If you brush your teeth gently then no toothbrushes can cause any harm. You can use electric toothbrush.
You can refer to the blog in the link below for oral hygiene measures.
Next Steps
Visit dentist for ultrasonic scaling every 6 months.
Health Tips
"10 Dental Commandments for Happy Teeth!" by Dr.Rashmi Bamane - https://www.practo.com/healthfeed/10-dental-commandments-for-happy-teeth-40426/post