John J Warren1, Steven M Levy2, Yinghui Xu3, Jeanette M Daly4, George J Eckert5, Dennis Clements6, Anderson T Hara7, Richard Jackson8, Barry P Katz9, Martha Ann Keels10, Barcey T Levy11, Margherita Fontana12. 1. Dr. Warren is a professor and graduate program director, Department of Preventive and Community Dentistry, College of Dentistry, University of Iowa, Iowa City, Iowa, USA;, Email: john-warren@uiowa.edu. 2. Dr. Levy is a Wright-Bush-Shreves endowed professor of Research, Department of Preventive and Community Dentistry, College of Dentistry, University of Iowa, Iowa City, Iowa, USA. 3. Ms. Xu is biostatistics manager, University of Iowa, Iowa City, Iowa, USA. 4. Dr. Daly is a research scientist, Department of Family Medicine, Carver College of Medicine, University of Iowa, Iowa City, Iowa, USA. 5. Mr. Eckert is a biostatistician supervisor, Department of Biostatistics and Health Data Science, School of Medicine and Richard M. Fairbanks School of Public Health, Indiana University, Indianapolis, Ind., USA. 6. Dr. Clements is a emeritus professor, Global Health, Duke University, Durham, N.C., USA. 7. Dr. Hara is a professor, Indiana University, Indianapolis, Ind., USA. 8. Dr. Jackson is an adjunct associate professor, Department of Cariology, Operative Dentistry, and Dental Public Health, School of Dentistry, Indiana University, Indianapolis, Ind., USA. 9. Dr. Katz is professor emeritus in the Department of Biostatistics & Health Data Sciences, School of Medicine, Indiana University, Indianapolis, Ind., USA. 10. Dr. Keels is an adjunct associate professor, Department of Pediatrics, School of Medicine, Duke University, Durham, N.C., USA. 11. Dr. B. Levy is a professor of Family Medicine, Carver College of Medicine and Professor of Epidemiology, College of Public Health, University of Iowa, Iowa City, Iowa, USA. 12. Dr. Fontana is the Clifford Nelson Endowed Professor of Dentistry, Department of Cariology, Restorative Sciences and Endodontics, School of Dentistry, University of Michigan, Ann Arbor, Mich., USA.
Abstract
Purpose: The purpose of this study was to assess the relationship between the number of teeth present at 12 months and decayed, missing, or filled surfaces (dmfs) at 30 and 48 months. Methods: Data are from a longitudinal, multisite study with clinical dental examinations conducted at 12, 30, and 48 months of age. Spearman correlation and chi-square tests assessed relationships between teeth present at 12 months and dmfs at 30 (n equals 1,062) and 48 months (n equals 985). Results: Spearman correlations were weak but significant for both 30- and 48-month time points (R equals 0.066, P=0.032; R equals 0.093, P=0.004, respectively). Mantel-Haenszel chi-square analyses of categories of teeth present at 12 months (zero, one to four, five to eight, and greater than or equal to nine) and categories of dmfs at 30 and 48 months (zero, one to two, three to five, six to 15, and greater than or equal to 16) revealed nonsignificant (P=0.326) relationship with 30-month dmfs but a significant (P=0.013) relationship with 48-month dmfs. Conclusion: Results suggest that early tooth eruption is weakly associated with an occurrence of early childhood caries.
Purpose: The purpose of this study was to assess the relationship between the number of teeth present at 12 months and decayed, missing, or filled surfaces (dmfs) at 30 and 48 months. Methods: Data are from a longitudinal, multisite study with clinical dental examinations conducted at 12, 30, and 48 months of age. Spearman correlation and chi-square tests assessed relationships between teeth present at 12 months and dmfs at 30 (n equals 1,062) and 48 months (n equals 985). Results: Spearman correlations were weak but significant for both 30- and 48-month time points (R equals 0.066, P=0.032; R equals 0.093, P=0.004, respectively). Mantel-Haenszel chi-square analyses of categories of teeth present at 12 months (zero, one to four, five to eight, and greater than or equal to nine) and categories of dmfs at 30 and 48 months (zero, one to two, three to five, six to 15, and greater than or equal to 16) revealed nonsignificant (P=0.326) relationship with 30-month dmfs but a significant (P=0.013) relationship with 48-month dmfs. Conclusion: Results suggest that early tooth eruption is weakly associated with an occurrence of early childhood caries.
Authors: Bruce A Dye; Sylvia Tan; Vincent Smith; Brenda G Lewis; Laurie K Barker; Gina Thornton-Evans; Paul I Eke; Eugenio D Beltrán-Aguilar; Alice M Horowitz; Chien-Hsun Li Journal: Vital Health Stat 11 Date: 2007-04