Singh Rupa, Patel Trishala Ajit, Barui Asish Kumar, Verma Manu, Kerketta Jenifer, Majumder Prasanta
Department of Prosthodontics and Crown & Bridge, Mithila Minority Dental College and Hospital, Darbhanga, Bihar, India.
Prosthodontics and Crown & Bridgework and Oral Implantology, Faculty of dental science, Dharmsinh Desai University, Nadiad, Gujarat, India.
Bioinformation. 2024 Jun 30;20(6):665-668. doi: 10.6026/973206300200665. eCollection 2024.
The fracture strength of implant supported zirconia-titanium base (Zi-Ti) base restorations with and without modification of submucosal cervical contour is of interest to dentists. 80 zirconia specimens were adjusted onto the Ti-base. One category consisted of specimens that underwent modification. Other category consisted of abutments without modification. There was polishing and recon touring at the interface of Zi-Ti base in cervical regions. Using the universal testing apparatus fracture resistance was assessed for every sample in every category in Newtons (N). The fracture strength of abutments with modification ranged between 4465.79 - 6523.50 N with mean value of 5604.24 ± 497.62 N. On the other hand, values of fracture strength varied between 5511.42 - 7064.33 N. in abutments without modification with mean fracture strength values of 6265.95 ± 331.61. It was observed that the fracture strength was lesser in abutments that underwent modification.
种植体支持的氧化锆-钛基（Zi-Ti）基修复体在有无黏膜下颈部轮廓修改情况下的断裂强度是牙医们感兴趣的。80个氧化锆样本被调整到钛基上。一类样本进行了修改，另一类基台未作修改。在颈部区域的Zi-Ti基界面处进行了抛光和重新修整。使用万能测试仪器以牛顿（N）为单位评估每类中每个样本的抗断裂性。经过修改的基台的断裂强度在4465.79 - 6523.50 N之间，平均值为5604.24 ± 497.62 N。另一方面，未修改的基台的断裂强度值在5511.42 - 7064.33 N之间，平均断裂强度值为6265.95 ± 331.61。观察到经过修改的基台的断裂强度较低。
