Clinical Continued »


CASE REPORT: SCREW-RETAINED CROWNS TO RESTORE 24, 25


Fig 1 Fig 2


The following case, from the team at Vermilion, highlights the five steps involved in restoring a typical case with screw-retained crowns. Patient: 56-year-old man, fit and


well, no known drug allergies, no medications, non-smoker. 24 missing for over ı0 years.


Bridge abutment 25 fractured root on 9 November 20ıı, rendering two-unit cantilever bridge non- viable (Figure ı and 2).


Fig 3 Fig 4


Step 1 – Consultation: 16 November 2011 Restorative and surgical consulta- tions with prosthodontist Grant Mathieson and oral surgeon David Offord. Given this patient’s heavy bite, and the history of the failed cantilever bridge, it was recommended that two implants be placed to retain two implant- crowns.


Fig 5 Fig 6


Step 2 – Implant surgery: 8 December 2011 Surgery with David Offord. Extrac- tion 25 root, flapless immediate placement of implants at 25 and 24. The implants were two Ankylos Aıı implants (diameter 3.5mm, length ıımm). Both achieved excel- lent primary stability. Two healing abutments were placed finger- tight for trans-gingival healing.


Fig 7 Fig 8


Step 3 – Implant impres- sions: 16 February 2012 The Ankylos 3.0b sulcus formers are removed to reveal a healthy gingival tunnel to the implant head (Figure 3). The implant impression copings


are seated into the implants and checked on a radiograph prior to the impression being taken (Figure 4). This is usually the first radio-


Fig 9 Fig 10


graph obtained of the implants, allowing the restoring dentist to check that the impression copings are fully seated within


46 Scottish Dental magazine


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