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:: Volume 30, Issue 4 (10-2018) ::
J Iran Dent Assoc 2018, 30(4): 132-138 Back to browse issues page
Longevity of Amalgam Build-Up Restorations in Endodontically Treated Teeth
Hamid Kermanshah * 1, Sholeh Ghabraei2 , Mohammad Javad Kharrazifard3 , Marzieh Monjazeb4 , Negin Farahmandpour5
1- Associate Professor, Dental Research Center, Dentistry Research Institute, Tehran University of Medical Sciences, Tehran, Iran; Department of Operative Dentistry, School of Dentistry, Tehran University of Medical Sciences, Tehran, Iran
2- Assistant Professor, Department of Endodontics, School of Dentistry, Tehran University of Medical Sciences, Tehran, Iran
3- Research Member, Dental Research Center, Dentistry Research Institute, Tehran University of Medical Sciences, Tehran, Iran
4- Dentist, Private Practice, Sydney, Australia
5- Restorative Dentistry Specialist, Hjørring, Denmark
Abstract:   (3337 Views)
Background and Aim: Restoration of endodontically treated teeth is one of the most important and challenging topics in restorative dentistry. Longevity of such restorations is an essential factor in treatment planning. Amalgam build-up is a conservative method for restoration of endodontically treated teeth. Therefore, this study aimed to assess the longevity of this type of restoration in endodontically treated molar teeth.
Materials and Methods: In this retrospective study, 110 endodontically treated molar teeth of 98 patients that had received amalgam build-up restorations with at least one cusp coverage with 3-10 years of longevity were evaluated. The restorations included mesio-occluso-distal (MOD;40%), disto-occlusal (DO;23%), mesio-occlusal (MO;17%) and complex amalgam restorations (20%). Binary logistic regression and Kaplan-Meier tests were used for statistical analysis.
Results: Of all restorations, cracks were observed in 22.7% of restorative materials and 10.9% of teeth. Secondary caries was found in 29% of the teeth. Based on binary lo-gistic regression, MOD restorations had significantly higher rate of marginal fracture and recurrent caries (P<0.05). Teeth with one or four built-up cusps were significantly more resistant to fracture compared to other groups. Patients, who regularly used dental floss had significantly lower rate of secondary caries and restoration fracture (P=0.032).
Conclusion: The average longevity of amalgam build-up restorations was 8.45 years, which is comparable to minimum longevity of casting restorations. Thus, amalgam restorations seem to be an acceptable conservative method for restoration of endodontically treated teeth.
Keywords: Longevity, Dental Amalgam, Dental Restoration, Permanent
Full-Text [PDF 381 kb]   (2136 Downloads)    
Type of Study: Original | Subject: Restorative Dentistry
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Kermanshah H, Ghabraei S, Kharrazifard M J, Monjazeb M, Farahmandpour N. Longevity of Amalgam Build-Up Restorations in Endodontically Treated Teeth . J Iran Dent Assoc 2018; 30 (4) :132-138
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Volume 30, Issue 4 (10-2018) Back to browse issues page
Journal of Iranian Dental Association

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