Abstract
Objectives: the purpose of this study was to evaluate the knowledge among dental students at King Khalid University, Jazan University, and Najran University in the kingdom of Saudi Arabia about when to repair or replace defective direct composite restoration. Materials and Methods: A questionnaire-based survey was formulated, pursuing the information about management (repair/replacement) of defective composite restorations and distributed among 200 dental students of three universities in the southern region of the kingdom of Saudi Arabia.The data were collected with the help of an online questionnaire. Data entry and the analysis were done using the statistical software package SPSS version 20.0. It was presented using descriptive statistics in the form of frequencies and percentages for qualitative variables, and range means and standard deviations for age, quantitative variable. Analytic statistics ere done using Chi-Square tests (x2) to test the significant difference between categorical variables. The level of significance, the p-value was 0.01 (p < 0.01). Results: The decision to choose between composite repair or replacement was influenced by whether this topic was taught to them at various undergraduate levels during Bachelor of Dental Surgery. The reason associated with the decision to repair defective composite restorations, 76% reported as cost-effective followed by Increased longevity (71%), the permanent filling (70%), patient’s preference for repair (65%), and least time consuming (50%). 67% participants preferred significantly (p<0.001) repair due to secondary caries in the previously restored tooth with composite, followed by the small surface defect in a composite restoration (65%), risk of pulpal damage significantly (p<0.001) in a defective composite restoration (62.5%) and more invasive and destructive treatment option (35%). More than half of respondents 123 (61.5%) reported that they were not taught about composite repair during the Bachelor of Dental Surgery. Conclusion: It is suggested with the help of our study that didactic and clinical training components regarding composite repair should be seriously included in the teaching curriculum of dental institutions as it is in the best interest of the patient. Dental students should be provided with clinical training on this topic so that they can follow proper decision-making protocols available during repair or replacement of defective resin composite restorations. Other researches in the future can be carried out for refining the guidelines and techniques utilized for composite repair. KEYWORDS Composite restoration; Discoloration; Polymerization shrinkage; Secondary caries.
Highlights
R ecently direct resin-composite is widely used in dental practice due to its preferred tooth-color matching and recent modifications like improved mechanical properties
It is suggested with the help of our study that didactic and clinical training components regarding composite repair should be seriously included in the teaching curriculum of dental institutions as it is in the best interest of the patient
On asking for the reason associated with the decision to repair defective composite restorations 76% announced as cost-effective followed by increased longevity (71%) (Table II). 67% participants preferred significantly (p
Summary
R ecently direct resin-composite is widely used in dental practice due to its preferred tooth-color matching and recent modifications like improved mechanical properties. Nowadays it can be used in posterior teeth to withstand occlusal forces. Dental restorations tend to have a limited service life in a harsh oral environment and be prone to failure. When placed into the hostile oral environment, composites commonly suffer deterioration and degradation in clinical service over time [2]. The annual failure rates of anterior and posterior composite restorations commonly vary between 1% and 4% [3,4]
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