Table 3 Inclusion and exclusion criteria overview of reviews

Study design

Systematic reviews with or without meta-analyses

All other study designs

Population

Adults aged 18 years and above with diagnosed periodontal disease

People without diagnosed periodontal disease

Children, pregnant women, populations with increased risks for periodontal diseases

Interventions

Early treatments for periodontal diseases (non-surgical treatments)

Surgical treatments

Comparison

No treatment or other early (non-surgical) treatments

Surgical treatments

Outcomes

No limitations

None

Setting

No limitations

Country

At least 50% of included studies have to be conducted in countries having a very high UNESCO human development index: Andorra, Argentina, Australia, Austria, Bahrain, Belgium, Brunei Darussalam, Canada, Chile, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hong Kong China (SAR), Hungary, Iceland, Ireland, Israel, Italy, Japan, Korea (Republic of Korea), Kuwait, Latvia, Liechtenstein, Lithuania, Luxembourg, Malta, Montenegro, Netherlands, New Zealand, Norway, Poland, Portugal, Qatar, Romania, Russian Federation, Saudi Arabia, Singapore, Slovakia, Slovenia, Spain, Sweden, Switzerland, United Arab Emirates, UK, USA

If countries of primary studies are not reported in the systematic review we will include this reference and report on doubts about the applicability to countries having a very high UNESCO human development index.

All other countries

Date of search

1/2007 onwards

Before 1/2007

Publication language

English, German

Non-English or non-German language