Radiology
Forum
Each month this section will bring to the reader of ORAL SURGERY. ORAL MEDICINE, AND ORAL PATHOLOGY information of practical relevance to the art and science of diagnostic imaging and diagnostic images with unusual interpretive features. Practical notes and radiographs will be accompanied by an explanation or inquiry. Please submit 5 X 7 inch glossy black-and-white prints of your illustrations. All materials for publication should be submitted to Dr. Allan G. Farman, Department of Primary Patient Care, School of Dentistry, University of Louisville, Louisville, KY 40292.
SHORTENED MANDIBLE
A
ROOTS IN THE MAXILLA
AND
21-year-old man reported having sporadic pain to “hot, cold, and sweets” that was localized to the right mandibular molar region and that had begun approximately 1 month before this examination. The patient stated that symptoms were increasing in severity. A routine clinical examination showed soft tissues to be within normal limits; however, there was mild enamel hypoplasia with pitting and deep buccal dental caries of the right mandibular right permanent molar. A panoramic radiograph showed that many teeth had short, blunted roots (Fig. 1). A careful review of the patient’s medical record revealed a history of pseudohypoparathyroidism. Pseudohypoparathyroidism represents a related group of clinical disorders characterized by hypocalcemia, hyperphosphatemia, and target organ resistance to parathyroid hormone. Typically, the disease is a hereditary syndrome of short stature, mental
retardation, and distinct abnormalities of skeletal development. Dental findings include delayed or absent eruption of teeth, thin hypoplastic enamel with pitting, short roots, and large pulp spaceswith pulp stones.‘-3 David A. Cohen, DMD Department of Dentistry Naval Hospital Jacksonville. FL 32214 REFERENCES 1. Ritchie GM. Dental manifestations
of pseudohypoparathq-
roidism. Arch Dis Child 1965;40:565. 2. Croft LK, Witkop CJ Jr, Glas JE. Pseudohypoparathyroidism. ORAL SURC ORAL MED ORAL PATHOL 1965;20:758. 3. Winter GB, Brook AH. Enamel hypoplasia and anomalies ol’ the enamel. In: Poole AE, ed. The Dental Clinics of North America Symposium on Genetics. Philadelphia: WB Saunders Co, 1975:1-3.
1. Panoramic film of patient with pseudohypoparathyroidism. Clinical onset of this condition was thought to occur at around 8 years of age. Note shortened roots throughout the maxillary and mandibular arches.
Fig.
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