Objective: This clinical case series reports a non-invasive treatment of complex transposition using injection moulding to obtain a predictable aesthetic outcome.
Material and Methods: A 25-year-old female and a 29-year-old female reported with a request to improve the aesthetic appearance. Clinical examination revealed transposition of maxillary canines in place of a central and lateral incisor, respectively. The proposed treatment in both cases was injection moulding due to its non-invasive nature. A wax-up was made to replicate ideal tooth morphology. A silicone key of the wax-up was obtained using a clear polyvinyl siloxane impression material. A fine needle diamond was used to drill the holes in the key to facilitate injection of composite resin. After prophylaxis, the procedure was started sequentially for both cases. The teeth were isolated with teflon tape and adhesive protocol was followed. Next, the silicone key was positioned onto the teeth and composite was injected. G-ænial Universal Injectable, shade A1 was selected for the procedure. Next, it was light cured through the transparent silicone. Finishing and polishing were performedincluding surface textures to obtain a natural and life-like appearance.
Results: The injection moulding technique provided an easy, non-invasive and predictable approach to plan restorations in challenging scenarios with complex morphology.
Conclusions: This treatment approach provided excellent function and aesthetics with advantages including minimal tooth structure loss and cost effectiveness.
Keywords: composite resins, adhesive, aesthetics, injection moulding, transposition, layering
