Abstract
Implant born prosthetic rehabilitation of tumour patients can be difficult to perform.
Challenges in treating such patients include disrupted anatomy with limited mouth
opening due to previous ablative surgery as well as free-flaps or simple bone grafts,
adjuvant therapy such as radiotherapy and, in general, poorer general health. Combining
classical knowledge of ideal prosthesis placement and current virtual planning possibilities
the positioning and in consequence the survival of dental implants can be optimised.
Since prosthetic rehabilitation has a positive effect on the patients’ quality of
life and general health, we propose performing such surgeries as early as possible.
All patients at our institution receiving pre-planned guided implant reconstruction
and postoperative evaluation with Cone Beam Computed Tomography (CBCT) between 2015
and 2018 were evaluated for inclusion. Eight patients with a total of 30 implants
met the inclusion criteria. The planned implant position was compared to the outcome
position by fusing the two and deviations in entry-point position, apex-position,
angular deviation and depth error were recorded. The mean (SD) discrepancy at entry-point
was 2.28 (1.45) mm and 2.89 (1.53) mm at the apex, respectively. Mean (SD) angulation
discrepancy was 9.5˚ (4.13˚) and the mean (SD) depth deviation was 1.52 (0.86) mm.
Our results demonstrate the feasibility of pre-planned implant placement in challenging
clinical situations and that only few concessions have to be made for precision.
Keywords
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Article info
Publication history
Published online: June 15, 2020
Accepted:
June 3,
2020
Identification
Copyright
© 2020 The British Association of Oral and Maxillofacial Surgeons. Published by Elsevier Ltd. All rights reserved.
