Term
| Name the 4 major bones associated with the TMJ. |
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Definition
Mandible
Maxilla
Zygomatic Bone
Temporal Bone |
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Term
| This bone consists of the body, rami, condyles, neck, coronoid process, notch, and angle. |
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Definition
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Term
| This bone is known as the upper jaw. |
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Definition
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Term
| What 2 bones help form the zygomatic arch? |
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Definition
| Zygomatic and Temporal Bones |
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Term
| This bone consists of the mandibular fossa, articular eminence, and zygomatic arch. |
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Definition
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Term
| An articular disc divides the TMJ into how many joint spaces? |
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Definition
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Term
| Which TMJ joint is a hinge joint formed by the mandibular condyle (covered by dense fibrous connective tissue) and the inferior disc surface. |
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Definition
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Term
| Which TMJ joint is a gliding joint formed by the articular eminence (covered by fibrocartilage) and the superior disc surface. |
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Definition
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Term
| Made of fibrocartilage and dense fibrous connective tissue; increases congruency, cushions surfaces during compression and is a layer of protective between the condyle and articular eminence. |
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Definition
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Term
| Does the intra-articular disc move with the condyle? |
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Definition
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Term
| Name the divisions of the intra-articular disc. |
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Definition
Posterior
Intermediate
Anterior |
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Term
| This division of the disk is the thickest, innervated and vascularized, sits between the condyle and the mandibular fossa. |
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Definition
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Term
| This division of the disk is the thinnest, has no innervation, weight bearing surface, sits between the condyle and temporal bone. |
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Definition
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Term
| Are tissues that take on much mechanical compression forces innervated or not? |
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Definition
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Term
| This division of the disk is of intermediate thickness, is largely innervated and vascularized. |
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Definition
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Term
| Name the 2 attachments of hte intra-articular disc. |
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Definition
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Term
| This attachment is attached to the bone, joint capsule, and tendon of lateral pterygoid muscle (superior head) |
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Definition
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Term
| This attachment is attached to the bilaminar retrodiscal tissue |
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Definition
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Term
| Attaches posteriorly to the temporal bone |
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Definition
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Term
| Attaches to the neck of the mandibular condyle |
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Definition
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Term
| Name the 2 unique fibro-elastic bilaminar retrodiscal tissues |
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Definition
| Superior and inferior lamina |
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Term
| Designed as a posterior anchor to limit ANTERIOR translation of the disc. |
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Definition
| Unique Fibro-Elastic Bilaminar Retrodiscal Tissues |
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Term
| Attached superiorly to the temporal bone, inferiorly to the neck of the condyle. Is highly vascularized and innervated. |
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Definition
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Term
| Loose ____, and tight ____ (for lateral stability with chewing). Joint Capsule |
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Definition
Ant/Post
Med/Lat Deviations |
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Term
| A lateral ligament for stability of the joint and disc. |
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Definition
| Temporomandibular Ligament |
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Term
| Name 2 ligaments that help attach mandible to cranium and limit extreme TMJ movements. |
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Definition
Sphenomandibular
Stylomandibular |
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Term
| Name the 3 ligaments of the TMJ |
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Definition
Temporomandibular
Sphenomandibular
Stylomandibular |
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Term
| Name all of the TMJ motions. |
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Definition
Depression/Elevation
Protrusion/Retrusion
Lateral Deviation |
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Term
| Depression of the TMJ refers to opening or closing? |
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Definition
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Term
| Elevation of the TMJ refers to opening or closing? |
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Definition
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Term
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Definition
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Term
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Definition
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Term
| Movement in lower joint space; the mandibular condyles rolls on the inferior surface of the disc; this occurs during first to 50% of opening. |
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Definition
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Term
| Movement in the upper joint space, the condyle AND disc slide together; added rotation during the last 50% for full opening. |
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Definition
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Term
| What is the first half of TMJ movement? |
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Definition
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Term
| For TMJ elevation, what occurs first, rotation or translation? |
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Definition
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Term
| For TMJ protrusion and retrusion, the movement is all __ of condyle-disc complex |
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Definition
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Term
| For TMJ lateral deviation, the movements is mostly ___ of condyle-disc complex with some multiplane rotation (mostly horizontal plane) |
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Definition
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Term
| Name the muscles that contribute to TMJ depression. |
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Definition
Lateral Pterygoid (inferior head)
Suprahyoids |
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Term
| Name the muscles that contribute to elevation of the TMJ |
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Definition
Temporalis
Masseter
Medial Pterygoid |
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Term
| Name the muscles that contribute to protrusion of the TMJ |
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Definition
Lateral Pterygoids
Masseter
Medial Pterygoid |
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Term
| Name the muscles that contribute to Retrusion of the TMJ |
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Definition
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Term
| Name the muscles that contribute to lateral deviation of the TMJ |
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Definition
Pterygoids (contra)
Temporalis/Masseter (ipsi) |
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Term
| Severe anterior displacement of the disc prevents forward and downward motion of the mandible. Posterior bilaminar can lose elasticity. Anterior muscle spasm/tone, lateral pterygoid draws it forward. |
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Definition
| Hypomobile Joint and Disk |
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Term
| Opening and closing click |
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Definition
| Hypermobile Joint and Disk |
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Term
| Know procedures/techniques for TMJ AROM measurement and normal/avg AROM for motions that we measured in lab |
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Definition
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Term
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Definition
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