Measurement of the millimeter markings of periodontal probes

All periodontal probes used by five periodontists were collected and their millimeter markings were measured for accuracy. It was found that most probes were not precise, especially those manufactured by Hu-Friedy more than 3 years ago. However, new probes manufactured by Hu-Friedy were shown to be more accurate. It is recommended ttht dentists use periodontal probes with accurate and consistent markings.