Unraveling the Molecular Mechanisms That Lead to Supernumerary Teeth in Mice and Men: Current Concepts and Novel ApproachesD’Souza R.N. · Klein O.D.
aDepartment of Biomedical Sciences, Baylor College of Dentistry, Texas A&M University Health Science Center, Dallas, Tex., and bDepartment of Pediatrics, University of California, San Francisco, Calif., USA
Supernumerary teeth are defined as those that are present in excess of the normal complement of human dentition and represent a unique developmental anomaly of patterning and morphogenesis. Despite the wealth of information generated from studies on normal tooth development, the genetic etiology and molecular mechanisms that lead to congenital deviations in tooth number are poorly understood. For developmental biologists, the phenomenon of supernumerary teeth raises interesting questions about the development and fate of the dental lamina. For cell and molecular biologists, the anomaly of supernumerary teeth inspires several questions about the actions and interactions of transcription factors and growth factors that coordinate morphogenesis, cell survival and programmed cell death. For human geneticists, the condition as it presents itself in either syndromic or non-syndromic forms offers an opportunity to discover mutations in known or novel genes. For clinicians faced with treating the dental complications that arise from the presence of supernumerary teeth, knowledge about the basic mechanisms involved is essential. The purpose of this manuscript is to review current knowledge about how supernumerary teeth form, the molecular insights gained through studies on mice that are deficient in certain tooth signaling molecules and the questions that require further research in the field.
Dr. Rena N. D’Souza
Department of Biomedical Sciences, Baylor College of Dentistry
Texas A&M University System, Health Science Center, 3302 Gaston Avenue
Dallas, TX 75246 (USA)
Tel. +1 214 828 8260, Fax +1 214 828 8375, E-Mail firstname.lastname@example.org
Number of Print Pages : 10
Number of Figures : 4, Number of Tables : 0, Number of References : 61
Cells Tissues Organs (in vivo, in vitro)
Vol. 186, No. 1, Year 2007 (Cover Date: July 2007)
Journal Editor: Denker, H.-W. (Essen)
ISSN: 1422–6405 (print), 1422–6421 (Online)
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