https://www.selleckchem.com/products/sb297006.html The study aimed to investigate the effects of micro-osteoperforations (MOPs) on the mandibular bone volume/tissue volume (BV/TV) ratio changes and the rate of orthodontic tooth movement using cone-beam computed tomography images. Another objective was to evaluate the effects of MOP frequency intervals (4weeks, 8weeks, and 12weeks) on the BV/TV ratio and rate of tooth movement. In 24 participants, 140-200g of force was applied for mandibular canine retraction. Three MOPs were made according to the scheduled intervals of the 3 different groups group 1 (MOP 4weeks), group 2 (MOP 8weeks), and group 3 (MOP 12weeks) directly at the mandibular buccal cortical bone of extracted first premolars sites. Cone-beam computed tomography scans were obtained at the 12th week after MOP application. Computed tomography Analyzer software (version 1.11.0.0; Skyscan, Kontich, Belgium) was used to compute the trabecular alveolar BV/TV ratio. A significant difference was observed in the rate of canine movement between control and MOP. Paired t test analysis showed a significant difference (P=0.001) in the mean BV/TV ratio between control and MOP sides in all the frequency intervals groups. However, the difference was significant only in group 1 (P=0.014). A strong negative correlation (r=-0.86) was observed between the rate of canine tooth movement and the BV/TV ratio at the MOP side for group 1 and all frequency intervals together (r=-0.42). The rate of orthodontic tooth movement can be accelerated by the MOP technique with frequently repeated MOPs throughout the treatment. The rate of orthodontic tooth movement can be accelerated by the MOP technique with frequently repeated MOPs throughout the treatment. Physical examination for peritonsillar abscess (PTA) has limited sensitivity. Traditional management involves blind needle aspiration, which has a false negative rate of 10-24%. A randomized controlled trial by Costantino etal. demonstr