IntroductionPartial dentures are commonly used in the dental field for patients with missing teeth. Having a partial denture in your mouth is likely to move during operation. The movements of the partial denture in the mouth are due to the response to functional loads, since these are not rigidly connected to the teeth or tissues. It is essential to consider all possibilities to stop these movements during the design. Biomechanical considerations are necessary in their design to produce RPDs that satisfy the patient and are stable when in the mouth. During the developmental stages of the RPD each component should be designed to control possible movements which may be vertical displacements, rotations towards, away from or horizontally through the underlying tissue (Carr et al., 2005). To reduce these problems it is advisable to carry out a static analysis. Static analysis of the models is performed to determine the best position of the supports and clasps to reduce the axis of rotation to produce a fully functional partial denture without the tipping effect. Static analysis is essential in dentistry during the construction of partial dentures. Static analysis is recommended to determine how the prosthesis reacts to forces applied to various saddle constructions. The information collected during the static analysis allows us to draw conclusions on the detailed design of the structural elements as well as indications on the limits of use of the cast skeletonized prosthesis. Static analysis must be completed after designing the base but before planning the anchoring. However, the static analysis represents a theoretical determination and not a structural element of the partial denture. Once in the mouth, the partial denture tends to shift and... center of paper... support for a long lingual bar major connector or an extended palatal major connector. For class IV, indirect restraint should be placed as posteriorly as possible (Devenport et al., 2001). Conclusion Aesthetics is a matter of great concern for patients receiving partial dentures, however, the function of the partial denture in the mouth is very important. Having a partial denture in your mouth there are forces acting in your mouth during operation that could dislodge or dislodge the denture. However, shifting or tipping motion of the partial denture can be reduced by using an indirect retainer. However, performing static analysis when designing the partial denture will greatly solve the problem. Static analysis allows us to see how the prosthesis reacts to forces and from this we can design an RPD that will be stable and meet the patient's needs and demand.