Search

The radiographic features of the jaws in the mucopolysaccharidoses and related disorders (MPS) have been reviewed and three further cases are reported here, with particular reference to a novel dental anomaly, not previously described in detail, in two of them. The dental changes appear to be fully developed by the third decade and are characterized by bilateral multiple impacted molar teeth, which conglomerate in a single follicle to form a characteristic rosette of teeth. Rosetting was present only in relatively mature cases of MPS. However, it was also seen in the fourth patient, where we could not detect any other abnormal clinical or radiographic features. We therefore propose that since multiple rosetting of molar teeth can also occur in an isolated form, it is only suggestive of MPS.

Real-time ultrasonography was used to detect a small foreign body (a broken tip of a barbed broach) which had migrated into the upper lip of a 26-year-old female from the bone defect of the upper canine apex during root canal treatment 10 months previously. Intra-operative use of ultrasound was of great-help in clarifying the positional relationship between the foreign body and the surgical instruments used, and lead to a satisfactory result

Two cases of foreign bodies of the antrum are reported. One was a turbine bur which presumably entered through an oro-antral fistula after a tooth extraction. The other was also a turbine bur where the mode of entry was not clear (lack of oro-antral fistula), but it presumably entered through the socket of the extracted tooth. The mucosa of the antrum appeared normal in spite of the lengthy presence of the foreign body

The pyranoside (III) serves as a common intermediate for the preparation of the synthons (IV) and (V) (syntheses described).