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Sci Rep. 2017 Jul 13;7(1):5356. doi: 10.1038/s41598-017-05788-x.

Assessment of occlusion with the T-Scan system in patients undergoing orthognathic surgery.

Author information

1
OMFS-IMPATH Research Group, Department of Imaging and Pathology, Faculty of Medicine, Catholic University Leuven, Leuven, Belgium. joagbaje@gmail.com.
2
OMFS-IMPATH Research Group, Department of Imaging and Pathology, Faculty of Medicine, Catholic University Leuven, Leuven, Belgium.
3
Oral and Maxillofacial Surgery Department, Faculty of Dentistry, Mansoura University, Mansoura, Egypt.
4
Statistician with the Centre for Educational Effectiveness and Evaluation of the Catholic University of Leuven and Biostatistician at SGS Life Science Services - Clinical Research, Mechelen, Belgium.
5
Faculty of Medicine, Hasselt University, Diepenbeek, Belgium.

Abstract

Dental occlusion varies among individuals, and achieving correct physiological occlusion after osteotomy is essential for the complex functioning of the stomatognathic system. The T-Scan system records the centre of force, first contact, maximum bite force, and maximum intercuspation. The aim of the present study was to investigate the usefulness and consistency of T-Scan in assessing occlusion before and after orthognathic surgery. Occlusal information was evaluated for 30 healthy adults with normal occlusion and 40 patients undergoing orthognathic surgery. T-Scan had a high degree of reliability for consecutive measurements (Pearson correlation, r = 0.98). For most parameters, occlusal distribution was better after surgery than before surgery. More teeth contributed to occlusion at maximum intercuspation after surgery than before surgery (14 vs. 10). In addition, the difference in the posterior force distribution was reduced after surgery (17.6 ± 13.8 vs. 22.7 ± 21.4 before surgery), indicating better occlusal force distribution after surgery. The maximum percentage force on teeth (p = 0.004) and the number of teeth contributing to occlusion (p < 0.001) also differed significantly. Thus, T-Scan is good for assessing occlusal discrepancies and can be used to portray the pre- and post-operative occlusal contact distribution during treatment planning and follow-up.

PMID:
28706294
PMCID:
PMC5509719
DOI:
10.1038/s41598-017-05788-x
[Indexed for MEDLINE]
Free PMC Article

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