The dental organ
Introduction : the dental organ is a separate entity originating from the mesenchymal papilla and ensuring, through its morphofunctional aspect, the masticatory function; all the tissues of this organ form the tooth.
The tooth consists of two parts
A visible so-called crown
The other invisible one called root
All the tissues forming the tooth (Enamel, Dentine, Pulp, Cementum) are called ODONTY.
Which is of epithelial and connective origin. The tissues surrounding the rest of the tooth are
Called PERIODONTIC
The “odontium and periodontium” set constitutes
THE DENTAL ORGAN 
II-Definition: the dental organ is the biological and functional unit constituted by tissues of epithelial and connective origin thus the dental organ is a complex composed of two parts; one exposed directly to the forces of mastication:
tooth and the other supports and transmits the forces,
“supporting part”: periodontium
III- THE DENTAL ORGAN
A/ the odontium : made up of enamel, dentin, pulp and cement.
1-Email: it is the hardest tissue of the body, contains more than 95% mineral matter (inorganic); 4% organic substance and 1% water it is a translucent substance that covers the external part of the crown.
2-Dentin: hard tissue made up of 70% calcified mineral matter and 30% organic matter housed in the dentinal tubules; the dentinal tubules are juxtaposed and more or less parallel to each other.
3-The pulp: it is a connective-vascular-nervous tissue located in a central cavity of the tooth with a rigid wall and connected to the periodontium mainly by a narrow apical foramen.
4-cementum: it is a mineralized layer, covering the entire root surface, it is an essential element of the supporting tissues (periodontium) of the tooth and serves as an anchor for the ligament fibers.
B/ The periodontium: made up of cementum, desmodontium, and alveolar bone;
1- The desmodontium: or alveolo-dental ligament, connects the tooth to its alveolus, it is a connective-vascular-nervous mass; it is anchored to the cribliform lamina of the alveolar bone on the one hand and to the cementum on the other hand.
2-alveolar bone: it is the supporting bone of the tooth, its structure, morphology and physiology depend on the tooth, its shape, its position on the arch and its function;
It develops with the tooth, it grows with its eruption and is almost entirely resorbed after its loss.
CONCLUSION.
The dental organ must be considered as a whole because there are inter-relationships between the different elements of the odontium and the periodontium.
1- From an embryological point of view: all the elements of the dental organ derive from the same mesenchymal papilla.
2- From a histological point of view: the pulp and desmodontal tissue merge at the apical level.
Cementum and alveolar bone are histologically linked by desmodontal fibers.
3- From a physiological point of view: the tooth supports the masticatory forces but it is the desmodont which absorbs them.
4- From a pathological point of view: the diseases of one influence the other and vice versa.
5- From a therapeutic point of view: healing of the tooth is a condition for good health of the periodontium.
The dental organ
Misplaced wisdom teeth can damage adjacent teeth.
Ceramic dental crowns provide a natural-looking result.
Receding gums can expose tooth roots.
Clear aligners are a discreet alternative to braces.
Composite fillings are less visible than amalgam.
Interdental brushes prevent gum problems.
A diet rich in calcium strengthens teeth and bones.