CC BY-NC-ND 4.0 · Eur J Dent 2014; 08(04): 445-449
DOI: 10.4103/1305-7456.143614
Original Article
Dental Investigation Society

Fracture resistance of cementum-extended composite fillings in severely damaged deciduous incisors: An in vitro study

Bahman Seraj
1   Dental Research Center, Department of Pediatric Dentistry, Tehran, Iran
,
Sara Ehsani
2   Dental Student's Scientific Research Center, School of Dentistry, Tehran University of Medical Sciences, Tehran, Iran
,
Shirin Taravati
3   Department of Pediatric Dentistry, School of Dentistry, Babol University of Medical Sciences, Babol, Iran
,
Sara Ghadimi
4   Laser Research Center of Dentistry, Department of Pediatric Dentistry, Tehran, Iran
,
Mostafa Fatemi
5   Department of Dental Biomaterials, School of Dentistry, Tehran University of Medical Sciences, Tehran, Iran
,
Sahar Safa
6   Dentist, Tehran, Iran
› Author Affiliations
Further Information

Publication History

Publication Date:
25 September 2019 (online)

ABSTRACT

Objective: The aim of this study was to comparatively assess the fracture resistance of the cementum-extended and conventional composite fillings with or without intracanal composite posts in severely damaged deciduous incisors. Materials and Methods: This in vitro study was performed on 60 extracted deciduous maxillary incisors that were randomly divided into four groups: Group 1: Composite filling (CF); Group 2: Composite filling with composite posts (CF + CP); Group 3: Composite filling extended 0.5 mm to cementum (ceCF); Group 4: Composite filling extended 0.5 mm to cementum with composite posts (ceCF + CP). The fracture resistance was assessed by exerting a progressively increasing load with a cross-head speed of 0.5 mm/min in a Universal Testing Machine. Statistical Analysis: Data were analyzed by SPSS-18 using one-way analysis of variance at ⍱ < 0.05. Results: The mean fracture resistance (MFR) values of the experimental groups were 410.57 ± 139.44 N, 564.44 ± 92.63 N, 507.5 ± 76.37 N and 601.08 ± 96.04 N. A significant difference was found between the MFR of Groups 1 and 2, Groups 1 and 4 and Groups 3 and 4 (P < 0.05). Conclusion: A superior outcome was achieved by intracanal composite posts in both conventional and cementum-extended composite fillings.

 
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