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Can palatal splint improve stability of segmental Le Fort I osteotomies?
Author(s) -
Parizotto Julianna Oliveira Lima,
Borsato Karina Tostes,
Peixoto Adriano Porto,
Bianchi Jonas,
Cassano Daniel Serra,
Gonçalves João Roberto
Publication year - 2020
Publication title -
orthodontics and craniofacial research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.664
H-Index - 55
eISSN - 1601-6343
pISSN - 1601-6335
DOI - 10.1111/ocr.12399
Subject(s) - splint (medicine) , medicine , sagittal plane , orthodontics , dentistry , osteotomy , maxilla , anatomy
Objectives The purpose of this study was to evaluate the influence of a palatal splint on stability in multi‐segment maxillary osteotomies. Setting and Sample Population Retrospective series of fifty‐one adult patients, consecutively operated with bilateral sagittal split osteotomy (BSSO) and three‐piece maxillary osteotomies, divided according to the use of a palatal splint (Group 1, n = 30) or no palatal splint (Group 2, n = 21). Materials and Methods Maxillary surgical casts (T1) and post‐retention casts (T2), taken at least six months after discontinuation of orthodontic retention, were digitized (MicroScribe‐3DX), measured and compared. Fifty‐one landmarks were identified on the maxillary, transverse dimension changes and arch length were calculated. Longitudinal changes in all measurements were assessed by t test. Results Post‐surgical transverse instability in group 1 ranged from 0.3 ± 0.4 to −1.3 ± 0.2 mm and was statistically significantly smaller than in group 2 that ranged from −1.0 ± 0.3 to −2.5 ± 0.5 mm. Conclusions The use of a palatal splint after segmental Le Fort I maxillary osteotomy improved transverse stability in the posterior region. The post‐surgical transverse instability occurred only between canine gingival points and thus suggesting no clinical relevance.