Developmental arrest of tooth bud after correction of mandibular fracture.
A case of multiple fractures of the mandible following a car accident in a five-year-old patient is reported. The fracture line passed distal to the first molar tooth bud. The fracture was treated by wire osteosynthesis and skeletal fixation. During the ensuing 18 months, a gradual arrest of the development of the first molar tooth bud was radiologically observed. The eruption process had not been disturbed, and the tooth erupted at the age of 6 1/2 years. Since the distal root had completely failed to develop and the mesial roots showed a diminished size, the tooth was extracted. Histopathological examination revealed disturbed dentin apposition, there was almost complete obliteration of the pulp chamber by globular dentin, and evidence of root resorption.
Calderon
S
S
Department of Oral & Maxillofacial Surgery, Beilinson Medical Center, Tel-Aviv University, Sackler School of Dentistry, Petah-Tiqua, Israel.
Kaplan
I
I
Gal
G
G
D002675:Child, Preschool; D003804:Dentin / Q000254:growth & development / Q000503:physiopathology; D005593:Fracture Fixation, Internal / Q000009:adverse effects*; D006801:Humans; D008297:Male; D008337:Mandibular Fractures / Q000150:complications* / Q000601:surgery*; D008963:Molar / Q000254:growth & development / Q000503:physiopathology; D012391:Root Resorption / Q000209:etiology; D014078:Tooth Eruption; D014083:Tooth Germ / Q000254:growth & development / Q000293:injuries*; D014092:Tooth Root / Q000503:physiopathology