Compare and contrast dental implants and natural teeth, focusing on the following. A. Soft/hard tissue anatomy B. Blood supply C. Microbiology
What will be an ideal response?
A. There are many differences between implants and natural teeth. Implants do not develop caries, and there is no pulp; thus, implants do not develop root sensitivity. In natural teeth, the junctional epithelium provides a seal at the base of the sulcus. If this seal is disrupted, the junctional epithelium migrates apically onto the root surface. On the other hand, the implant-connective tissue interface is different from the natural tooth. In the implant, the junctional epithelium is referred to as a perimucosal seal. There is a lack of cementum with no connective tissue fibers inserting into the implant surface.
B. Implants have less blood supply near their neck with more of a scar tissue appearance. Lack of a periodontal ligament limits the blood supply to the area to only the periosteal vessels and bone marrow spaces.
C. Neither implants nor natural teeth are immune to plaque accumulation. The implant microflora are derived from the natural flora of the mouth. Some bacteria, such as Actinomyces viscosus and Streptococcus sanguis, adhere less to implants than to natural teeth. In health, the subgingival implant microflora is similar to that of natural healthy teeth. With the development of inflammation and increasing probing depths, there are elevated levels of spirochetes and gram-negative anaerobes and decreased levels of coccoid cells. Failing implants have a similar microflora to that of periodontal disease.
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A. cost B. mortality rate C. pain D. availability
Which statement is true regarding Texas?
A) About 50% of the population of Texas lacks health insurance. B) In 1969, Houston physicians performed the first face transplant. C) In the late 1920s, the first managed care plan was formed in Dallas. D) Texas is home to some of the top medical institutions in the country.
A vertical, 0-degree angulation is used for exposure of which occlusal radiograph?
A) Maxillary posterior topographical B) Mandibular anterior topographical C) Mandibular posterior topographical D) Mandibular cross sectional
A 24-year-old male arrived at the emergency department (ED) via ambulance. He had been playing a round of golf at the local golf course when just after teeing off on the third hole, he slapped his shoulder exclaiming that he had just been stung by a hornet. He immediately experienced generalized pruritus, urticaria, angioedema, and nausea. His golf partner, who was knowledgeable about reactions from stinging insects, pulled out his cell phone and called 911. The ambulance crew arrived within a few minutes, administered epinephrine, and transported him to the ED. In the ED, the emergency physician performed a level 3 E/M service and explained to the patient that his diagnosis of anaphylaxis was a reaction to a hornet sting. The physician then ordered another intramuscular injection of
epinephrine (0.1 mg). Once the patient's symptoms resolved, he was discharged with an oral antihistamine to be taken for 24 hours and a kit containing a prefilled syringe of epinephrine and an epinephrine nebulizer for prompt self-treatment for any future reaction. He was advised to see a physician for evaluation of venom immunotherapy (desensitization).