jeudi 31 octobre 2019
Posted by: Paola Pino
Study examines the aesthetic differences between immediate or early implant placement and immediate restoration
Implant-borne single-tooth restorations are a well-documented treatment for the anterior maxilla. The aesthetic aspects of these rehabilitations have increasingly come into focus, evaluating the soft tissue around the implant as well as the prosthetic restoration itself. This study compared the White Esthetic Score for two standardised treatment approaches in a randomised clinical trial, with the hypothesis that the differing treatment modalities would not result in significantly different outcomes.
24 patients with a single failing maxillary incisor were randomly assigned to receive an implant either directly after tooth extraction (Immediate Implant Placement, IIP, n = 12), or after a healing period of 6 weeks (Early Implant Placement, EIP, n = 12). The alveolar ridge was always grafted with a bovine bone substitute and a collagen membrane. All implants were professionalized within 24 hours. Final restorations in both groups were delivered 12 weeks later.
Approximately 6 months after completion of treatment, standardised photographs were taken, utilising a special camera stand to ensure comparability. Five dental professionals assessed the aesthetic outcome of the implant restorations with the White Esthetic Score. The professionals’ assessment was based on five areas: 1. General tooth form, 2. Crown outline and volume, 3. Colour, 4. Surface texture, and 5. Translucency/characterisation.
For all five single parameters, results were slightly better in the IIP group, yet not significantly. Both methods rendered comparable aesthetic results, by trend with a better outcome for IIP. A relatively large discrepancy was found for crown outline and volume. The authors note that. Both types of placement received low values for translucency/characterisation, but this may be explained by the difficulty of assessing this based on a photographic image.
This study was presented as an e-poster at the 2018 EAO Congress.