In 1992, after graduating from Istanbul University Faculty of Dentistry, he worked in different polyclinics and established his own practice with Dt. Mehmet Bekir Er and served for more than 10 years. In 2010, she served as the founder of Dent Akdeniz Şifa clinic. With more than 30 years of experience, Dr. Betül Er is well versed and experienced in smile design in prosthesis treatment and aesthetic filling treatments.

Dt.Betül Er has also participated in implant and implant prosthesis symposiums in many places such as Sevl, Chicago, Antalya and Bali both at home and abroad. She speaks English. She has participated in voluntary dental screening and treatments in Syria and tent cities abroad and at home.