Marginal and internal fit of 3D printed provisional crowns according to build directions
2
조회
0
다운로드
2
인용
0
참고문헌
키워드
초록
PURPOSE. This study aimed to fabricate provisional crowns at varying build directions using the digital light processing (DLP)-based 3D printing and evaluate the marginal and internal fit of the provisional crowns using the silicone replica technique (SRT). MATERIALS AND METHODS. The prepared resin tooth was scanned and a single crown was designed using computer-aided design (CAD) software. Provisional crowns were printed using a DLP-based 3D printer at 6 directions (120°, 135°, 150°, 180°, 210°, 225°) with 10 crowns in each direction. In total, sixty crowns were printed. To measure the marginal and internal fit, a silicone replica was fabricated and the thickness of the silicone impression material was measured using a digital microscope. Sixteen reference points were set and divided into the following 4 groups: marginal gap (MG), cervical gap (CG), axial gap (AG), and occlusal gap (OG). The measurements were statistically analyzed using one-way ANOVA and Dunnett T3. RESULTS. MG, CG, and OG were significantly different by build angle groups (P<.05). The MG and CG were significantly larger in the 120° group than in other groups. OG was the smallest in the 150° and 180° and the largest in the 120° and 135° groups. CONCLUSION. The marginal and internal fit of the 3D-printed provisional crowns can vary depending on the build angle and the best fit was achieved with build angles of 150° and 180°.
Abstract
PURPOSE. This study aimed to fabricate provisional crowns at varying build directions using the digital light processing (DLP)-based 3D printing and evaluate the marginal and internal fit of the provisional crowns using the silicone replica technique (SRT). MATERIALS AND METHODS. The prepared resin tooth was scanned and a single crown was designed using computer-aided design (CAD) software. Provisional crowns were printed using a DLP-based 3D printer at 6 directions (120°, 135°, 150°, 180°, 210°, 225°) with 10 crowns in each direction. In total, sixty crowns were printed. To measure the marginal and internal fit, a silicone replica was fabricated and the thickness of the silicone impression material was measured using a digital microscope. Sixteen reference points were set and divided into the following 4 groups: marginal gap (MG), cervical gap (CG), axial gap (AG), and occlusal gap (OG). The measurements were statistically analyzed using one-way ANOVA and Dunnett T3. RESULTS. MG, CG, and OG were significantly different by build angle groups (P<.05). The MG and CG were significantly larger in the 120° group than in other groups. OG was the smallest in the 150° and 180° and the largest in the 120° and 135° groups. CONCLUSION. The marginal and internal fit of the 3D-printed provisional crowns can vary depending on the build angle and the best fit was achieved with build angles of 150° and 180°.
참고문헌 (35)
- Berman B, "3-D printing : The new industrial revolution", Bus Horiz, 55, pp.155~162 (2012)
- Azari A, "The evolution of rapid prototyping in dentistry : a review", Rapid Prototyp J, 15, pp.216~225 (2009)
- Andersen UV, "Inprocess 3D geometry reconstruction of objects produced by direct light projection", Int J Adv Manuf Technol, 68, pp.565~573 (2013)
- Mitteramskogler G, "Light curing strategies for lithography-based additive manufacturing of customized ceramics", Addit Manuf, 1, pp.110~118 (2014)
- Duke ES, "Provisional restorative materials : a technology update", Compend Contin Educ Dent, 20, pp.497~500 (1999)
- Hamza TA, "Fracture resistance of fiber-reinforced PMMA interim fixed partial dentures", J Prosthodont, 15, pp.223~228 (2006)
- Digholkar S, "Evaluation of the flexural strength and microhardness of provisional crown and bridge materials fabricated by different methods", J Indian Prosthodont Soc, 16, pp.328~334 (2016)
- Monday JJ, "Marginal adaptation of provisional acrylic resin crowns", J Prosthet Dent, 54, pp.194~197 (1985)
- Cheng W, "Multiobjective optimization of part-building orientation in stereolithography", Rapid Prototyp J, 1, pp.12~23 (1995)
- 박진영, "Comparison of prosthetic models produced by traditional and additive manufacturing methods", The Journal of Advanced of Prosthodontics, 7(4), pp.294~302 (2015), 대한치과보철학회[DOI]
- Alharbi N, "Three-dimensional evaluation of marginal and internal fit of 3D-printed interim restorations fabricated on different finish line designs", J Prosthodont Res, 62, pp.218~216 (2018)
- Alharbi N, "Factors influencing the dimensional accuracy of 3D-printed full-coverage dental restorations using stereolithography technology", Int J Prosthodont, 29, pp.503~510 (2016)
- Osman RB, "Build angle: Does it influence the accuracy of 3D-printed dental restorations using digital light-processing technology?", Int J Prosthodont, 30, pp.182~188 (2017)
- Laurent M, "Clinical evaluation of the marginal fit of cast crowns-validation of the silicone replica method", J Oral Rehabil, 35, pp.116~122 (2008)
- Son K, "A comparison study of marginal and internal fit assessment methods for fixed dental prostheses", J Clin Med, 8, pp.785~ (2019)
- Wu JC, "Optimal cement space for resin luting cements", Int J Prosthodont, 7, pp.209~215 (1994)
- Holmes JR, "Considerations in measurement of marginal fit", J Prosthet Dent, 62, pp.405~408 (1989)
- Abdullah AO, "Comparative in vitro evaluation of CAD", CAM vs conventional provisional crowns, 2016, pp.24, 258~263
- Yao J, "Comparison of the flexural strength and marginal accuracy of traditional and CAD", CAM interim materials before and after thermal cycling, 2014, pp.112, 649~657
- Belser UC, "Fit of three porcelainfused-to-metal marginal designs in vivo : a scanning electron microscope study", J Prosthet Dent, 53, pp.24~29 (1985)
- Beuer F, "Marginal fit of 14-unit zirconia fixed dental prosthesis retainers", J Oral Rehabil, 36, pp.142~149 (2009)
- Nakamura T, "Marginal and internal fit of Cerec 3 CAD", CAM all-ceramic crowns, 2003, pp.16, 244~248
- Scherrer SS, "Effect of cement film thickness on the fracture resistance of a machinable glass-ceramic", Dent Mater, 10, pp.172~177 (1994)
- Boitelle P, "A systematic review of CAD", CAM fit restoration evaluations, 2014, pp.41, 853~874
- Kokubo Y, "Clinical marginal and internal gaps of In-Ceram crowns fabricated using the GN-I system", J Oral Rehabil, 32, pp.753~758 (2005)
- Park GS, "Effects of printing parameters on the fit of implant-supported 3D printing resin prosthetics", Materials(Basel), 12, pp.2533~ (2019)
- Tahayeri A, "3D printed versus conventionally cured provisional crown and bridge dental materials", Dent Mater, 34, pp.192~200 (2018)
- Unkovskiy A, "Objects build orientation, positioning, and curing influence dimensional accuracy and flexural properties of stereolithographically printed resin", Dent Mater, 34, pp.324~333 (2018)
- Frank D, "Expert system-based selection of the preferred direction of build for rapid prototyping processes", J Intell Manuf, 6, pp.339~345 (1995)
- Pham D, "Part orientation in stereolithography", Int J Adv Manuf Technol, 15, pp.674~682 (1999)
- Strano G, "A new approach to the design and optimisation of support structures in additive manufacturing", Int J Adv Manuf Technol, 66, pp.1247~1254 (2013)
- Jiang J, "Support structures for additive manufacturing : A review", J Manuf Mater Process, 2, pp.64~ (2018)
- Pandey PM, "Slicing procedures in layered manufacturing : a review", Rapid Prototyp J, 9, pp.274~288 (2003)
- Pandey PM, "Optimal part deposition orientation in FDM by using a multicriteria genetic algorithm", Int J Prod Res, 42, pp.4069~4089 (2004)
- Paul R, "Optimization of layered manufacturing process for reducing form errors with minimal support structures", J Manuf Syst, 36, pp.231~243 (2015)