Dental prostheses are used to replace missing teeth and restore the function and aesthetics of the oral cavity. Fixed partial dentures (FPDs) are a type of dental prosthesis used to replace one or more missing teeth by connecting two or more natural teeth together with artificial teeth. FPDs are designed to withstand the masticatory forces generated during chewing and provide support and stability to adjacent teeth.However, long span FPDs, which replace multiple missing teeth and span a long distance between two or more teeth, can pose a challenge to the dentist due to their increased susceptibility to mechanical failure. Failure of a long span FPD can lead to functional and aesthetic problems and may require expensive and time-consuming repairs or replacement.Therefore, understanding the stress distribution in long span FPDs is essential for their successful design and construction. In this literature review, we will explore the factors that affect stress distribution in long span FPDs and the strategies that can be employed to minimize the risk of mechanical failure.