Application of 3D Printed Removable Denture Prosthesis Framework for Partial Edentulous Patients

Tooth loss is a major dental problem worldwide. A recent study in Singapore found that approximately one third of adults aged over 65 are living without any natural teeth. Prevalence of loss of some teeth, or partial edentulism, in this population is estimated to be even higher. Tooth loss has a series of deleterious consequences for oral and general health. The high prevalence of tooth loss has resulted in great needs and demands of prosthetic replacements, posing challenges to the public dental care system in Singapore. Removable dentures are the most widely and commonly used device to replace missing teeth and restore oral functions. The removable denture possesses a metal framework that connects other components of the denture, to ensure rigidity and stability while in function. However, the current method of fabricating denture frameworks is a complex, error-prone, time-consuming, and expensive process. Due to the inherent inaccuracies in the materials and technique, fit of the framework is compromised and undesirable to meet patients' satisfaction. With the new development of computer aided design and 3D printing metal techniques, it is now possible to apply digital design and manufacturing for the fabrication of dentures. This proposal aims to compare the precision and fit, and patient satisfaction, of 3D printed and conventional casted removable denture frameworks in preclinical and clinical settings.