Some common prosthodontic terms and there defination

ANTERIOR GUIDANCE Also known as: -	The influence of the contacting surfaces of teeth on mandibular movement
ARCON Also known as:- ARTICULATED CONDYLE	Where the condyle part is attached to the lower member of the articulator. NON-ARCON is where the condylar part is attached to the upper member of the articulator.
ARTICULATION Also known as: -	A relationship of the upper & lower teeth which exists during mandibular movement from one occlusion to another. It is a dynamic relationship & it may be balanced or unbalanced.
BALANCED ARTICULATION Also known as: - FULLY BALANCED OCCLUSION BALANCED DYNAMIC OCCLUSION	A multi-point contact relationship of the opposing teeth in which they guide smoothly over each other during mandibular movement without causing dislodgement of the dentures.
BALANCED OCCLUSION Also known as:- BILATERALLY BALANCED OCCLUSION BALANCED STATIC OCCLUSION (Dentures)	A multi-point contact relationship of opposing teeth in static contact.
BENNETT ANGLE Also known as: - PROGRESSIVE SIDE SHIFT	The angle obtained after the non-working side condyle has moved anteriorly & medially, relative to the sagittal plane. The flatter the cusp the greater the side shift.
BENNETT SHIFT Also known as: - BENNETT MOVEMENT IMMEDIATE SIDE SHIFT MANDIBULAR SIDE SHIFT	The bodily lateral movement of the mandible towards the working side during lateral excursions (approx. 0.3mm)
BRUXISM Also known as: - PARAFUNCTIONAL ACTIVITY	Tooth contacting habits, which are not necessary in order to execute the normal physiological oral function. I.e. clenching & grinding.
CANINE GUIDANCE Also known as: - CANINE PROTECTED OCCLUSION	The part of the anterior guidance that often occurs on lateral excursion, where the mandibular movement is dictated by mandibular canine-maxillary canine contacts
CENTRIC OCCLUSION (CO) Also known as: - INTERCUSPAL POSITION (ICP) HABITUAL OCCLUSION INTERCUSPATION POSITION MAXIMUM INTERCUSPATION HABITUAL CENTRIC AQUIRED CENTRIC BITE OF ACCOMMODATION	The position of the mandible when the maxillary & mandibular teeth are at their most interdigitated. I.e. Maximum intercuspation of the teeth irrespective of the condyle to fossa relationship. This is only evident when an adequate number of occluding teeth are present.
CENTRIC RELATED OCCLUSION Also known as: -	When CO & CRO are co-incidental. This the ideal that we aim for in an equilibrated mouth – simultaneous contact of all the teeth with the condyles in centric relation – see reorganized occlusion
CENTRIC RELATION OCCLUSION (CRO) Also known as: - RETRUDED CONTACT POSITION (RCP)	The position of the mandible determined by tooth to tooth contact when the mandible closes in CR.
CENTRIC RELATIONSHIP (CR) Also known as: - TERMINAL HINGE AXIS TERMINAL HINGE RELATION RETRUDED ARCH OF CLOSURE RETRUDED AXIS POSITION (RAP) LIGAMENTOUS POSITION HINGE AXIS	The most retruded position of the mandible relative to the maxilla determined by the TMJ with the teeth separated I.e. Condyle to fossa relationship without tooth contact. Condyles in the upper most position in fossa.
CENTRIC STOP Also known as: - CENTRIC STOP POSITION	Cusp tip used to achieve contact.
CONDYLE Also known as: -	The rounded surface at the distal extremity of the ramus of the mandible, which fits into the Glenoid fossa to form the tempromandibular joint.
CONDYLAR ANGLE Also known as: - CONDYLE PATH	The angle given by the downward & forward slope of the glenoid fossa. “S” shaped in life, this represented as a straight line in average value & semi-adjustable articulators.
CONDYLAR GUIDANCE Also known as:- ANGLE OF EMINENCIA	The mechanism on an articulator which reproduces the paths down which the condyles travel on protrusion of the mandible.
CONFORMATIVE Also known as: -	When restorations are fabricated to the existing jaw relationship.
CROSSOVER INTERFERENCES Also known as: -	Once the canine has moved into a position that is labial to the upper canine & the tips have crossed over, the mandible has then entered into the crossover position.
DISCLUSION Also known as: - DISCLUDING	The separation of teeth during excursive movements e.g. on protrusion, as the mandibular anterior teeth slide over the palatal surfaces of the maxillary teeth the posterior teeth often disclude.
FOSSAE Also known as: - FOSSA	A depression.
FREEWAY SPACE Also known as: - INTEROCCLUSAL CLEARANCE INTEROCCLUSAL SPACE	The space between the occlusal surfaces of the maxillary & mandibular teeth when in the rest position. It is usually measured in the premolar region.
FUNCTIONAL CUSP Also known as: -	The palatal cusps of maxillary teeth & buccal cusps of mandibular teeth, which occlude with opposing fossae.
GROUP FUNCTION Also known as: - SHARED FUNCTION	Guidance of the mandible when a number of posterior teeth are in contact in lateral and protrusive excursion.
INTERFERENCE Also known as: - OCCLUSAL INTERFERENCE DEFLECTIVE CONTACTS	An uneven, early contact arising on one or more teeth during a excursive movement causing disclusion of guiding teeth
INTERCONDYLER DISTANCE Also known as: -	The distance between the condylar heads at any point.
LATERAL EXCURSION Also known as: - LATRUSION	Sideways movement of the mandible.
LINGUALIZED OCCLUSION (LO) Also known as: - PALATALISED OCCLUSION	It is where only the maxillary posterior palatal cusps occlude with shallow mandibular central fossae.
LONG CENTRIC Also known as: - FREEDOM IN CENTRIC OCCLUSION	Freedom of the mandible to slide forward at the same vertical dimension.
MALOCCLUSION Also known as: -	A deviation from normal occlusion of one or more teeth in the dental arches.
MUTUALLY PROTECTED OCCLUSION (MPO) Also known as: -	That in centric relation there is only posterior tooth contact. The maxillary palatal cusps & mandibular buccal cusps should occlude with there opposing occlusal fossae. Thus, anterior teeth positively disclude the posterior teeth in all excentric excursions, protecting the posterior teeth (of implants) from harmful lateral forces.
NON-WORKING CONDYLE Also known as: - ORBITING CONDYLE	The condyle on the non-working side, which undergoes a mainly translatory movement during function on the working side.
NON-WORKING MOVEMENT Also known as: - NON-WORKING SIDE NON-FUNCTIONING BALANCING CONTRALATERAL ORBITING SIDE	The side the mandible is moving away from.
NON-WORKING SIDE INTERENCES Also known as: -	Is a posterior contact on the non-working side which interferes with ideal anterior guidance, thus when the mandible moves in one direction, if a tooth on the opposite side interferes with ideal anterior guidance, this is classed as a non-working side interference.
PANTOGRAPHIC READING Also known as: -	A reading from a device that accurately traces mandibular movements with two main component parts similar to two face bows; one is attached to the maxillary arch & one to the mandibular arch. On being transferred to a fully adjustable articulator, the resulting three-dimensional tracing of border movements can be used to programme the articulator to reproduce mandibular movement with a high degree of accuracy.
PATH OF CLOSURE Also known as: - LINE OF CLOSURE	The path taken from rest to occlusal positions. It is usually traced at the incisal edges of the lower central incisors.
PREMATURE CONTACT Also known as: - CLOSURE INTERFERENCE FIRST POINT OF CONTACT	An uneven contact arising only on one tooth as the mandible closes to centric occlusion.
PROPRIOCEPTIVE Also known as: -	The sensory perception of the occlusal load due to the periodontal ligament that attaches the teeth to the alveolus.
PROTRUSIVE EXCURSION Also known as: - PROTRUSION	Forward movement of the mandible.
REORGANISED Also known as: -	When restorations are fabricated to the patients jaw position in centric relation. Deflective contacts & occlusal interference’s are removed, allowing the muscles of mastication to move the mandible free from proprioceptive influence of these contacts.
REST POSITION Also known as: - POSTURAL REST POSITION POSTURAL POSITION	The position the mandible adopts when standing or sitting upright, when the musculature is at rest. Determined by muscle tone & tension of surrounding tissues.
SAGITAL PLANE Also known as: -	The longitudinal vertical plane that divides the mouth into two halves (left & right)
THE ALERT FEEDING POSITION Also known as: -	The head is tilted 30 degrees forward. The aim is to have no deflective contacts on the maxillary anterior teeth as the mandible closes in its acquired position.
WORKING CONDYLE Also known as: -	The condyle on the non-working side, which undergoes a mainly rotational movement during function on the working side.
WORKING MOVEMENT Also known as: - WORKING SIDE FUNCTIONING SIDE ROTATING SIDE	The side the mandible is moving to during excursive movement
WORKING SIDE INTERFERENCES Also known as: -	The term working side is still most commonly used to describe the side to which the mandible is moving during a lateral excursion. A working side interference is a posterior contact on the working side, which interferes with the ideal anterior guidance.