Baltic Dental and Maxillofacial Journal
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December, 2013, Vol. 15, No. 4

CONTENTS

SCIENTIFIC ARTICLES

Expression of growth factors and growth factor receptors in human cleft-affected tissue
Benita Krivicka, Mara Pilmane, Ilze Akota
115-118

Radiographic assessment of findings in the maxillary sinus using cone-beam computed tomography
Ilze Dobele, Ligija Kise, Peteris Apse, Gints Kragis, Andris Bigestans
119-122

Influence of restorative techniques on fracture load of endodontically treated premolars
Ana Amélia Bianchi e Silva, Paula Cristine Ghiggi, Eduardo Gonçalves Mota, Gilberto Antonio Borges, Luiz Henrique Burnett Júnior, Ana Maria Spohr
123-128

Apoptosis and MMP-2, TIMP-2 expression in cleft lip and palate
Liene Smane, Mara Pilmane, Ilze Akota
129-134

Toothache among dental patients attending a Nigerian secondary healthcare setting
Clement Chinedu Azodo, Oritseweyemi Ololo
135-140

© 2014 Stomatologija

Stomatologija 2013; 15 (4): 123-8 123 KB

Influence of restorative techniques on fracture load of endodontically treated premolars

Ana Amélia Bianchi e Silva, Paula Cristine Ghiggi, Eduardo Gonçalves Mota, Gilberto Antonio Borges, Luiz Henrique Burnett Júnior, Ana Maria Spohr

Summary

Objective. This study evaluated the influence of restorative techniques on the fracture load and fracture mode of endodontically treated premolars with MOD cavities. Materials and Methods: Sixty maxillary premolars were divided into groups: G1 – sound teeth; G2 – direct technique using Four Season; G3 – Adoro inlays; G4 – Adoro onlays; G5 – Empress inlays; G6 – Empress onlays. The specimens were submitted to compressive axial loading until failure. The fracture mode was analyzed.

Results. According to ANOVA and Tukey’s test (α=0.05), the sound teeth (1370.61 N) showed the highest fracture load mean, which did not differ statistically from IPS Empress onlays (1304.21 N). Intermediate values were obtained for IPS Empress inlays (918.76 N), Adoro onlays (861.15 N), Adoro inlays (792.71 N) which did not differ statistically among them. The lowest fracture load was obtained for direct restorations with Four Seasons (696.08 N), which did not differ statistically from the Adoro inlays.

Conclusions. The ceramic restorations provided higher fracture load and more incidences of catastrophic fractures. Cuspal coverage increased teeth fracture load. The results were similar for direct and indirect inlays with composite resin.

Key words: ceramics, composite resins, restorations, resistance.

Received: 06 06 2012

Accepted for publishing: 23 12 2013


1Department of Restorative Dentistry, School of Dentistry, Pontifical Catholic University of Rio Grande do Sul, Brazil

2University of Uberaba, Brazil

3Department of Dental Materials, School of Dentistry, Pontifical Catholic University of Rio Grande do Sul, Brazil

Ana Amélia Bianchi e Silva1 – D.D.S, MSc, PhD Student

Paula Cristine Ghiggi1 – D.D.S, MSc, PhD Student

Eduardo Gonçalves Mota1 – D.D.S., MSc, PhD, adj. prof.

Gilberto Antonio Borges2 – D.D.S., MSc, PhD student

Luiz Henrique Burnett Júnior1 – D.D.S., MSc, PhD, assist. prof.

Ana Maria Spohr3 – D.D.S., MSc, PhD, adj. prof.

Address correspondence to Ana Maria Spohr, Av. Ipiranga 6681 Block 6 – School of Dentistry, Pontifical Catholic University of Rio Grande do Sul (PUCRS), Porto Alegre, Rio Grande do Sul, Brazil.

E-mail address: anaspohr@terra.com.br