RG Exam Review: Dental Technology History & Theory

the CENTRAL PART of the OCCLUSAL SURFACE

A triangular ridge descends from the cusp tip to:

DILUTED MOUTH WASH

Dental appliances sent from the laboratory to the dental office should be shipped in:

CAUSED by the IMPERFECT JOINING of the ENAMEL LOBES

Fissures are fault lines in the surface of a tooth:

BUCCAL to the CENTRAL GROOVE

From an occlusal view, the distal contact of the maxillary first molar is:

UPPER MOLARS

From the occlusal view, which tooth or teeth are generally expected to be "rhomboidal" in shape?

LOWER 1st MOLARS

From the occlusal view, which tooth or teeth are generally expected to have a trapezoid shaped outline?

WEEKS

How long can Hepatitis virus stay alive on a cast or appliance?

2

How many mandibular teeth would normally contact a maxillary central incisor in centric occlusion?

2

If using bleach as a disinfectant in the dental lab, you should dilute 1 part of bleach with___ parts of water.

50%

In general, it is recommend that well run commercial dental laboratories should hold direct labor costs at or below what percentage of sales volume?

DAILY

Laboratory work surfaces and exposed equipment should be cleaned:

ANTERIOR & POSTERIOR TEETH

Marginal ridges form the mesial and distal borders of:

SLIGHTLY MORE CERVICALLY than the MESIAL MARGINAL RIDGE

On most posterior teeth, the distal marginal ridge is situated:

PRIMARY MOLARS

Permanent premolars replace:

the SIDES of ALL TEETH

Proximal surfaces are:

GREEN SOAP

Pumice should be mixed with a disinfecting solution and:

DAILY

Pumice used on new appliances should be changed at least:

AFTER EACH USE

Pumice used on repairs or relines must be changed:

BLEACH

Sodium Hypochlorite is the chemical name for:

PROXIMAL

Surfaces of teeth facing adjoining teeth in the same arch are called:

CROWN & ROOT

The CEJ is the junction of the:

MAXILLARY RIGHT 3rd MOLAR

The Universal numbering system starts with tooth #1 as the:

ALUMINOUS OXIDE

The abrasive that should be used on ceramic metal where porcelain is to be bonded is:

DEPRESS the MANDIBLE

The action of the suprahyoid group of muscles is to:

BUCCAL & LINGUAL HALVES

The central groove divides occlusal surface into:

the PART of the CROWN VISIBLE ABOVE the GINGIVAL TISSUES.

The clinical crown is:

MAXILLARY 1st MOLAR

The cusp of Carabelli is located on the:

ANTERIOR-POSTERIOR

The fibers of the buccinator travel in what direction?

MAX. or MAND. 1st MOLARS

The first permanent teeth to erupt are:

CRANIAL

The frontal bone is a _____ bone.

H

The left maxillary cuspid of the primary teeth is designated what letter?

UNDER-DEVELOPED

The lingual cusps on the Mandibular second premolar are:

DIVIDES the LINGUAL of MOLAR into 2 CUSPS

The lingual developmental groove:

FACIAL

The maxilla is a _____ bone.

on the BUCCAL SURFACE of the MANDIBLE

The mental foramen is located:

MORE OCCLUSAL MESIALLY THAN DISTALLY

The mesial and distal contacts on the maxillary first premolar are located:

NEAR the JUNCTION of the INCISAL & MIDDLE THIRDS

The mesial contact on a maxillary central is:

SHORTER

The mesiofacial cusp arm on the maxillary canine compared to the distal facial cusp slope is:

DB & ML

The oblique ridge joins what two cusps?

MAXILLARY MOLARS

The oblique ridges are found on the:

ALVEOLAR BONE

The periodontal ligament surrounds the root of the tooth and connects it to the:

TRANSVERSE RIDGE

The place where two triangular ridges come together in the central groove is best called a:

CORPORATION

The structure of business that protects the individual from liability, but is subject to double taxation is the:

MANDIBULAR 1st MOLAR

The tooth that most commonly would be seen to have two buccal developmental grooves is the:

MANDIBULAR 2nd MOLAR

The tooth with four cusps of about equal size is the:

MANDIBULAR 2nd PREMOLAR

The tooth with one or two lingual cusps is the:

MAXILLARY CENTRAL

The tooth with the greatest mesial-distal width is the:

SOLE PROPRIETORSHIP

The type of business organization where the owner receives the profits and is personally liable for business debts is called a/an:

is an ELEVATION in the CENTRAL GROOVE WHERE 1 CUSP MEETS ANOTHER

Transverse ridge refers to a ridge that:

#17

Universal tooth #16 opposes tooth:

#7 & #8

Universal tooth #26 occludes with:

DISINFECTING

What is iodophor used for?

CONFIDENTIALITY

What is one of the advantages of a Sole Proprietorship?

EXFOLIATION

What is the term describing the loss of primary teeth to create space for the eruption of the permanent teeth?

DEVELOPMENTAL

What is the term that best describes grooves that separate teeth into lobes:

ANTI-MICROBIAL SOAP

What kind of cleaner should be used to ensure sterilization of hands?

CORPORATION

What type of business organization is recognized by law, as having an existence separate and apart from the owners?

SOLE PROPRIETORSHIP

What type of business organization is the easiest to set up?

ZYGOMATIC ARCH

Where does the masseter muscle attach to the skull?

SINTERED DIAMOND

Which abrasive is recommended for the general shaping of fired porcelains?

CUSPID

Which anterior has a cusp tip?

BUCCINATOR

Which muscle is NOT a muscle of mastication?

MAXILLARY 1st

Which premolar commonly has a bifurcated root?