Denture Artificial Teeth Arrangement

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Questions and Answers

What is the purpose of drawing a line parallel to the frontal plane on the maxillary cast?

To establish the vertical position of the posterior teeth

To determine the positioning of the mandibular central incisors

To aid in the positioning of the upper central incisors (correct)

To bisect the incisive papilla

What is the role of the canine eminence line on the maxillary cast?

To determine the midline of the cast

To aid in the positioning of the upper central incisors

To establish the buccolingual position of the posterior teeth

To record the presence of the canine eminence (correct)

What is the purpose of the line that bisects the vertical height of the retromolar pad on the mandibular cast?

To determine the midline of the cast

To record the presence of the canine eminence

To establish the vertical position of the posterior teeth (correct)

To aid in the positioning of the mandibular central incisors

What should be the inclination of the long axis of the upper central incisors in the sagittal view?

5 degrees Signup and view all the answers

What is one of the purposes of arranging the anterior teeth?

To provide proper lip support Signup and view all the answers

What should be the position of the incisal edge of each upper central incisor in relation to the occlusal plane?

It should touch the occlusal plane Signup and view all the answers

What is the purpose of the line that follows the crest of the residual ridge on the mandibular cast?

To determine the buccolingual position of the posterior teeth Signup and view all the answers

What should be the relationship between the contact points of the right and left central incisors in the frontal view?

They should coincide with the midline of the cast Signup and view all the answers

What is the typical distance of the labial surfaces of the two central incisors from the center of the Incisive papilla?

8-10 mm Signup and view all the answers

In the frontal view, what is the relationship between the incisal edge of the upper lateral incisor and the occlusal plane?

1 mm above the occlusal plane Signup and view all the answers

What is the characteristic of the long axis of the upper lateral incisor in the sagittal view?

Slight labial inclination Signup and view all the answers

What is the role of the upper canine in the arch?

It represents the corner of the mouth and the turning point of the upper arch Signup and view all the answers

What is the characteristic of the long axis of the lower central incisor in the frontal view?

Vertical Signup and view all the answers

What is the amount of vertical overlap (overbite) of the lower central incisor in respect to the maxillary central incisor?

1 mm Signup and view all the answers

What is the definition of overjet?

The projection of the upper anterior teeth beyond their antagonist in a horizontal direction Signup and view all the answers

What is the characteristic of the cervical area of the upper lateral incisor in the horizontal view?

It is depressed more than the central incisors Signup and view all the answers

Study Notes

Guidelines for Artificial Teeth Arrangement

In maxillary cast, draw a line parallel to the frontal plane that touches the anterior margin of the incisive papilla to aid in positioning the upper central incisors.
The midline follows the mid-palatal suture and bisects the incisive papilla, perpendicular to the first line.
The canine eminence line is recorded on the cast when present.

Mandibular Cast

Draw a line parallel to the frontal plane that bisects the residual ridge to aid in positioning the mandibular central incisors.
A line follows the crest of the residual ridge from the canine point to the middle of the retromolar pad, aiding in the buccolingual position of the mandibular posterior teeth.
A line bisecting the vertical height of the retromolar pad aids in establishing the vertical position of the occlusal surfaces of the posterior teeth.

Arrangement of Anterior Teeth

Anterior teeth arrangement aims to provide proper lip support, permit satisfactory phonetics, and pleasing esthetics.
The teeth should be set in place where they originally grew.

Upper Anterior Teeth

Upper central incisors:
- In frontal view, the contact points between the right and left central incisors coincide with the mid-line of the cast.
- The incisal edge touches the occlusal plane, and the long axis is perpendicular to the plane in the sagittal view with a slight labial inclination (5 degrees).
- In the horizontal view, the two central incisors are placed to give the beginning of the curvatures of the arch, and the labial surfaces are 8-10 mm anterior to the center of the incisive papilla.
Upper lateral incisors:
- In frontal view, the incisal edge is 1 mm above the occlusal plane, and the long axis shows little distal inclination.
- In the sagittal view, the upper lateral incisor has a slight labial inclination (10 degrees).
- In the horizontal view, the cervical area is depressed more than the central incisors, and the distal edge is rotated lingually to form the arch curvature.
Upper canine:
- In frontal view, the tip of the canine touches the occlusal plane, and the long axis is perpendicular to the plane.
- In sagittal view, the long axis is vertical, and in the horizontal view, the cervical area is prominent.

Lower Anterior Teeth

Lower central incisors:
- In frontal view, the long axis is vertical, and the midline of the lower centrals coincides with the maxillary mid-line.
- In sagittal view, the lower central incisor has a slight labial inclination.
- The incisal edge has 1 mm of vertical overlap (overbite) and 1 mm of horizontal overlap (overjet) in respect to the maxillary central incisor.
Lower lateral incisors:
- In frontal view, the long axis is vertical to the occlusal plane.
- In sagittal view, the lower lateral incisor has a slight labial inclination, and the incisal edge has 1 mm of horizontal and vertical overlap in respect to the upper lateral incisor.

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Description

Learn about the placement of artificial teeth on a denture with specific objectives and guidelines for maxillary cast, including positioning of upper central incisors and midline.