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14 Cards in this Set
- Front
- Back
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What did the Washington Study by Ingle (2002) show? |
2 year success 94.25%. Not separated by Dx prior to Tx, just overall success. |
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Seltzer/Bender (1967) Endodontic Failures - An analysis based on clinical, roentgenographic, and histologic findings. Showed what? |
Teeth with pre Tx PARL were 2.5x more likely to fail. Most cases fail within 24 months if they are going to fail. |
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Seltzer/Bender (1966) A reappraisal of criteria showed what? |
Defined criteria for success as: 1 Absence of pain or swelling 2 Disappearance of fistula 3 No loss of function 4 No evidence of tissue destruction 5 Radiographic evidence of eliminated or arrested area of rarefaction after a post-treatment interval of 6 months to 2 years |
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Brynolf 1967 showed what about healing? |
Histologically, only 7% healed. Even though radiographs look good, inflammation may still be present (43% of cases). |
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Goldman/Pearson 1972 |
Relying solely on radiographs is unreliable for accurate dx of success/failure. |
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CRUMP! 1979. Differential diagnosis in endodontic failure. What did he say? |
POOR PAST AM perforation, obturation, overfill, root canal missed. Periodontal disease, another tooth, Split tooth, Trauma. A-, Marginal leakage |
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AKERBLOM/Hasselgren! (1998) |
calcified canals/obliterated canals that couldn't be instrumented beyond the coronal 1/3 had 89% success overall. 97.9% if no prep-op lesion, 62.5% if there was a pre-op lesion. |
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Sjogren/Sundquist 1990. Factors affecting long-term success of endo tx. |
96% vs 86% (no lesion vs. lesion) within 2mm of apex 94% overfill 76% >2mm (too short) 68% retx with lesion 62% |
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Green/Walton 1997 |
revisited Brynolf's study of inflammation on cadaver. Found that teeth with no visible inflammation on the radiograph had no histologic inflammation (74% of the time), Brynolf said only 7% were inflammation free. |
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Sjogren/Sundquist 1997 Influence of infection at the time of root filling on the outcome of endodontic treatment of teeth with apical periodontitis |
94% of teeth with negative cultures healed on same day Tx, only 68% of cases with positive cultures healed. Study suggested that not getting rid of bacteria at time of obturation can compromise success. |
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Siqueria 2001 said what about why well treated teeth can fail? |
1-bugs, intra-radicular infection (gram +) 2 |
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Friedman in 2002 showed what about success? |
defines Healed, healing, disease, functional. Disease=failing, the rest=success. After 1 year, teeth that area healing will demonstrate radiographic signs of healing. |
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Friedman 2003 "Toronto Study" showed what? |
Overall healing @5-6 years was 81% w/o apical periodontitis=92% success w/ apical periodontitis=74% success Vital pulps=95% success necrotic pulps=75% -2 appt endo with CaOH2 had 18% increased rate of success 97% of cases were clinically successful (functional) |
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Chugal 2003 looked at success between necrotic and vital cases relative to obturation levels. What did they find? |
Diseased periapex did better with obturation 0.556mm short of apex normal periapex did better 1.23mm short. *hint, think of .223 and 556 rounds. |
