Removable Prosthodontics Practice Flashcards

Comprehensive vocabulary flashcards generated from the Removable Prosthodontics lecture notes covering Complete Dentures, Impression Materials, Occlusal Schemes, Removable Partial Dentures (RPD), and Overdentures.

Retention (in Complete Dentures)

The ability of the denture to resist movement away from the tissue, especially in a vertical direction.

Stability (in Complete Dentures)

The ability of the denture to resist horizontal movement.

Support (in Complete Dentures)

The ability of the denture to resist tissue-ward movement.

Mandibular to Maxillary Resorption Ratio

The rate at which the mandible resorbs compared to the maxilla after tooth loss, which is $4:1$.

Vermillion border

Transitional epithelium between mucous membrane of lip and skin, which disappears in the upper lip and gets accentuated in the lower lip after tooth loss.

Philtrum

Diamond shape area between base of the nose and the upper lip, which becomes flat after tooth loss.

Nasolabial angle

Angle between the columella of the nose and the philtrum, normal value is $90^\bullet$.

Ala tragus line [camper's line]

An imaginary line running from the inferior border of the ala of the nose to the superior border of the tragus of the ear, used to establish the posterior occlusal plane.

Interpupillary line

Imaginary line between the 2 pupils, used to establish the anterior occlusal plane.

Surfaces of a complete denture

Diagram showing the Impression surface (fitting surface), Polished surface (buccal/lingual surfaces), and Occlusal surface (contacts antagonist).

Incisive papilla

Fibrous connective tissue over the incisive foramen immediately behind the central incisors; must be relieved to avoid compression on the nerve bundle which can lead to a burning sensation.

Hamular notch

Distal limit of the buccal vestibule located between the maxillary tuberosity and hamulus of medial pterygoid muscle.

Buccal shelf area

Primary stress bearing area of the mandible consisting of cortical bone, bounded medially by the crest of the ridge, laterally by the external oblique ridge, and distally by the retromolar pad.

Ankyloglossia

High lingual frenum attachment, commonly known as tongue tie.

Philosophical patient (HOUSE classification)

The ideal patient attitude category: easy going, cooperative, optimistic, leading to a good prognosis.

Type 1 Gypsum (Impression plaster)

Highly fluid plaster when first mixed used for complete denture patients, requiring special trays and indicated for patients with flabby ridges.

Type 2 Gypsum (Dental plaster)

Beta hemihydrate consisting of white irregular particles, primarily used to make study models.

Type 3 Gypsum (Dental stone)

Alpha hemihydrate consisting of yellow uniform particles, used for master and diagnostic casts.

Syneresis

Water evaporation that occurs when an impression is placed in air, causing the impression to shrink.

Imbibition

Water absorption that occurs when an impression is placed in water, causing the impression to expand.

Border molding

Recording the depth and width of the functioning sulcus using green stick compound (Type 1 low fusing impression compound) placed on a special tray.

Posterior palatal seal area

Soft tissue area along the junction of the hard and soft palate on which pressure within physiological limits can be applied by the denture to aid in retention.

Arcon articulator

Articulator where condylar elements are located on the lower member and condylar guides are on the upper member.

Non-Arcon articulator

Articulator where condylar elements are located on the upper member and condylar guides are on the lower member.

Bennett shift

Bodily shift of the mandible to the working side ($1\text{--}2\text{ mm}$).

Bennett angle

The angle formed between the sagittal plane and the path of the advancing condyle during lateral movement as viewed in the horizontal plane.

BULL rule

Selective grinding guideline for the working side: reduce inner inclines of Buccal Upper and Lingual Lower cusps.

LUBL rule

Selective grinding guideline for the non-working side: reduce inner inclines of Lingual Upper and Buccal Lower cusps.

Newton's classification

Classification of denture stomatitis into Type 1 (pinpoint hyperemic lesions), Type 2 (generalized diffuse erythema), and Type 3 (inflammatory papillary hyperplasia).

Combination syndrome

Condition caused by an upper complete denture opposing a lower distal extension RPD, resulting in premaxillary bone loss, tuberosity overgrowth, palatal papillary hyperplasia, lower anterior extrusion, and loss of OVD.

Kennedy Class I

Bilateral edentulous area located posterior to remaining natural teeth.

Kennedy Class II

Unilateral edentulous area located posterior to remaining natural teeth.

Kennedy Class III

Unilateral edentulous area between natural teeth located anterior and posterior to it.

Kennedy Class IV

Single bilateral edentulous area (crossing the midline) located anterior to remaining natural teeth.

Fulcrum line

An imaginary line passing through the most posterior clasp assembly around which the denture tends to rotate during function.

Guiding planes

Vertically parallel proximal surfaces on abutment teeth used to direct the prosthesis along a single path of insertion and removal.

Survey line

Line drawn on a cast by a surveyor indicating the maximum convexity/height of contour of the tooth and alveolar bone in relation to a specific path of insertion.

RPI system

Clasp assembly consisting of a mesial Rest, distal guiding Plate, and I-bar retentive arm.

RPA system

Clasp assembly consisting of a mesial Rest, distal guiding Plate, and Akers (circumferential) retentive clasp arm.

Overdenture

A removable prosthesis that rests over remaining natural roots, prepared teeth, or dental implants.