Dr. Warren joined the University of Iowa College of Dentistry as a postdoctoral associate in 1991. He became an adjunct assistant professor in the Department of Preventive & Community Dentistry in 1996. In 1999, he became a full-time assistant professor in the department; he is now a professor. In 2010, Dr. Warren became director of the graduate program in dental public health.
Dr. Warren teaches both predoctoral and graduate classes. His main predoctoral responsibilities include clinical preventive dentistry, but he also participates in the community dentistry courses. His graduate responsibilities include directing a course in thesis research design as well as participating in several other courses. He is also graduate program director for dental public health.
Dr. Warren's clinical activities include teaching in the predoctoral preventive dentistry clinics and various clinical research projects.
Dr. Warren's current research includes several studies of factors related to dental caries in early childhood and the prevention of this disease; longitudinal sucking patterns and dental arch development; and longitudinal study of fluoride exposures and dental fluorosis. Dr. Warren is also the director of the College of Dentistry's student research program.
1: Lynch DJ, Villhauer AL, Warren JJ, Marshall TA, Dawson DV, Blanchette DR, Phipps KR, Starr DE, Drake DR. Genotypic characterization of initial acquisition of Streptococcus mutans in American Indian children. J Oral Microbiol. 2015 Apr 1;7:27182. doi: 10.3402/jom.v7.27182. eCollection 2015. PubMed PMID: 25840611; PubMed Central PMCID: PMC4385128.
2: Hong L, Levy SM, Warren JJ, Broffitt B. Infant breast-feeding and childhood caries: a nine-year study. Pediatr Dent. 2014 Jul-Aug;36(4):342-7. PubMed PMID: 25198001.
3: Coe JM, Best AM, Warren JJ, McQuistan MR, Kolker JL, Isringhausen KT. Service-learning's impact on dental students' attitude towards community service. Eur J Dent Educ. 2014 Aug 21. doi: 10.1111/eje.12113. PubMed PMID: 25142286; PubMed Central PMCID: PMC4336626.
4: Guzman-Armstrong S, Warren JJ, Cunningham-Ford MA, von Bergmann H, Johnsen DC. Concepts in critical thinking applied to caries risk assessment in dental education. J Dent Educ. 2014 Jun;78(6):914-20. PubMed PMID: 24882777.
5: Levy SM, Warren JJ, Phipps K, Letuchy E, Broffitt B, Eichenberger-Gilmore J, Burns TL, Kavand G, Janz KF, Torner JC, Pauley CA. Effects of life-long fluoride intake on bone measures of adolescents: a prospective cohort study. J Dent Res. 2014 Apr;93(4):353-9. doi: 10.1177/0022034514520708. Epub 2014 Jan 27. PubMed PMID: 24470542; PubMed Central PMCID: PMC3957342.
6: Kateeb ET, Warren JJ, Damiano P, Momany E, Kanellis M, Weber-Gasparoni K, Ansley T. Teaching atraumatic restorative treatment in U.S. dental schools: a survey of predoctoral pediatric dentistry program directors. J Dent Educ. 2013 Oct;77(10):1306-14. PubMed PMID: 24098034.
7: Weber-Gasparoni K, Warren JJ, Reeve J, Drake DR, Kramer KW, Marshall TA, Dawson DV. An effective psychoeducational intervention for early childhood caries prevention: part II. Pediatr Dent. 2013 May-Jun;35(3):247-51. PubMed PMID: 23756309.
8: Weber-Gasparoni K, Reeve J, Ghosheh N, Warren JJ, Drake DR, Kramer KW, Dawson DV. An effective psychoeducational intervention for early childhood caries prevention: part I. Pediatr Dent. 2013 May-Jun;35(3):241-6. PubMed PMID: 23756308.
9: Chankanka O, Levy SM, Marshall TA, Cavanaugh JE, Warren JJ, Broffitt B, Kolker JL. The associations between dietary intakes from 36 to 60 months of age and primary dentition non-cavitated caries and cavitated caries. J Public Health Dent. 2012 Nov 8. doi: 10.1111/j.1752-7325.2012.00376.x. PubMed PMID: 23134446.
10: Warren JJ, Kramer KW, Phipps K, Starr D, Dawson DV, Marshall T, Drake D. Dental caries in a cohort of very young American Indian children. J Public Health Dent. 2012 Fall;72(4):265-8. doi: 10.1111/j.1752-7325.2012.00372.x. Epub 2012 Sep 28. PubMed PMID: 23017107; PubMed Central PMCID: PMC3509261.
11: Valencia A, Damiano P, Qian F, Warren JJ, Weber-Gasparoni K, Jones M. Racial and ethnic disparities in utilization of dental services among children in Iowa: the Latino experience. Am J Public Health. 2012 Dec;102(12):2352-9. doi: 10.2105/AJPH.2011.300471. Epub 2012 Jun 14. PubMed PMID: 22698039; PubMed Central PMCID: PMC3519335.
12: Wang X, Willing MC, Marazita ML, Wendell S, Warren JJ, Broffitt B, Smith B, Busch T, Lidral AC, Levy SM. Genetic and environmental factors associated with dental caries in children: the Iowa Fluoride Study. Caries Res. 2012;46(3):177-84. doi: 10.1159/000337282. Epub 2012 Apr 13. PubMed PMID: 22508493; PubMed Central PMCID: PMC3580152.
13: Weber-Gasparoni K, Goebel BM, Drake DR, Kramer KW, Warren JJ, Reeve J, Dawson DV. Factors associated with mutans streptococci among young WIC-enrolled children. J Public Health Dent. 2012 Fall;72(4):269-78. doi: 10.1111/j.1752-7325.2012.00335.x. Epub 2012 Apr 16. PubMed PMID: 22506597.
14: Kavand G, Broffitt B, Levy SM, Warren JJ. Comparison of dental esthetic perceptions of young adolescents and their parents. J Public Health Dent. 2012 Spring;72(2):164-71. doi: 10.1111/j.1752-7325.2011.00306.x. Epub 2012 Feb 24. PubMed PMID: 22364682; PubMed Central PMCID: PMC3370263.
15: Chankanka O, Cavanaugh JE, Levy SM, Marshall TA, Warren JJ, Broffitt B, Kolker JL. Longitudinal associations between children's dental caries and risk factors. J Public Health Dent. 2011 Fall;71(4):289-300. doi: 10.1111/j.1752-7325.2011.00271.x. Epub 2011 May 31. PubMed PMID: 22320287; PubMed Central PMCID: PMC4353577.
16: Cruz-Orcutt N, Warren JJ, Broffitt B, Levy SM, Weber-Gasparoni K. Examiner reliability of fluorosis scoring: a comparison of photographic and clinical examination findings. J Public Health Dent. 2012 Spring;72(2):172-5. doi: 10.1111/j.1752-7325.2012.00315.x. Epub 2012 Feb 7. PubMed PMID: 22316120; PubMed Central PMCID: PMC3349819.
17: Rankin SJ, Levy SM, Warren JJ, Gilmore JE, Broffitt B. Fluoride content of solid foods impacts daily intake. J Public Health Dent. 2012 Spring;72(2):128-34. doi: 10.1111/j.1752-7325.2011.00292.x. Epub 2011 Nov 9. PubMed PMID: 22315974.
18: Hong L, Levy SM, Warren JJ, Broffitt B. Amoxicillin use during early childhood and fluorosis of later developing tooth zones. J Public Health Dent. 2011 Summer;71(3):229-35. PubMed PMID: 21972463.
19: Chankanka O, Marshall TA, Levy SM, Cavanaugh JE, Warren JJ, Broffitt B, Kolker JL. Mixed dentition cavitated caries incidence and dietary intake frequencies. Pediatr Dent. 2011 May-Jun;33(3):233-40. PubMed PMID: 21703076; PubMed Central PMCID: PMC3690298.
20: Rankin SJ, Levy SM, Warren JJ, Gilmore JE, Broffitt B. Relative validity of an FFQ for assessing dietary fluoride intakes of infants and young children living in Iowa. Public Health Nutr. 2011 Jul;14(7):1229-36. doi: 10.1017/S1368980011000474. Epub 2011 Mar 31. PubMed PMID: 21450138; PubMed Central PMCID: PMC3805960.
21: Guzmán-Armstrong S, Chalmers J, Warren JJ. Ask us. White spot lesions: prevention and treatment. Am J Orthod Dentofacial Orthop. 2010 Dec;138(6):690-6. PubMed PMID: 21171493.
22: Chi DL, Momany ET, Neff J, Jones MP, Warren JJ, Slayton RL, Weber-Gasparoni K, Damiano PC. Impact of chronic condition status and severity on dental utilization for Iowa Medicaid-enrolled children. Med Care. 2011 Feb;49(2):180-92. doi: 10.1097/MLR.0b013e3181f81c16. PubMed PMID: 21150799; PubMed Central PMCID: PMC3095041.
23: Levy SM, Broffitt B, Marshall TA, Eichenberger-Gilmore JM, Warren JJ. Associations between fluorosis of permanent incisors and fluoride intake from infant formula, other dietary sources and dentifrice during early childhood. J Am Dent Assoc. 2010 Oct;141(10):1190-201. PubMed PMID: 20884921.
24: Chi DL, Momany ET, Neff J, Jones MP, Warren JJ, Slayton RL, Weber-Gasparoni K, Damiano PC. Impact of chronic condition status and severity on the time to first dental visit for newly Medicaid-enrolled children in Iowa. Health Serv Res. 2011 Apr;46(2):572-95. doi: 10.1111/j.1475-6773.2010.01172.x. Epub 2010 Sep 17. PubMed PMID: 20849559; PubMed Central PMCID: PMC3008760.
25: Chi DL, Momany ET, Neff J, Jones MP, Warren JJ, Slayton RL, Weber-Gasparoni K, Damiano PC. Impact of chronic condition status and severity on dental treatment under general anesthesia for Medicaid-enrolled children in Iowa state. Paediatr Anaesth. 2010 Sep;20(9):856-65. doi: 10.1111/j.1460-9592.2010.03371.x. PubMed PMID: 20716079; PubMed Central PMCID: PMC3087495.
26: Cannon HM, Broffitt B, Levy SM, Warren JJ. Longitudinal changes in parental satisfaction: mixed dentition esthetics. J Dent Child (Chic). 2010 Sep-Dec;77(3):166-73. PubMed PMID: 22044470.
27: Nair R, Weber-Gasparoni K, Marshall TA, Warren JJ, Levy SM. Factors affecting early childhood caries among WIC-enrolled children in Linn County, Iowa. J Dent Child (Chic). 2010 Sep-Dec;77(3):158-65. PubMed PMID: 22044469.
28: Chankanka O, Levy SM, Warren JJ, Chalmers JM. A literature review of aesthetic perceptions of dental fluorosis and relationships with psychosocial aspects/oral health-related quality of life. Community Dent Oral Epidemiol. 2010 Apr;38(2):97-109. doi: 10.1111/j.1600-0528.2009.00507.x. Epub 2009 Dec 7. Review. PubMed PMID: 20002631.
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Dr. Warren is a calibrated examiner for the Iowa Fluoride Study and he helped develop examination criteria for epidemiological dental caries and dental fluorosis examinations in the primary dentition. Dr. Warren has served as a consultant to several oral health studies in the United State and abroad, and has served on several NIH and international grant review panels. Dr. Warren has been a member of the editorial board for Journal of Public Health Dentistry and currently serves in that capacity for Special Care Dentistry. He is a reviewer for Community Dentistry and Oral Epidemiology, Special Care in Dentistry, Caries Research, Caries Research, and a number of other journals.