Centric relation, terminal hinge axis position and retruded contact position (RCP) Centric relation describes the jaw relationship between the maxilla and mandible when the mandible is in a retruded position. Differing definitions of centric relation have focused on slightly different positions of the condyle in the glenoid fossa and some on the relationship of the head of the condyle to the interarticular disc. These are rather academic arguments as clinically the position of the condyle cannot be visualized or confirmed without complex equipment. A more pragmatic and practical definition was proposed by Christensen in 2004 which conforms to most dentists' clinical practice. He described centric relation as the ‘most comfortable posterior location of the mandible when it is bilaterally manipulated gently backward and upward into a retrusive position’. When this is done the mandible opens and closes on an arc of curvature around an imaginary axis drawn through the centre of the head of both condyles; this imaginary axis is termed the terminal hinge axis. The definition of CR is evolving even as we speak and considering its volatile nature, each person have their own understanding of the concept.
Yes that is not an anterior definition as discussed in this video. Also a posterior/retruded definition makes no sense biomechanically - the condyles logically articulate forward against the eminences, that is how bite force is distributed.
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Well explained..thanku so much sir🙏
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Most confusing part is well explained.......
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Helpful lecture sir....
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I disagree - this anterior definition is in fact *not* with a most retruded position of the mandible. This follows logically.
Centric relation, terminal hinge axis position and retruded contact position (RCP)
Centric relation describes the jaw relationship between the maxilla and mandible when the mandible is in a retruded position. Differing definitions of centric relation have focused on slightly different positions of the condyle in the glenoid fossa and some on the relationship of the head of the condyle to the interarticular disc. These are rather academic arguments as clinically the position of the condyle cannot be visualized or confirmed without complex equipment. A more pragmatic and practical definition was proposed by Christensen in 2004 which conforms to most dentists' clinical practice. He described centric relation as the ‘most comfortable posterior location of the mandible when it is bilaterally manipulated gently backward and upward into a retrusive position’. When this is done the mandible opens and closes on an arc of curvature around an imaginary axis drawn through the centre of the head of both condyles; this imaginary axis is termed the terminal hinge axis. The definition of CR is evolving even as we speak and considering its volatile nature, each person have their own understanding of the concept.
Yes that is not an anterior definition as discussed in this video. Also a posterior/retruded definition makes no sense biomechanically - the condyles logically articulate forward against the eminences, that is how bite force is distributed.
I think he meant the most retruded unstrained position
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Thanks a lot doctor 🙏
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Well explained make more videos sir, thank you for this video
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