Dental Buccal coil spring used to regain space between 1st premolar and 1st molar causes following common post treatment complication: A Pain B Gingival irritation C Tendency of 1st premolar to rotate D Tendency of 1st premolar to intrude 💡 Explanation Buccal coil spring used to regain space between 1st premolar and 1st molar causes following common post treatment complication: ✓ Correct Answer: C. Tendency of 1st premolar to rotate