D H 300B: ORAL BIOLOGY II

Foothill College Course Outline of Record

Foothill College Course Outline of Record
Heading	Value
Effective Term:	Fall 2026
Units:	3
Hours:	3 lecture per week (36 total per quarter)
Advisory:	Not open to students with credit in D H 52B.
Degree & Credit Status:	Degree-Applicable Credit Course
Foothill GE:	Non-GE
Transferable:	CSU
Grade Type:	Letter Grade Only
Repeatability:	Not Repeatable

Student Learning Outcomes

The student will be able to list the origin and formation of enamel.
The student will be able to trace the origin of mature oral tissues back to the trilaminar disc.

Description

Second in the series of oral biology courses for dental hygiene students. This course explores the embryologic development of the head, neck, teeth, and oral cavity, along with the histology of hard and soft oral tissues. Key areas of study include tooth development, periodontal tissues, oral mucous membranes and salivary glands, as well as developmental and structural variations within the oral cavity and teeth. Intended for students in the Dental Hygiene Baccalaureate Degree Program; enrollment is limited to students accepted in the program.

Course Objectives

The student will be able to:

Describe the structure and functions if the various components of a cell.
Identify and categorize the components and functions of the body's four basic tissues.
Describe the developmental stages of human growth from fertilization to birth.
Explain the mechanism involved in the development of the face and oral cavity.
Describe the types of facial and oral developmental anomalies.
Describe the stages of tooth development and the associated characteristic activities.
Analyze microscopic images of dental tissues and oral mucous membranes and describe their structural differences and functional significance.

Course Content

General histology
1. Cell
  1. Cell membrane
    1. Composition
    2. Components
    3. Function
  2. Nucleus
    1. Composition
    2. Components
    3. Function
  3. Organelles
    1. Composition
    2. Components
    3. Function
  4. Intercellular junctions
    1. Types
2. Extracellular materials
  1. Composition
  2. Components
  3. Function
Basic tissues of the body
1. Epithelium
  1. Classification
  2. Histology
  3. Turnover and repair
2. Basement membrane
  1. Composition
  2. Histology
3. Connective tissue
  1. Types
  2. Composition
  3. Histology
  4. Connective tissue repair
4. Cartilage
  1. Types
  2. Composition
  3. Histology
5. Bone
  1. Types
  2. Composition
  3. Histology
6. Muscle tissue
  1. Types
  2. Composition
  3. Histology
7. Nerve tissue
  1. Types
    1. Sympathetic nervous system
    2. Parasympathetic nervous system
  2. Composition
  3. Histology
Embryologic and fetal development
1. Fertilization
2. Morula
3. Blastocyst
4. Embryo
5. Bilaminar disc
6. Trilaminar
  1. Ectoderm
  2. Mesoderm
  3. Endoderm
  4. Neuroectoderm
7. Fetus
Developmental stages of the head, neck, and oral cavity
1. Frontonasal process
  1. Medial nasal process
  2. Lateral nasal process
2. Stomatodeum
3. Oropharyngeal membrane
4. Branchial arches
  1. Types
  2. Future development
  3. Branchial arch pouches
  4. Branchial arch grooves
5. Mandibular process
  1. Future development
6. Maxillary processes
  1. Future development
7. Frontal process
  1. Future development
8. Lateral palatine processes
  1. Future development
Facial and oral anomalies
1. Cleft lips
2. Cleft palates
3. Combined cleft lip and cleft palates
4. Other facial clefts
Tooth development
1. Initiation stage
2. Bud stage
3. Cap stage
4. Bell stage
  1. Enamel organ
    1. Outer enamel epithelium
    2. Inner enamel epithelium
    3. Stellate reticulum
    4. Stratum intermedium
  2. Dental papilla
  3. Dental sac
5. Apposition stage
  1. Odontogenesis
  2. Amelogenesis
6. Maturation stage
7. Root formation
  1. Hertwig's epithelial root sheath
8. Eruption
  1. Process
  2. Shedding of primary teeth
Microscopic features of tooth structures
1. Enamel
  1. Enamel rods
  2. Enamel lamellae
  3. Enamel tufts
2. Dentin
  1. Dentin tubules
  2. Tomes granular layer
  3. Acellular cementum
  4. Cellular cementum
  5. Sharpey's fibers
3. Pulpal zones
  1. Pulp stones
Development and histology of supporting structures and the oral mucosa
1. Gingiva
  1. Gingival layers
  2. Attached gingiva
  3. Free gingiva
  4. Junctional epithelium
2. Periodontal ligament
  1. Fibers of the periodontal ligament
  2. Sharpey's fibers
3. Alveolar bone
  1. Cribiform plate
  2. Lamina dura
4. Oral mucosa
  1. Masicatory mucosa
  2. Lining mucosa
  3. Specialized mucosa
5. Salivary glands
6. Tongue
  1. Types of papillae

Lab Content

Not applicable.

Special Facilities and/or Equipment

When taught online, on-going access to computer with email software and hardware; email address.

Method(s) of Evaluation

Methods of Evaluation may include but are not limited to the following:

Short answer and multiple choice quizzes
Histology identification evaluations
Midterm examination
Final examination

Method(s) of Instruction

Methods of Instruction may include but are not limited to the following:

Lecture
Discussion
Group projects

Representative Text(s) and Other Materials

Frehenbach and Popowics. Illustrated Dental Embryology, Histology, and Anatomy, 5th ed.. 2021.

Types and/or Examples of Required Reading, Writing, and Outside of Class Assignments

Weekly reading assignments
Chapter-specific assignments and review questions
Histology and embryology exercises, including labeling and structure identification

Discipline(s)

Dental Technology

Academic Catalog