Tooth Microstructure and Dental Pulp Morphology Part II Flashcards
Pulp Tissue - Physiology
•Four main functions of pulp tissue:
1) Formation of ___
2) ___
3) ___
4) __ and ___
•Four main functions of pulp tissue:
1) Formation of dentin
2) Nutrition
3) Sensation
4) Defense and Protection
Pulp Tissue - Physiology
•Dentin Formation
–Process is called ____ and is the function of ____ (cells that have differentiated from the peripheral portion of the ___)
•Types of Dentin
–____ Physiologic dentin – laid down only during__ ___, production of this dentin ends when ___ ____ is complete
•Dentin Formation
–Process is called dentinogenesis and is the function of odontoblasts (cells that have differentiated from the peripheral portion of the pulp)
•Types of Dentin
–Primary Physiologic dentin – laid down only during tooth formation, production of this dentin ends when root development is complete
Pulp Tissue - Physiology
•Dentin Formation - Types
–Secondary Physiologic dentin – only produced after complete ___ of ___. Formed as long as tooth is ___.
–Tertiary Dentin - formed in response to a ___ stimulus such as___ .
–Reactionary Dentin –formed by ___ that have ___d the ___ stimulus
–Reparative Dentin – ___ odontoblasts have undergone ____ and a___ group of odontoblasts have ___ from cells in the ___
•Dentin Formation - Types
–Secondary Physiologic dentin – only produced after complete formation of tooth. Formed as long as tooth is vital.
–Tertiary Dentin - formed in response to a noxious stimulus such as caries.
–Reactionary Dentin –formed by odontoblasts that have survived the noxious stimulus
–Reparative Dentin – original odontoblasts have undergone apoptosis and a new group of odontoblasts have differentiated from cells in the pulp
Secondary Dentin
•Secondary dentin forms in response to__ ____activities. It forms throughout ___
Reparative Dentin
•Reparative (___) dentin forms in response to ___s such as ___, ___, ___, ___
•Reparative (tertiary) dentin forms in response to irritants such as bruxing or clenching, erosion, trauma and dentinal caries.
Pulp Tissue - Physiology
- Nutrition – maintains pulp ___, carried on by___ adnd ___ vessels in the pulp tissue. Enter the tooth mainly through the ___ ___, some ___ supply through __ ___.
- Sensation – __ tissue in the pulp is responsible for __ and all other sensory functions of the teeth
- Defense and Protection – pulp is capable of responding through ___, resulting in ___ ___and ___ ___
Pulp Tissue - Physiology
- Nutrition – maintains pulp vitality, carried on by blood and lymph vessels in the pulp tissue. Enter the tooth mainly through the apical foramen, some auxiliary supply through periodontal membrane
- Sensation – nerve tissue in the pulp is responsible for pain and all other sensory functions of the teeth
- Defense and Protection – pulp is capable of responding through inflammation, resulting in odontoblast differentiation and reparative dentin
Pulp Cavity
- This is the entire___ ___ in the dentin, both ___ and ___, which contains the ___ ____ of a vital tooth
- Outline generally corresponds to the ___ ___ of the tooth
- This is the entire central space in the dentin, both root and crown, which contains the pulp tissue of a vital tooth
- Outline generally corresponds to the external contour of the tooth
Pulp Cavity
•Pulp Chamber – portion of the pulp cavity located in the ___ ___
•Pulp Chamber – portion of the pulp cavity located in the anatomical crown
Pulp Cavity
- Pulp Canal(s) – portion of the pulp cavity located in the __ ___, ___ to the pulp ___.
- A.K.A. as___ __)
Pulp Cavity
- Pulp Canal(s) – portion of the pulp cavity located in the anatomical root, apical to the pulp chamber.
- A.K.A. as Root Canal(s)
Pulp Cavity
- Pulp Horn(s) – pointed ___ /___ limits of the pulp __ and pulp ___
- Often reflect the ___ or ___ pattern of the tooth’s crown
- Pulp Horn(s) – pointed incisal/ occlusal limits of the pulp cavity and pulp chamber
- Often reflect the lobe or cusp pattern of the tooth’s crown
- Apical Foramen – ___ at or near the __ ___ through which the __ and ___ supply enter and exit
- ___limit of the pulp cavity
- Apical Foramen – opening at or near the root apex through which the nerve and nutrient supply enter and exit
- Apical limit of the pulp cavity
- Lateral or Accessory Canals – ___ canals that usually extend ___ from the pulp to the ___ ___
- Normally found in the ___ half of the tooth
- Lateral or Accessory Canals – minute canals that usually extend laterally from the pulp to the periodontal membrane
- Normally found in the apical half of the tooth
- Supplementary Canals – a root canal or branch in ___of the normal number of root canals found in that root.
- Serve the __ __ as the main root canal
- Not present in all teeth , Thank Goodness!
- Supplementary Canals – a root canal or branch in excess of the normal number of root canals found in that root.
- Serve the same function as the main root canal
- Not present in all teeth , Thank Goodness!
•Anastomosis – extra __ ___h that ____ connects __+ ___s to each other or to ___ canals
•Anastomosis – extra canal branch that horizontally connects pulp canals to each other or to supplementary canals
•Orifice – the ___ in the ___ of the pulp ___r where the __ ___ begins
•Orifice – the opening in the floor of the pulp chamber where the root canal begins
