 Hello everyone, welcome back to another session in dentistry and more today's topic in prosthodontics is compensatory curves So these are the curves where we keep our artificial teeth So as to achieve a balanced occlusion. So we have Three curves basically one is curve of speed curve of monsoon and curve of Wilson. So ultimately these compensatory curves Manages the teeth alignment in such a way that there will not be any Dislodgement there will not be deviation of occlusion forces So it will be in a harmony. So to achieve a balanced occlusion. So we'll start with the curve of speed So it is an atomic curve. That is a curve of speed. It is an atomic curve Established by the occlusion alignment of the teeth as projected onto a median plane. Okay So it begins from the cusp tip of mandibular canine Then following the buckle cusp tips of the primolars and molars and Continuing with the anterior border of the ramus and ending with the anterior most portion of the mandibular Contile. Okay. So don't worry about this picture. It's not a perfect picture. So anyway, it's starting from canine following the buckle cusps of Primolars and molars the anterior border of the ramus then The anterior most portion of the mandibular content So this should be the teeth arrangement. Okay, so if you are Arranging in a curve of speed there will not be any much forces which can dislodge the balanced occlusion or dislodge the denture So we need to arrange in a curve of speed alignment So the second one is curve of wilson. Okay, so it is basically to arrange the molars So you can see the molars are arranged here So the lower teeth are inclined lingually, so there is a lingual inclination of lower teeth and Which giving prominence to the buckle cusps and bringing them into a heavy occlusion contact with the upper buckle cusp Okay So you can see it is slightly Going away the upper teeth are moving away and this is converging. This is diverging So the buckle cusp is going between the cusp The maxillary molars so to give a heavy occlusion contact with the upper buckle cusp Okay, so this is a upper buckle cusp So when we have lateral movements on working site We need to give a heavy occlusion contact on the upper buckle cusps. So that is a wilson compensatory curve. This is basically for the arrangement of molars And the last one is curve of monzone curve of monzone The curve of occlusion in which each cusp and incisal edge touches a segment of a surface of A eight inch sphere. So if we extend this Okay, we extend this like this It will become a eight inch sphere. This will be a four inch. This is the radius And this will be the diameter. So it will become a circle of eight inch so this is almost like a four inch equilateral triangle from the point Glebella and this is a hinge joint and this is a tip where the Both occlusion rim joints. So this is a eight inch radius Circle with a center point at Glebella. So it is a concept is such a way that The occlusion so the curve of occlusion in which the each cusp and incisal edges touches a segment of a surface of a sphere So all the cusp tip and incisal edges touches the sphere Okay, so the sphere means A sphere of eight inch radius with the center at Glebella So we need to Put all these compensatory curve concept when arranging the Artificial teeth so as to achieve the balanced occlusion. So it is to achieve balanced occlusion So if you understood the concept of compensatory curves, I'll come up with a new topic in prosaeronics. Thank you