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논문 기본 정보

자료유형
학술저널
저자정보
Tobias Graf (Johann Wolfgang Goethe University) Jan-Frederik Güth (Johann Wolfgang Goethe University) Christian Diegritz (University Hospital) Anja Liebermann (Department of Prosthetic Dentistry University Hospital LMU Munich Munich Germany) Josef Schweiger (Department of Prosthetic Dentistry University Hospital LMU Munich Munich Germany) Oliver Schubert (Department of Prosthetic Dentistry University Hospital LMU Munich Munich Germany)
저널정보
대한치과보철학회 The Journal of Advanced of Prosthodontics The Journal of Advanced of Prosthodontics 제13권 제6호
발행연도
2021.12
수록면
351 - 360 (10page)

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PURPOSE. The aim of this study was to evaluate the efficiency of occlusal and interproximal adjustments of single implant crowns (SIC), comparing a digital cast-free approach (CF) and a protocol using 3D printed casts (PC). MATERIALS AND METHODS. A titanium implant was inserted at position of lower right first molar in a typodont. The implant position was scanned using an intraoral scanner and SICs were fabricated accordingly. Ten crowns (CF; n = 10) were subject to a digital cast-free workflow without any labside occlusal and interproximal modifications. Ten other identical crowns (PC) were adjusted to 3D printed casts before delivery. All crowns were then adapted to the testing model, simulating chair-side adjustments during clinical placement. Adjustment time, quantity of adjustments, and contact relationship were assessed. Data were analyzed using SPSS software (P < .05). RESULTS. Median and interquartile range (IQR) of clinical adjustment time was 02:44 (IQR 00:45) minutes in group CF and 01:46 (IQR 00:21) minutes in group PC. Laboratory and clinical adjustment time in group PC was 04:25 (IQR 00:59) minutes in total. Mean and standard deviation (±SD) of root mean squared error (RMSE) of quantity of clinical adjustments was 45 ± 7 μm in group CF and 34 ± 6 μm in group PC. RMSE of total adjustments was 61 ± 11 μm in group PC. Quality of occlusal contacts was better in group CF. CONCLUSION. Time effort for clinical adjustments was higher in the cast-free protocol, whereas quantity of modifications was lower, and the occlusal contact relationship was found more favourable.
#CAD-CAM #Cast-free #Digital workflow #Single implant crown #3D printing #Time-efficiency

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참고문헌 (34)

참고문헌 신청
van Noort R / 2012 / The future of dental devices is digital / Dent Mater 28:3~12 google schola Mühlemann S / 2018 / Is the use of digital technologies for the fabrication of implant-supported reconstructions more efficient and/or more effective than conventional techniques:A systematic review / Clin Oral Implants Res 29:184~195 google schola Schubert O / 2019 / Digital implant planning and guided implant surgery – workflow and reliability / Br Dent J 226:101~108 google schola Ender A / 2019 / Accuracy of complete-and partial-arch impressions of actual intraoral scanning systems in vitro / Int J Comput Dent 22:11~19 google schola Hasanzade M / 2019 / In vivo and in vitro comparison of internal and marginal fit of digital and conventional impressions for full-coverage fixed restorations: a systematic review and meta-analysis / J Evid Based Dent Pract 19:236~254 google schola

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