Post-orthodontic recontouring using the Injection Resin Technique.

Aim: to present a versatile, rapid and effective technique for post-orthodontic recontouring of lateral upper incisors using flowable composite and a PVS matrix. Methods: a 15-years old female patient presented at the end of the orthodontic treatment with microdontia of the lateral upper incisors. The integrity of the enamel suggested a minimally invasive adhesive technique with a “no prep” approach and the “Injection Resin Technique” was chosen. Alginate impressions of both arches were recorded for the realization of the diagno- stic wax-up. A clear PVS impression material was used to replicate the wax-up, thus obtaining a clear matrix and two small openings were made to allow insertion of the composite tip.The unprepared teeth were submitted to the adhesive protocol, the clear matrix was positioned and an A2-shade flowable resin composite was injected in a controlled manner, taking care to avoid bubbles formation. The resin was light-cured through the PVS matrix for 2 minutes, then without it for 2 more minutes. Composite excesses were removed using a #12 scalpel blade and the restorations were finished and polished. Results: one week after treatment, the patient was called back for a subsequent polishing session and was extremely satisfied with the treatment. Conclusion: sst and minimally invasive solution to complete the aesthetic result of the orthodontic treatment.