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Method for Radiographic evaluation of the outcome or RCT
Ørstavik and associates suggest the use of the periapical index (PAI) for radiographic evaluation of the outcome of root canal treatment. The PAI relies on the comparison of the radiographs with a set of five radiographic images reported by Brynolf in 1967.17 These images represent a radiographically healthy periapex (score 1) to a large periapical lesion (score 5). Each of the preoperative and recall radiographs is assigned a score according to its resemblance to one of the five reference images. The outcome of root canal treatment using PAI can be classified as "healing" if the lesion size is reduced, "healed" if the lesion has been completely eliminated, or "developing" if a new lesion has formed.
What two biotic factors could affect an antelope living in the Serengeti? The biotic factors that may affect an antelope living in the Serengeti could be:predation by carnivore
FORMATION OF SOIL Evolution of Earth took place five to eight billion years ago when it was a red hot magma (molten rock). It took millions of years for the magma to cool down
What are the principal sources of excessive nitrate and phosphate in rivers and lakes?
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what is almentary canal
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