Development of patient specific molar crown using additive manufacturing

Abstract

Background: The Human maxillary and mandibular molar crowns damages due to various reasons. The traditional manufacturing process of patient specific molar crown includes, mirror impression, wax cavity creation, Investment casting and machining for finishing. So, it requires more manufacturing time. newline newlineAim: The Aim of this research is to reduce the manufacturing time for the patient specific maxillary and mandibular molar crown using the innovative manufacturing process called Additive manufacturing. newline newlineMaterials and Methods: The development of patient-specific dental prosthesis has a wide range of applications. The thesis work describes constructing dental prosthesis such as molar crowns for damaged tooth using Additive manufacturing. The whole work is classified broadly in two areas: 1) Analytical approach and 2) Manufacturing process. The analytical approach concentrates towards mechanical behaviour of biocompatible materials such as Cobalt-Chromium alloy and Zirconia under loading conditions. The load conditions for the molar depend on the chewing force for different food products. As per the extraction of research articles the loading range falls between 100N to 700N.Here the amount of stress, for the molar crown for two different biocompatible materials, found using a mathematical model and Finite element analysis. The dimensions of the patient-specific maxillary molar crown are Mesiodistal Width (Front Width): 13mm, Cervico-occlusal height (Height):8.4mm and Buccolingual dimension (Breadth): 10.8mm provided by the dentist. newline newlineResult and Discussion: The mathematical modelling of the molar crown provides the range of volumetric stress 12.36 N/mm2 for the load of 700N and 1.76 N/mm2 for the load of 100N. This is the basic methodology to find the mechanical behaviour of materials. To validate the results of volumetric stress researcher had used the Finite element analysis methodology. The Finite Element Method (FEM) is a numerical technique to seek out the solutions of partial differential equations. newlineConclusions: It is