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Case studies

Case studies. Gary Wilson. Ceramic crown for a fractured canine in a show dog. History . 6 year old female show dog got into fight with kennel mate fractured both upper canine teeth owner opted no treatment 6 months later owner decided to seek restorations [crowns]. Clinical exam.

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Case studies

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  1. Case studies Gary Wilson

  2. Ceramic crown for a fractured canine in a show dog

  3. History • 6 year old female show dog got into fight with kennel mate • fractured both upper canine teeth • owner opted no treatment • 6 months later owner decided to seek restorations [crowns]

  4. Clinical exam • healthy but aggressive bitch • upper right canine fractured in distal 3rd of crown • upper left canine fractured 5mm coronal to gingival margin • both had necrotic pulps

  5. Treatment • both canines were treated endodontically to be re-assessed in 3 months – upper right was recontoured to approach a normal shape • 3 month recheck – both good periapically & owner opted for ceramic crown restoration of upper left canine

  6. Crown prep • under general anaesthesia the left canine was reduced with a round-end taper diamond bur in a high speed handpiece

  7. Crown prep • an attempt was made to produce an axial wall taper as close to parallel as possible • the apical margin was made approximately 0.5 – 1 mm above the gingival margin • an external bevel shoulder was produced at the margin

  8. Crown prep • mouth & dental impressions weremade with alginate for production of stone models • vinyl polysiloxane impressions of the crown prep were made for accurate crown production

  9. Crown manufacture • instructions were given to the technician for a colour matched ceramic crown to be produced that matched the size & shape of the upper right canine

  10. Crown placement • 2 weeks later the dog was re-anaesthetised and the crown “trial fitted” • the tooth surface & inside of the crown were acid etched, rinsed, dried & 3M single bond applied, dried & cured • dual cure resin cement [3M RelyX] was mixed & crown cemented in place & the margin light cured • excess cement was trimmed off

  11. the bitch has resumed its show career

  12. Apparently missing permanent upper right canine

  13. History • 8 month old Staffordshire bull terrier bitch presented with an apparently missing permanent upper right canine • all other permanent teeth had fully erupted • a fractured upper right deciduous canine was present

  14. Treatment • the dog was anaesthetised & the deciduous tooth remnants extracted • an intraoral radiograph was taken

  15. Treatment • a probe was passed through the alveolus of the extracted deciduous tooth to attempt to pinpoint the structure & re-x-rayed

  16. Treatment • a buccal approach was made over the tooth & it was located & removed

  17. Treatment • the site was closed in a single layer with 4/0 monosyn & the dog made an uneventful recovery

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