![iStock_000002259334XSmall braces on teeth](https://www.nationalelfservice.net/cms/wp-content/uploads/2011/06/iStock_000002259334XSmall-braces-on-teeth-150x150.jpg)
This review of in-vitro studies included 9 studies and found photo-curing time, force location, bracket area, and crosshead speed of the testing machine affected sheer bond strength. Use of adhesive resin primer did not affect bond strength.
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