Enhancing Orthodontic Esthetics Through Injectable Composite Resin Techniques

The injection moulding technique (IMT) offers a conservative, minimally invasive approach for dental restorations, enabling precise application of thin, flowable composite into a transparent silicone mould. Its fluid consistency allows complete adaptation to the mould and natural tooth surfaces, often avoiding the need for any tooth preparation and preserving tooth integrity. Using an etch-and-rinse protocol, IMT is highly reproducible and particularly advantageous following orthodontic treatment, where minor shape or spacing corrections may be required. Integrating orthodontic and restorative strategies is critical for achieving long-term outcomes in complex cases. This retrospective study reports on the use of IMT for conservative restoration of maxillary lateral incisors in two pediatric patients (aged 12.6 and 12.3 years), applied both before and after orthodontic treatment. The technique served as an interim solution until the patients were ready for definitive all-ceramic veneers. IMT is especially effective for small diastemas, minor gaps, or slightly retruded teeth. The reported cases, which involved irregular tooth shapes and dimensions, highlight how IMT can address these variations additively without invasive procedures. IMT represents a valuable adjunct in pediatric orthodontic care, supporting tooth reshaping and correction of size discrepancies at various treatment stages. When combined with a digital workflow, thermo-printed retainers can be fabricated in the same session, minimizing appointments and offering practical and economic benefits. Overall, IMT enhances both efficiency and treatment outcomes in interdisciplinary orthodontic-restorative management.