Purpose: Periodontally accelerated osteogenic orthodontics (PAOO) is a relatively new clinical procedure that combines selective alveolar corticotomy, particulate bone grafting and application of orthodontic force. The purpose of this study was to evaluate treatment time, alveolar bone quality and post-treatment stability of pre-surgical orthodontics in skeletal class III malocclusion patients treated with PAOO technique.
Materials and methods: 10 patients (4 male and 6 female, average age is 21.6 years) with skeletal class III malocclusion were examined with cone-beam CT prior to treatment. PAOO was performed as the pre-surgical assisted orthodontics procedure. Full thickness mucoperiosteal flap was used to access the alveolar bone surface and preserve the dental papillae. Corticotomies was carried on labial aspect of the alveolar bone. A vertical groove was placed in the midway between the root prominences, from the point 2–3 mm below the alveolar crest to the point 5 mm beyond the apices of the roots. A horizontal corticotomy were then connected all the vertical cuts. Particulate grafting was done with bio-oss in areas that have undergone corticotomies and bio-guide membrane was used to cover the bone graft. Orthodontic force was activated 2 weeks after PAOO procedure and post-treatment bone-beam CT scans were taken at the end of the orthodontic treatment.
Results: The mean treatment time of pre-surgical orthodontics was 3–6 months shorter and labial alveolar bone thickness of lower anterior teeth was increased 2–3 mm by PAOO.
Conclusions: PAOO technique has obvious advantages of shorter treatment time, provides greater alveolar volume and reduces root resorption.
Conflict of interest: None declared.