{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,5,10]],"date-time":"2026-05-10T23:00:05Z","timestamp":1778454005736,"version":"3.51.4"},"reference-count":31,"publisher":"Wiley","issue":"4","license":[{"start":{"date-parts":[[2022,7,15]],"date-time":"2022-07-15T00:00:00Z","timestamp":1657843200000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Journal of Prosthodontics"],"published-print":{"date-parts":[[2023,4]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec><jats:title>Purpose<\/jats:title><jats:p>Removal of zirconia restorations can be challenging and time consuming, requiring dental burs with optimal cutting efficiency to minimize iatrogenic complications. Yet, there are very few burs marketed for this purpose and little evidence of their comparative benefit. This study evaluated one specialized bur and compared its cutting efficiency with three general\u2010purpose burs (one single use and two multiple uses).<\/jats:p><\/jats:sec><jats:sec><jats:title>Materials and methods<\/jats:title><jats:p>This study was designed to assess the cutting efficiency of 4 burs on a high\u2010strength zirconia substrate. One of these burs is a multiple\u2010use bur marketed for high\u2010strength ceramics (Komet 4ZR), another is a single\u2010use general\u2010purpose bur (Piranha 837.012 coarse), and two are multiple\u2010use general\u2010purpose burs (Brassler 6837.31.012C coarse and Komet 6837.314.012 coarse). The cutting efficiency of each bur was determined by measuring the time taken to perform serial 2 mm cuts into a block of zirconia. Ten burs in each group were tested with repeated cuts until the time taken for a 2 mm cut was twice that of the first 2 mm cut (50% loss of efficiency). This study was performed under reproducible conditions using a custom\u2010designed and fabricated rig assembly.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>The results demonstrated a statistically significant difference in the cutting efficiency between bur types. The single\u2010use general\u2010purpose bur (Piranha 837.012) was the most efficient for all cut numbers <jats:italic>p<\/jats:italic> &lt;2.2 \u00d7 10<jats:sup>\u201316<\/jats:sup>. The performance of all burs decreased with each cut, with cutting efficiency dependent on time point\/cut number (<jats:italic>p<\/jats:italic> = 0.02). The rate of deterioration varied between burs, but this difference was not sufficient to be statistically significant.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusions<\/jats:title><jats:p>This study demonstrated that a single\u2010use bur is more efficient than 3 multiple\u2010use burs. The cutting efficiency of a single\u2010use general\u2010purpose bur (Piranha 837.012 coarse) on Cerec Zirconia Mono L was statistically superior to that of multiple patient use burs in this study, including one marketed for use on high\u2010strength ceramics. Because single\u2010use burs are comparatively inexpensive and require no sterilization, they should be strongly considered for the removal of zirconia restorations.<\/jats:p><\/jats:sec>","DOI":"10.1111\/jopr.13564","type":"journal-article","created":{"date-parts":[[2022,6,30]],"date-time":"2022-06-30T16:54:33Z","timestamp":1656608073000},"page":"347-352","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":6,"title":["Bur Choice When Removing Zirconia Restorations"],"prefix":"10.1111","volume":"32","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-1783-8577","authenticated-orcid":false,"given":"Francis L.","family":"Keeling","sequence":"first","affiliation":[{"name":"Department of Prosthodontics UT Health San Antonio  San Antonio TX"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Robert M.","family":"Taft","sequence":"additional","affiliation":[{"name":"Department of Prosthodontics UT Health San Antonio  San Antonio TX"},{"name":"Uniformed Services University  Bethesda MD"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Stephan J.","family":"Haney","sequence":"additional","affiliation":[{"name":"Department of Prosthodontics UT Health San Antonio  San Antonio TX"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","published-online":{"date-parts":[[2022,7,15]]},"reference":[{"key":"e_1_2_7_2_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.cden.2018.11.005"},{"key":"e_1_2_7_3_1","doi-asserted-by":"publisher","DOI":"10.11607\/ijp.3647"},{"key":"e_1_2_7_4_1","doi-asserted-by":"publisher","DOI":"10.14219\/jada.2013.44"},{"key":"e_1_2_7_5_1","doi-asserted-by":"publisher","DOI":"10.1016\/S0109-5641(00)00038-5"},{"key":"e_1_2_7_6_1","doi-asserted-by":"publisher","DOI":"10.1590\/S1678-77572009000600009"},{"key":"e_1_2_7_7_1","doi-asserted-by":"publisher","DOI":"10.1111\/j.1532-849X.2000.00066.x"},{"key":"e_1_2_7_8_1","first-page":"254","article-title":"Comparing cutting efficiencies of diamond burs using a high\u2010speed electric handpiece","volume":"54","author":"Chung EM","year":"2006","journal-title":"Gen Dent"},{"key":"e_1_2_7_9_1","first-page":"544","article-title":"Handpiece coolant flow rate and dental cutting","volume":"25","author":"Fraunhofer JA","year":"2000","journal-title":"Oper Dent"},{"key":"e_1_2_7_10_1","volume-title":"The Cutting Efficiency of Disposable Diamond Burs (dissertation)","author":"Patel M","year":"2008"},{"key":"e_1_2_7_11_1","volume-title":"Assessment of Disposable Diamond Burs (dissertation)","author":"Olivencia YB","year":"2015"},{"key":"e_1_2_7_12_1","doi-asserted-by":"publisher","DOI":"10.1016\/S0022-3913(09)60064-0"},{"key":"e_1_2_7_13_1","doi-asserted-by":"publisher","DOI":"10.1016\/S0022-3913(10)60013-3"},{"key":"e_1_2_7_14_1","first-page":"203","article-title":"Evaluating performance of dental rotary cutting instruments. 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