In-vitro and in-vivo assessment of the Periotest M device as a means of measuring temporary anchorage device stability

IntroductionTemporary anchorage devices (TADs), commonly referred to as orthodontic miniscrews, are utilized in treatment as a source of anchorage to support orthodontic tooth movement. They provide a stable point of skeletal anchorage, allowing for precise tooth movement without relying on other teeth for support. This can be especially beneficial when lack of patient compliance with traditional methods, such as headgear or elastics, causes treatment to be less effective or impractical. Despite their utility, the failure of TADs due to excessive mobility is common and interrupts orthodontic treatment intervention. The aims of this study are to establish a protocol by which TAD stability can be measured via the Periotest M device, to investigate the validity of such data, and to begin gathering clinical data related to TAD mobility at the time of placement and at subsequent follow-up visits.