Private dental clinic of Doctor of Dental Medicine Lidija Crvelin Jelić, who is also a court expert witness, opened her first practice in Zadar in 1986, and in 1993 opened a clinic in Zagreb at Hrgovići 33.

At the end of 2011, Dr. Lidija Crvelin Jelić received the iTOP Master Program certificate, which she implements in her practice. For many years, she has been an excellent mentor to younger colleagues while continuously adopting the latest advancements in modern dentistry herself.