Dr McLean graduated from the University of Wales College of Medicine Dental School in 1997. During his undergraduate years he was awarded a Bachelor of Science (Hons) Degree in Dental Science. In 1998, he was awarded an Action Research Training Fellowship to pursue his PhD.
The following four years were spent at Harvard Medical School Department of Cell Biology, investigating craniofacial and skeletal development. In 2002, he returned from the United States to take up a position as a lecturer at Manchester University in the School of Biological Sciences where he continued his studies on craniofacial development. In 2004, Dr McLean returned to full-time clinical practice and achieved a Postgraduate Diploma in Endodontology from the University of Chester.
Dr McLean divides his time between private practice at Vermilion where he treats patients referred for endodontics (root canal treatment) with his role as a Senior Clinical University Teacher at University of Glasgow Dental School where he delivers clinical teaching in restorative dentistry and endodontics.
He is a founder member of the Scottish Endodontic Study Group (SESG) which aims to provide educational and professional development needs in the speciality field of endodontology. His current research interests lie in the field of endodontics, utilising high resolution imaging modalities to investigate the efficacy of novel obturation systems.