Journal of International Society of Preventive and Community Dentistry

REVIEW ARTICLE
Year
: 2022  |  Volume : 12  |  Issue : 2  |  Page : 160--170

Flexural strength of CAD/CAM denture base materials: Systematic review and meta-analysis of in-vitro studies


Reem Abualsaud, Mohammed M Gad 
 Department of Substitutive Dental Sciences, College of Dentistry, Imam Abdulrahman Bin Faisal University, P. O. Box 1982, Dammam, Kingdom of Saudi Arabia

Correspondence Address:
Dr. Reem Abualsaud
Department of Substitutive Dental Sciences, College of Dentistry, Imam Abdulrahman Bin Faisal University, P. O. Box 1982, Dammam 31441.
Kingdom of Saudi Arabia

Introduction: Digital complete dentures fabrication techniques are expanding. This study aimed to review flexural strength (FS) of milled and 3D-printed denture base materials to answer the study question: is FS of computer-aided designing/computer-aided manufacturing (CAD/CAM) denture base comparable to conventional heat-polymerized materials?Materials and Methods: Search was done within different databases for articles published between January 2010 and June 2021 using specific keywords. Articles of in-vitro studies in English language with methods following International Standards Organization standardization/ADA specifications for flexural testing of conventional and CAD/CAM (milled or printed) polymethyl methacrylate (PMMA) materials were included. Results: Out of the 61 studies, 9 were processed for data extraction and only 7 underwent meta-analysis. Two, six, and one study showed high, moderate, and low risk of bias, respectively. Random-effects model was used for analysis and resulted in the average FS of 120.61 MPa [95% confidence interval (CI): 109.81−131.41] and 92.16 MPa (CI: 75.12−109.19) for CAD/CAM milled and heat-polymerized PMMA, respectively. Conclusion: Subtractive CAD/CAM technique of denture fabrication showed satisfactory FS values, whereas additive CAD/CAM method was comparable to conventional heat-polymerized technique with lower value, requiring further investigations and improvement. The clinical use of milled denture bases is an acceptable substitution to heat-polymerized PMMA, making the denture fabrication an easier and faster process.


How to cite this article:
Abualsaud R, Gad MM. Flexural strength of CAD/CAM denture base materials: Systematic review and meta-analysis of in-vitro studies.J Int Soc Prevent Communit Dent 2022;12:160-170


How to cite this URL:
Abualsaud R, Gad MM. Flexural strength of CAD/CAM denture base materials: Systematic review and meta-analysis of in-vitro studies. J Int Soc Prevent Communit Dent [serial online] 2022 [cited 2022 May 25 ];12:160-170
Available from: https://www.jispcd.org/article.asp?issn=2231-0762;year=2022;volume=12;issue=2;spage=160;epage=170;aulast=Abualsaud;type=0