Hi.. Scaling uses Ultrasonic vibration and has Absolutely no harm on tooth structure, enamel, dentin or cementum.. It's frequency of vibration causes dislodgement of calculus ( dirt stuck on teeth over a long period ) only!
Any dentist recommends scaling every 6 months to keep ur teeth and therefore ur gums healthy! Please go ahead and confidently get ur tooth cleaned at least once a year
Health Tips
Enamel is the hardest substance in the body... even if it was ten times weaker , still scaling can do no harm to it! Cheers!