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Perio Quiz 2 Exam 1
| Question | Answer |
|---|---|
| What is cementum? | Thin, hard, mineralized tissue covering the surface of the tooth root. |
| What are the two functions of the cementum? | It is protective because it covers the dentin of the root. It is the attachment point of the PDL. |
| What color is cementum? | Light yellow |
| How does the resorption of cementum compare to the resorption of bone? | It is more resistant to resorption by the body. |
| Does the cementum have its own blood and nutrient supply? Where does cementum get its blood supply from? | No. The PDL. |
| What does the cementum lack? | Its own blood and nutrient supply. |
| Can cementum come back after it is gone? | No. |
| What can cause sensitivity of the teeth? | Missing cementum. |
| Can the PDL come back after being resorbed? | No. |
| Can the tooth still gain attachment to tissues after PDL and root cementum are gone? | Yes |
| What supports the teeth? | The alveolar process |
| What is the existence of alveolar bone dependent on? | The presence of teeth. |
| How do extractions effect the alveolar bone? | It leads to resorption of the alveolar bone around the missing tooth. |
| What are the Layers of the Alveolar Bone What do all of these layers make up? | Alveolar bone proper, compact bone, cancellous bone, periosteum The alveolar process. |
| Location and function of the alveolar bone proper? | Ends of the periodontal ligament fibers are embedded here. Dense bone that lines the sockets in mand and max. |
| What are the alveoli | The bony sockets that house the roots of teeth |
| What is cortical bone and where is it found? (3) | Layer of compact bone that forms the outside wall of the mandible and maxilla, surrounds alveolar bone proper, supports sockets |
| What type of bone supports the sockets? | Cortical bone. |
| What are the PDL ligament fibers embedded into? | In the alveolar bone proper and the cementum. |
| Where is cancellous bone found? | Spongey bone filling the space between the cortical bone and the alveolar bone proper. |
| What covers the alveolar bone? | Periostium |
| What is the periosteum? | A layer of CT that covers the outer surface of bone |
| Why do dentists want to remove wisdom teeth at such a young age? | Older people may have issues with resorption, while younger people are still highly regenerative. |
| What is the alveolar bone proper? | Dense layer of compact bone under the sockets/alveoli |
| What is the alveolar process? What does the alveolar process consist of? | The bony ridge that makes up the socket on the max and mand. Alveolar proper and cancellous bone |
| What does alveolar bone consist of? | All of the bones and tissues of the max and mand. |
| What is the first thing that the RDH assesses? | Gingival health |
| What two structures do we look at to assess gingival health? | The marginal contour and the papillary contour |
| Why is looking at the marginal contour important? | Bacteria reside here most |
| Why is it important to look at the papilla? | Col has the highest rate of infection |
| What characteristic of the marginal and papillary gingiva do we look at | Color, contour, and consistency. |
| What color is healthy marginal and papillary contour? | Pink or white. |
| Why can a white color be a sign of health? | If there is fibrotic tissue on the gums, the gum tissue appears white. |
| What color is diseased marginal and papillary contour? | Erythemic, cyanotic, or white |
| What is erythemic color and what is it caused by? | Red color that is caused by increased blood flow due to disease process. |
| What is cyanotic color and what is it caused by? | Blueish color caused by tissue not receiving enough oxygen. |
| When would a white color be unhealthy? | When it is caused by lack of blood flow. |
| What 4 terms can be used to describe healthy marginal contour? | Knifelike, rolled, recessed, clefted. |
| What does knifelike marginal contour look like? | The gingiva is smoothly transitioned onto the tooth's surface. |
| What 4 terms can be used to describe diseased marginal contour? | Festooned, rolled, recessed, clefted. |
| Why can rolled gingiva be considered healthy sometimes? | Once the knifelike marginal contour is gone, it never comes back. So if disease is healed, marginal contour can still be healthy. |
| What causes rolled gingiva? | Some medications, inflammation |
| What causes recession of the marginal contour? | Misuse of toothpicks, movement of teeth in orthodontia. |
| What causes clefting to happen in marginal gingiva? | Incorrect flossing, using smokeless chewing tobacco, piercings that rub |
| What are two differences between recession and a cleft of the marginal gingiva? | Recession is the uniform loss of the marginal gingiva, cleft is the loss of gingiva in a specific section. Recession can be healed, cleft can heal but is permanent. |
| Why can clefted and recessed gingiva also be considered healthy gingiva? | The gingiva can heal from prior disease or trauma, and still appear recessed or clefted. |
| What is festooned marginal gingiva? | Swollen |
| What are the 3 general signs of a healthy marginal contour? | Tapered margin, coronal to CEJ. Pointed papillae that completely fill the space. Light pink color. |
| What 2 terms can be used to describe healthy papillary contour? | Pointed, blunted |
| What does pointed papillary contour look like? | All embrasures are filled by the papillae. |
| What does blunted papillary contour look like? What causes it? | Papillae does not fill the embrasure space. Swelling. |
| What are 3 terms that describe diseased papillary contour? | Blunted, bulbous, cratered. |
| What does bulbous papillary contour look like? | Puffy. |
| What does cratered papillary contour look like? | It forms a "U" shape. |
| What causes bulbous papillary contour and festooned marginal contour? | Immune response. |
| What is the marginal and papillary consistency when healthy? | Firm, fibrotic. |
| What is fibrotic? | Scar tissue that feels leathery. |
| Why is firm gingiva a sign of health? | No excess fluid built up under gingiva. |
| What are two characteristics of diseased marginal and papillary consistency? | Edematous, fibrotic |
| Describe edematous | Fluid built up under the tissue causes swelling. Feels squishy. |
| Why can consistency marginal and papillary be fibrotic and still healthy? | Healed gingiva can still have scar tissue. |
| What are the three classifications that are used to describe the severity of marginal and papillary contour characteristics? | Slightly, Moderately, Severely. |
| What 3 descriptive terms of the papillary contour can be classified like this? | Blunted, cratered, and bulbous |
| What 3 descriptive terms of both the papillary contour and Marginal contour can be classified like this? | Edematous, eurythmic |
| Purpose of sulcus? | Flush bacteria and food out. |
Created by:
Saylorlee5