Rodhinde PDF - Tooth Structure

## Rodhinde - Rodhinde (parodontium) ligger i _parodontalspalten_ mellem tandrod og knogle. - **Thickness:** Approximately 1/4 mm. - **Function:** Fastens the tooth to the alveolar bone. - The _proprioceptive nerve fibers_ register the pressure on the tooth. - Made up of _collagen fibers_, cells, a...

## Rodhinde - Rodhinde (parodontium) ligger i _parodontalspalten_ mellem tandrod og knogle. - **Thickness:** Approximately 1/4 mm. - **Function:** Fastens the tooth to the alveolar bone. - The _proprioceptive nerve fibers_ register the pressure on the tooth. - Made up of _collagen fibers_, cells, and _amorphous ground substance_. - **Collagen fibers** are in bundles called _rodhindefibre_. - **Sharpey's fibers:** Parts of the rodhindefibre embedded in the cement and bone. - **Alternative term:** _Periodontal ligament_ ## Functions of Rodhinde - Functions as _sensitive receptors_. - Plays a role in the chewing process by informing the central nervous system about the conditions in the masticatory apparatus. ## Dentoalveolar Fibers - These are the true rodhindefibre. - They are arranged like interwoven cords that stretch between the cement and bone. - They grow towards each other in the _parodontalspalte_ and meet when the tooth erupts. ## Supraalveolar fibers - These are located above the _alveolekanten_. - **Types of supraalveolar fibers:** - _Dentogingivale fibers_ - _Transseptale fibers_ - _Dentoperiostale fibers_ - _Alveologingivale fibers_ - _Circular fibers_ - **Function:** Bind the tooth and gingiva together and stabilize the teeth. - Provide _physiological mobility_ to the tooth, allowing it to move slightly in the alveolus. ## Cell Types in Rodhinde - _Fibroblasts_ are the main cells, responsible for producing collagen. - The _undifferentiated mesenchymal stem cells_ can develop into other connective tissue cells, including: - _Cementoblasts_ - _Osteoblaster_ ## Collagen Turnover - Collagen is constantly being replaced, especially during orthodontic treatment. - _Osteoclaster_ are involved in the resorption of alveolar bone to accommodate tooth movement during orthodontic treatment. ## Malassez Epiteløer - Remnants of _Hertwig's rodepitelskede_ located near the cement. - Form a network with large spaces. - Appear as isolated cell clusters on cross-section. ## Serre's Perler - Epithelial remnants from the enamel, growth, and replacement layers. - Located in the rodhinde.