John Sanghyun Lee

When the molar throbs and the over-the-counter gel stops working, an endodontist becomes the next logical stop. These specialists handle the inner workings of teeth—root canals, cracked molars, and the occasional emergency that general dentists refer out. John Sanghyun Lee operates in this precise corner of dental care, tucked into a second-floor suite at 600 S Denton Tap Rd STE 200 in Coppell, a suburb that feels more like a quiet extension of DFW than a standalone town.

Coppell’s office parks blend seamlessly with the residential streets, and the building at Denton Tap and Sandy Lake is no exception. The practice focuses on procedures that most patients hope to avoid—retreatments, apicoectomies, and the standard root canal—but the specialty itself is routine enough to keep the referral stream steady. No frills, just the mechanics of saving teeth before extraction becomes the only option. The phone rings at (972) 471-0647 when the referral pad comes out or the pain flares after hours.

Directions are straightforward: exit the freeway, follow the retail sprawl, and turn into the lot shared with a bank and a smoothie chain. A map pin drops here: find the suite on Google Maps.