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Macrodontia Associated with Mandibular Distraction Osteogenesis

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Infants diagnosed with Pierre Robin sequence frequently have airway obstruction. In severe cases of obstruction, mandibular distraction osteogenesis (MDO) can alleviate the airway blockage through elongation of the mandible and subsequent anterior placement of the tongue. However, there are several complications associated with MDO in the very young child. Among those are injuries to teeth that develop in the area of the MDO osteotomies. Such injuries include distalization and/or morphologic anomalies of primary and permanent molars. We describe a case of an unusual macrodontia of the primary mandibular left second molar in a six-year-old male who underwent MDO as an infant. We believe that the mesial-distal elongation of the crown of the primary second molar occurred through distraction histogenesis of the tooth structures during the distraction of the mandible. We discuss the importance of preoperative planning to minimize such damages to the developing dentition.
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Keywords: MACRODONTIA; MANDIBULAR DISTRACTION OSTEOGENESIS; PEDIATRIC DENTISTRY; PIERRE ROBIN SEQUENCE

Document Type: Case Report

Affiliations: 1: Dr. Herring is a pediatric dentist in private practice, Cary and Cameron, N.C., USA 2: Dr. Lee is a resident, Pediatric Dentistry Division, Department of Preventive and Restorative Sciences, School of Dental Medicine, University of Pennsylvania, Philadelphia, Pa., USA 3: Dr. Taylor is Peter Randall Endowed Chair of Plastic Surgery and chief, Division of Plastic and Reconstructive Surgery, Department of Surgery; and co-director, Cleft Lip and Palate Program and the Craniofacial Program, Children's Hospital of Philadelphia, Philadelphia, Pa., USA 4: Dr. Hajishengallis is a professor, graduate program director and chief, Pediatric Dentistry Division, Department of Preventive and Restorative Sciences, School of Dental Medicine, University of Pennsylvania, Philadelphia, Pa., USA;, Email: [email protected]

Publication date: January 1, 2020

More about this publication?
  • Acquired after the merger between the American Society of Dentistry for Children and the American Academy of Pediatric Dentistry in 2002, the Journal of Dentistry for Children (JDC) is an internationally renowned journal whose publishing dates back to 1934. Published three times a year, JDC promotes the practice, education and research specifically related to the specialty of pediatric dentistry. It covers a wide range of topics related to the clinical care of children, from clinical techniques of daily importance to the practitioner, to studies on child behavior and growth and development. JDC also provides information on the physical, psychological and emotional conditions of children as they relate to and affect their dental health.
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