{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,6,30]],"date-time":"2026-06-30T05:15:44Z","timestamp":1782796544211,"version":"3.54.5"},"reference-count":37,"publisher":"MDPI AG","issue":"4","license":[{"start":{"date-parts":[[2026,4,2]],"date-time":"2026-04-02T00:00:00Z","timestamp":1775088000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Dentistry Journal"],"abstract":"<jats:p>Background: Additively manufactured surgical guides require post-processing and subsequent decontamination prior to intraoral use. Steam sterilization and chemical disinfection protocols may influence the dimensional stability of polymer-based guide materials and potentially affect clinical fit and accuracy. Objectives: This in vitro study evaluated the dimensional changes of SLA 3D-printed Surgical Guide Resin V1 (Formlabs) after steam sterilization at 121 \u00b0C (AUT121) and 134 \u00b0C (AUT134) and after disinfection using 70% isopropyl alcohol (IPA70), compared with an untreated control group. Methods: Forty standardized specimens were fabricated using SLA technology and divided into four groups (n = 10\/group): Control (CT), 121 \u00b0C steam sterilization (AUT121), 134 \u00b0C steam sterilization (AUT134), and IPA70 disinfection. Two linear measurement zones (L1 and L2) were assessed per specimen. Baseline measurements were recorded with a caliper (mm). Post-treatment measurements were obtained using microscopic evaluation, recorded in \u00b5m, and converted to mm for analysis. Dimensional change was calculated as \u0394L = L_after \u2212 L_before. Within-group comparisons and between-group analyses were performed with a significance level of \u03b1 = 0.05. Results: Steam sterilization at 134 \u00b0C (AUT 134) produced statistically significant dimensional changes in both zones (L1: p = 0.036; L2: p = 0.042). No statistically significant differences were observed in the AUT121 group (L1: p = 0.437; L2: p = 0.682) or the IPA70 group (L1: p = 0.164; L2: p = 0.086). Between-group analysis showed no significant differences for \u0394L1 (p = 0.345), whereas \u0394L2 differed significantly among groups (p = 0.021). Conclusions: Under the conditions of this study, AUT134 steam sterilization significantly affected the dimensional stability of SLA-printed Surgical Guide Resin V1 specimens. The AUT121 protocol and IPA70 disinfection did not result in statistically significant dimensional changes compared with baseline.<\/jats:p>","DOI":"10.3390\/dj14040204","type":"journal-article","created":{"date-parts":[[2026,4,2]],"date-time":"2026-04-02T07:57:55Z","timestamp":1775116675000},"page":"204","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":1,"title":["Dimensional Stability of SLA 3D-Printed Surgical Guide Resin After Steam Sterilization (121 \u00b0C and 134 \u00b0C) and Isopropyl Alcohol Disinfection: An In Vitro Study"],"prefix":"10.3390","volume":"14","author":[{"given":"Ioan","family":"S\u00eerbu","sequence":"first","affiliation":[{"name":"Department of Oral Implantology, Faculty of Dental Medicine, University of Medicine and Pharmacy \u201cCarol Davila\u201d, 050474 Bucharest, Romania"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0009-0003-0150-0613","authenticated-orcid":false,"given":"Andreea","family":"Custura","sequence":"additional","affiliation":[{"name":"Department of Dental Prosthetics, Faculty of Dental Medicine, University of Medicine and Pharmacy \u201cCarol Davila\u201d, 050474 Bucharest, Romania"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Adelin","family":"Radu","sequence":"additional","affiliation":[{"name":"Department of Dental Prosthetics, Faculty of Dental Medicine, University of Medicine and Pharmacy \u201cCarol Davila\u201d, 050474 Bucharest, Romania"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-6251-833X","authenticated-orcid":false,"given":"Vlad Gabriel","family":"Vasilescu","sequence":"additional","affiliation":[{"name":"Department of Dental Prosthetics, Faculty of Dental Medicine, University of Medicine and Pharmacy \u201cCarol Davila\u201d, 050474 Bucharest, Romania"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Vladimir","family":"Nastasie","sequence":"additional","affiliation":[{"name":"Faculty of Dental Medicine, University of Medicine and Pharmacy \u201cCarol Davila\u201d, 050474 Bucharest, Romania"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-0112-3494","authenticated-orcid":false,"given":"Vasile Iulian","family":"Antoniac","sequence":"additional","affiliation":[{"name":"Faculty Materials Science & Engineering, National University Science & Technology Politehnica Bucharest, 313 Splaiul Independentei, Dist 6, 060042 Bucharest, Romania"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-2723-6713","authenticated-orcid":false,"given":"Marian","family":"Miculescu","sequence":"additional","affiliation":[{"name":"Faculty Materials Science & Engineering, National University Science & Technology Politehnica Bucharest, 313 Splaiul Independentei, Dist 6, 060042 Bucharest, Romania"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0009-0005-1400-0831","authenticated-orcid":false,"given":"Adrian Ionut","family":"\u0218i\u0219man","sequence":"additional","affiliation":[{"name":"Faculty of Power Engineering, University Politehnica Bucharest, 060042 Bucharest, Romania"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-6267-2406","authenticated-orcid":false,"given":"Valentin","family":"S\u00eerbu","sequence":"additional","affiliation":[{"name":"Department of Implant-Prosthetic Therapy, Faculty of Dental Medicine, University of Medicine and Pharmacy \u201cCarol Davila\u201d, 050474 Bucharest, Romania"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2026,4,2]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"309","DOI":"10.1016\/j.prosdent.2019.02.007","article-title":"Accuracy, reproducibility, and dimensional stability of additively manufactured surgical templates","volume":"122","author":"Chen","year":"2019","journal-title":"J. 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