Where are cementicles found?
Cementicles are spherical calcified bodies lying free in the periodontal membrane. They may also be incorporated within the cementum or the alveolar bone or even within the bone marrow spaces of the tension side of drifting or moved teeth.
What is PDL in dentistry?
Introduction. The periodontal ligament, commonly known as the PDL, is a soft connective tissue between the inner wall of the alveolar socket and the roots of the teeth. It consists of collagen bands (mostly type I collagen) connecting the cementum of teeth to the gingivae and alveolar bone.
What does cementum cover?
Cementum is a hard, calcified layer of tissue that covers the root of the tooth. On its outer side, cementum is attached to the periodontal ligament; on its inner side, the dentin. Along with the periodontal ligament, alveolar bone and gingiva, cementum helps a tooth stay in its place.
What is the function of PDL?
The PDL is a highly specialized connective tissue situated between the tooth and the alveolar bone (Figure 1-5). The principal function of the PDL is to connect the tooth to the jaw, which it must do in such a way that the tooth will withstand the considerable forces of mastication.
What are the types of hypercementosis?
| Tooth group | Hypercementosis type | |
|---|---|---|
| discrete | moderate | |
| Maxillary molars | 2 | 1 |
| Mandibular molars | 2 | 1 |
| Maxillary premolars | 1 | 1 |
Is cementum the same as dentin?
Cementum is slightly softer than dentin and consists of about 45% to 50% inorganic material (hydroxyapatite) by weight and 50% to 55% organic matter and water by weight. The organic portion is composed primarily of collagen and protein polysaccharides.
What is cementum resorption?
Resorption is the term for a common type of dental injury or irritation that causes a loss of a part or parts of a tooth. Resorption can affect many parts of a tooth, including: interior pulp. cementum, which covers the root. dentin, which is the second-hardest tissue underneath enamel.
What is A cementicle?
A cementicle is a small, spherical or ovoid calcified mass embedded within or attached to the cementum layer on the root surface of a tooth, or lying free within the periodontal ligament. They tend to occur in elderly individuals.
What are attached and embedded Cementicles?
Attached (sessile) cementicle – attached to the cementum surface (also termed exocementosis) Embedded (interstitial) cementicle – with advancing age the cementum thickens, and the cementicle may become incorporated into the cementum layer
What is a calcified cementicle?
Cementicles are spherical calcified bodies lying free in the periodontal membrane. They may also be incorporated within the cementum or the alveolar bone or even within the bone marrow spaces of the tension side of drifting or moved teeth.
What causes Cementicles to form?
Cementicles are the result of dystrophic calcification, but the reason why this takes place is unclear. Cementicles are thought to form when calcification occurs around a nidus, a precipitating center. Around this nidus they slowly enlarge by further deposition of calcium salts.