Retentive Properties of Circumferential Clasps Manufactured by Lost-Wax Method and Additive and Subtractive Manufac-turing Techniques
Yükleniyor...
Tarih
2021
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Kapadokya Üniversitesi Yayınları
Erişim Hakkı
info:eu-repo/semantics/openAccess
Özet
Statement of the problem: The number of studies examining the reten-tion properties of circumferential clasps (CC) produced with different manu-facturing techniques and metal alloys is still insufficient.
Objective: The aim of this study was to examine the time-dependent changes of the retention abilities of CCs produced using different production techniques and different metal alloys.
Materials & Methods: 5 abutments were produced by selective laser sintering technique with Cr-Co alloy to use during retention tests. 20 wax CCs were formed on the abutments using standard wax pattern, and 10 Cr-Co (Cr-CoL) and 10 titanium (TiL) CCs were manufacturing using conventional lost wax (LW) method. A virtual CC was designed on digitized abutments using dental CAD software, and STL data of the CC was obtained. 10 CCs were fab-ricated from Cr-Co (Cr-CoA) by additive manufacturing method (AMM). Using the same virtual CC design and subtractive manufacturing method (SMM), 10 CCs from Cr-Co blocks (Cr-CoS) and 10 CCs from titanium blocks (TiS) were produced. The clasps were subjected to a total of 3000 insertion-removal simu-lation tests (IRST) using a specially prepared experimental setup.
Results: The initial retention forces of the CCs belonging to 5 different groups are listed as follows; TiS (13.1 N), Cr-CoL (10.8 N), TiL(9 N), Cr-CoS (8.5 N), Co-CrA (8.4 N). At the end of 3000 cycles, the retention values of the CCs belonging to 5 different groups are as follows; TiS (17.3 N), Co-CrS (14 N), Co-CrL (12.6 N), Co-CrA (11.8 N), TiL (10.6 N). Significant differences were found between the retentive force values of the CCs in the TiS and Cr-CoA (P=0.02) and TiS and TiL (P=0.01) groups.
Conclusion: CCs manufactured by SMM have a higher retentive force value than clasps manufactured by LW and AMM. The retentive force values of the CCs increase as the number of simulations increases.
Objective: The aim of this study was to examine the time-dependent changes of the retention abilities of CCs produced using different production techniques and different metal alloys.
Materials & Methods: 5 abutments were produced by selective laser sintering technique with Cr-Co alloy to use during retention tests. 20 wax CCs were formed on the abutments using standard wax pattern, and 10 Cr-Co (Cr-CoL) and 10 titanium (TiL) CCs were manufacturing using conventional lost wax (LW) method. A virtual CC was designed on digitized abutments using dental CAD software, and STL data of the CC was obtained. 10 CCs were fab-ricated from Cr-Co (Cr-CoA) by additive manufacturing method (AMM). Using the same virtual CC design and subtractive manufacturing method (SMM), 10 CCs from Cr-Co blocks (Cr-CoS) and 10 CCs from titanium blocks (TiS) were produced. The clasps were subjected to a total of 3000 insertion-removal simu-lation tests (IRST) using a specially prepared experimental setup.
Results: The initial retention forces of the CCs belonging to 5 different groups are listed as follows; TiS (13.1 N), Cr-CoL (10.8 N), TiL(9 N), Cr-CoS (8.5 N), Co-CrA (8.4 N). At the end of 3000 cycles, the retention values of the CCs belonging to 5 different groups are as follows; TiS (17.3 N), Co-CrS (14 N), Co-CrL (12.6 N), Co-CrA (11.8 N), TiL (10.6 N). Significant differences were found between the retentive force values of the CCs in the TiS and Cr-CoA (P=0.02) and TiS and TiL (P=0.01) groups.
Conclusion: CCs manufactured by SMM have a higher retentive force value than clasps manufactured by LW and AMM. The retentive force values of the CCs increase as the number of simulations increases.
Açıklama
Anahtar Kelimeler
Additive and Subtractive Manufacturing Method, CAD/CAM, Cir-cumferential Clasp, Lost Wax Technique, Removable Partial Denture, Retention
Kaynak
Acta Stomatologica Cappadocia
WoS Q Değeri
Scopus Q Değeri
Cilt
1
Sayı
1
Künye
Kar, M. Salih., Sipahi, Cumhur. & Ezmek, Bahadır. “Retentive Properties of Circumferential Clasps Manufactured by Lost-Wax Method and Additive and Subtractive Manufactu-ring Techniques”. Acta Stomatologica Cappadocia 2021;1(1):36-51 DOI: https://doi.org/10.54995/ASC.1.1.4
