Mulligan Mechanics Part X Mulligan Overlay Arch (Sagittal Plane)
By Dr. Adrian J. Palencar, MUDr, MAGD, IBO, FADI, FPFA, FICD
June 2025
IAO Diplomate
68 – Tremont Drive, ST. Catharines
ON L2T 3B2, Canada
Do not memorize, understand – Dr. T. Mulligan
Correction of the canted incisal arc – incisal plane.
The author is presenting a 12-year-old Caucasian female, with 8.0 mm overbite and 2.0 mm over-jet, crowding, short upper lip and gummy smile. Her chief complaint was “my teeth are crowded, and I do not like to smile, because I show too much gum.”
The proper treatment would be an upper lip lengthening with an intrusion of the maxillary anterior sextant. However, the patient and parents declined the surgical procedure.
The intrusion of the maxillary sextant was done with the assistance of two TADs.
However, at the pre-de-bracketing appraisal we noticed a canted incisal plane as it related to the inter-pupillary plane and the stomion of the lower lip. The left side was a little higher, therefore, we decided slightly to extrude this side. The Overlay Arch was ligature tied between #21(9), 22(10), 23(11) and activated with the bilateral Tip forward (more on the left and less on the right side). The incisal cant was corrected
References:
- Mulligan T.F., Common Sense Mechanics in Everyday Orthodontics,
- Palencar A. J., Case finishing and Mechanics,