{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,1]],"date-time":"2026-10-01T14:04:21Z","timestamp":1790863461699,"version":"4.1.0"},"reference-count":32,"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 aims to evaluate and compare the scanning accuracy of three IOSs and measuring the vertical marginal fit of three-dimensional (3D) printed resin retainers for single crown, three-unit, and cross-arch fixed partial denture situations.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Settings and Design:<\/jats:title>\n                    <jats:p>\n                      Comparative\n                      <jats:italic toggle=\"yes\">In Vitro<\/jats:italic>\n                      Study.\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Materials and Methods:<\/jats:title>\n                    <jats:p>\n                      A maxillary Nissin typodont with prepared abutments at #13, #23, #25, #27, and #16 served as the master model. A calibrated Shining 3D laboratory scanner provided the reference standard tessellation language (control). Each IOS generated six scans (\n                      <jats:italic toggle=\"yes\">n<\/jats:italic>\n                      = 6\/scanner; 18 test scans). Trueness and precision were derived by best-fit superimposition in Geomagic Design X. Fifty-four single-unit, three-unit, and cross-arch retainers were 3D-printed. Vertical marginal discrepancy was measured at mid-buccal and mid-lingual sites using a digital stereomicroscope (\u00d720).\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Statistical Analysis Used:<\/jats:title>\n                    <jats:p>\n                      One-way ANOVA with Tukey\u2019s post-hoc test was used for comparisons among scanners and prosthesis spans. Pearson\u2019s correlation was used to assess the relationship between trueness and marginal fit, and Chi-square test was used to assess clinical acceptability. A\n                      <jats:italic toggle=\"yes\">P<\/jats:italic>\n                      value \u22640.05 was considered statistically significant.\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results:<\/jats:title>\n                    <jats:p>\n                      3Shape TRIOS 3 showed the highest trueness (28.5 \u00b1 5.2 \u00b5m) and precision (18.2 \u00b1 3.1 \u00b5m), followed by Medit i700 and Shining 3D Aoralscan 3 (\n                      <jats:italic toggle=\"yes\">P<\/jats:italic>\n                      &lt; 0.001). Marginal discrepancy was lowest with 3Shape TRIOS 3 (52.4 \u00b1 6.5 \u00b5m) and increased with span. A positive correlation was found between trueness and marginal fit (\n                      <jats:italic toggle=\"yes\">r<\/jats:italic>\n                      = 0.82;\n                      <jats:italic toggle=\"yes\">P<\/jats:italic>\n                      &lt; 0.001). Clinical acceptability was 100%, 94.4%, and 77.8% for 3Shape TRIOS 3, Medit i700, and Shining 3D Aoralscan 3, respectively (\n                      <jats:italic toggle=\"yes\">P<\/jats:italic>\n                      = 0.041).\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusion:<\/jats:title>\n                    <jats:p>All three scanners delivered clinically acceptable results; 3Shape TRIOS 3 yielded the highest accuracy and best marginal adaptation. Accuracy and marginal fit deteriorated as prosthesis span increased.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.4103\/jips.jips_248_26","type":"journal-article","created":{"date-parts":[[2026,10,1]],"date-time":"2026-10-01T10:00:58Z","timestamp":1790848858000},"page":"378-388","update-policy":"https:\/\/doi.org\/10.1097\/lww.0000000000001000","source":"Crossref","is-referenced-by-count":0,"title":["Evaluation and comparison of the scanning accuracy of three intraoral scanners for single crown, three-unit, and cross-arch fixed partial denture by three-dimensional digital superimposition technique and measurement of vertical marginal fit of three-dimensional-printed resin retainers: An in vitro study"],"prefix":"10.4103","volume":"26","author":[{"given":"Mansi","family":"Dhiran","sequence":"first","affiliation":[{"name":"Department of Prosthodontics and Crown and Bridge, Bharati Vidyapeeth Deemed to be University Dental College and Hospital, Pune, Maharashtra, 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