Abstract
To compare stability and surrounding soft tissue reaction of self-tapping and drill-free screws placed in maxilla for orthodontic anchorage for retraction of anterior teeth. 10 patients requiring retraction of maxillary anteriors were selected. Titanium screws of both types (1.4mm×6mm) were placed on either side of maxilla for each patient under local anaesthesia. They were checked for stability and adjacent soft tissue reaction clinically and radiographically every month. The drill-free screws were found to be as stable as the self-tapping screws.
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