DENA 1080 REVIEW CHPT 8

Study of prenatal development before birth

Embryology

Three primary embryonic layers

Ectoderm, Mesoderm, Endoderm

Tapered end of a root tip

Apex

Other term for bud stage

Initiation

Other term for cap stage

Proliferation

Permanent teeth that replace primary teeth

Succedaneous teeth

Primitive mouth of the embryo

Stomodeum

Two major categories influencing dental development

Genetic and Environmental

Three stages in the growth period

Bud, Cap, Bell

Process of laying down new bone

Bone deposition

Cells that form the pulp

Fibroblasts

Fault along a developmental groove

Fissure

Portion of tooth covered with enamel

Anatomic crown

Part of tooth visible in the mouth

Clinical crown

Enamel‑forming cells

Ameloblasts

Three primary periods in tooth formation

Growth, Calcification, Eruption

Process establishing tooth shape and size

Morphodifferentiation

Division of a tooth into two roots

Bifurcation

Cells responsible for bone resorption

Osteoclasts

Study of tissues on a microscopic level

Histology

Harmful environmental influences

Teratogens

Bone growth/displacement process

Modeling

Dentin‑forming cells

Odontoblasts

Movement of tooth into functional position

Eruption

First week when zygote forms

Pre‑implantation period

Cementum‑forming cells

Cementoblasts

Period from week 2 to week 8

Embryonic period

Most abundant mineral in enamel

Hydroxyapatite

Normal process of primary tooth loss

Exfoliation

When two grooves cross

Pit

Phase from week 9 to birth

Fetal period

Division of a tooth into three roots

Trifurcation

Bone shape change due to forces

Remodeling

Microscopic canals in dentin

Dentinal tubules

Fibers connecting cementum to bone

Sharpey’s fibers

Highest point of alveolar ridge

Alveolar crest

Cells that form bone

Osteoblasts

Reparative dentin forms in response to

Irritation or injury (tertiary Dentin)

Forms after tooth reaches functional occlusion

Secondary dentin