Boermans, B. (Bas) (2013) Lange Termijn Relapse na een Kaakosteotomie gefixeerd met Biodegradeerbare of Titanium Platen en Schroeven : Een Prospectief Cohortonderzoek op basis van een Multicenter Randomized Controlled Trail. thesis, Dentistry.
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Abstract
Biodegradable fixation systems could reduce or even delete problems and costs associated with titanium plate removal. The aim of this study was to compare the long-term relapse of jaw orthognatic procedures between patients, treated with a biodegradable system and patients, treated with a titanium system. Materials and Methods: A multi-centre RCT was performed in the Netherlands from December 2006 to July 2009. Originally 230patients were included who underwent osteotomies or were treated because of a fracture. The patients were randomly assigned to either a titanium-group (KLS Martin) or to a biodegradable-group (Inion CPS). In the current study only patients of at least 18 years old who underwent an osteotomy were included. Simultaneous genioplasty was excluded. Analysis was performed by digitally tracing lateral cephalograms. Results: Because there were not enough patients who underwent aLe Fort-I osteotomy or a himaxillary osteotomy only patients who underwent a bilateral sagittal split osteotomy (BSSO) were included for analysis. Long-term outcome for relapse in BSSO advancements was not statistically different at point Bin the analyses. Neither in horizontal (p=0.71) nor vertical (p=0.41) dimension between patients treated with the biodegradable fixation material and the titanium fiXation material. There is a relationship between the magnitude of the advancement and relapse, i.e., the larger the surgical advancement, the larger the relapse ( -0.4 (95%CI -0.8 to -0.1); p=0.008)). Discussion: Result from our study were similar with the results found in other studies, although there were some differences in cephalometric measurements, follow-up time, the biodegradable fixation system used, and surgical methods. In contrast to most other studies, our study was set-up as a RCT. Therefore, our study defmitely adds stronger scientific evidence to the available literature. Conclusion: When comparing Inion CPS with KLS Martin titanium osteosynthesis system long-term outcome for relapse in BSSO advancements was not statistically different in horizontal and vertical dimension. There is a relationship between the magnitude of the advancement and relapse in both groups, i.e. the larger the surgical advancement, the larger the relapse.
| Item Type: | Thesis (Thesis) |
|---|---|
| Supervisor name: | Bakelen, Drs. N.B. van and Centrum Groningen. and Bos, Prof. Dr. R.R.M. kaakchirurg |
| Faculty: | Medical Sciences |
| Date Deposited: | 25 Jun 2020 10:42 |
| Last Modified: | 25 Jun 2020 10:42 |
| URI: | https://umcg.studenttheses.ub.rug.nl/id/eprint/403 |
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