Dental Sleep Medicine - Faculty

Dr. Gerstner is Director of the Mini-Residency. He holds a BS in Zoology and did an MS while simultaneously obtaining a DDS degree at UCLA. He subsequently pursued graduate training through an individual NIH Dentist Scientist Award. He studied Orofacial Pain management at the UCLA School of Dentistry and obtained a PhD in Neuroscience through the UCLA School of Medicine. His graduate work won the AADR Hatton Award.
Dr. Gerstner has been faculty at the University of Michigan School of Dentistry since 1992, where he has taught pre-doctoral and post-doctoral clinical, pre-clinical, and didactic courses in dental sleep medicine, occlusion, orofacial pain, temporomandibular disorders, sleep bruxism, and the neurobiology of chewing, swallowing, breathing, and speech. He has won many teaching awards, including Dean’s Teacher of the Year.
Dr. Gerstner has mentored 160 undergraduate students, 66 graduate students and 5 post-doctoral research investigators. Dr. Gerstner's current research focuses on the motor control of chewing, and on clinical studies related to obstructive sleep apnea. He is funded by the AADSM to study the validity of over-the-counter consumer products marketed for use in home obstructive sleep apnea screening and assessment.
Dr. Gerstner is Director of the Sleep Apnea Clinic at the University of Michigan School of Dentistry. His practice is limited to treating obstructive sleep apnea and is located in Graduate Prosthodontics and in Hospital Dentistry. He holds DDS licenses in Michigan and California.

Dr. Wei is the co-director of the Mini-Residency and a prosthodontist with a diverse background in dental medicine, oral biology, and biomaterials. She earned her dental degree and completed her advanced postdoctoral training in restorative dentistry in China before pursuing a PhD in oral biology and dental biomaterials at the University of Hong Kong. Her research is focused on bio-integration, tissues regeneration, and the management of infections associated with dental implants, dental ceramics, and dental fillings.
Her work in these areas has earned her multiple awards from the International Association for Dental Research (IADR). Dr. Wei's expertise was further honed with the completion of a graduate degree in prosthodontics at the University of Michigan, after which she joined the faculty as a Clinical Assistant Professor and co-director of the pre-doctoral implant program. She also completed dental sleep medicine training from AADSM and her current research interests involve developing and optimizing oral appliances for the management of obstructive sleep apnea, with a particular focus on improving patient comfort, compliance, and therapeutic outcomes.

Dr. Kaplish is Clinical Associate Professor of Neurology and Sleep Medicine. He is the Director of the Sleep Medicine ACU and Michigan Medicine Sleep Disorders Laboratories with Board Certification in Neurology, Sleep Medicine and Clinical Neurophysiology. He is currently or in past has held leadership positions within Michigan Medicine, in the state of Michigan and nationally.
Dr. Kaplish did his neurology residency at University of Toledo Medical Center and did fellowships in clinical neurophysiology and sleep medicine at the University of Michigan. He has been a faculty member of the University of Michigan Sleep Disorders Center and Center for Sleep Science for 15 years. His interests include developing novel methods of treating obstructive sleep apnea in patients who are unable to tolerate CPAP therapy. He has published and researches the impact of sleep disorders in neurological conditions. He collaborates with stakeholders within Michigan Medicine and Beyond to enhance and improve access to clinical services for patients with sleep disorders. Dr. Kaplish is interested in teaching various aspects of chronic sleep disorders and the interface of neurologic diseases and sleep disorders.

Dr. Hatfield is the Director of the University of Michigan Orofacial Pain and TMD residency and specialty program. She earned her Doctor of Dental Surgery (DDS) from the University of Michigan in 2017 and completed the general practice residency (GPR) at Michigan Medicine in 2018. Following this, she was the first person to complete the TMD & Orofacial Pain Residency at Michigan Medicine in 2020 and is currently a Diplomate of the American Board of Orofacial Pain.
After residency, Dr. Hatfield joined the University of Michigan as a faculty member in Hospital Dentistry and TMD & Orofacial Pain. In 2022 she became the program director for the TMD & Orofacial Pain Residency. Her clinical interests are in TMD & Orofacial Pain diagnosis and management, including temporomandibular joint disorders, headaches, and neuropathic pain disorders. She is expressly interested in furthering undergraduate and graduate education in this clinical area. Dr. Hatfield’s research interests are in innovative management strategies for orofacial pain disorders and inter-professional education and collaboration.

Dr. Hassan is Clinical Professor with specialty training in Pediatric Pulmonology, Sleep Medicine, and Pediatrics. She did her pediatric residency at Texas Tech Health Science Center and her fellowship in pediatric pulmonology at the University of Michigan. She is the Director of Refractory Sleep Apnea clinic at the University of Michigan as well as the Co-director of the Pediatric Home Ventilator Program and the Spinal Muscular Atrophy Clinic at the University of Michigan.
Her area of practice is in Pulmonary and Sleep Medicine, including sleep apnea (both central and obstructive) as well as hypoventilation in children and the use of non-invasive ventilation in children. She is also interested in sleep disorders in children in relation to chronic diseases such as asthma and cystic fibrosis and the relationship between obesity and sleep.

Dr. Berna Saglik received her DDS degree from Marmara University in Istanbul, Turkey, and MS in prosthodontics from the University of Michigan School of Dentistry. Upon graduation she started working as a full time faculty member. She is currently teaching in the graduate prosthodontics clinic as well as directing Removable Partial Denture course for sophomore dental students.
She is also the Director of Dental Postgraduate Program in Prosthodontics. Dr.Saglik has received numerous teaching awards including Dr.Paul Gibbons award, and ADEA/ADEA Council of Students, Residents and Fellows Junior Faculty award . She's an alumni of ADEA Leadership Institute, Class of 2013. Dr. Saglik is a fellow of the American College of Prosthodontists, American Dental Education Association and a fellow of the International College of Oral Implantologists. Dr. Saglik is a diplomate of American Board of Dental Sleep Medicine and American Board of Prosthodontics. She is a published author with publications in peer-reviewed journals in the area of advanced prosthodontics procedures and dental implants. She maintains an intramural faculty practice limited to Prosthodontics.

Earl K Bogrow DDS is a 1979 graduate of the U-M School of Dentistry and 1975 undergraduate B.S from University of Michigan. He has had a private general dentistry practice in Southfield, Mich., since 1981. Currently, he dedicates his private practice to Dental Sleep Medicine in the treatment of Obstructive Sleep Apnea and Snoring with Oral Appliance Therapy. He has also trained as a Buteyko breathing method clinical certified instructor.
Dr. Bogrow is a Fellow of the Academy of General Dentistry ( since 2005), and a Diplomate of the American Board of Dental Sleep Medicine (since 2012). He is currently an Adjunct Clinical Assistant Professor in both the Department of Biologic and Materials Sciences and Prosthodontics and the Department of Cariology, Restorative Sciences and Endodontics, along with being a Dental Sleep Medicine consultant at the University of Michigan School of Dentistry. He was an invited speaker and participant in the University of Michigan SOD Pathways program (2017-2020). From 1979 to 1981 Earl worked for the State of Hawaii Public Dental Health Department. He is currently licensed with the State of Michigan and Hawaii state Boards of Dentistry.

Dr. Regina Mackiewicz-Dailey is an accomplished dental professional with over three decades of experience. She is an Adjunct Clinical Assistant Professor in Cariology Restorative Sciences and Endodontics, and Biologic and Materials Sciences and Prosthodontics. She has been a Diplomate of the American Board of Dental Sleep Medicine since 2008.
Dr. Mackiewicz-Dailey obtained her DMD degree from the University of Medicine and Dentistry of New Jersey in 1986, summa cum laude. She then served as a pre-clinical instructor in Prosthodontics at the University of Detroit Dental School from 1986 to 1989. Since 1989, Dr. Mackiewicz-Dailey has been in private practice in Ann Arbor. For the past 20 years, her practice has included treating patients with snoring and obstructive sleep apnea which was inspired by the mentorship of Dr. Johnathan Parker. Her practice focus is to integrate oral health, wellness, restful sleep, and beautiful smiles. Dr. Mackiewicz-Dailey is a member of several professional organizations, including the American Dental Association (life member), Michigan Dental Association, Washtenaw District Dental Society (past president), American Academy of Dental Sleep Medicine, Michigan Academy of Sleep Medicine, the National Dental Honors Society (Omicron Kappa Upsilon), and Chicago Dental Society. She is passionate about sharing her knowledge and experience to assist other dentists in providing better care for their patients.

Dr. Sieu Yien (Ashley) Chiam earned her Doctor of Dental Surgery degree from National Yang-Ming University in Taipei, Taiwan, in 2016. Following her graduation, she further developed her skills through postdoctoral training in a hospital setting and years of dedicated private practice. Fueled by her passion for elevating patient care and her unwavering pursuit of knowledge, she enhanced her expertise by undertaking Graduate Prosthodontics training at the University of Washington from 2020 to 2023.
Throughout these years, in addition to her clinical practice and teaching activities, she dedicated herself to exploring dental materials research, which led to recognition through grants and awards from esteemed institutions, including the American College of Prosthodontics, American Prosthodontics Society, and The Academy of Dental Materials. Upon completing her residency, Dr. Chiam was acknowledged by the University of Michigan, where she assumed the role of Clinical Assistant Professor.

Dr. Sung earned her DDS degree from the School of Dentistry, University of Chile in Santiago where she also completed her Oral and Maxillofacial Surgical Residency and a Master's Degree in Biological Science. She has received advanced training in dental implantology and specialized in oral maxillofacial trauma. Clinical Specialization: Dr. Sung's clinical interests include trauma, pathology, regenerative medicine and dentoalveolar surgeries.

Dr. John Bisognano is a Clinical Professor of Internal Medicine and Interim Chief of the Division of Cardiovascular Medicine. Dr. Bisognano earned his bachelor's degree from MIT, his MA in chemistry and PhD in physical chemistry from SUNY-Binghamton University, and his MD from SUNY-Upstate Medical College. Dr. Bisognano completed his internal medicine residency at the University of Michigan where his interest in cardiology and hypertension was ignited by Dr. Stevo Julius. After completing a fellowship in hypertension, Dr. Bisognano moved to Colorado to complete a fellowship in cardiology and advanced heart failure and transplant at the University of Colorado.
Dr. Bisognano returned to the University of Michigan where he was an Assistant Professor of Internal Medicine for several years before joining the new heart transplant team at the University of Rochester in 2001. While there, he served in numerous leadership roles, including Director of Cardiac Rehabilitation, Medical Director of the University’s Accountable Care organization, and Director of Outpatient Cardiology. In 2021, Dr. Bisognano returned to the University of Michigan and joined faculty in the Division of Cardiovascular Medicine as a clinical professor. He was named the division's interim chief in 2023.
Dr. Bisognano sees patients on the inpatient cardiology services, the inpatient consultative service, and in outpatient clinics. His area of specialty includes general cardiology, as well as severe and resistant hypertension, lipid management, and management of patients with chronic heart failure and ischemic coronary and vascular disease.
A significant part of Dr. Bisognano’s career has been dedicated to general cardiology. He has a longstanding interest in severe and refractory hypertension including device-based therapies for hypertension and is the author of more than 115 journal articles, three books, and numerous book chapters. Dr. Bisognano has served as PI on an NIH R01 grant related to behavioral interventions in people with mild hypertension. He currently serves as co-investigator on an NIH R61/R33 grant for community-based interventions in hypertension.
Dr. Bisognano has served as President of the American Society of Hypertension, Vice-Chair of the American Heart Association Council on High Blood Pressure, Upstate New York State Governor of the American College of Cardiology, and President of the New York Cardiovascular Society.
Dr. Bisognano has been recognized with numerous honors and awards including the University of Rochester Kuhn Teaching Fellowship for Outstanding Medical Student Teaching, the University of Rochester Medical Center Board Excellence Award, and the American Heart Association Arthur J. Moss Award.