Fragment reattachment technique viable treatment option for Complicated Crown Fractures with Debonding Risk: Study
Researchers have found in a new study that fragment reattachment technique is a viable method for managing complicated crown fractures, though fracture lines closer to the tooth neck raise debonding risk. Glass fiber-reinforced posts with dual-cure resin (GD) showed superior stress performance in experimental testing compared to other adhesive systems.
The study evaluated different reattachment approaches in simulated crown fractures, examining bond strength, fracture resistance, and failure modes under load. Findings showed that while reattachment preserved aesthetics and tooth structure, the risk of debonding increased when fractures occurred near the cervical region, where stress distribution is more complex. Stress analysis further indicated that GD reinforcement provided better mechanical stability, reducing the likelihood of secondary failure. This suggests that material selection plays a critical role in improving long-term success rates of fragment reattachment.
Complicated crown fractures, often caused by trauma, present a clinical challenge due to functional and cosmetic considerations. Traditional restorative approaches may involve crowns or prosthetics, but reattachment offers a more conservative and cost-effective solution when the fractured fragment is available.
The authors emphasized the importance of case selection, adhesive system choice, and precise clinical technique to maximize treatment success. They concluded that while reattachment remains a promising conservative option, careful planning is essential to minimize debonding risk in high-stress regions of the tooth.
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