Review Article
Prevalence of Undiagnosed Diabetes and Prediabetes in the Dental Setting: A Systematic Review and Meta-Analysis
Table 1
Diagnostic criteria for DM and hyperglycaemia adopted by the WHO and ADA.
| Diabetes | FPG | ≥7.0 mmol/L (126 mg/dl) or | 2-hour OGTT | ≥11.1 mmol/L (200 mg/dl) or | HbA1c | ≥6.5% |
| Hyperglycaemia (prediabetes range) | Impaired glucose tolerance (IGT) | | FPG | <7.0 mmol/L (126 mg/dl) | 2-hour OGTT | ≥7.8 and <11.1 mmol/L (140 mg/dl and 200 mg/dl) | Impaired fasting glucose (IFG) | | Fasting plasma glucose | 6.1 to 6.9 mmol/L (110 mg/dl to 125 mg/dl) | 2-hour OGTT | <7.8 mmol/L (140 mg/dl) | HbA1c | A1C ≥ 5.7 to 6.4% (39–47 mmol/mol) |
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Criteria recommended by the American Diabetes Association alone; FPG, fasting plasma glucose; OGTT, oral glucose tolerance test; HbA1c, glycated haemoglobin; IFG, impaired fasting glucose; IGT, impaired glucose tolerance. |