 Hello everyone, welcome back to another session on dentistry and world today We have two interesting compensatory curve that is curve of wilson and curve of monsoon So last session we have seen curve of speed. So, let's see what is curve of wilson and curve of monsoon? Wilson curve of wilson is The red line which is passing through the buckle and lingual cusp of posterior teeth So, this is wilson's curve. So, this should be looked from the front side. That is a frontal view You can see this red line which is passing through the buckle and lingual cusps so this will be concave in the mandible or the lower teeth and convex in the upper teeth or maxillary teeth So, it is a curve which contacts the buckle and lingual cusps of Mantibular posterior teeth and it is convex in maxilla and concave in mandible So, what is the importance of this curve? So, all these compensatory curves are supposed to be Helping us to arrange the teeth to a perfect or ideal occlusion So The crowns of mantibular posterior teeth must incline to lingual Aspects. So, this is little inclined to the lingual side and the crowns of maxillary Posteriors must incline to buckle side. Okay So, then only we get a proper curve of wilson So, the molar inclination is always should be greater than the premolar inclination So, when we arrange teeth in order to get a proper curve of wilson or not to have a proper occlusion We need to incline molars more than the premolas So, why we are doing this the teeth parallel to the medial teregoid muscles for optimal resistance to Get the masticatory forces. So, when we arrange the teeth parallel to medial teregoid There will be optimum resistance for the masticatory forces and also we are keeping this elevated buckle cusps So, buckle cusps are prevent food from going past the occlusion table. So The reason for this Inclineation one is it is keeping parallel to the medial teregoid to get the optimum resistance of masticatory forces and also this Buckle tilting to prevent the food from going past the occlusion table So, the next we have Curve of Mansoom. So, Mansoom curve is nothing but Compining curve of P and wilson's curve So, when we are combining curve of P and curve of wilson by connecting all the cusps and incisal edges We get Mansoom's curve So, this red line is curve of speed and you can see this Mediolateral curve, which is a curve of wilson. So when we are combining this what we get is we get a four-inches equilateral Triangle which is connecting four inches from the condyles on either side and also to the central incisor Missile side, so we get a four-inch Equilateral so all sides are equal in dimension. That is four inches So that is known as Mansoom's curve and also we can say that The curve of occlusion in which cuspan incisal edges cuspan incisal edges Teaches or conforms to a segment of sphere of eight inches diameter So I was talking about four inches radius, but eight inches diameter of sphere With its center in the region of glabella so glabella, we know in the forehead between the frontal nasal segment So it becomes a eight-inch sphere or four-inch Equilateral triangle So this curve runs across the palatal and buckle cusps of maxillary molas So that's all about The curve of Wilson and curve of Mansoom last session we have covered curve of speed so curve of Wilson is medial lateral curve, which is touching the buckle and lingual cusps of posterior teeth and Curve of Mansoom is a compilation of curve of speed and curve of Wilson which forms a four inch equilateral triangle or a sphere with eight inch Diameter with a Common point at glabella so all these Compensatory curves are helping us to achieve a perfect balance to occlusion So I'll come up with a new session on dentistry and more. Thank you