{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,29]],"date-time":"2026-09-29T01:08:53Z","timestamp":1790644133239,"version":"4.1.0"},"reference-count":34,"publisher":"Wiley","issue":"1","license":[{"start":{"date-parts":[[2009,1,1]],"date-time":"2009-01-01T00:00:00Z","timestamp":1230768000000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Journal of Periodontology"],"published-print":{"date-parts":[[2009,1]]},"abstract":"<jats:p><jats:bold>Background:<\/jats:bold> Root resection is one treatment option for preserving molars with furcation involvement. This study evaluated the prognosis of root\u2010resection therapy retrospectively and examined the factors influencing the survival rate of resected molars.<\/jats:p><jats:p><jats:bold>Methods:<\/jats:bold> Root\u2010resection therapy was performed on 691 molars in 579 patients. The associated factors were examined from 342 of 402 molars that had been followed up for &gt;1 year. Survival analysis was used to statistically analyze the factors.<\/jats:p><jats:p><jats:bold>Results:<\/jats:bold> Over the past 10 years, 102 of 342 cases (29.8%) failed. The factors were classified into four groups and analyzed to determine their influence on the survival rate of the resected molars. Regarding the resection\u2010related factors, the molars resected because of periodontal problems had a higher survival rate than those resected because of non\u2010periodontal problems (tooth fracture, dental caries, and endodontic problems; <jats:italic>P<\/jats:italic> = 0.0097). Patient\u2010 and tooth\u2010related factors had no effect on the survival rates. Among the site\u2010related factors, only the amount of bone support of the remaining roots at the time of surgery had a significant effect on the survival rate in the group of molars with periodontal problems (<jats:italic>P<\/jats:italic> = 0.0269).<\/jats:p><jats:p><jats:bold>Conclusions:<\/jats:bold> Root resection to treat periodontal problems had a better prognosis than for non\u2010periodontal problems. To achieve a good result, it was important that the remaining roots had &gt;50% bone support. This guideline may help to improve the predictability of root\u2010resection therapy.<\/jats:p>","DOI":"10.1902\/jop.2009.080316","type":"journal-article","created":{"date-parts":[[2008,12,30]],"date-time":"2008-12-30T06:33:32Z","timestamp":1230618812000},"page":"32-40","source":"Crossref","is-referenced-by-count":58,"title":["Factors Influencing the Outcome of Root\u2010Resection Therapy in Molars: A 10\u2010Year Retrospective Study"],"prefix":"10.1002","volume":"80","author":[{"given":"Shin\u2010Young","family":"Park","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Seung\u2010Yun","family":"Shin","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Seung\u2010Min","family":"Yang","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Seung\u2010Beom","family":"Kye","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2009,1]]},"reference":[{"key":"e_1_2_7_2_1","first-page":"45","volume-title":"Glossary of Periodontal Terms","author":"American Academy of Periodontology","year":"2001"},{"key":"e_1_2_7_3_1","first-page":"79","article-title":"Radical and heroic treatment of alveolar abscess by amputation of roots of teeth","volume":"26","author":"Farrar JN","year":"1884","journal-title":"Dental Cosmos"},{"key":"e_1_2_7_4_1","first-page":"189","article-title":"A retrospective analysis of the periodontal\u2010prosthetic treatment of molars with interradicular lesions","volume":"11","author":"Carnevale G","year":"1991","journal-title":"Int J Periodontics Restorative Dent"},{"key":"e_1_2_7_5_1","doi-asserted-by":"publisher","DOI":"10.1111\/j.1600-051X.1998.tb02430.x"},{"key":"e_1_2_7_6_1","doi-asserted-by":"publisher","DOI":"10.1902\/jop.1981.52.12.719"},{"key":"e_1_2_7_7_1","doi-asserted-by":"publisher","DOI":"10.1902\/jop.1988.59.12.805"},{"key":"e_1_2_7_8_1","doi-asserted-by":"publisher","DOI":"10.14219\/jada.archive.1986.0050"},{"key":"e_1_2_7_9_1","first-page":"190","article-title":"Prognosis and mortality of root\u2010resected molars","volume":"17","author":"Blomlof L","year":"1997","journal-title":"Int J Periodontics Restorative Dent"},{"key":"e_1_2_7_10_1","first-page":"322","article-title":"The treatment dilemma of the furcated molar: Root resection versus single\u2010tooth implant restoration. 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