Dental Terms, from pop quiz, review quiz

What is the difference between the balancing side and the working side during mastication?

The working side is in contact, and the balancing side is not.

What kind of stone is used for secondary (master) casts for dentures?

Dental Stone (or Lab Stone)

Why is Dental Stone specifically used for dental casts?

Because it is more malleable and conducive to carving, allowing for fine details and precise work.

Where is the hamular notch located?

Distal to the maxillary tuberosity.

Describe Angle's Class 1 in terms of tooth position.

The mesiobuccal cusp of the maxillary first molar occludes with the buccal groove of the mandibular first molar.

During what step of denture fabrication is beading and boxing used?

During the pouring of the master model.

What are the water-powder ratios for dental stone and die stone?

Dental Stone: 100g powder to 30ml water; Die Stone: 100g powder to 22ml water.

What is the name given to the process whereby the body dissolves tissue that is no longer needed?

Resorption.

Name the three zones of the buccal or lingual portion of a posterior crown.

Occlusal, Middle, Cervical.

Which of Angle's classifications could be described as prognathic?

Class 3.

How many lobes does a mandibular first molar develop from?

5 lobes (corresponding to the number of cusps).

What is the name for a space between two teeth that is not caused by an extraction?

Diastema.

Provide the universal numbers of all teeth in the complete adult dentition which do not have distal contacts.

1, 16, 17, 32.

Name the bony structure which supports the teeth.

Alveolar Process.

Name the convexity on the cervical third of the lingual surface of a central incisor.

Cingulum.

Name the concavity on the lingual surface of a central incisor.

Lingual Fossa.

How can we tell if a poured model has reached its initial set?

It becomes warm due to the exothermic reaction.

Complete this word, which describes an impression material: Poly...

Polyvinylsiloxane.

What term do we use to describe the amount of opening between the upper and lower arches?

Vertical Dimension.

What are the anatomical features used to determine Angle's classes of occlusion?

• The position of the mesiobuccal cusp of the maxillary first molar in relation to the buccal groove of the mandibular first molar

• the position of the mandible

How is Angle's Class I occlusion defined?

The mesiobuccal cusp of the maxillary first molar occludes with the buccal groove of the mandibular first molar.

How is Angle's Class II occlusion defined?

In Angle's Class II occlusion, the mesiobuccal cusp of the maxillary first molar occludes mesial to the buccal groove of the mandibular first molar

How is Angle's Class III occlusion defined?

In Angle's Class III occlusion, the mesio-buccal cusp of the maxillary first molar occludes distal to the buccal groove of the mandibular first molar

What does the term 'retrognathic' refer to?

the abnormally retruded position of the mandible, characteristic of Angle's Class II occlusion.

What does the term 'prognathic' refer to?

The term 'prognathic' refers to the abnormally forward position of the mandible, characteristic of Angle's Class III occlusion.

What is lateral excursion?

Lateral excursion refers to the side-to-side movement of the mandible during mastication.

What is the main cause of anterior crowding?

the eruption of the third molars, which causes mesial pressure and displaces the anterior teeth.

Which teeth are most likely affected by anterior crowding, and why?

The incisors are most likely to be rotated out of position due to anterior crowding, as they have shallow, single roots that make them more susceptible to displacement.

What factors contribute to malocclusion?

Early loss of teeth

• genetics

• skeletal influences

• growth patterns

• habits such as thumb-sucking or tongue thrusting.

What can misaligned teeth lead to?

difficulty in chewing and speaking, increase in tooth decay and gum disease, and jaw pain and headaches.

In the box below, list the various treatments and appliances available for the correction of malocclusion.

• Braces

• Clear Aligners

• Retainers

• Palatal Expanders

• Surgery

• Tooth Removal

WHAT IS CENTRIC OCCLUSION

The occlusion that the patient makes when they fit their teeth together in maximum intercuspation.

WHAT IS CENTRIC RELATION

describes the jaw relationship between the maxilla and mandible when the mandible is in a retruded position

What is the purpose of a removable die model?

In order to isolate the teeth to work around the axial surfaces.

In a removable die model why must the bottom of the model be perfectly flat

The bottom of the model must be perfectly so that the pins are perfectly parallel.

In a removable die model how must the model be held when pressing down on the pindex machine?

The model must be held with your fingers adjacent to the unit you are pindexing.

in a removable die model Describe the correct position of the dual pins.  (2 things)

The thicker pin faces the buccal surface and the thinner pin faces the labial/lingual surface.

In a removable die model Describe the correct procedure for gluing in the pin.

Place glue on the first two stops of the bottom of the pin to prevent glue from overflowing. When placing the pin to the hole it must be in complete contact with the glue, with no spaces. Also make sure that the thicker pin is facing the buccal surface and the thinner pin is facing the lingual/labial surface.

in a removable die model What is the purpose of the green rubber caps?

Is to make the pins more accessible.

in a removable die model What does the technician do before immersing the model into the base mold?  (2 things)

She applies a separating agent onto the model and carefully applies a layer of a base stone onto the model.

in a removable die model What would happen if the base stone rose above the separation line?

The model and the base stone won't remove smoothly.

In the removable die model video, why is the model so easy to extract?  (2 things)

Because there is a uniform path of insertion and extraction.

what is a die?

A model of a prepared tooth