PIERCE COLLEGE SHEILA NORTON RDH
DENTAL HYGIENE INSTRUCTOR
INTRODUCTION TO RESTORATIVE DENTISTRY I
Study and demonstrate dental assisting skills and duties. Understand the
basic physical and mechanical properties of dental materials.
Credits = 2
Lecture = 1 hour
Lab = 2 hours
CLASS TIME AND INSTRUCTORS:
Lecture: 1-1:50 Sheila Norton RDH BS
Lab: 2-4pm Sheila Norton RDH BS and Debbie Almario RDH BS
PA lab: Monday’s 3-5 Wendy Walsh DDS
1Clinical Aspects of Dental Materials by Gladwin – Bagby (CADM)
2The Dental Assistant by Anderson, Pendleton, 7th Edition (DA)
3Dental Hygieneby Mosby
1Dental Instruments: A Pocket Guide by Linda R. Bartolomucci Boyd
During and upon successful completion of these courses, the student should
be able to and will be expected to:
1. Describe basic dental assisting skills as it applies to
2. Maintain a clear operating field for intraoral work using high
speed evacuation and retraction.
3. Compare and contrast the different types of impression
materials used in dentistry.
4. Have a working knowledge of mixing and taking an alginate impression
5. Identify and discuss the various properties of alginate
6. Identify and discuss the properties and types of gypsum
7. Demonstrate a working knowledge of a model trimmer and
8. Describe and demonstrate the procedures for taking an alginate
impression, pouring it in plaster, trimming, finishing and evaluating a
presentable study model.
9. Discuss the various properties of dental materials and their relationships
COURSE REQUIREMENTS, EVALUATION AND GRADING:
A. Course Evaluation Requirements DATE DUE
Midterm Exam October 26th
Completed Study Casts Dec 7th
Final Written Exam Dec 7th 1:00
Lab activities checklist Dec 7th 1:00
B. Course Evaluation Point Distribution:
Attendance and partisipation 10%
Lab and Clinic maitanance 10%
Midterm Exam 20%
Lab Activities 15%
Study Casts 15%
Final Exam 30%
C. Required Lab Activities
The following is a list of practice activities and observations to be
completed by the student. Additional practice activities may be assigned
* Operator, Assistant, and Patient positions
* Instrument transfer
* Maintain operating field, oral evacuation
* Manipulation of impression materials
* Taking alginate impressions and bite registrations
* Pouring alginate impressions
* Trimming study models
Date Unit Topic Pre-reading
September 21 Unit 1-lecture *Intro DH 107 DA 273-290
*Introduction to dental Mosby DH 115-127
assisting and four handed
Pierce 9/21 Lab *Check out “restorative mini
PA labs * Add mirror, explorer,
Monday’s locking cotton pliers
9/24 *prepare kit for sterilization
September 28 Unit 2 lecture *Maintaining an operating DA 291-300
9/28 Lab *Demo by instructors
PA 10/1 *four handed dentistry
practice activity (work in
groups of 4)
October 5 Unit 3 lecture *Classification of prosthetic DA 361-383
dental materials CADM 109-126,
271-273 & 339-342
10/5 Lab *Identification and mixing
PA 10/15 various dental materials
October 12 NO SCHOOL
October 19 Unit 4 lecture *Alginate impression material DA 349-364
Unit 5 lecture *Taking alginate impressions CADM 309-316
10/19 Lab *Mix and take alginate
PA 10/22 impression on dentoform
October 26th Unit 6 lecture *Disinfecting of impressions DA 372 & 360
Unit 7 lecture *taking a bite registration handbook
*MIDTERM following lecture
10/26 Lab *Taking alginate impressions
and bite registration on
PA 1 student partner
10/29 *Disinfect and store for
pouring next week
Date Unit Topic Pre-reading
November 2 Unit 8 lecture *Gypsum materials DA 392-406
Unit 9 lecture *Pouring alginate CADM 127-136
11/2 Lab *pouring demo
*taking impressions as
PA 11/5 needed
*Pour alginate impressions
*lab classroom set with
November 9 Unit 10 lecture *Trimming and finishing Module
study casts DA 401-406
Unit 11 lecture *Use of the model trimmer CADM 323-329 &
11/9 Lab *Trimming demo
PA 11/19 *begin trimming study casts
(no school **sign-up sheet 10 minutes
November 16 Unit 12 lecture *Properties of Dental CADM 33-45
11/16 Lab Trimming demo
PA 11/26 Trimming study casts
Nov 23 NO SCHOOL
November 30 Unit 12 cont. Student Presentations of CADM 33-45
Properties of Dental Materials Supplemental texts
11/30 Lab Trimming and finishing
PA 12/3 as models
December 7 *FINAL EXAM
*Turn in study casts with self
*Turn in lab activites sheet
Unit One Objectives: (Intro to dental assisting and four handed dentistry)
1.1 Explain the concept of the dental team and its relation
to dental care
1.2 Describe the principles of Four-handed and Six-handed dentistry.
1.3 Relate the five classifications of motion to the principle
of Four-handed dentistry.
1.4 Demonstrate how to properly adjust the operator’s, assistant’s,
and patient’s chair for optimum usage and comfort.
1.5 Describe and utilize the four zones of activity for either
a right handed or left handed operator.
1.6 Demonstrate an understanding of tray set-ups.
1.7 Describe the advantages and disadvantages of pre-set trays.
1.8 Define tray maps and explain their usage.
1.9 Explain what is meant by a color coding system.
Unit Two Objectives: (Maintaining an operating field)
2.1 Define, Spell, and use the terminology associated
with this topic.
2.2 Describe and demonstrate the considerations and methods for effective
2.3 Describe and demonstrate the considerations and uses of the air-
2.4 Demonstrate the correct grasps for the HVE.
2.5 Describe and demonstrate correct positioning and patient
considerations when utilizing the HVE.
2.6 Describe and demonstrate appropriate placement and uses for
the saliva ejector.
2.7 Describe the general criteria used to initiate
2.8 Demonstrate the two most common methods of instrument
transfer and explain situations where each could be used.
2.9 Describe and demonstrate the sequence of an instrument
Unit Three Objectives: (Classification of prosthetic dental materials)
3.1 Define, spell and use the terminology associated with dental
3.2 Describe the different classifications of dental impression
3.3 Describe the properties, manipulation, advantages, and
disadvantages of reversible hydrocolloid.
3.4 Identify the rigid impression materials used in dentistry and
when they are used.
3.5 Recognize the different types of elastomeric polymer
3.6 Discuss the composition, advantages and disadvantages for the
use of the following dental impression materials: polysulfide,
silicon condensation type, silicon addition type, and polyether.
Unit Four Objectives: (Alginate impression material)
4.1 List the uses and contraindications of alginate impression materials.
4.2 Define irreversible hydrocolloid and describe the
4.3 Define gelation time and explain how it can be adjusted.
4.4 Explain how the gel strength is affected by the mixing
and setting time.
4.5 List four properties of sols and gels.
4.6 Define dehydration, syneresis, and hysteresis.
Unit Five Objectives: (Taking alginate Impressions)
5.1 Identify ways to prepare your patient for alginate impressions.
5.2 Describe how to identify the proper tray and prepare the tray for taking an
5.3 Describe and demonstrate the manipulation of alginate materials.
5.4 Identify operator errors that affect setting time of alginate materials.
Unit Six Objectives: (Disinfecting impressions)
6.1 Identify the materials that can be immersed for disinfecting.
6.2 Identify the materials that can not be immersed for disinfection and
discribe the appropriate method.
6.3 List the appropriate solutions for disinfection.
Unit Seven Objectives: (Taking bite registrations)
7.1 Identify materials used for bite registrations.
7.2 Indicate when a bite registration should be taken.
7.3 Explain why a bite registration may be needed.
Unit Eight Objectives: (Gypsum materials)
8.1 Describe the chemistry of producing plaster and stone powder.
8.2 Explain the similarities and differences between plaster,
stone, and improved die stone.
8.3 Discuss the water/powder ratios for mixing plaster, stone, and
improved stone and the properties affected by this ratio.
8.4 Define setting time and know the factors which control
setting time. Describe the crystal formation.
8.5 Identify the conditions which influence setting expansion
and understand why it is important to limit expansion.
8.6 Know the difference between dry and wet strength and the
factors which affect the strength of the gypsum product.
8.7 Discuss the various gypsum products used in dentistry.
Unit Nine Objectives: (Pouing alginate impressions with gypsum)
9.1 Explain how to pour the occlusal portion of the models.
9.2 Discuss the different methods for pouring the base
9.3 Describe the difference in the consistancy of the gypsum used for the
occlusal portion of the model and the base.
9.4 Demonstrate the use of the vibrator for elimination of air bubbles.
Unit Ten Objectives: ( Trimming and finishing study models)
10.1 Describe the reasons for trimming and finishing study models.
10.2 Describe the methods for measuring and trimming maxillary
and mandibular models.
10.3 Accurately trim maxillary and mandibular study models.
10.4 Evaluate trimmed models for accuracy and esthetics.
10.5 Describe the procedures for finishing and polishing study models.
10.6 Evaluate study models to determine if any errors have been made.
Unit Eleven Objectives: (Use of the model trimmer)
11.1 Describe the use of the model trimmer including safety concerns.
11.2 Identify the hazards for using a model trimmer.
11.3 Discuss the process for starting the model trimmer.
11.4 Explain how to clean the model trimmer.
11.5 Differenciate between the two blades of the model trimmer.
Unit Twelve Objectives: (Properties of dental materials)
12.1 Define: percolation, thermal conductivity, sorption, absorption,
adsorption, surface tension, ductility, toughness, resilience.
12.2 Explain how the knowledge of the science of dental materials
will influence your responsibilities as a dental hygienist.
12.3 Discuss factors which alter the behavior of dental materials in the
12.4 Discuss stress and strain and the relationship of each of the
following: elastic modulus, proportional limit, yield strength,
and ultimate strength.