OBJECTIVES: This study examined the metal-ceramic bond strength between different ceramics and a novel CAD/CAM base metal alloy as well as conventional CoCrMo alloys. METHODS: Three different base metal alloys were tested: a novel CAD/CAM milled and sintered alloy (MS), a. laser sintered alloy (LS), and a cast alloy (C). Specimens for the Schwickerath crack initiation test according to ISO 9693:2012 were prepared and veneered using the following veneering ceramics: i. Creation (Willy Geller), ii. VITA VM13 (VITA Zahnfabrik), and iii. Reflex (Wieland+Dental). The specimens were subsequently thermally aged (5,000 cycles, 5°C/55°C, dwell time: 20 s) and the bond strength was measured in a universal testing machine (Zwick 1445, 1 mm/min). Data were analyzed using two-way and one-way ANOVA, followed by a post hoc Scheffé test. RESULTS: For the veneering ceramics VITA VM13 and Reflex, no impact of the used alloy on bond strength results was found (p=0.124-0.393). In contrast, the veneering ceramic Creation showed significantly higher bond strength values in combination with MS and LS than with C (p=0.001). For MS (p<0.001) and LS (p=0.001) alloys veneered with Reflex, significantly lower bond strengths were observed than for specimens veneered with Creation or VITA VM13. Within C alloy (p=0.012), significantly lower bond strengths were measured for specimens veneered with Reflex than for VITA VM13. CONCLUSION: The novel CAD/CAM base metal alloy Ceramill Sintron showed comparable metal-ceramic bond strength compared to conventional CoCrMo alloys.
OBJECTIVES: This study examined the metal-ceramic bond strength between different ceramics and a novel CAD/CAM base metal alloy as well as conventional CoCrMo alloys. METHODS: Three different base metal alloys were tested: a novel CAD/CAM milled and sintered alloy (MS), a. laser sintered alloy (LS), and a cast alloy (C). Specimens for the Schwickerath crack initiation test according to ISO 9693:2012 were prepared and veneered using the following veneering ceramics: i. Creation (Willy Geller), ii. VITA VM13 (VITA Zahnfabrik), and iii. Reflex (Wieland+Dental). The specimens were subsequently thermally aged (5,000 cycles, 5°C/55°C, dwell time: 20 s) and the bond strength was measured in a universal testing machine (Zwick 1445, 1 mm/min). Data were analyzed using two-way and one-way ANOVA, followed by a post hoc Scheffé test. RESULTS: For the veneering ceramics VITA VM13 and Reflex, no impact of the used alloy on bond strength results was found (p=0.124-0.393). In contrast, the veneering ceramic Creation showed significantly higher bond strength values in combination with MS and LS than with C (p=0.001). For MS (p<0.001) and LS (p=0.001) alloys veneered with Reflex, significantly lower bond strengths were observed than for specimens veneered with Creation or VITA VM13. Within C alloy (p=0.012), significantly lower bond strengths were measured for specimens veneered with Reflex than for VITA VM13. CONCLUSION: The novel CAD/CAM base metal alloy Ceramill Sintron showed comparable metal-ceramic bond strength compared to conventional CoCrMo alloys.
Authors: Elif Ece Yoldan; Nurullah Türker; Ulviye Ş Büyükkaplan; Mehmet M Özarslan; Recep Karalı; Ahmet T Deniz Journal: Scanning Date: 2020-04-29 Impact factor: 1.932
Authors: Hae Ri Kim; Seong-Ho Jang; Young Kyung Kim; Jun Sik Son; Bong Ki Min; Kyo-Han Kim; Tae-Yub Kwon Journal: Materials (Basel) Date: 2016-07-20 Impact factor: 3.623