Abstract Number: 7
Category: Clinical Report
Non-Invasive Esthetic Management of Tooth Transposition Using Injection Molding
Paramashivaiah Ashwinia* (dr.ashwini.p@gmail.com) | Manoj Sindagi Swabhaanua | Bipin Raj Kruthia | Mehta Deepakb
a Rajiv Gandhi University of Health Sciences, Bangalore, India
b Tohuku Univeristy, Sendai, Japan
Objective: This clinical case series reports a non-invasive treatment of complex transposition using injection moulding to obtain a predictable esthetic outcome.
Clinical Case: A 25- and a 29-year-old female reported with a request to improve the esthetic appearance of their smile. Clinical examination revealed transposition of maxillary canines in place of a central and lateral incisor respectively.
Treatment: The proposed treatment in both cases was Injection Molding due to its non- invasive nature. A wax-up was made to replicate ideal tooth morphology in consultation with the patient. A silicone key of the wax-up was obtained using a clear polyvinyl siloxane impression material (Exaclear, GC). 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 the cases. The teeth were isolated with Teflon tape and then the enamel was etched to obtain micro-mechanical retention. A universal adhesive (G-Premio Bond, GC) was applied, left undisturbed for 5 seconds before light curing. Next, the silicone key was positioned onto the teeth and composite was injected. G-ænial Universal Injectable, shade A1 was selected for the procedure because of its improved wear resistance and high filler loading then light cured through the transparent silicone. After removal of the key, the excess was removed with a scalpel blade No 12. Further finishing and polishing was performed including surface textures to obtain a natural and life-like appearance.
Results: The Injection Molding Technique provided an easy, non-invasive and predictable approach to plan restorations in challenging scenarios with complex morphology.
Conclusion: This treatment approach provided excellent function and esthetics with advantages including minimal tooth structure loss and cost effectiveness.
Funding/Conflict of Interest: None
Keywords: injection molding, composite resins, esthetics
