Table 1.
Charicteristics of the included studies
| Author and year | Country | Design | Sample size (SS/CTR) | Age (SS/CTR) | Female (SS/CTR) | Outcomes for meta-analysis |
|---|---|---|---|---|---|---|
| Baron 2014 | Canada | Case-controlled | 163/231 | 56.2/58.1 (P > 0.05) | 146/209 (P > 0.05) | Decayed teeth/ Missing teeth/ Filled teeth/Interincisal distance |
| Chu 2011 | China | Case-controlled | 40/40 | (P > 0.05) | (P > 0.05) | Decayed teeth/ Missing teeth/ Filled teeth/DMFT/Interincisal distance/Prevalence of periodontitis/Number of teeth |
| da Silva 2019 | Brazil | Case-controlled | 50/43 | 46/44 | 43/36 | PD/AL/Prevalence of periodontitis |
| Elimelech 2015 | Israel | Case-controlled | 20/20 | 45.36/48.5 (P > 0.05) | 18/15 | PD/BOP/Sites with PD > 4mm |
| Iordache 2019 | Romania | Case-controlled | 43/43 | 43.95/NA (P > 0.05) | 31/NA (P > 0.05) | PD/Number of teeth |
| Isola 2017 | Italy | Case-controlled | 54/55 | 48.7/47.3 (P > 0.05) | 36/30 (P > 0.05) | PD/AL/BOP/Sites with PD > 4mm/Missing teeth |
| Leung 2011 | China | Case-controlled | 36/36 | 35/NA (P > 0.05) | 50.6/NA (P > 0.05) | PD/AL/BOP/Number of teeth |
| Marcucci 2009 | Brazil | Case-controlled | 15/10 | 43.72/31.82 | 13/NA | Interincisal distance |
| Mayer 2013 | Israel | Case-controlled | 12/12 | 48.4 /51.5 (P > 0.05) | 9/7 (P > 0.05) | PD/BOP/Sites with PD > 4mm |
| Pischon 2016 | Germany | Case-controlled | 58/52 | 55.1/52.1(P > 0.05) | 44/43 (P > 0.05) | PD/AL/BOP/DMFT/Missing teeth/Number of teeth |
| Wood 1988 | Canada | Case-controlled | 31/30 | 51.9/50.3 (P > 0.05) | (P > 0.05) | Interincisal distance/DMFT |
SS, Systemic sclerosis, CTR control