Introduction:-The concept of anchorage is very important in orthodontic treatment outcome and best anchorage is provided by miniscrews.This study focuses on the evaluation of success and failure rate of mini screws used for absolute anchorage. The method of placement and technique is also stated and bone density level, position of roots, anatomic landmarks such as maxillary sinus is also explained. The histologic pattern of gingiva is an important consideration in placing miniscrews,when placed in attached gingiva.
Material & Method:-The span of study is 24 months with sample size of 195 mini screws placed between age group of 20-45 years in different sites of maxilla such as in the Attached and Unattached Gingiva on the Buccal and Anterior region of maxillary alveolar process, median and Paramedian region of palate with recall period of 1- 3 month, 3- 6 month and more than 6 months was followed.
Result:-The overall success rate of mini-screw rate in Attached and Unattached gingiva was highest 90% and 70% between 1st Premolar and 2nd Premolar region region with failure rate of 0 % after 1 year follow up. Whereas in palatal region the paramedian region showed good success rate of mini screw of 80% in between first and second premolar region which is better than midpalatal region.
Conclusion:-Thus this study overall concludes that miniscrews are an efficient way of providing anchorage with good success rate when placed in attached gingiva.