Maxillary posterior intrusion with corticotomy-assisted approaches with zygomatic anchorage—a finite element stress analysis

Progress in Orthodontics

Table 2 Von Mises stress values over the cortical bone

	Scenario 1 (MPa)	Scenario 2 (MPa)	Scenario 3 (MPa)
Anterior nasal spine	9 × 10⁻³	13 × 10⁻³	14 × 10⁻³
Infraorbital foramen	12 × 10⁻³	14 × 10⁻³	13 × 10⁻³
Zygomatic buttress	55 × 10⁻³	55 × 10⁻³	55 × 10⁻³
Superior of buccal horizontal corticotomy	30 × 10⁻³	7 × 10⁻³	6 × 10⁻³
Inferior of buccal horizontal corticotomy	25 × 10⁻³	20 × 10⁻³	21 × 10⁻³
Maxillary tuberosity	8 × 10⁻³	39 × 10⁻³	45 × 10⁻³
Palatal alveolar process	29 × 10⁻³	39 × 10⁻³	25 × 10⁻³
Palatine process	11 × 10⁻³	12 × 10⁻³	4 × 10⁻³
İncisive foramen	23 × 10⁻³	30 × 10⁻³	32 × 10⁻³

Scenario 1, no corticotomy; scenario 2, buccal corticotomy; scenario 3, buccal and palatal corticotomy; MPa megapascal