of dissertations

Dissertations & Theses (meta analys*) AND (orthodont*)
searched via ProQuest (2)
http://proquest.umi.com/login

Theses (University of Glaskow) meta analys*
http://eleanor.lib.gla.ac.uk/search~S7/ (2)

German National Library of Medicine (ZB MED)
searched via http://opac.zbmed.de/
(((Freie Suche = "Metaanalyse" OR Freie Suche = "Metaanalysen" OR Freie Suche = "Metaanalyses" OR Freie Suche = "Metaanalysis" OR Freie Suche = "metaanalytic" OR Freie Suche = "metaanalytical" OR Freie Suche = "Metaanalytische" OR Freie Suche = "metaanalytischen" OR Freie Suche = "metaanalytischer" ) AND ( Freie Suche = "ORTHODONT" OR Freie Suche = "orthodontia" OR Freie Suche = "orthodontic" OR Freie Suche = "orthodontica" OR Freie Suche = "ORTHODONTICS" OR Freie Suche = "Orthodontie" OR Freie Suche = "Orthodontik" OR Freie Suche = "orthodontikē" OR Freie Suche = "orthodontique" OR Freie Suche = "orthodontiques" OR Freie Suche = "orthodontisch" OR Freie Suche = "orthodontischchirurgischen" OR Freie Suche = "Orthodontische" OR Freie Suche = "orthodontischem" OR Freie Suche = "orthodontischen" OR Freie Suche = "orthodontischer" OR Freie Suche = "orthodontisches" OR Freie Suche = "orthodontischstomatologische" OR Freie Suche = "orthodontist" OR Freie Suche = "Orthodontists")))
(0)