Tooth Development
Name 3 dental development disturbances.
anodontia, supernumerary teeth, maco/microdontia, dens in dente, germination, fusion, tubercle, enamel pearl, enamel dysplasia, and concrescence
What is the highest point of the alveolar ridge?
alveolar crest
This period extends from the beginning of the second week of pregnancy to the eighth week and is considered the most critical time of development
embryonic period
In regards to the gingival unit of the periodontium, this tissue is noted for its softer texture, moist surface, and ability to stretch and be compressed, acting as a cushion for underlying structures. What is the name of this tissue?
lining mucosa
Osteogenesis is divided into three primary period:
growth, calcification, and eruption
What are the three stages of growth period for teeth?
bud stage, cap stage, and bell stage
What are the three types of dentin?
primary, secondary, tertiary
This branchial arch, known as the mandibular arch, forms the bones, muscles, and nerves of the face, including the muscle of mastication in the early development of the mouth. What is the name of this branchial arch?
first branchial arch
What are the five periodontal fiber groups?
alveolar crest fibers, horizontal fibers, oblique fibers, apical fibers, and interradicular fibers
How early can succedaneous teeth begin to form during gestation?
24 weeks
The process of primary teeth being lost as permanent teeth develop is called?
shedding or exfoliating
What almost continuously lines the oral cavity?
oral mucosa
___________ also known as displacement, this describes the changes that occur along with the articulation (joints) of the bones as they increase in size and shape.
modeling
What is another name for lamina dura?
cribriform plate
A ______ is a fault along a developmental groove on the occlusal surface that is caused by incomplete or imperfect joining of the lobes during tooth formation. _______ results when two developmental grooves cross each other, forming a deep area that is too small for bristles of a toothbrush to clean.
fissures, pits
What is the difference between anatomical crown and the clinical crown?
anatomical- part of the tooth that is covered in enamel, clinical- portion of the tooth that is visible in the mouth
The cavity within the alveolar process that surrounds the root of the tooth is called?
alveolar socket
Ethanol, tetracycline, rubella, HIV, and high radiation are all examples of what?
know teratogens involves in congenital malformations
This dentin forms in response to attrition (wearing away of teeth through normal use), erosion, dental caries, dental treatment, or other irritants. What is the name of the type of dentin?
tertiary or reparative dentin
What are the enamel forming cells?
ameloblasts
The basic shape and size of each tooth is determined during a process called what?
morphodifferentiation
What is the purpose of the periodontium?
supports the teeth within the alveolar bone
Faulty development of dentin from interference with odontoblasts is called _________.
dentinal dysplasia
These are incremental rings, similar to growth rings around a tree that represent variations in the deposition of enamel matrix during formation of the tooth.
Striae of Retzius
These fibers, which terminate in a branching network at the junction with the enamel or cementum, transmit pain stimuli and makes dentin an excellent thermal conductor.
dentinal fibers