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Table 2 Comparison of stresses between RME and I-RME

From: Comparison and evaluation of stresses generated by rapid maxillary expansion and the implant-supported rapid maxillary expansion on the craniofacial structures using finite element method of stress analysis

Site RME Implant-supported RME
Stress (MPa) Principle stress contours (MPa) Stress (MPa) Principle stress contours (MPa)
Midpalatal suture 4.77 5.2 17.12 18.53
Naso-maxillary suture 0.67 0.62 2.72 2.52
Zygomatico-maxillary suture 0.51 0.53 3.86 3.37
Pterygo-maxillary suture 3.87 3.5 6.98 6.65
Intranasal suture 0.72 1.18 4.26 2.14
Fronto-maxillary suture 0.65 0.70 3.93 4.21
Naso-frontal suture 0.53 0.73 1.73 1.91
Zygomatico-temporal suture 1.87 0.74 1.83 1.80
Zygomatico-frontal suture 0.58 -0.21 1.38 0.86
Spheno-occipital synchondrosis 1.24 1.61 9.01 6.80