Three-dimensional effects of pterygomaxillary disconnection during surgically assisted rapid palatal expansion: a cadaveric study.

Three-dimensional effects of pterygomaxillary disconnection during surgically assisted rapid palatal expansion: a cadaveric study.

Oral Surg Oral Med Oral Pathol Oral Radiol. 2016 Jan 3;

Authors: Möhlhenrich SC, Modabber A, Kamal M, Fritz U, Prescher A, Hölzle F

Abstract
OBJECTIVE: The aim of this study was to investigate the influence of pterygomaxillary disconnection on the transversal expansion of the maxilla.
STUDY DESIGN: Fifteen cadaver heads were used for surgically assisted rapid palatal expansion (SARPE), which was carried out twice on the same heads-with and without pterygoid disconnection. The maxillae were expanded by 10 mm by using a rapid palatal expander. Study models before and after both SARPE techniques were made and scanned by an oral scanner for virtual analysis by software.
RESULTS: Performing pterygomaxillary disconnection during SARPE led to a decrease in the deviation between the incisor regions from 5.42 ± 1.13 mm to 4.05 ± 1.12 mm (P = .002) and an increase in the distance between second premolar regions from 2.63 ± 1.64 mm to 4.07 ± 2.01 mm (P = .040).
CONCLUSIONS: SARPE without pterygomaxillary disconnection led to a V-shaped transverse expansion of the maxilla, whereas osteotomy of the pterygoid plates led to a parallel transverse expansion.

PMID: 26948022 [PubMed - as supplied by publisher]

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