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P Simonsen

Publications and source records attributed to P Simonsen.

5 recordsLinked to original sources
PubMed2005

Tunnel or saucer-shaped restorations: a survival analysis.

The aim of the present effectiveness trial was to compare the survival of restorations placed in saucer-shaped cavities to that of restorations placed in tunnel preparations. Ten operators placed a total of 85 tunnel and 97 saucer-shaped restorations. The dentinal part of the tunnel was restored by resin-modified glass ionomer cement. The remaining part of the tunnel was restored by composite resin using an adhesive technique. Composite resin was used to restore the saucer-shaped cavities. The restorations were assessed clinically and radiographically for up to 79 months, with a mean observation time of 28.8 months for tunnel, and 30.3 months for saucer-shaped restorations. The survival proportion of the tunnel restorations was 46%, and the survival proportion for the saucer-shaped restorations was 76%. A main reason for failure of the tunnel restorations was fracture of the marginal ridge (24% after 24 months). Caries development in relation to the restoration was significantly higher for tunnel restorations compared with saucer-shaped restorations (41 and 19%, respectively, after 24 months). There was no difference between the two types of restoration in marginal deterioration and caries progression in the neighboring tooth (40% after 24 months). Based on findings from the present study, it is suggested that saucer-shaped restorations should be preferred for tunnel restorations in small- and mid-sized cavities.

Adolescent↗
PubMed1986

Chronic facial pain following diseases affecting the maxillary antrum. The influence of peripheral impulses from the maxillary air sinus is not significant in their maintenance.

For the purpose of examining the significance of a pain focus in the maxillary air sinus denervation of the mucosa of the sinus by transantral maxillary nerve section was performed. The material comprises 20 patients with pain in the distribution of the infraorbital nerve and previous disease of the relevant sinus. All patients had been treated previously without any benefit from peripheral surgery of the infraorbital nerve. Only 20% had any benefit of the proximal avulsion for more than three months. It is concluded that impulses from the mucosa of the maxillary sinus do not play any part in the occurrence or persistence of facial pain in this highly selected material.

Adult↗