Citation Information :
Masri G, Mortada R, Ounsi H, Boulos P. Adaptation of Complete Denture Base Fabricated by Conventional, Milling, and 3-D Printing Techniques: An In Vitro Study. J Contemp Dent Pract 2020; 21 (4):367-371.
Aim: The aim of this study was to compare the adaptation of complete denture base (CDB) manufactured by three different techniques: conventional, milling, and three-dimensional (3-D) printing. Materials and methods: A master cast was duplicated to create 60 gypsum casts. Twenty casts (n = 20) were attributed to each group. In the computer-aided design and computer-aided manufacturing (CAD/CAM) groups (milling and 3-D printing), the 40 gypsum casts reserved for these two groups were scanned. An STL file was obtained and a master CDB was designed and then fabricated according to each technique. In the conventional group, a polyvinyl siloxane putty mold was obtained from the milled CDB, and this mold was used to fabricate 20 conventional denture bases by compression molding using the silicon–gypsum technique in a bronze flask. The inner surfaces of the obtained 60 CDB were scanned and superimposed over their corresponding master cast. Deviation analyses were calculated using digital subtraction technique. Five functional areas (posterior palatal seal, anterior border seal, crest of the ridge, maxillary tuberosities, and palate) were selected to evaluate the variations in CBD adaptation. Results: Based on the results and color maps of all selected regions, milling technique offers the best adaptation. The crest of ridge in the conventional technique showed the least adaptation and the posterior palatal seal in the 3-D printing technique showed the best adaptation. Conclusion: Within the limitations of this study, the CAD/CAM fabrication techniques seem to offer better adaptation of CDB compared to the conventional fabrication technique. Milled CDBs presented the most homogeneous distribution of adaptation, yet the 3-D printing process seems a promising techniques that needs to be addressed and perfected. Clinical significance: The CAD/CAM technologies can help overcome many limitations related to conventional impressions and therefore should be well investigated to improve the edentulous patient’s quality of life.
Sun Y, Lü P, Wang Y. Study on CAD&RP for removable complete denture. Comput Methods Programs Biomed 2009;93(3):266–272. DOI: 10.1016/j.cmpb.2008.10.003.
Carlsson GE, Omar R. The future of complete dentures in oral rehabilitation. A critical review. J Oral Rehabil 2010;37(2):143–156. DOI: 10.1111/j.1365-2842.2009.02039.x.
Christensen GJ. Removable prosthodontics: a forgotten part of dentistry. Alpha Omegan 2006;99(1):26–28. DOI: 10.1016/j.aodf.2006.02.028.
Rueggeberg F. From vulcanite to vinyl, a history of resins in restorative dentistry. J Prosthet Dent 2002;87(4):364–379. DOI: 10.1067/mpr.2002.123400.
Anusavice KJ, Shen C, Rawls HR. Phillips’ science of dental materials, 12th ed., St. Louis: Elsevier; 2013. p. 485.
Pryor WJ. Injection molding of plastics for dentures. J Am Dent Assoc 1942;29:1400–1408. DOI: 10.14219/jada.archive.1942.0201.
Parvizi A, Lindquist T, Schneider R, et al. Comparison of the dimensional accuracy of injection-molded denture base materials to that of conventional pressure-pack acrylic resin. J Prosthodont 2004;13(2):83–89. DOI: 10.1111/j.1532-849X.2004.04014.x.
Artopoulos A, Juszczyk AS, Rodriguez JM, et al. Three dimensional processing deformation of three denture base materials. J Prosthet Dent 2013;110(6):481–487. DOI: 10.1016/j.prosdent.2013.07.005.
Yeung KC, Chow TW, Clark RK. Temperature and dimensional changes in the two-stage processing technique for complete dentures. J Dent 1995;23(4):245–253. DOI: 10.1016/0300-5712(95)91190-X.
Felton D, Cooper L, Duqum I, et al. Evidence-based guidelines for the care and maintenance of complete dentures: a publication of the American College of prosthodontists. J Am Dent Assoc 2011;142(Suppl 1):1S–20S.
Infante L, Yilmaz B, McGlumphy E, et al. Fabricating complete dentures with CAD/CAM technology. J Prosthet Dentistry 2014;111(5):351–355. DOI: 10.1016/j.prosdent.2013.10.014.
Bidra AS, Taylor TD, Agar JR. Computer-aided technology for fabricating complete dentures: systematic review of historical background, current status, and future perspectives. J Prosthet Dentistry 2013;109(6):361–366. DOI: 10.1016/S0022-3913(13)60318-2.
Janeva NM, Kovacevska G, Elecevski S, et al. Advantages of CAD/CAM versus conventional complete dentures - a review. Open Access Maced J Med Sci 2018;6(8):1498–1502. DOI: 10.3889/oamjms.2018.308.
Hwang H-J, Lee SJ, Park EJ, et al. Assessment of the trueness and tissue surface adaptation of CAD-CAM maxillary denture bases manufactured using digital light processing. J Prosthet Dent 2019;121(1):110–117. DOI: 10.1016/j.prosdent.2018.02.018.
Yoon H-I, Hwang HJ, Ohkubo C, et al. Evaluation of the trueness and tissue surface adaptation of CAD-CAM mandibular denture bases manufactured using digital light processing. J Prosthet Dent 2018;120(6):919–926. DOI: 10.1016/j.prosdent.2018.01.027.
Jin M-C, Hyung-In Y, In-Sung Y, et al. The effect of build angle on the tissue surface adaptation of maxillary and mandibular complete denture bases manufactured by digital light processing. J Prosthet Dent 2019: S0022-3913(19)30023-X. article in press.
Li Y, Han W, Cao J, et al. Design of complete dentures by adopting CAD developed for fixed prostheses. J Prosthodont 2018;27(2):212–219. DOI: 10.1111/jopr.12554.
Becker CM, Smith DE, Nicholls JI. The comparison of denturebase processing techniques. Part II. Dimensional changes due to processing. J Prosthet Dent 1977;37(4):450459. DOI: 10.1016/0022-3913(77)90147-0.
Morgano SM, VanBlarcom CW, Ferro KJ, et al. The history of the glossary of prosthodontic terms. J Prosthet Dent 2018;3:311–312.
Steinmassl PA, Wiedemair V, Huck C, et al. Do CAD/CAM dentures really release less monomer than conventional dentures? Clin Oral Investig 2017;21(5):1697–1705. DOI: 10.1007/s00784-016-1961-6.
Jacobson TE, Krol AJ. A contemporary review of the factors involved in complete denture retention, stability, and support. Part I: Retention. J Prosthet Dent 1983;49(1):5–15. DOI: 10.1016/0022-3913(83) 90228-7.
Caldwell RC. Adhesion of foods to teeth. J Dent Res 1962;41:821–832. DOI: 10.1177/00220345620410041401.
Hickey JC, Zarb GA, Bolender CL. Boucher’s prosthodontic treatment for edentulous patients, 12th ed., St. Louis: Mosby; 2004. pp. 437–442; Ishizaki K, Sakurai K, Tazaki M, et al. Response of merkel cells in the palatal rugae to the continuous mechanical stimulation by palatal plate. Somatosens Mot Res 2006;23(1–2):63–72. DOI: 10.1080/08990220600741069.
Tsuruoka M, Ishizaki K, Sakurai K, et al. Morphological and molecular changes in denture-supporting tissues under persistent mechanical stress in rats. J Oral Rehabil 2008;35(12):889–897. DOI: 10.1111/j.1365-2842.2008.01883.x.
Kaiba Y, Hirano S, Hayakawa I. Palatal coverage disturbance in masticatory function. J Med Dent Sci 2006;53(1):1–6.
Maricich SM, Wellnitz SA, Nelson AM, et al. Merkel cells are essential for light-touch responses. Science 2009;324(5934):1580–1582. DOI: 10.1126/science.1172890.
Kimoto S, Ogura K, Feine JS, et al. Asymptomatic hypoesthesia of the maxillary alveolar ridge in complete denture wearers. J Oral Rehabil 2008;35(9):670–676. DOI: 10.1111/j.1365-2842.2007.01818.x.
Ishizaki K, Sakurai K, Tazaki Y, et al. An experimental study on the behavior of merkel Cells under a denture base. Prosthodont Res Pract 2003;2(1):59–63. DOI: 10.2186/prp.2.59.
Bidra AS, Farrell K, Burnham D, et al. Prospective cohort pilot study of 2-visit CAD/CAM monolithic complete dentures and implant-retained overdentures: clinical and patient-centered outcomes. J Prosthet Dent 2016;115(5):578–586. DOI: 10.1016/j.prosdent.2015.10.023.
Pereyra NM, Marano J, Subramanian G, et al. Comparison of patient satisfaction in the fabrication of conventional dentures vs. DENTCA (CAD/CAM) dentures: a case report. J N J Dent Assoc 2015;86(2):26–33.
Chen H, Wang H, Lv P, et al. Quantitative evaluation of tissue surface adaption of cad-designed and 3d printed wax pattern of maxillary complete denture. Biomed Res Int 2015;2015:453968. DOI: 10.1155/2015/453968.
Kalberer N, Mehl A, Schimmel M, et al. CAD-CAM milled versus rapidly prototyped (3D-printed) complete dentures: an in vitro evaluation of trueness. J Prosthet Dent 2019;121(4):637–643. DOI: 10.1016/j.prosdent.2018.09.001.
Goodacre BJ, Goodacre CJ, Baba NZ, et al. Comparison of denture base adaptation between CAD-CAM and conventional fabrication techniques. J Prosthet Dent 2016;116(2):249–256. DOI: 10.1016/j.prosdent.2016.02.017.
Steinmassl O, Herbert D, Ingrid G, et al. CAD/CAM produces dentures with improved fit. Clin Oral Investig 2018;22(8):2829–2835. DOI: 10.1007/s00784-018-2369-2.
Srinivasan M, Cantin Y, Mehl A, et al. CAD/CAM milled removable complete dentures: an in vitro evaluation of trueness. Clin Oral Investig 2016;21(6):2007–2019. DOI: 10.1007/s00784-016-1989-7.
Ucar Y, Akova T, Aysan I. Mechanical properties of polyamide versus different PMMA denture base materials. J Prosthodont 2012;21(3): 173–176. DOI: 10.1111/j.1532-849X.2011.00804.x.