Assessment of the fixation of mandibular symphysis fractures using conical cannulated screws: mechanical and photoelastic tests  

Oleh:

Falci, Saulo Gabriel Moreira ; Rodrigues, Danillo Costa ; Marchiori, Erica Cristina ; Brancher, Giulia ; Makyama, Andreia ; Moreira, Roger William Fernandes

Jenis: Article from Journal - ilmiah internasional
Dalam koleksi: Oral Surgery, Oral Medicine, Oral Pathology and Oral Radiology (keterangan: ada di ClinicalKey) vol. 118 no. 02 (Aug. 2014), page 174–180.

Ketersediaan

Perpustakaan FK Nomor Panggil: O04.K Non-tandon: tidak ada Tandon: 1

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Isi artikel

Objective The aim of this study was to use mechanical and photoelastic tests to compare the performance of cannulated screws with other fixation methods in mandibular symphysis fractures. Study Design Ten polyurethane mandibles were allocated to each group and fixed as follows: group PRP, 2 perpendicular miniplates; group PLL, 1 miniplate and 1 plate, parallel; and group CS, 2 cannulated screws. Vertical linear loading tests were performed. The differences between mean values were analyzed with the Tukey test. The photoelastic test was carried out using a polariscope. Results The results revealed differences between the CS and PRP groups at 1, 3, 5, and 10 millimeters of displacement. The photoelastic test confirmed higher stress concentration in all groups close to the mandibular base, whereas the CS group showed it throughout the region assessed. Conclusions Conical cannulated screws performed well in mechanical and photoelastic tests.

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