Predictors of procedural errors in class II resin composite restorations using bitewing radiographs

Area of Science:

• Dentistry
• Dental Materials

Background:

• Procedural errors in dental restorations can lead to complications and affect long-term outcomes.
• Dental students require comprehensive training to master techniques for posterior proximal resin composite restorations.

Purpose of the Study:

• To identify factors contributing to procedural errors in posterior proximal resin composite restorations placed by dental students.
• To analyze the relationship between patient, operator, and clinical factors and the occurrence of restoration errors.

Main Methods:

• A retrospective analysis of 803 bitewing radiographs of posterior proximal resin composite restorations.
• Radiographic signs of failure were assessed, and patient, operator, and clinical factors were recorded.
• Statistical analysis using Chi-square tests and logistic regression identified predictors of procedural errors.

Main Results:

• Internal gaps and voids were the most frequent errors.
• Molars had lower risks for internal voids, sharp angles, and open contacts compared to premolars.
• Junior students showed a higher risk of internal gaps compared to senior students.

Conclusions:

• Procedural errors are more common in premolars and MOD cavity preparations.
• Improving laboratory training and clinical exposure to diverse scenarios is essential for dental students.