Compare Additively vs Subtractively Manufactured Implant Supported Fixed Dental Prostheses

This clinical trial aims to compare two different ways of making dental crowns for patients who need a strong and permanent crown on the back teeth. The study involves patients who will receive implant-supported crowns made either by adding materials layer by layer (additive manufacturing) or by cutting away from a solid block (subtractive manufacturing). The trial takes place at Harvard School of Dental Medicine and the University of Zurich's Center of Dental Medicine. Understanding which method results in better crowns could improve dental treatments and outcomes for patients requiring such dental implants. Participants in the study receive a single implant-supported crown created by one of the two methods, depending on their group assignment. After receiving their crowns, participants are monitored for three years to evaluate how well the crowns perform. The study checks the crowns' clinical performance, including their technical, biological, and aesthetic aspects. Both the dental technicians and patients will report their outcomes, ensuring a comprehensive assessment of the crowns' effectiveness and satisfaction. This research could highlight significant differences in durability and patient satisfaction between the two manufacturing methods.