Core Research Area

The University of Iowa College of Dentistry is a worldwide leader in the genetics of craniofacial and dental development.

Craniofacial anomalies are among the most common forms of birth defects. The goal of this research group is to identify both genetic and environmental causes for facial birth defects, with a primary focus on orofacial clefting, including cleft lip and cleft palate. Our center builds upon a 40-year history of clinical and research studies on craniofacial anomalies at The University of Iowa and continues the tradition established over the past decade of interdisciplinary and inter-institutional research. The research includes not only a broad-based internal constituency but collaborative projects and interactions with colleagues in the United States and overseas. These projects offer access to novel populations and innovative techniques. A variety of approaches are utilized, including genetic and epidemiologic studies of human populations, and the development of animal models that are characterized through molecular biological and biochemical analyses, in addition to a variety of sophisticated imaging techniques.

The division is comprised of the following individuals:

Brad Amendt headshot

Brad Amendt

PhD, Professor

Azeez Butali

Azeez Butali

PhD, Professor

Aline Petrin

Aline Petrin

PhD, Assistant Professor

Huojun Cao

Jun Cao

PhD, Associate Professor

Eric Van Otterloo

Eric Van Otterloo

PhD, Assistant Professor

Headshot of Dr. Lina Moreno

Lina Moreno

PhD, DEO

Updates

Azeez Butali as the keynote speaker at the 2023 Iowa AADOCR

Dr. Azeez Butali awarded prestigious Fulbright to advance human genetics research in Nigeria

Wednesday, June 25, 2025
Dr. Azeez Butali, professor of oral pathology, radiology, and medicine in the UI College of Dentistry, has been awarded a Fulbright to further his groundbreaking work in human genetics.
Azeez Butali

Butali awarded Honoris Causa Award from National Postgraduate Medical College of Nigeria

Wednesday, June 18, 2025
Dr. Azeez Butali was awarded the Honoris Causa Award from the National Postgraduate Medical College of Nigeria. This prestigious award recognizes medical specialists who have demonstrated exceptional excellence clinical care and training.
Brad Amendt headshot

Unlocking the Secrets of Oral Tissue Regeneration: The Role of IRX1 in Wound Healing

Thursday, June 12, 2025
Brad Amendt’s lab received an NIH R56 grant with total costs $480,840 for 1 year to investigate the role of the IRX1 gene in the regulation of oral tissue repair and maintenance.
Emma Square Headshot

University of Iowa Department of Orthodontics Joins the AAOF Legacy Collection Project

Monday, March 24, 2025
The University of Iowa Orthodontics Department, led by Dr. Emma Mueldener, has received a $20,000 grant to digitize the Iowa Growth Study collection for the AAOF Legacy Project. This initiative preserves decades of orthodontic research—including X-rays, dental casts, and measurements—making them globally accessible. The project, set for completion in 2027, will advance education, research, and patient care worldwide.
Mary Young with her mentor Azeez Butali

Spearheading an International Network of Cleft Lip and Palate Research for African Populations

Thursday, January 18, 2024
Azeez Butali is a global leader in cleft lip and palate research and the world’s foremost expert in the genetics of these conditions in African populations. As part of his research mission, he has also spearheaded the formation of a diverse, international network of researchers in Africa and the US to develop, refine, and apply their findings for the benefit of African populations and their genetic descendants. 
Rachel Shrode

NIH Awards Fitzjerrells Training Grant to Investigate Relationship Between Oral Microbiome and Multiple Sclerosis

Thursday, November 16, 2023
Rachel Fitzjerrells a T90 trainee in the Iowa Institute of Oral Health Research and a PhD student in Bioinformatics and Computational Biology, was awarded an F31 grant.
Aline Petrin

Research grant awarded to orthodontics faculty extending research on the epigenetic causes of orofacial clefting

Thursday, August 24, 2023
Aline Petrin’s research on identical twins has shed led on the epigenetic causes of orofacial clefting. Her new study explores the epigenetic causes of mirrored clefting among twins.
Azeez Butali

NIH awards supplemental grant to dental faculty member

Thursday, August 24, 2023
Azeez Butali is extending his research on the genetics of orofacial clefts in African populations so that his team improve the reception and acceptance of genetic information found in their studies.