Role of Reinforcement Methods in Retention of Composite Restorations of Primary Anterior Teeth
Journal Title: Journal of Dental School Shahid Beheshti University of Medical Sciences - Year 2017, Vol 35, Issue 4
Abstract
Objectives This study aimed to evaluate the retention of composite restorations of primary anterior teeth reinforced with composite posts, glass fiber posts, para-pulpal pins with composite posts, and para-pulpal pins alone. Methods Forty freshly extracted sound primary canine teeth with at least 2/3 of the root length remaining were selected. After disinfection, the tooth crown was cut perpendicular to the longitudinal axis. Root canals were prepared and filled using zinc oxide eugenol paste. The teeth were randomly allocated into four groups and restored using one of the followings: composite posts, glass fiber posts, para-pulpal pins with composite posts, and para-pulpal pins alone. Composite cores were constructed while a preformed U-shaped orthodontic wire was placed in the composite tip, samples were then placed in a universal testing machine for measurement of retention. The minimum force required to dislodge the restoration or cause fracture was considered as the retentive strength. The collected data were analyzed using one-way ANOVA and Tukey’s test (P<0.05). Results There were statistically significant differences between groups (P=0.011). The mean retention in the para-pulpal pins with composite post group (131.72±32.35 N) was greater than that in composite posts (93.65±24.45 N), glass fiber post (95.92±25.35 N), and the para-pulpal pin group (95.34±29.56 N) (P<0.05). Other differences were not significant (P>0.05). Conclusion Para-pulpal pin alone may not help in improving the retention of full crown restoration of primary anterior teeth. However, when used along with a composite post, it appears to improve the retention of restoration.
Authors and Affiliations
Ghassem Ansari, Hassan Torabzadeh, Beheshteh Malekafzali, Reza Yarmohammadi
Keywords
Related Articles
- EP ID EP365927
- DOI -
- Views 78
- Downloads 0
Immunohistochemical Expression of PCNA and Ki-67 in Periapical Granuloma and Radicular Cyst
Objectives: Periapical Granulomas (PGs) and Radicular Cysts (RCs), as the most common odontogenic lesions have yet unclear pathogenesis. This study was aimed to compare PCNA and Ki-67 expression in PGs and RCs and evalua...
Comparison of the Effect of Ball and Bar Attachment Designs on Retention and Stability of Mandibular Implant-Supported Overdentures
Objectives: The present study evaluated the effect of bar and ball attachment designs on retention and stability of a mandibular overdenture supported by four implants. Methods: An edentulous mandibular acrylic resin mod...
Titanium Implant Osseointegration in Rheumatoid Arthritis Patients: Report of Two Cases
Objectives Dental implant rehabilitation in patients suffering from rheumatoid arthritis (RA) has been reported to improve the quality of life. Implant treatment success depends on many factors such as appropriate osseoi...
Prosthetic Rehabilitation of Nasal Defect: A Case Report
Facial defects not only impact on the function and quality of life but also affect the psychological well-being and social behavior of patients. A nasal prosthesis can re-establish the esthetics and anatomical contour in...
Silver Staining Efficiency in Differential Diagnosis of Adenoid Cystic Carcinoma (ACC) from Polymorpheus Low-Grade Adenocarcinoma (PLGA)
Objectives The aim of this study is finding a practical and easy way to differentiate, between two malignant tumors Adenoid Cystic Carcinoma (ACC) and Polymorphous Low-grade Adeno Carcinoma (PLGA) histologically. In this...