Fracture resistance of teeth with structural loss restored with composite resin and self-etching adhesive system
Journal Title: RSBO - Year 2010, Vol 7, Issue 1
Abstract
Introduction: One of the current concerns in dentistry is the search for new restorative techniques and materials, aiming the recovering of lost portions of the dental element with restorations that ensure the greatest longevity. Objective: To evaluate fracture resistance of maxillary premolars that show deep cavity preparations and are restored with composite resin (3M ESPE Z250) associated with a conventional onebottle adhesive (3M ESPE Adper Single Bond) or a two-step self-etching adhesive (Clearfil SE Bond, Kuraray). Material and methods: Thirtytwo healthy maxillary premolars were selected, embedded from the root in chemically activated acrylic resin inside PVC plastic cylinders and randomly divided into 4 groups: G1 – healthy teeth without preparation (positive control); G2 – only preparation (negative control); G3 – restoration with conventional one-bottle adhesive (two-step); G4 – restoration with self-etching adhesive. All samples were submitted to fracture toughness test using a universal testing machine Versat 502 at a speed of 0.5 mm/min. Results: Mean resistance values, expressed as kgf, for the different groups were as follows: G1 – 147.60 (±24.74); G2 – 56.51 (±11.64); G3 – 135.31 (±42.92); G4 – 81.13 (±18.05). The data obtained were submitted to statistical analysis (ANOVA), complemented with the Tukey test for multiple comparisons, and the level of significance was set at 1%. Conclusion: Group 1 (healthy teeth) showed the highest fracture resistance mean, similar to group 3 (teeth restored with conventional adhesive); groups 2 (teeth with preparation) and 4 (teeth restored with self-etching adhesive) showed statistically similar mean resistance values, although lower than the mean values found in groups 1 and 3; the self-etching adhesive system presented a significantly lower result when compared to the conventional onebottle adhesive system.
Authors and Affiliations
Alcebiades BARBOSA, José PIAZZA
Keywords
Related Articles
- EP ID EP134272
- DOI -
- Views 154
- Downloads 0
In vitro analysis of the apical deformation, using a different number of files during the instrumentation
Introduction and objective: The aim of the present study was to evaluate in vitro the apical deformation in roots of crooked lower incisors with mesio-distal flattening, using a different number of files during the instr...
Comparison of two radiographic techniques for assessing the level of alveolar bone crest in patients with periodontal disease
Introduction and objective: To quantify and compare the level of alveolar bone loss on panoramic and periapical radiographs of five (5) patients presenting periodontitis. Material and methods:On the panoramic and periapi...
The use of ultrasound in periapical curettage: case report
Introduction and objective: This study aimed to demonstrate the possibility of treatment, through periapical curettage with the aid of ultrasound, consequently without the need of resection of root’s apical portion. Case...
Evaluation of the information level about periodontal disease of the patients on treatment in Periodontics Clinic from Univali
Introduction and objecttiive:: The study evaluated the learning level about periodontal diseases in patients in treatment on Periodontics Clinics I e II from Univali during 2006. Material and methods: It was created a...