{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,1]],"date-time":"2026-10-01T14:05:50Z","timestamp":1790863550000,"version":"4.1.0"},"reference-count":25,"publisher":"Ovid Technologies (Wolters Kluwer Health)","issue":"4","license":[{"start":{"date-parts":[[2026,10,1]],"date-time":"2026-10-01T00:00:00Z","timestamp":1790812800000},"content-version":"unspecified","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by-nc-nd\/4.0"}],"content-domain":{"domain":["lww.com","ovid.com"],"crossmark-restriction":true},"short-container-title":[],"published-print":{"date-parts":[[2026,10]]},"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:sec>\n                    <jats:title>Aim:<\/jats:title>\n                    <jats:p>This study aimed to evaluate and compare the vertical marginal discrepancy of DMLS copings fabricated from stone dies scanned using an intraoral scanner (IOS) and a laboratory scanner.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Settings and Design:<\/jats:title>\n                    <jats:p>An in vitro comparative study was conducted to evaluate the influence of intraoral and laboratory scanning systems on the vertical marginal discrepancy of DMLS copings.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Materials and Methods:<\/jats:title>\n                    <jats:p>\n                      A customised stainless-steel model simulating a prepared tooth with a shoulder finish line was fabricated. Impressions of the model were made using elastomeric impression material. Forty dies (\n                      <jats:italic toggle=\"yes\">n<\/jats:italic>\n                      =40) were poured using type IV dental stone and divided into two groups (\n                      <jats:italic toggle=\"yes\">n<\/jats:italic>\n                      =20). Group 1 dies were scanned using a 3Shape TRIOS IOS and Group 2 dies were scanned using a 3Shape extraoral laboratory scanner. Copings were fabricated using CAD\/CAM software. Marginal gap between the die and the coping was measured at 4 predetermined points (buccal, lingual, mesial, and distal) using a stereomicroscope at \u00d740 magnification.\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Statistical Analysis Used:<\/jats:title>\n                    <jats:p>\n                      Data were analysed using SPSS (version 21, IBM Corp., Armonk, NY, USA). Student\u2019s unpaired t-test was used to compare the tested groups. The collected data were analysed at a significance level set at\n                      <jats:italic toggle=\"yes\">P<\/jats:italic>\n                      &lt; 0.05.\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results:<\/jats:title>\n                    <jats:p>\n                      The mean marginal gap between the die and coping was 11.44 \u03bcm for Group 1 and 29.62 \u03bcm for Group 2. The difference between the groups was statistically significant (\n                      <jats:italic toggle=\"yes\">P<\/jats:italic>\n                      &lt; 0.001).\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusion:<\/jats:title>\n                    <jats:p>Copings fabricated from dies scanned using IOS demonstrated significantly lower vertical marginal discrepancies compared to those scanned using the laboratory scanner. However, the marginal gaps observed in both groups were within clinically acceptable limits.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.4103\/jips.jips_13_26","type":"journal-article","created":{"date-parts":[[2026,10,1]],"date-time":"2026-10-01T10:01:08Z","timestamp":1790848868000},"page":"370-377","update-policy":"https:\/\/doi.org\/10.1097\/lww.0000000000001000","source":"Crossref","is-referenced-by-count":0,"title":["Influence of intraoral and laboratory scanning systems on the marginal fit of direct metal laser-sintered copings: An in vitro study"],"prefix":"10.4103","volume":"26","author":[{"given":"PS","family":"Prakhyath","sequence":"first","affiliation":[{"name":"Department of Prosthodontics and Implantology, A J Institute of Dental Sciences, Mangaluru, Karnataka, India"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Bharath","family":"Prabhu","sequence":"additional","affiliation":[{"name":"Department of Prosthodontics and Implantology, A J Institute of Dental Sciences, Mangaluru, Karnataka, India"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Shijal Narayan","family":"Suvarna","sequence":"additional","affiliation":[{"name":"Department of Prosthodontics and Implantology, Srinivas Institute of Dental Sciences, Mangaluru, Karnataka, India"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"276","published-online":{"date-parts":[[2026,10,1]]},"reference":[{"key":"R1-20261001","doi-asserted-by":"crossref","first-page":"909","DOI":"10.1016\/j.prosdent.2013.12.020","article-title":"Clinical marginal and internal adaptation of CAD\/CAM milling, laser sintering, and cast metal ceramic crowns","volume":"112","author":"Tamac","year":"2014","journal-title":"J Prosthet Dent"},{"key":"R2-20261001","doi-asserted-by":"crossref","first-page":"143","DOI":"10.1016\/j.prosdent.2019.02.009","article-title":"Effect of finish line design and metal alloy on the marginal and internal gaps of selective laser melting printed 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