1. Types
   1. Bilateral balanced occlusion
      1. It is balance in working, balancing & protrusive contacts
   2. Mutually protected occlusion (canine guided)
   3. Unilaterally balanced occlusion (Group function)
2. Types of Occlusal schemes
   1. Linear occlusion
   2. Lingualised occlusion
      1. Given by : Gysi Payne: later popularized it
      2. Articulates maxillary lingual cups with mandibular occlusal surfaces in centric working & non-working mandibular positions
      3. Indications : ▪︎CD fabrication ▪︎ When esthetics are important ▪︎When CD opposes a RPD
   3. Neutrocentric occlusion
      1. Given by : DeVan
      2. States that anteroposterior plane of occlusion should be parallel to the denture
         1. Shouldn't be dictated by horizontal condylar guidance
   4. Monoplane occlusion
   5. Balanced occlusion
      1. Bilateral, simultaneous, anterior, posterior occlusal contact of teeth in centric & eccentric positions
         1. Achieved by arranging teeth in such a way that opposing dentures have 3 point contact in all centric & eccentric movts
      2. Advantages
         1. Enhances stability of denture
         2. Provides a Lever Balance
         3. Anatomic teeth are used : to decrease the vertical force on the ridges
         4. Good esthetics
      3. Disadvantages
         1. Precise reproducible records are needed
         2. Not suitable for resorted ridges
         3. Requirement of specialized equipments & operator expertise
   6. Spherical occlusion
   7. Organic occlusion
   8. Physiological generated occlusion
3. Factors affecting Balanced Occlusion (Hanau's Quint)
   1. Condylar guidance
   2. Incisal guidance
      1. 2nd factor of occlusion
      2. It's in control of a dentist & can be altered according to need
      3. It should be kept as shallow as possible for stability of dentures.
      4. Should be as flat (close to 0 degrees)
      5. Has significant effect on esthetics & appearance
   3. Plane of orientation
   4. Compensatory curves
      1. Curve of spee
         1. Anteroposterior curve of occlusal surface of natural teeth
            1. Passes through tip of canine & buccal cusp tips of posterior teeth
      2. Wilson curve
         1. Curve formed by joining the cusps of posterior teeth within the jaw when viewed it in frontal plane
            1. Mandibular arch - Concave Maxillary arch - Convex
      3. Curve of Monson
         1. Incisal edges of each anterior & cusp tips of posteriors in each arch touches & forms a sphere of 8inches diameter with the centre being Glabella
            1. Mandibular arch - Concave Maxillary arch - Convex
      4. Pleasure curve
   5. Cuspal angulation
      1. Teeth can be
         1. Anatomic
         2. Semi-anatomic
         3. Non-anatomic/cuspless teeth/ 0 degree
            1. Balanced occlusion is achieved by : Balancing ramps & compensatory curves
   6. Tooth alignment
4. Theories of Occlusion
   1. Bonwill's equilateral triangle
      1. Distance btw the condyles is equal to the distance btw condyle & midpoint of mandibular incisors (incisal point)
      2. Equilateral triangle is formed btw 2 condyles & incisal point
      3. Dimension of equilateral triangle is 4 inches
   2. Spherical theory
      1. Given by : Monson
      2. Lower teeth move over the surface of upper teeth as over a surface of sphere with diameter of 8 inches & center being the Glabella
5. Selective grinding
   1. BULL rule (Buccal Upper Lower Lingual)
      1. Described by : Dr. Clyde H Schuyler
      2. Adjustment is made to inclined planes of upper buccal cusps & lower lingual cusps
      3. Purpose : in order to preserve centric stops on cusps which are normally in occlusion
   2. Occlusal discrepancies in CD are best detected by : remounting on semi-adjustible articulator